So, I appear to be at the point where gluster appears to be functional, but engine still won't start.  Here's from agent.log on one machine after giving the hosted-engine --vm-start command:

MainThread::INFO::2018-05-29 23:52:09,953::hosted_engine::948::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_start_engine_vm) Engine VM started on localhost
MainThread::INFO::2018-05-29 23:52:10,230::brokerlink::68::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(notify) Success, was notification of state_transition (EngineStart-EngineStarting) sent? sent
MainThread::INFO::2018-05-29 23:56:16,061::hosted_engine::491::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(_monitoring_loop) Current state EngineStarting (score: 3400)
MainThread::INFO::2018-05-29 23:56:16,075::states::779::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(consume) VM is unexpectedly down.
MainThread::INFO::2018-05-29 23:56:16,076::state_decorators::92::ovirt_hosted_engine_ha.agent.hosted_engine.HostedEngine::(check) Timeout cleared while transitioning <class 'ovirt_hosted_engine_ha.agent.states.EngineStarting'> -> <class 'ovirt_hosted_engine_ha.agent.states.EngineMaybeAway'>
MainThread::INFO::2018-05-29 23:56:16,359::brokerlink::68::ovirt_hosted_engine_ha.lib.brokerlink.BrokerLink::(notify) Success, was notification of state_transition (EngineStarting-EngineMaybeAway) sent? sent
MainThread::INFO::2018-05-29 23:56:16,554::ovf_store::151::ovirt_hosted_engine_ha.lib.ovf.ovf_store.OVFStore::(getEngineVMOVF) OVF_STORE volume path: /var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/f22829ab-9fd5-415a-9a8f-809d3f7887d4/9f4760ee-119c-412a-a1e8-49e73e6ba929 
---------------
here's an excerpt from vdsm.log:
2018-05-30 00:00:23,114-0700 INFO  (jsonrpc/2) [jsonrpc.JsonRpcServer] RPC call VM.create succeeded in 0.02 seconds (__init__:573)
2018-05-30 00:00:23,115-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') VM wrapper has started (vm:2764)
2018-05-30 00:00:23,125-0700 INFO  (vm/50392390) [vdsm.api] START getVolumeSize(sdUUID='c0acdefb-7d16-48ec-9d76-659b8fe33e2a', spUUID='00000000-0000-0000-0000-000000000000', imgUUID='3de00d8c-d8b0-4ae0-9363-38a504f5d2b2', volUUID='d0fcd8de-6105-4f33-a674-727e3a11e89f', options=None) from=internal, task_id=c6d74ce9-1944-457a-9deb-d0a6929f39ce (api:46)
2018-05-30 00:00:23,130-0700 INFO  (vm/50392390) [vdsm.api] FINISH getVolumeSize return={'truesize': '11298571776', 'apparentsize': '10737418240'} from=internal, task_id=c6d74ce9-1944-457a-9deb-d0a6929f39ce (api:52)
2018-05-30 00:00:23,131-0700 INFO  (vm/50392390) [vds] prepared volume path:  (clientIF:497)
2018-05-30 00:00:23,131-0700 INFO  (vm/50392390) [vdsm.api] START prepareImage(sdUUID='c0acdefb-7d16-48ec-9d76-659b8fe33e2a', spUUID='00000000-0000-0000-0000-000000000000', imgUUID='3de00d8c-d8b0-4ae0-9363-38a504f5d2b2', leafUUID='d0fcd8de-6105-4f33-a674-727e3a11e89f', allowIllegal=False) from=internal, task_id=d2797364-270f-4800-92b0-d114441194a3 (api:46)
2018-05-30 00:00:23,155-0700 INFO  (vm/50392390) [storage.StorageDomain] Fixing permissions on /rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f (fileSD:622)
2018-05-30 00:00:23,156-0700 INFO  (vm/50392390) [storage.StorageDomain] Creating domain run directory u'/var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a' (fileSD:576)
2018-05-30 00:00:23,156-0700 INFO  (vm/50392390) [storage.fileUtils] Creating directory: /var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a mode: None (fileUtils:197)
2018-05-30 00:00:23,157-0700 INFO  (vm/50392390) [storage.StorageDomain] Creating symlink from /rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2 to /var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2 (fileSD:579)
2018-05-30 00:00:23,228-0700 INFO  (jsonrpc/0) [root] /usr/libexec/vdsm/hooks/after_get_caps/openstacknet_utils.py: rc=0 err= (hooks:110)
2018-05-30 00:00:23,418-0700 INFO  (vm/50392390) [vdsm.api] FINISH prepareImage return={'info': {'path': u'engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f', 'type': 'network', 'hosts': [{'port': '0', 'transport': 'tcp', 'name': '192.168.8.11'}, {'port': '0', 'transport': 'tcp', 'name': 'ovirt1.nwfiber.com'}, {'port': '0', 'transport': 'tcp', 'name': 'ovirt2.nwfiber.com'}, {'port': '0', 'transport': 'tcp', 'name': 'ovirt3.nwfiber.com'}], 'protocol': 'gluster'}, 'path': u'/var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f', 'imgVolumesInfo': [{'domainID': 'c0acdefb-7d16-48ec-9d76-659b8fe33e2a', 'leaseOffset': 0, 'path': u'/rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f', 'volumeID': u'd0fcd8de-6105-4f33-a674-727e3a11e89f', 'leasePath': u'/rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f.lease', 'imageID': '3de00d8c-d8b0-4ae0-9363-38a504f5d2b2'}]} from=internal, task_id=d2797364-270f-4800-92b0-d114441194a3 (api:52)
2018-05-30 00:00:23,419-0700 INFO  (vm/50392390) [vds] prepared volume path: /var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f (clientIF:497)
2018-05-30 00:00:23,420-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') Enabling drive monitoring (drivemonitor:54)
2018-05-30 00:00:23,434-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') drive 'hdc' path: 'file=' -> '*file=' (storagexml:323)
2018-05-30 00:00:23,435-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') drive 'vda' path: 'file=/rhev/data-center/00000000-0000-0000-0000-000000000000/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f' -> u'*file=/var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f' (storagexml:323)
2018-05-30 00:00:23,435-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') Using drive lease: {'domainID': 'c0acdefb-7d16-48ec-9d76-659b8fe33e2a', 'leaseOffset': 0, 'path': u'/rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f', 'volumeID': u'd0fcd8de-6105-4f33-a674-727e3a11e89f', 'leasePath': u'/rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f.lease', 'imageID': '3de00d8c-d8b0-4ae0-9363-38a504f5d2b2'} (lease:327)
2018-05-30 00:00:23,436-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') lease c0acdefb-7d16-48ec-9d76-659b8fe33e2a:d0fcd8de-6105-4f33-a674-727e3a11e89f path: 'LEASE-PATH:d0fcd8de-6105-4f33-a674-727e3a11e89f:c0acdefb-7d16-48ec-9d76-659b8fe33e2a' -> u'/rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f.lease' (lease:316)
2018-05-30 00:00:23,436-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') lease c0acdefb-7d16-48ec-9d76-659b8fe33e2a:d0fcd8de-6105-4f33-a674-727e3a11e89f offset: 'LEASE-OFFSET:d0fcd8de-6105-4f33-a674-727e3a11e89f:c0acdefb-7d16-48ec-9d76-659b8fe33e2a' -> 0 (lease:316)
2018-05-30 00:00:23,580-0700 INFO  (jsonrpc/0) [root] /usr/libexec/vdsm/hooks/after_get_caps/ovirt_provider_ovn_hook: rc=0 err=Failed to get Open VSwitch system-id . err = ['ovs-vsctl: unix:/var/run/openvswitch/db.sock: database connection failed (No such file or directory)']
 (hooks:110)
2018-05-30 00:00:23,582-0700 INFO  (jsonrpc/0) [api.host] FINISH getCapabilities return={'status': {'message': 'Done', 'code': 0}, 'info': {u'HBAInventory': {u'iSCSI': [{u'InitiatorName': u'iqn.1994-05.com.redhat:1283ce7a3171'}], u'FC': []}, u'packages2': {u'kernel': {u'release': u'862.3.2.el7.x86_64', u'version': u'3.10.0'}, u'glusterfs-rdma': {u'release': u'1.el7', u'version': u'3.12.9'}, u'glusterfs-fuse': {u'release': u'1.el7', u'version': u'3.12.9'}, u'spice-server': {u'release': u'2.el7_5.3', u'version': u'0.14.0'}, u'librbd1': {u'release': u'2.el7', u'version': u'0.94.5'}, u'vdsm': {u'release': u'1.el7.centos', u'version': u'4.20.27.1'}, u'qemu-kvm': {u'release': u'21.el7_5.3.1', u'version': u'2.10.0'}, u'openvswitch': {u'release': u'3.el7', u'version': u'2.9.0'}, u'libvirt': {u'release': u'14.el7_5.5', u'version': u'3.9.0'}, u'ovirt-hosted-engine-ha': {u'release': u'1.el7.centos', u'version': u'2.2.11'}, u'qemu-img': {u'release': u'21.el7_5.3.1', u'version': u'2.10.0'}, u'mom': {u'release': u'1.el7.centos', u'version': u'0.5.12'}, u'glusterfs': {u'release': u'1.el7', u'version': u'3.12.9'}, u'glusterfs-cli': {u'release': u'1.el7', u'version': u'3.12.9'}, u'glusterfs-server': {u'release': u'1.el7', u'version': u'3.12.9'}, u'glusterfs-geo-replication': {u'release': u'1.el7', u'version': u'3.12.9'}}, u'numaNodeDistance': {u'1': [20, 10], u'0': [10, 20]}, u'cpuModel': u'Intel(R) Xeon(R) CPU           E5540  @ 2.53GHz', u'nestedVirtualization': False, u'liveMerge': u'true', u'hooks': {u'before_vm_start': {u'50_hostedengine': {u'md5': u'95c810cdcfe4195302a59574a5148289'}, u'50_vhostmd': {u'md5': u'9206bc390bcbf208b06a8e899581be2d'}, u'50_vfio_mdev': {u'md5': u'b77eaad7b8f5ca3825dca1b38b0dd446'}}, u'after_network_setup': {u'30_ethtool_options': {u'md5': u'f04c2ca5dce40663e2ed69806eea917c'}}, u'after_vm_destroy': {u'50_vhostmd': {u'md5': u'd70f7ee0453f632e87c09a157ff8ff66'}, u'50_vfio_mdev': {u'md5': u'35364c6e08ecc58410e31af6c73b17f6'}}, u'after_vm_start': {u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'ea0a5a715da8c1badbcda28e8b8fa00e'}}, u'after_device_migrate_destination': {u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'f93c12af7454bbba4c1ef445c2bc9860'}}, u'before_network_setup': {u'50_fcoe': {u'md5': u'28c352339c8beef1e1b05c67d106d062'}}, u'after_get_caps': {u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'0e00c63ab44a952e722209ea31fd7a71'}, u'ovirt_provider_ovn_hook': {u'md5': u'257990644ee6c7824b522e2ab3077ae7'}}, u'after_nic_hotplug': {u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'f93c12af7454bbba4c1ef445c2bc9860'}}, u'before_vm_migrate_destination': {u'50_vhostmd': {u'md5': u'9206bc390bcbf208b06a8e899581be2d'}}, u'after_device_create': {u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'f93c12af7454bbba4c1ef445c2bc9860'}}, u'before_vm_dehibernate': {u'50_vhostmd': {u'md5': u'9206bc390bcbf208b06a8e899581be2d'}}, u'before_nic_hotplug': {u'50_vmfex': {u'md5': u'49caba1a5faadd8efacef966f79bc30a'}, u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'0438de5ff9b6bf8d3160804ff71bf827'}, u'ovirt_provider_ovn_hook': {u'md5': u'ada7e4e757fd0241b682b5cc6a545fc8'}}, u'before_device_migrate_destination': {u'50_vmfex': {u'md5': u'49caba1a5faadd8efacef966f79bc30a'}}, u'before_device_create': {u'50_vmfex': {u'md5': u'49caba1a5faadd8efacef966f79bc30a'}, u'openstacknet_utils.py': {u'md5': u'640ef8b473cbc16b102c5ebf57ea533f'}, u'50_openstacknet': {u'md5': u'0438de5ff9b6bf8d3160804ff71bf827'}, u'ovirt_provider_ovn_hook': {u'md5': u'ada7e4e757fd0241b682b5cc6a545fc8'}}}, u'supportsIPv6': True, u'realtimeKernel': False, u'vmTypes': [u'kvm'], u'liveSnapshot': u'true', u'cpuThreads': u'16', u'kdumpStatus': 0, u'networks': {u'ovirtmgmt': {u'iface': u'ovirtmgmt', u'ipv6autoconf': False, u'addr': u'192.168.8.12', u'dhcpv6': False, u'ipv6addrs': [], u'switch': u'legacy', u'bridged': True, u'mtu': u'1500', u'dhcpv4': True, u'netmask': u'255.255.255.0', u'ipv4defaultroute': True, u'stp': u'off', u'ipv4addrs': [u'192.168.8.12/24'], u'ipv6gateway': u'::', u'gateway': u'192.168.8.1', u'ports': [u'em1']}, u'Public_Fiber': {u'iface': u'Public_Fiber', u'ipv6autoconf': False, u'addr': u'', u'dhcpv6': False, u'ipv6addrs': [], u'switch': u'legacy', u'bridged': True, u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'', u'ipv4defaultroute': False, u'stp': u'off', u'ipv4addrs': [], u'ipv6gateway': u'::', u'gateway': u'', u'ports': [u'em1.3']}, u'Gluster': {u'iface': u'em4', u'ipv6autoconf': False, u'addr': u'172.172.1.12', u'dhcpv6': False, u'ipv6addrs': [], u'switch': u'legacy', u'bridged': False, u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'255.255.255.0', u'ipv4defaultroute': False, u'ipv4addrs': [u'172.172.1.12/24'], u'interface': u'em4', u'ipv6gateway': u'::', u'gateway': u''}}, u'kernelArgs': u'BOOT_IMAGE=/vmlinuz-3.10.0-862.3.2.el7.x86_64 root=/dev/mapper/centos_ovirt-root ro crashkernel=auto rd.lvm.lv=centos_ovirt/root rd.lvm.lv=centos_ovirt/swap rhgb quiet LANG=en_US.UTF-8', u'bridges': {u'Public_Fiber': {u'ipv6autoconf': False, u'addr': u'', u'dhcpv6': False, u'ipv6addrs': [], u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'', u'ipv4defaultroute': False, u'stp': u'off', u'ipv4addrs': [], u'ipv6gateway': u'::', u'gateway': u'', u'opts': {u'multicast_last_member_count': u'2', u'vlan_protocol': u'0x8100', u'hash_elasticity': u'4', u'multicast_query_response_interval': u'1000', u'group_fwd_mask': u'0x0', u'multicast_snooping': u'1', u'multicast_startup_query_interval': u'3125', u'hello_timer': u'0', u'multicast_querier_interval': u'25500', u'max_age': u'2000', u'hash_max': u'512', u'stp_state': u'0', u'topology_change_detected': u'0', u'priority': u'32768', u'multicast_igmp_version': u'2', u'multicast_membership_interval': u'26000', u'root_path_cost': u'0', u'root_port': u'0', u'multicast_stats_enabled': u'0', u'multicast_startup_query_count': u'2', u'nf_call_iptables': u'0', u'vlan_stats_enabled': u'0', u'hello_time': u'200', u'topology_change': u'0', u'bridge_id': u'8000.00219b900710', u'topology_change_timer': u'0', u'ageing_time': u'30000', u'nf_call_ip6tables': u'0', u'multicast_mld_version': u'1', u'gc_timer': u'25509', u'root_id': u'8000.00219b900710', u'nf_call_arptables': u'0', u'group_addr': u'1:80:c2:0:0:0', u'multicast_last_member_interval': u'100', u'default_pvid': u'1', u'multicast_query_interval': u'12500', u'multicast_query_use_ifaddr': u'0', u'tcn_timer': u'0', u'multicast_router': u'1', u'vlan_filtering': u'0', u'multicast_querier': u'0', u'forward_delay': u'0'}, u'ports': [u'em1.3']}, u'ovirtmgmt': {u'ipv6autoconf': False, u'addr': u'192.168.8.12', u'dhcpv6': False, u'ipv6addrs': [], u'mtu': u'1500', u'dhcpv4': True, u'netmask': u'255.255.255.0', u'ipv4defaultroute': True, u'stp': u'off', u'ipv4addrs': [u'192.168.8.12/24'], u'ipv6gateway': u'::', u'gateway': u'192.168.8.1', u'opts': {u'multicast_last_member_count': u'2', u'vlan_protocol': u'0x8100', u'hash_elasticity': u'4', u'multicast_query_response_interval': u'1000', u'group_fwd_mask': u'0x0', u'multicast_snooping': u'1', u'multicast_startup_query_interval': u'3125', u'hello_timer': u'0', u'multicast_querier_interval': u'25500', u'max_age': u'2000', u'hash_max': u'512', u'stp_state': u'0', u'topology_change_detected': u'0', u'priority': u'32768', u'multicast_igmp_version': u'2', u'multicast_membership_interval': u'26000', u'root_path_cost': u'0', u'root_port': u'0', u'multicast_stats_enabled': u'0', u'multicast_startup_query_count': u'2', u'nf_call_iptables': u'0', u'vlan_stats_enabled': u'0', u'hello_time': u'200', u'topology_change': u'0', u'bridge_id': u'8000.00219b900710', u'topology_change_timer': u'0', u'ageing_time': u'30000', u'nf_call_ip6tables': u'0', u'multicast_mld_version': u'1', u'gc_timer': u'13221', u'root_id': u'8000.00219b900710', u'nf_call_arptables': u'0', u'group_addr': u'1:80:c2:0:0:0', u'multicast_last_member_interval': u'100', u'default_pvid': u'1', u'multicast_query_interval': u'12500', u'multicast_query_use_ifaddr': u'0', u'tcn_timer': u'0', u'multicast_router': u'1', u'vlan_filtering': u'0', u'multicast_querier': u'0', u'forward_delay': u'0'}, u'ports': [u'em1']}}, u'uuid': u'4C4C4544-005A-4710-8034-B2C04F4C4B31', u'onlineCpus': u'0,2,4,6,8,10,12,14,1,3,5,7,9,11,13,15', u'nameservers': [u'192.168.8.1', u'8.8.8.8'], u'nics': {u'em4': {u'ipv6autoconf': False, u'addr': u'172.172.1.12', u'speed': 1000, u'dhcpv6': False, u'ipv6addrs': [], u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'255.255.255.0', u'ipv4defaultroute': False, u'ipv4addrs': [u'172.172.1.12/24'], u'hwaddr': u'00:21:9b:90:07:16', u'ipv6gateway': u'::', u'gateway': u''}, u'em1': {u'ipv6autoconf': False, u'addr': u'', u'speed': 1000, u'dhcpv6': False, u'ipv6addrs': [], u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'', u'ipv4defaultroute': False, u'ipv4addrs': [], u'hwaddr': u'00:21:9b:90:07:10', u'ipv6gateway': u'::', u'gateway': u''}, u'em3': {u'ipv6autoconf': True, u'addr': u'', u'speed': 0, u'dhcpv6': False, u'ipv6addrs': [], u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'', u'ipv4defaultroute': False, u'ipv4addrs': [], u'hwaddr': u'00:21:9b:90:07:14', u'ipv6gateway': u'::', u'gateway': u''}, u'em2': {u'ipv6autoconf': True, u'addr': u'', u'speed': 0, u'dhcpv6': False, u'ipv6addrs': [], u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'', u'ipv4defaultroute': False, u'ipv4addrs': [], u'hwaddr': u'00:21:9b:90:07:12', u'ipv6gateway': u'::', u'gateway': u''}}, u'software_revision': u'1', u'hostdevPassthrough': u'false', u'clusterLevels': [u'3.6', u'4.0', u'4.1', u'4.2'], u'cpuFlags': u'fpu,vme,de,pse,tsc,msr,pae,mce,cx8,apic,sep,mtrr,pge,mca,cmov,pat,pse36,clflush,dts,acpi,mmx,fxsr,sse,sse2,ss,ht,tm,pbe,syscall,nx,rdtscp,lm,constant_tsc,arch_perfmon,pebs,bts,rep_good,nopl,xtopology,nonstop_tsc,aperfmperf,pni,dtes64,monitor,ds_cpl,vmx,est,tm2,ssse3,cx16,xtpr,pdcm,dca,sse4_1,sse4_2,popcnt,lahf_lm,tpr_shadow,vnmi,flexpriority,ept,vpid,dtherm,ida,model_Nehalem,model_Conroe,model_coreduo,model_core2duo,model_Penryn,model_n270', u'kernelFeatures': {u'RETP': 1, u'IBRS': 0, u'PTI': 1}, u'ISCSIInitiatorName': u'iqn.1994-05.com.redhat:1283ce7a3171', u'netConfigDirty': u'False', u'selinux': {u'mode': u'1'}, u'autoNumaBalancing': 1, u'reservedMem': u'321', u'containers': False, u'bondings': {}, u'software_version': u'4.20', u'supportedENGINEs': [u'3.6', u'4.0', u'4.1', u'4.2'], u'cpuSpeed': u'2527.017', u'numaNodes': {u'1': {u'totalMemory': u'16371', u'cpus': [1, 3, 5, 7, 9, 11, 13, 15]}, u'0': {u'totalMemory': u'16384', u'cpus': [0, 2, 4, 6, 8, 10, 12, 14]}}, u'cpuSockets': u'2', u'vlans': {u'em1.3': {u'iface': u'em1', u'ipv6autoconf': False, u'addr': u'', u'dhcpv6': False, u'ipv6addrs': [], u'vlanid': 3, u'mtu': u'1500', u'dhcpv4': False, u'netmask': u'', u'ipv4defaultroute': False, u'ipv4addrs': [], u'ipv6gateway': u'::', u'gateway': u''}}, u'version_name': u'Snow Man', 'lastClientIface': 'lo', u'cpuCores': u'8', u'hostedEngineDeployed': True, u'hugepages': [2048], u'guestOverhead': u'65', u'additionalFeatures': [u'libgfapi_supported', u'GLUSTER_SNAPSHOT', u'GLUSTER_GEO_REPLICATION', u'GLUSTER_BRICK_MANAGEMENT'], u'kvmEnabled': u'true', u'memSize': u'31996', u'emulatedMachines': [u'pc-i440fx-rhel7.1.0', u'pc-q35-rhel7.3.0', u'rhel6.3.0', u'pc-i440fx-rhel7.5.0', u'pc-i440fx-rhel7.0.0', u'rhel6.1.0', u'pc-i440fx-rhel7.4.0', u'rhel6.6.0', u'pc-q35-rhel7.5.0', u'rhel6.2.0', u'pc', u'pc-i440fx-rhel7.3.0', u'q35', u'pc-i440fx-rhel7.2.0', u'rhel6.4.0', u'pc-q35-rhel7.4.0', u'rhel6.0.0', u'rhel6.5.0'], u'rngSources': [u'hwrng', u'random'], u'operatingSystem': {u'release': u'5.1804.el7.centos.2', u'pretty_name': u'CentOS Linux 7 (Core)', u'version': u'7', u'name': u'RHEL'}}} from=::1,35660 (api:52)
2018-05-30 00:00:23,593-0700 INFO  (jsonrpc/0) [jsonrpc.JsonRpcServer] RPC call Host.getCapabilities succeeded in 3.26 seconds (__init__:573)
2018-05-30 00:00:23,724-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_device_create/50_openstacknet: rc=0 err= (hooks:110)
2018-05-30 00:00:23,919-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_device_create/50_vmfex: rc=0 err= (hooks:110)
2018-05-30 00:00:24,213-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_device_create/openstacknet_utils.py: rc=0 err= (hooks:110)
2018-05-30 00:00:24,392-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_device_create/ovirt_provider_ovn_hook: rc=0 err= (hooks:110)
2018-05-30 00:00:24,401-0700 INFO  (jsonrpc/1) [api.host] START getAllVmStats() from=::1,33766 (api:46)
2018-05-30 00:00:24,403-0700 INFO  (jsonrpc/1) [api.host] FINISH getAllVmStats return={'status': {'message': 'Done', 'code': 0}, 'statsList': (suppressed)} from=::1,33766 (api:52)
2018-05-30 00:00:24,403-0700 INFO  (jsonrpc/1) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.01 seconds (__init__:573)
2018-05-30 00:00:24,623-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_vm_start/50_hostedengine: rc=0 err= (hooks:110)
2018-05-30 00:00:24,836-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_vm_start/50_vfio_mdev: rc=0 err= (hooks:110)
2018-05-30 00:00:25,022-0700 INFO  (vm/50392390) [root] /usr/libexec/vdsm/hooks/before_vm_start/50_vhostmd: rc=0 err= (hooks:110)
2018-05-30 00:00:25,023-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') <?xml version="1.0" encoding="utf-8"?><domain type="kvm" xmlns:ns0="http://ovirt.org/vm/tune/1.0" xmlns:ovirt-vm="http://ovirt.org/vm/1.0">
    <name>HostedEngine</name>
    <uuid>50392390-4f89-435c-bf3b-8254b58a4ef7</uuid>
    <memory>8388608</memory>
    <currentMemory>8388608</currentMemory>
    <maxMemory slots="16">33554432</maxMemory>
    <vcpu current="4">16</vcpu>
    <sysinfo type="smbios">
        <system>
            <entry name="manufacturer">oVirt</entry>
            <entry name="product">oVirt Node</entry>
            <entry name="version">7-5.1804.el7.centos.2</entry>
            <entry name="serial">4C4C4544-005A-4710-8034-B2C04F4C4B31</entry>
            <entry name="uuid">50392390-4f89-435c-bf3b-8254b58a4ef7</entry>
        </system>
    </sysinfo>
    <clock adjustment="0" offset="variable">
        <timer name="rtc" tickpolicy="catchup"/>
        <timer name="pit" tickpolicy="delay"/>
        <timer name="hpet" present="no"/>
    </clock>
    <features>
        <acpi/>
    </features>
    <cpu match="exact">
        <model>Nehalem</model>
        <topology cores="1" sockets="16" threads="1"/>
        <numa>
            <cell cpus="0,1,2,3" id="0" memory="8388608"/>
        </numa>
    </cpu>
    <cputune/>
    <devices>
        <input bus="usb" type="tablet"/>
        <channel type="unix">
            <target name="ovirt-guest-agent.0" type="virtio"/>
            <source mode="bind" path="/var/lib/libvirt/qemu/channels/50392390-4f89-435c-bf3b-8254b58a4ef7.ovirt-guest-agent.0"/>
        </channel>
        <channel type="unix">
            <target name="org.qemu.guest_agent.0" type="virtio"/>
            <source mode="bind" path="/var/lib/libvirt/qemu/channels/50392390-4f89-435c-bf3b-8254b58a4ef7.org.qemu.guest_agent.0"/>
        </channel>
        <controller index="0" ports="16" type="virtio-serial">
            <address bus="0x00" domain="0x0000" function="0x0" slot="0x03" type="pci"/>
        </controller>
        <rng model="virtio">
            <backend model="random">/dev/urandom</backend>
        </rng>
        <graphics autoport="yes" keymap="en-us" passwd="*****" passwdValidTo="1970-01-01T00:00:01" port="-1" type="vnc">
            <listen network="vdsm-ovirtmgmt" type="network"/>
        </graphics>
        <controller type="usb">
            <address bus="0x00" domain="0x0000" function="0x2" slot="0x01" type="pci"/>
        </controller>
        <controller type="ide">
            <address bus="0x00" domain="0x0000" function="0x1" slot="0x01" type="pci"/>
        </controller>
        <video>
            <model heads="1" type="cirrus" vram="16384"/>
            <address bus="0x00" domain="0x0000" function="0x0" slot="0x05" type="pci"/>
        </video>
        <memballoon model="none"/>
        <disk device="cdrom" snapshot="no" type="file">
            <driver error_policy="report" name="qemu" type="raw"/>
            <source file="" startupPolicy="optional"/>
            <target bus="ide" dev="hdc"/>
            <readonly/>
            <address bus="1" controller="0" target="0" type="drive" unit="0"/>
        </disk>
        <disk device="disk" snapshot="no" type="file">
            <target bus="virtio" dev="vda"/>
            <source file="/var/run/vdsm/storage/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f"/>
            <driver cache="none" error_policy="stop" io="threads" name="qemu" type="raw"/>
            <alias name="ua-3de00d8c-d8b0-4ae0-9363-38a504f5d2b2"/>
            <address bus="0x00" domain="0x0000" function="0x0" slot="0x04" type="pci"/>
            <serial>3de00d8c-d8b0-4ae0-9363-38a504f5d2b2</serial>
        </disk>
        <lease>
            <key>d0fcd8de-6105-4f33-a674-727e3a11e89f</key>
            <lockspace>c0acdefb-7d16-48ec-9d76-659b8fe33e2a</lockspace>
            <target offset="0" path="/rhev/data-center/mnt/glusterSD/192.168.8.11:_engine/c0acdefb-7d16-48ec-9d76-659b8fe33e2a/images/3de00d8c-d8b0-4ae0-9363-38a504f5d2b2/d0fcd8de-6105-4f33-a674-727e3a11e89f.lease"/>
        </lease>
        <interface type="bridge">
            <model type="virtio"/>
            <link state="up"/>
            <source bridge="ovirtmgmt"/>
            <alias name="ua-9f93c126-cbb3-4c5b-909e-41a53c2e31fb"/>
            <address bus="0x00" domain="0x0000" function="0x0" slot="0x02" type="pci"/>
            <mac address="00:16:3e:2d:bd:b1"/>
            <filterref filter="vdsm-no-mac-spoofing"/>
            <bandwidth/>
        </interface>
    <channel type="unix"><target name="org.ovirt.hosted-engine-setup.0" type="virtio"/><source mode="bind" path="/var/lib/libvirt/qemu/channels/50392390-4f89-435c-bf3b-8254b58a4ef7.org.ovirt.hosted-engine-setup.0"/></channel></devices>
    <pm>
        <suspend-to-disk enabled="no"/>
        <suspend-to-mem enabled="no"/>
    </pm>
    <os>
        <type arch="x86_64" machine="pc-i440fx-rhel7.3.0">hvm</type>
        <smbios mode="sysinfo"/>
    </os>
    <metadata>
        <ns0:qos/>
        <ovirt-vm:vm>
            <minGuaranteedMemoryMb type="int">8192</minGuaranteedMemoryMb>
            <clusterVersion>4.2</clusterVersion>
            <ovirt-vm:custom/>
            <ovirt-vm:device mac_address="00:16:3e:2d:bd:b1">
                <ovirt-vm:custom/>
            </ovirt-vm:device>
            <ovirt-vm:device devtype="disk" name="vda">
                <ovirt-vm:poolID>00000000-0000-0000-0000-000000000000</ovirt-vm:poolID>
                <ovirt-vm:volumeID>d0fcd8de-6105-4f33-a674-727e3a11e89f</ovirt-vm:volumeID>
                <ovirt-vm:shared>exclusive</ovirt-vm:shared>
                <ovirt-vm:imageID>3de00d8c-d8b0-4ae0-9363-38a504f5d2b2</ovirt-vm:imageID>
                <ovirt-vm:domainID>c0acdefb-7d16-48ec-9d76-659b8fe33e2a</ovirt-vm:domainID>
            </ovirt-vm:device>
            <launchPaused>false</launchPaused>
            <resumeBehavior>auto_resume</resumeBehavior>
        </ovirt-vm:vm>
    </metadata>
<on_poweroff>destroy</on_poweroff><on_reboot>destroy</on_reboot><on_crash>destroy</on_crash></domain> (vm:2867)
2018-05-30 00:00:25,252-0700 INFO  (monitor/c0acdef) [storage.SANLock] Acquiring host id for domain c0acdefb-7d16-48ec-9d76-659b8fe33e2a (id=2, async=True) (clusterlock:284)
2018-05-30 00:00:26,808-0700 ERROR (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') The vm start process failed (vm:943)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 872, in _startUnderlyingVm
    self._run()
  File "/usr/lib/python2.7/site-packages/vdsm/virt/vm.py", line 2872, in _run
    dom.createWithFlags(flags)
  File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 130, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 92, in wrapper
    return func(inst, *args, **kwargs)
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1099, in createWithFlags
    if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
libvirtError: Failed to acquire lock: No space left on device
2018-05-30 00:00:26,809-0700 INFO  (vm/50392390) [virt.vm] (vmId='50392390-4f89-435c-bf3b-8254b58a4ef7') Changed state to Down: Failed to acquire lock: No space left on device (code=1) (vm:1683)

-------------
The "failed to acquire lock: no space left on device" error has me conserned...Yet there is no device that is full on any servers (espciially the one I'm on):

Filesystem                     Size  Used Avail Use% Mounted on
/dev/mapper/centos_ovirt-root  8.0G  6.6G  1.5G  82% /
devtmpfs                        16G     0   16G   0% /dev
tmpfs                           16G  4.0K   16G   1% /dev/shm
tmpfs                           16G   18M   16G   1% /run
tmpfs                           16G     0   16G   0% /sys/fs/cgroup
/dev/mapper/gluster-data       177G   59G  119G  33% /gluster/brick2
/dev/mapper/gluster-engine      25G   18G  7.9G  69% /gluster/brick1
/dev/mapper/vg_thin-iso         25G  7.5G   18G  30% /gluster/brick4
/dev/mapper/vg_thin-data--hdd  1.2T  308G  892G  26% /gluster/brick3
/dev/sda1                      497M  313M  185M  63% /boot
192.168.8.11:/engine            25G   20G  5.5G  79% /rhev/data-center/mnt/glusterSD/192.168.8.11:_engine
tmpfs                          3.2G     0  3.2G   0% /run/user/0
192.168.8.11:/data             136G   60G   77G  44% /rhev/data-center/mnt/glusterSD/192.168.8.11:_data
192.168.8.11:/iso               25G  7.5G   18G  30% /rhev/data-center/mnt/glusterSD/192.168.8.11:_iso
172.172.1.11:/data-hdd         1.2T  308G  892G  26% /rhev/data-center/mnt/glusterSD/172.172.1.11:_data-hdd

--------
--Jim


On Tue, May 29, 2018 at 11:53 PM, Jim Kusznir <jim@palousetech.com> wrote:
I've just gotten back to where hsoted-engine --vm-status does (eventually) return some output other than the ha-agent or storage is down error.  It does currently take up to two minutes, and the last run returned stale data.

Gluster-wise, gluster volume heal <volume> info shows the three volumes with all bricks are all showing 0 entries (and return quickly).  The 4th volume missing one brick (but still has two replicas) does return entries, and is currently taking a very long time to come back with them.

Making progress toward getting it online again...Don't know why I get stale data in hosted-engine --vm-status or how to overcome that...

--Jim



On Tue, May 29, 2018 at 11:38 PM, Jim Kusznir <jim@palousetech.com> wrote:
I believe the gluster data store for the engine is up and working correctly.  The rest are not mounted, as the engine hasn't managed to start correctly yet.  I did perform the copy-a-junk-file into the data store, then check to ensure its there on another host, then delete that and see that it disappeared on the first host; it passed that test.  Here's the info and status.  (I have NOT performed the steps that Krutika and Ravishankar suggested yet, as I don't have my data volumes working again yet.

[root@ovirt2 images]# gluster volume info
 
Volume Name: data
Type: Replicate
Volume ID: e670c488-ac16-4dd1-8bd3-e43b2e42cc59
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x (2 + 1) = 3
Transport-type: tcp
Bricks:
Brick1: ovirt1.nwfiber.com:/gluster/brick2/data
Brick2: ovirt2.nwfiber.com:/gluster/brick2/data
Brick3: ovirt3.nwfiber.com:/gluster/brick2/data (arbiter)
Options Reconfigured:
diagnostics.count-fop-hits: on
diagnostics.latency-measurement: on
changelog.changelog: on
geo-replication.ignore-pid-check: on
geo-replication.indexing: on
server.allow-insecure: on
performance.readdir-ahead: on
performance.quick-read: off
performance.read-ahead: off
performance.io-cache: off
performance.stat-prefetch: off
cluster.eager-lock: enable
network.remote-dio: enable
cluster.quorum-type: auto
cluster.server-quorum-type: server
storage.owner-uid: 36
storage.owner-gid: 36
features.shard: on
features.shard-block-size: 512MB
performance.low-prio-threads: 32
cluster.data-self-heal-algorithm: full
cluster.locking-scheme: granular
cluster.shd-wait-qlength: 10000
cluster.shd-max-threads: 8
network.ping-timeout: 30
user.cifs: off
nfs.disable: on
performance.strict-o-direct: on
 
Volume Name: data-hdd
Type: Replicate
Volume ID: d342a3ab-16f3-49f0-bbcf-f788be8ac5f1
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: 172.172.1.11:/gluster/brick3/data-hdd
Brick2: 172.172.1.12:/gluster/brick3/data-hdd
Brick3: 172.172.1.13:/gluster/brick3/data-hdd
Options Reconfigured:
diagnostics.count-fop-hits: on
diagnostics.latency-measurement: on
network.ping-timeout: 30
server.allow-insecure: on
storage.owner-gid: 36
storage.owner-uid: 36
user.cifs: off
features.shard: on
cluster.shd-wait-qlength: 10000
cluster.shd-max-threads: 8
cluster.locking-scheme: granular
cluster.data-self-heal-algorithm: full
cluster.server-quorum-type: server
cluster.quorum-type: auto
cluster.eager-lock: enable
network.remote-dio: enable
performance.low-prio-threads: 32
performance.stat-prefetch: off
performance.io-cache: off
performance.read-ahead: off
performance.quick-read: off
changelog.changelog: on
geo-replication.ignore-pid-check: on
geo-replication.indexing: on
transport.address-family: inet
performance.readdir-ahead: on
 
Volume Name: engine
Type: Replicate
Volume ID: 87ad86b9-d88b-457e-ba21-5d3173c612de
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x (2 + 1) = 3
Transport-type: tcp
Bricks:
Brick1: ovirt1.nwfiber.com:/gluster/brick1/engine
Brick2: ovirt2.nwfiber.com:/gluster/brick1/engine
Brick3: ovirt3.nwfiber.com:/gluster/brick1/engine (arbiter)
Options Reconfigured:
changelog.changelog: on
geo-replication.ignore-pid-check: on
geo-replication.indexing: on
performance.readdir-ahead: on
performance.quick-read: off
performance.read-ahead: off
performance.io-cache: off
performance.stat-prefetch: off
cluster.eager-lock: enable
network.remote-dio: off
cluster.quorum-type: auto
cluster.server-quorum-type: server
storage.owner-uid: 36
storage.owner-gid: 36
features.shard: on
features.shard-block-size: 512MB
performance.low-prio-threads: 32
cluster.data-self-heal-algorithm: full
cluster.locking-scheme: granular
cluster.shd-wait-qlength: 10000
cluster.shd-max-threads: 6
network.ping-timeout: 30
user.cifs: off
nfs.disable: on
performance.strict-o-direct: on
 
Volume Name: iso
Type: Replicate
Volume ID: b1ba15f5-0f0f-4411-89d0-595179f02b92
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x (2 + 1) = 3
Transport-type: tcp
Bricks:
Brick1: ovirt1.nwfiber.com:/gluster/brick4/iso
Brick2: ovirt2.nwfiber.com:/gluster/brick4/iso
Brick3: ovirt3.nwfiber.com:/gluster/brick4/iso (arbiter)
Options Reconfigured:
performance.strict-o-direct: on
nfs.disable: on
user.cifs: off
network.ping-timeout: 30
cluster.shd-max-threads: 6
cluster.shd-wait-qlength: 10000
cluster.locking-scheme: granular
cluster.data-self-heal-algorithm: full
performance.low-prio-threads: 32
features.shard-block-size: 512MB
features.shard: on
storage.owner-gid: 36
storage.owner-uid: 36
cluster.server-quorum-type: server
cluster.quorum-type: auto
network.remote-dio: off
cluster.eager-lock: enable
performance.stat-prefetch: off
performance.io-cache: off
performance.read-ahead: off
performance.quick-read: off
performance.readdir-ahead: on


[root@ovirt2 images]# gluster volume status
Status of volume: data
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick ovirt1.nwfiber.com:/gluster/brick2/da
ta                                          49152     0          Y       3226 
Brick ovirt2.nwfiber.com:/gluster/brick2/da
ta                                          49152     0          Y       2967 
Brick ovirt3.nwfiber.com:/gluster/brick2/da
ta                                          49152     0          Y       2554 
Self-heal Daemon on localhost               N/A       N/A        Y       4818 
Self-heal Daemon on ovirt3.nwfiber.com      N/A       N/A        Y       17853
Self-heal Daemon on ovirt1.nwfiber.com      N/A       N/A        Y       4771 
 
Task Status of Volume data
------------------------------------------------------------------------------
There are no active volume tasks
 
Status of volume: data-hdd
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick 172.172.1.11:/gluster/brick3/data-hdd 49153     0          Y       3232 
Brick 172.172.1.12:/gluster/brick3/data-hdd 49153     0          Y       2976 
Brick 172.172.1.13:/gluster/brick3/data-hdd N/A       N/A        N       N/A  
NFS Server on localhost                     N/A       N/A        N       N/A  
Self-heal Daemon on localhost               N/A       N/A        Y       4818 
NFS Server on ovirt3.nwfiber.com            N/A       N/A        N       N/A  
Self-heal Daemon on ovirt3.nwfiber.com      N/A       N/A        Y       17853
NFS Server on ovirt1.nwfiber.com            N/A       N/A        N       N/A  
Self-heal Daemon on ovirt1.nwfiber.com      N/A       N/A        Y       4771 
 
Task Status of Volume data-hdd
------------------------------------------------------------------------------
There are no active volume tasks
 
Status of volume: engine
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick ovirt1.nwfiber.com:/gluster/brick1/en
gine                                        49154     0          Y       3239 
Brick ovirt2.nwfiber.com:/gluster/brick1/en
gine                                        49154     0          Y       2982 
Brick ovirt3.nwfiber.com:/gluster/brick1/en
gine                                        49154     0          Y       2578 
Self-heal Daemon on localhost               N/A       N/A        Y       4818 
Self-heal Daemon on ovirt3.nwfiber.com      N/A       N/A        Y       17853
Self-heal Daemon on ovirt1.nwfiber.com      N/A       N/A        Y       4771 
 
Task Status of Volume engine
------------------------------------------------------------------------------
There are no active volume tasks
 
Status of volume: iso
Gluster process                             TCP Port  RDMA Port  Online  Pid
------------------------------------------------------------------------------
Brick ovirt1.nwfiber.com:/gluster/brick4/is
o                                           49155     0          Y       3247 
Brick ovirt2.nwfiber.com:/gluster/brick4/is
o                                           49155     0          Y       2990 
Brick ovirt3.nwfiber.com:/gluster/brick4/is
o                                           49155     0          Y       2580 
Self-heal Daemon on localhost               N/A       N/A        Y       4818 
Self-heal Daemon on ovirt3.nwfiber.com      N/A       N/A        Y       17853
Self-heal Daemon on ovirt1.nwfiber.com      N/A       N/A        Y       4771 
 
Task Status of Volume iso
------------------------------------------------------------------------------
There are no active volume tasks


On Tue, May 29, 2018 at 11:30 PM, Sahina Bose <sabose@redhat.com> wrote:


On Wed, May 30, 2018 at 10:42 AM, Jim Kusznir <jim@palousetech.com> wrote:
hosted-engine --deploy failed (would not come up on my existing gluster storage).  However, I realized no changes were written to my existing storage.  So, I went back to trying to get my old engine running.  

hosted-engine --vm-status is now taking a very long time (5+minutes) to return, and it returns stail information everywhere.  I thought perhaps the lockspace is corrupt, so tried to clean that and metadata, but both are failing (--cleam-metadata has hung and I can't even ctrl-c out of it).

How can I reinitialize all the lockspace/metadata safely?  There is no engine or VMs running currently....

I think the first thing to make sure is that your storage is up and running. So can you mount the gluster volumes and able to access the contents there?
Please provide the gluster volume info and gluster volume status of the volumes that you're using.



--Jim

On Tue, May 29, 2018 at 9:33 PM, Jim Kusznir <jim@palousetech.com> wrote:
Well, things went from bad to very, very bad....

It appears that during one of the 2 minute lockups, the fencing agents decided that another node in the cluster was down.  As a result, 2 of the 3 nodes were simultaneously reset with fencing agent reboot.  After the nodes came back up, the engine would not start.  All running VMs (including VMs on the 3rd node that was not rebooted) crashed.

I've now been working for about 3 hours trying to get the engine to come up.  I don't know why it won't start.  hosted-engine --vm-start says its starting, but it doesn't start (virsh doesn't show any VMs running).  I'm currently running --deploy, as I had run out of options for anything else I can come up with.  I hope this will allow me to re-import all my existing VMs and allow me to start them back up after everything comes back up.

I do have an unverified geo-rep backup; I don't know if it is a good backup (there were several prior messages to this list, but I didn't get replies to my questions.  It was running in what I believe to be "strange", and the data directories are larger than their source).

I'll see if my --deploy works, and if not, I'll be back with another message/help request.

When the dust settles and I'm at least minimally functional again, I really want to understand why all these technologies designed to offer redundancy conspired to reduce uptime and create failures where there weren't any otherwise.  I thought with hosted engine, 3 ovirt servers and glusterfs with minimum replica 2+arb or replica 3 should have offered strong resilience against server failure or disk failure, and should have prevented / recovered from data corruption.  Instead, all of the above happened (once I get my cluster back up, I still have to try and recover my webserver VM, which won't boot due to XFS corrupt journal issues created during the gluster crashes).  I think a lot of these issues were rooted from the upgrade from 4.1 to 4.2.

--Jim

On Tue, May 29, 2018 at 6:25 PM, Jim Kusznir <jim@palousetech.com> wrote:
I also finally found the following in my system log on one server:

[10679.524491] INFO: task glusterclogro:14933 blocked for more than 120 seconds.
[10679.525826] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[10679.527144] glusterclogro   D ffff97209832bf40     0 14933      1 0x00000080
[10679.527150] Call Trace:
[10679.527161]  [<ffffffffb9913f79>] schedule+0x29/0x70
[10679.527218]  [<ffffffffc060e388>] _xfs_log_force_lsn+0x2e8/0x340 [xfs]
[10679.527225]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[10679.527254]  [<ffffffffc05eeb97>] xfs_file_fsync+0x107/0x1e0 [xfs]
[10679.527260]  [<ffffffffb944f0e7>] do_fsync+0x67/0xb0
[10679.527268]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[10679.527271]  [<ffffffffb944f3d0>] SyS_fsync+0x10/0x20
[10679.527275]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[10679.527279]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[10679.527283] INFO: task glusterposixfsy:14941 blocked for more than 120 seconds.
[10679.528608] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[10679.529956] glusterposixfsy D ffff972495f84f10     0 14941      1 0x00000080
[10679.529961] Call Trace:
[10679.529966]  [<ffffffffb9913f79>] schedule+0x29/0x70
[10679.530003]  [<ffffffffc060e388>] _xfs_log_force_lsn+0x2e8/0x340 [xfs]
[10679.530008]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[10679.530038]  [<ffffffffc05eeb97>] xfs_file_fsync+0x107/0x1e0 [xfs]
[10679.530042]  [<ffffffffb944f0e7>] do_fsync+0x67/0xb0
[10679.530046]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[10679.530050]  [<ffffffffb944f3f3>] SyS_fdatasync+0x13/0x20
[10679.530054]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[10679.530058]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[10679.530062] INFO: task glusteriotwr13:15486 blocked for more than 120 seconds.
[10679.531805] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[10679.533732] glusteriotwr13  D ffff9720a83f0000     0 15486      1 0x00000080
[10679.533738] Call Trace:
[10679.533747]  [<ffffffffb9913f79>] schedule+0x29/0x70
[10679.533799]  [<ffffffffc060e388>] _xfs_log_force_lsn+0x2e8/0x340 [xfs]
[10679.533806]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[10679.533846]  [<ffffffffc05eeb97>] xfs_file_fsync+0x107/0x1e0 [xfs]
[10679.533852]  [<ffffffffb944f0e7>] do_fsync+0x67/0xb0
[10679.533858]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[10679.533863]  [<ffffffffb944f3f3>] SyS_fdatasync+0x13/0x20
[10679.533868]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[10679.533873]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[10919.512757] INFO: task glusterclogro:14933 blocked for more than 120 seconds.
[10919.514714] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[10919.516663] glusterclogro   D ffff97209832bf40     0 14933      1 0x00000080
[10919.516677] Call Trace:
[10919.516690]  [<ffffffffb9913f79>] schedule+0x29/0x70
[10919.516696]  [<ffffffffb99118e9>] schedule_timeout+0x239/0x2c0
[10919.516703]  [<ffffffffb951cc04>] ? blk_finish_plug+0x14/0x40
[10919.516768]  [<ffffffffc05e9224>] ? _xfs_buf_ioapply+0x334/0x460 [xfs]
[10919.516774]  [<ffffffffb991432d>] wait_for_completion+0xfd/0x140
[10919.516782]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[10919.516821]  [<ffffffffc05eb0a3>] ? _xfs_buf_read+0x23/0x40 [xfs]
[10919.516859]  [<ffffffffc05eafa9>] xfs_buf_submit_wait+0xf9/0x1d0 [xfs]
[10919.516902]  [<ffffffffc061b279>] ? xfs_trans_read_buf_map+0x199/0x400 [xfs]
[10919.516940]  [<ffffffffc05eb0a3>] _xfs_buf_read+0x23/0x40 [xfs]
[10919.516977]  [<ffffffffc05eb1b9>] xfs_buf_read_map+0xf9/0x160 [xfs]
[10919.517022]  [<ffffffffc061b279>] xfs_trans_read_buf_map+0x199/0x400 [xfs]
[10919.517057]  [<ffffffffc05c8d04>] xfs_da_read_buf+0xd4/0x100 [xfs]
[10919.517091]  [<ffffffffc05c8d53>] xfs_da3_node_read+0x23/0xd0 [xfs]
[10919.517126]  [<ffffffffc05c9fee>] xfs_da3_node_lookup_int+0x6e/0x2f0 [xfs]
[10919.517160]  [<ffffffffc05d5a1d>] xfs_dir2_node_lookup+0x4d/0x170 [xfs]
[10919.517194]  [<ffffffffc05ccf5d>] xfs_dir_lookup+0x1bd/0x1e0 [xfs]
[10919.517233]  [<ffffffffc05fd8d9>] xfs_lookup+0x69/0x140 [xfs]
[10919.517271]  [<ffffffffc05fa018>] xfs_vn_lookup+0x78/0xc0 [xfs]
[10919.517278]  [<ffffffffb9425cf3>] lookup_real+0x23/0x60
[10919.517283]  [<ffffffffb9426702>] __lookup_hash+0x42/0x60
[10919.517288]  [<ffffffffb942d519>] SYSC_renameat2+0x3a9/0x5a0
[10919.517296]  [<ffffffffb94d3753>] ? selinux_file_free_security+0x23/0x30
[10919.517304]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[10919.517309]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[10919.517313]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[10919.517318]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[10919.517323]  [<ffffffffb942e58e>] SyS_renameat2+0xe/0x10
[10919.517328]  [<ffffffffb942e5ce>] SyS_rename+0x1e/0x20
[10919.517333]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[10919.517339]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[11159.496095] INFO: task glusteriotwr9:15482 blocked for more than 120 seconds.
[11159.497546] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11159.498978] glusteriotwr9   D ffff971fa0fa1fa0     0 15482      1 0x00000080
[11159.498984] Call Trace:
[11159.498995]  [<ffffffffb9911f00>] ? bit_wait+0x50/0x50
[11159.498999]  [<ffffffffb9913f79>] schedule+0x29/0x70
[11159.499003]  [<ffffffffb99118e9>] schedule_timeout+0x239/0x2c0
[11159.499056]  [<ffffffffc05dd9b7>] ? xfs_iext_bno_to_ext+0xa7/0x1a0 [xfs]
[11159.499082]  [<ffffffffc05dd43e>] ? xfs_iext_bno_to_irec+0x8e/0xd0 [xfs]
[11159.499090]  [<ffffffffb92f7a12>] ? ktime_get_ts64+0x52/0xf0
[11159.499093]  [<ffffffffb9911f00>] ? bit_wait+0x50/0x50
[11159.499097]  [<ffffffffb991348d>] io_schedule_timeout+0xad/0x130
[11159.499101]  [<ffffffffb9913528>] io_schedule+0x18/0x20
[11159.499104]  [<ffffffffb9911f11>] bit_wait_io+0x11/0x50
[11159.499107]  [<ffffffffb9911ac1>] __wait_on_bit_lock+0x61/0xc0
[11159.499113]  [<ffffffffb9393634>] __lock_page+0x74/0x90
[11159.499118]  [<ffffffffb92bc210>] ? wake_bit_function+0x40/0x40
[11159.499121]  [<ffffffffb9394154>] __find_lock_page+0x54/0x70
[11159.499125]  [<ffffffffb9394e85>] grab_cache_page_write_begin+0x55/0xc0
[11159.499130]  [<ffffffffb9484b76>] iomap_write_begin+0x66/0x100
[11159.499135]  [<ffffffffb9484edf>] iomap_write_actor+0xcf/0x1d0
[11159.499140]  [<ffffffffb9484e10>] ? iomap_write_end+0x80/0x80
[11159.499144]  [<ffffffffb94854e7>] iomap_apply+0xb7/0x150
[11159.499149]  [<ffffffffb9485621>] iomap_file_buffered_write+0xa1/0xe0
[11159.499153]  [<ffffffffb9484e10>] ? iomap_write_end+0x80/0x80
[11159.499182]  [<ffffffffc05f025d>] xfs_file_buffered_aio_write+0x12d/0x2c0 [xfs]
[11159.499213]  [<ffffffffc05f057d>] xfs_file_aio_write+0x18d/0x1b0 [xfs]
[11159.499217]  [<ffffffffb941a533>] do_sync_write+0x93/0xe0
[11159.499222]  [<ffffffffb941b010>] vfs_write+0xc0/0x1f0
[11159.499225]  [<ffffffffb941c002>] SyS_pwrite64+0x92/0xc0
[11159.499230]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[11159.499234]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[11159.499238]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[11279.488720] INFO: task xfsaild/dm-10:1134 blocked for more than 120 seconds.
[11279.490197] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11279.491665] xfsaild/dm-10   D ffff9720a8660fd0     0  1134      2 0x00000000
[11279.491671] Call Trace:
[11279.491682]  [<ffffffffb92a3a2e>] ? try_to_del_timer_sync+0x5e/0x90
[11279.491688]  [<ffffffffb9913f79>] schedule+0x29/0x70
[11279.491744]  [<ffffffffc060de36>] _xfs_log_force+0x1c6/0x2c0 [xfs]
[11279.491750]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[11279.491783]  [<ffffffffc0619fec>] ? xfsaild+0x16c/0x6f0 [xfs]
[11279.491817]  [<ffffffffc060df5c>] xfs_log_force+0x2c/0x70 [xfs]
[11279.491849]  [<ffffffffc0619e80>] ? xfs_trans_ail_cursor_first+0x90/0x90 [xfs]
[11279.491880]  [<ffffffffc0619fec>] xfsaild+0x16c/0x6f0 [xfs]
[11279.491913]  [<ffffffffc0619e80>] ? xfs_trans_ail_cursor_first+0x90/0x90 [xfs]
[11279.491919]  [<ffffffffb92bb161>] kthread+0xd1/0xe0
[11279.491926]  [<ffffffffb92bb090>] ? insert_kthread_work+0x40/0x40
[11279.491932]  [<ffffffffb9920677>] ret_from_fork_nospec_begin+0x21/0x21
[11279.491936]  [<ffffffffb92bb090>] ? insert_kthread_work+0x40/0x40
[11279.491976] INFO: task glusterclogfsyn:14934 blocked for more than 120 seconds.
[11279.493466] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11279.494952] glusterclogfsyn D ffff97209832af70     0 14934      1 0x00000080
[11279.494957] Call Trace:
[11279.494979]  [<ffffffffc0309839>] ? __split_and_process_bio+0x2e9/0x520 [dm_mod]
[11279.494983]  [<ffffffffb9913f79>] schedule+0x29/0x70
[11279.494987]  [<ffffffffb99118e9>] schedule_timeout+0x239/0x2c0
[11279.494997]  [<ffffffffc0309d98>] ? dm_make_request+0x128/0x1a0 [dm_mod]
[11279.495001]  [<ffffffffb991348d>] io_schedule_timeout+0xad/0x130
[11279.495005]  [<ffffffffb99145ad>] wait_for_completion_io+0xfd/0x140
[11279.495010]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[11279.495016]  [<ffffffffb951e574>] blkdev_issue_flush+0xb4/0x110
[11279.495049]  [<ffffffffc06064b9>] xfs_blkdev_issue_flush+0x19/0x20 [xfs]
[11279.495079]  [<ffffffffc05eec40>] xfs_file_fsync+0x1b0/0x1e0 [xfs]
[11279.495086]  [<ffffffffb944f0e7>] do_fsync+0x67/0xb0
[11279.495090]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[11279.495094]  [<ffffffffb944f3d0>] SyS_fsync+0x10/0x20
[11279.495098]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[11279.495102]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[11279.495105] INFO: task glusterposixfsy:14941 blocked for more than 120 seconds.
[11279.496606] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11279.498114] glusterposixfsy D ffff972495f84f10     0 14941      1 0x00000080
[11279.498118] Call Trace:
[11279.498134]  [<ffffffffc0309839>] ? __split_and_process_bio+0x2e9/0x520 [dm_mod]
[11279.498138]  [<ffffffffb9913f79>] schedule+0x29/0x70
[11279.498142]  [<ffffffffb99118e9>] schedule_timeout+0x239/0x2c0
[11279.498152]  [<ffffffffc0309d98>] ? dm_make_request+0x128/0x1a0 [dm_mod]
[11279.498156]  [<ffffffffb991348d>] io_schedule_timeout+0xad/0x130
[11279.498160]  [<ffffffffb99145ad>] wait_for_completion_io+0xfd/0x140
[11279.498165]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[11279.498169]  [<ffffffffb951e574>] blkdev_issue_flush+0xb4/0x110
[11279.498202]  [<ffffffffc06064b9>] xfs_blkdev_issue_flush+0x19/0x20 [xfs]
[11279.498231]  [<ffffffffc05eec40>] xfs_file_fsync+0x1b0/0x1e0 [xfs]
[11279.498238]  [<ffffffffb944f0e7>] do_fsync+0x67/0xb0
[11279.498242]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[11279.498246]  [<ffffffffb944f3f3>] SyS_fdatasync+0x13/0x20
[11279.498250]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[11279.498254]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[11279.498257] INFO: task glusteriotwr1:14950 blocked for more than 120 seconds.
[11279.499789] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11279.501343] glusteriotwr1   D ffff97208b6daf70     0 14950      1 0x00000080
[11279.501348] Call Trace:
[11279.501353]  [<ffffffffb9913f79>] schedule+0x29/0x70
[11279.501390]  [<ffffffffc060e388>] _xfs_log_force_lsn+0x2e8/0x340 [xfs]
[11279.501396]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[11279.501428]  [<ffffffffc05eeb97>] xfs_file_fsync+0x107/0x1e0 [xfs]
[11279.501432]  [<ffffffffb944ef3f>] generic_write_sync+0x4f/0x70
[11279.501461]  [<ffffffffc05f0545>] xfs_file_aio_write+0x155/0x1b0 [xfs]
[11279.501466]  [<ffffffffb941a533>] do_sync_write+0x93/0xe0
[11279.501471]  [<ffffffffb941b010>] vfs_write+0xc0/0x1f0
[11279.501475]  [<ffffffffb941c002>] SyS_pwrite64+0x92/0xc0
[11279.501479]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[11279.501483]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[11279.501489]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[11279.501493] INFO: task glusteriotwr4:14953 blocked for more than 120 seconds.
[11279.503047] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11279.504630] glusteriotwr4   D ffff972499f2bf40     0 14953      1 0x00000080
[11279.504635] Call Trace:
[11279.504640]  [<ffffffffb9913f79>] schedule+0x29/0x70
[11279.504676]  [<ffffffffc060e388>] _xfs_log_force_lsn+0x2e8/0x340 [xfs]
[11279.504681]  [<ffffffffb92cf1b0>] ? wake_up_state+0x20/0x20
[11279.504710]  [<ffffffffc05eeb97>] xfs_file_fsync+0x107/0x1e0 [xfs]
[11279.504714]  [<ffffffffb944f0e7>] do_fsync+0x67/0xb0
[11279.504718]  [<ffffffffb992076f>] ? system_call_after_swapgs+0xbc/0x160
[11279.504722]  [<ffffffffb944f3d0>] SyS_fsync+0x10/0x20
[11279.504725]  [<ffffffffb992082f>] system_call_fastpath+0x1c/0x21
[11279.504730]  [<ffffffffb992077b>] ? system_call_after_swapgs+0xc8/0x160
[12127.466494] perf: interrupt took too long (8263 > 8150), lowering kernel.perf_event_max_sample_rate to 24000

--------------------
I think this is the cause of the massive ovirt performance issues irrespective of gluster volume.  At the time this happened, I was also ssh'ed into the host, and was doing some rpm querry commands.  I had just run rpm -qa |grep glusterfs (to verify what version was actually installed), and that command took almost 2 minutes to return!  Normally it takes less than 2 seconds.  That is all pure local SSD IO, too....

I'm no expert, but its my understanding that anytime a software causes these kinds of issues, its a serious bug in the software, even if its mis-handled exceptions.  Is this correct?

--Jim

On Tue, May 29, 2018 at 3:01 PM, Jim Kusznir <jim@palousetech.com> wrote:
I think this is the profile information for one of the volumes that lives on the SSDs and is fully operational with no down/problem disks:

[root@ovirt2 yum.repos.d]# gluster volume profile data info
Brick: ovirt2.nwfiber.com:/gluster/brick2/data
----------------------------------------------
Cumulative Stats:
   Block Size:                256b+                 512b+                1024b+ 
 No. of Reads:                  983                  2696                  1059 
No. of Writes:                    0                  1113                   302 
 
   Block Size:               2048b+                4096b+                8192b+ 
 No. of Reads:                  852                 88608                 53526 
No. of Writes:                  522                812340                 76257 
 
   Block Size:              16384b+               32768b+               65536b+ 
 No. of Reads:                54351                241901                 15024 
No. of Writes:                21636                  8656                  8976 
 
   Block Size:             131072b+ 
 No. of Reads:               524156 
No. of Writes:               296071 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us           4189     RELEASE
      0.00       0.00 us       0.00 us       0.00 us           1257  RELEASEDIR
      0.00      46.19 us      12.00 us     187.00 us             69       FLUSH
      0.00     147.00 us      78.00 us     367.00 us             86 REMOVEXATTR
      0.00     223.46 us      24.00 us    1166.00 us            149     READDIR
      0.00     565.34 us      76.00 us    3639.00 us             88   FTRUNCATE
      0.00     263.28 us      20.00 us   28385.00 us            228          LK
      0.00      98.84 us       2.00 us     880.00 us           1198     OPENDIR
      0.00      91.59 us      26.00 us   10371.00 us           3853      STATFS
      0.00     494.14 us      17.00 us  193439.00 us           1171    GETXATTR
      0.00     299.42 us      35.00 us    9799.00 us           2044    READDIRP
      0.00    1965.31 us     110.00 us  382258.00 us            321     XATTROP
      0.01     113.40 us      24.00 us   61061.00 us           8134        STAT
      0.01     755.38 us      57.00 us  607603.00 us           3196     DISCARD
      0.05    2690.09 us      58.00 us 2704761.00 us           3206        OPEN
      0.10  119978.25 us      97.00 us 9406684.00 us            154     SETATTR
      0.18     101.73 us      28.00 us  700477.00 us         313379       FSTAT
      0.23    1059.84 us      25.00 us 2716124.00 us          38255      LOOKUP
      0.47    1024.11 us      54.00 us 6197164.00 us          81455    FXATTROP
      1.72    2984.00 us      15.00 us 37098954.00 us         103020    FINODELK
      5.92   44315.32 us      51.00 us 24731536.00 us          23957       FSYNC
     13.27    2399.78 us      25.00 us 22089540.00 us         991005        READ
     37.00    5980.43 us      52.00 us 22099889.00 us        1108976       WRITE
     41.04    5452.75 us      13.00 us 22102452.00 us        1349053     INODELK
 
    Duration: 10026 seconds
   Data Read: 80046027759 bytes
Data Written: 44496632320 bytes
 
Interval 1 Stats:
   Block Size:                256b+                 512b+                1024b+ 
 No. of Reads:                  983                  2696                  1059 
No. of Writes:                    0                   838                   185 
 
   Block Size:               2048b+                4096b+                8192b+ 
 No. of Reads:                  852                 85856                 51575 
No. of Writes:                  382                705802                 57812 
 
   Block Size:              16384b+               32768b+               65536b+ 
 No. of Reads:                52673                232093                 14984 
No. of Writes:                13499                  4908                  4242 
 
   Block Size:             131072b+ 
 No. of Reads:               460040 
No. of Writes:                 6411 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us           2093     RELEASE
      0.00       0.00 us       0.00 us       0.00 us           1093  RELEASEDIR
      0.00      53.38 us      26.00 us     111.00 us             16       FLUSH
      0.00     145.14 us      78.00 us     367.00 us             71 REMOVEXATTR
      0.00     190.96 us     114.00 us     298.00 us             71     SETATTR
      0.00     213.38 us      24.00 us    1145.00 us             90     READDIR
      0.00     263.28 us      20.00 us   28385.00 us            228          LK
      0.00     101.76 us       2.00 us     880.00 us           1093     OPENDIR
      0.01      93.60 us      27.00 us   10371.00 us           3090      STATFS
      0.02     537.47 us      17.00 us  193439.00 us           1038    GETXATTR
      0.03     297.44 us      35.00 us    9799.00 us           1990    READDIRP
      0.03    2357.28 us     110.00 us  382258.00 us            253     XATTROP
      0.04     385.93 us      58.00 us   47593.00 us           2091        OPEN
      0.04     114.86 us      24.00 us   61061.00 us           7715        STAT
      0.06     444.59 us      57.00 us  333240.00 us           3053     DISCARD
      0.42     316.24 us      25.00 us  290728.00 us          29823      LOOKUP
      0.73     257.92 us      54.00 us  344812.00 us          63296    FXATTROP
      1.37      98.30 us      28.00 us   67621.00 us         313172       FSTAT
      1.58    2124.69 us      51.00 us  849200.00 us          16717       FSYNC
      5.73     162.46 us      52.00 us  748492.00 us         794079       WRITE
      7.19    2065.17 us      16.00 us 37098954.00 us          78381    FINODELK
     36.44     886.32 us      25.00 us 2216436.00 us         925421        READ
     46.30    1178.04 us      13.00 us 1700704.00 us         884635     INODELK
 
    Duration: 7485 seconds
   Data Read: 71250527215 bytes
Data Written: 5119903744 bytes
 
Brick: ovirt3.nwfiber.com:/gluster/brick2/data
----------------------------------------------
Cumulative Stats:
   Block Size:                  1b+ 
 No. of Reads:                    0 
No. of Writes:              3264419 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us             90      FORGET
      0.00       0.00 us       0.00 us       0.00 us           9462     RELEASE
      0.00       0.00 us       0.00 us       0.00 us           4254  RELEASEDIR
      0.00      50.52 us      13.00 us     190.00 us             71       FLUSH
      0.00     186.97 us      87.00 us     713.00 us             86 REMOVEXATTR
      0.00      79.32 us      33.00 us     189.00 us            228          LK
      0.00     220.98 us     129.00 us     513.00 us             86     SETATTR
      0.01     259.30 us      26.00 us    2632.00 us            137     READDIR
      0.02     322.76 us     145.00 us    2125.00 us            321     XATTROP
      0.03     109.55 us       2.00 us    1258.00 us           1193     OPENDIR
      0.05      70.21 us      21.00 us     431.00 us           3196     DISCARD
      0.05     169.26 us      21.00 us    2315.00 us           1545    GETXATTR
      0.12     176.85 us      63.00 us    2844.00 us           3206        OPEN
      0.61     303.49 us      90.00 us    3085.00 us           9633       FSTAT
      2.44     305.66 us      28.00 us    3716.00 us          38230      LOOKUP
      4.52     266.22 us      55.00 us   53424.00 us          81455    FXATTROP
      6.96    1397.99 us      51.00 us   64822.00 us          23889       FSYNC
     16.48      84.74 us      25.00 us    6917.00 us         932592       WRITE
     30.16     106.90 us      13.00 us 3920189.00 us        1353046     INODELK
     38.55    1794.52 us      14.00 us 16210553.00 us         103039    FINODELK
 
    Duration: 66562 seconds
   Data Read: 0 bytes
Data Written: 3264419 bytes
 
Interval 1 Stats:
   Block Size:                  1b+ 
 No. of Reads:                    0 
No. of Writes:               794080 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us           2093     RELEASE
      0.00       0.00 us       0.00 us       0.00 us           1093  RELEASEDIR
      0.00      70.31 us      26.00 us     125.00 us             16       FLUSH
      0.00     193.10 us     103.00 us     713.00 us             71 REMOVEXATTR
      0.01     227.32 us     133.00 us     513.00 us             71     SETATTR
      0.01      79.32 us      33.00 us     189.00 us            228          LK
      0.01     259.83 us      35.00 us    1138.00 us             89     READDIR
      0.03     318.26 us     145.00 us    2047.00 us            253     XATTROP
      0.04     112.67 us       3.00 us    1258.00 us           1093     OPENDIR
      0.06     167.98 us      23.00 us    1951.00 us           1014    GETXATTR
      0.08      70.97 us      22.00 us     431.00 us           3053     DISCARD
      0.13     183.78 us      66.00 us    2844.00 us           2091        OPEN
      1.01     303.82 us      90.00 us    3085.00 us           9610       FSTAT
      3.27     316.59 us      30.00 us    3716.00 us          29820      LOOKUP
      5.83     265.79 us      59.00 us   53424.00 us          63296    FXATTROP
      7.95    1373.89 us      51.00 us   64822.00 us          16717       FSYNC
     23.17     851.99 us      14.00 us 16210553.00 us          78555    FINODELK
     24.04      87.44 us      27.00 us    6917.00 us         794081       WRITE
     34.36     111.91 us      14.00 us  984871.00 us         886790     INODELK
 
    Duration: 7485 seconds
   Data Read: 0 bytes
Data Written: 794080 bytes


-----------------------
Here is the data from the volume that is backed by the SHDDs and has one failed disk:
[root@ovirt2 yum.repos.d]# gluster volume profile data-hdd info
Brick: 172.172.1.12:/gluster/brick3/data-hdd
--------------------------------------------
Cumulative Stats:
   Block Size:                256b+                 512b+                1024b+ 
 No. of Reads:                 1702                    86                    16 
No. of Writes:                    0                   767                    71 
 
   Block Size:               2048b+                4096b+                8192b+ 
 No. of Reads:                   19                 51841                  2049 
No. of Writes:                   76                 60668                 35727 
 
   Block Size:              16384b+               32768b+               65536b+ 
 No. of Reads:                 1744                   639                  1088 
No. of Writes:                 8524                  2410                  1285 
 
   Block Size:             131072b+ 
 No. of Reads:               771999 
No. of Writes:                29584 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us           2902     RELEASE
      0.00       0.00 us       0.00 us       0.00 us           1517  RELEASEDIR
      0.00     197.00 us     197.00 us     197.00 us              1   FTRUNCATE
      0.00      70.24 us      16.00 us     758.00 us             51       FLUSH
      0.00     143.93 us      82.00 us     305.00 us             57 REMOVEXATTR
      0.00     178.63 us     105.00 us     712.00 us             60     SETATTR
      0.00      67.30 us      19.00 us     572.00 us            555          LK
      0.00     322.80 us      23.00 us    4673.00 us            138     READDIR
      0.00     336.56 us     106.00 us   11994.00 us            237     XATTROP
      0.00      84.70 us      28.00 us    1071.00 us           3469      STATFS
      0.01     387.75 us       2.00 us  146017.00 us           1467     OPENDIR
      0.01     148.59 us      21.00 us   64374.00 us           4454        STAT
      0.02     783.02 us      16.00 us   93502.00 us           1902    GETXATTR
      0.03    1516.10 us      17.00 us  210690.00 us           1364     ENTRYLK
      0.03    2555.47 us     300.00 us  674454.00 us           1064    READDIRP
      0.07      85.74 us      19.00 us   68340.00 us          62849       FSTAT
      0.07    1978.12 us      59.00 us  202596.00 us           2729        OPEN
      0.22     708.57 us      15.00 us  394799.00 us          25447      LOOKUP
      5.94    2331.74 us      15.00 us 1099530.00 us         207534    FINODELK
      7.31    8311.75 us      58.00 us 1800216.00 us          71668    FXATTROP
     12.49    7735.19 us      51.00 us 3595513.00 us         131642       WRITE
     17.70     957.08 us      16.00 us 13700466.00 us        1508160     INODELK
     24.55    2546.43 us      26.00 us 5077347.00 us         786060        READ
     31.56   49699.15 us      47.00 us 3746331.00 us          51777       FSYNC
 
    Duration: 10101 seconds
   Data Read: 101562897361 bytes
Data Written: 4834450432 bytes
 
Interval 0 Stats:
   Block Size:                256b+                 512b+                1024b+ 
 No. of Reads:                 1702                    86                    16 
No. of Writes:                    0                   767                    71 
 
   Block Size:               2048b+                4096b+                8192b+ 
 No. of Reads:                   19                 51841                  2049 
No. of Writes:                   76                 60668                 35727 
 
   Block Size:              16384b+               32768b+               65536b+ 
 No. of Reads:                 1744                   639                  1088 
No. of Writes:                 8524                  2410                  1285 
 
   Block Size:             131072b+ 
 No. of Reads:               771999 
No. of Writes:                29584 
 %-latency   Avg-latency   Min-Latency   Max-Latency   No. of calls         Fop
 ---------   -----------   -----------   -----------   ------------        ----
      0.00       0.00 us       0.00 us       0.00 us           2902     RELEASE
      0.00       0.00 us       0.00 us       0.00 us           1517  RELEASEDIR
      0.00     197.00 us     197.00 us     197.00 us              1   FTRUNCATE
      0.00      70.24 us      16.00 us     758.00 us             51       FLUSH
      0.00     143.93 us      82.00 us     305.00 us             57 REMOVEXATTR
      0.00     178.63 us     105.00 us     712.00 us             60     SETATTR
      0.00      67.30 us      19.00 us     572.00 us            555          LK
      0.00     322.80 us      23.00 us    4673.00 us            138     READDIR
      0.00     336.56 us     106.00 us   11994.00 us            237     XATTROP
      0.00      84.70 us      28.00 us    1071.00 us           3469      STATFS
      0.01     387.75 us       2.00 us  146017.00 us           1467     OPENDIR
      0.01     148.59 us      21.00 us   64374.00 us           4454        STAT
      0.02     783.02 us      16.00 us   93502.00 us           1902    GETXATTR
      0.03    1516.10 us      17.00 us  210690.00 us           1364     ENTRYLK
      0.03    2555.47 us     300.00 us  674454.00 us           1064    READDIRP
      0.07      85.73 us      19.00 us   68340.00 us          62849       FSTAT
      0.07    1978.12 us      59.00 us  202596.00 us           2729        OPEN
      0.22     708.57 us      15.00 us  394799.00 us          25447      LOOKUP
      5.94    2334.57 us      15.00 us 1099530.00 us         207534    FINODELK
      7.31    8311.49 us      58.00 us 1800216.00 us          71668    FXATTROP
     12.49    7735.32 us      51.00 us 3595513.00 us         131642       WRITE
     17.71     957.08 us      16.00 us 13700466.00 us        1508160     INODELK
     24.56    2546.42 us      26.00 us 5077347.00 us         786060        READ
     31.54   49651.63 us      47.00 us 3746331.00 us          51777       FSYNC
 
    Duration: 10101 seconds
   Data Read: 101562897361 bytes
Data Written: 4834450432 bytes


On Tue, May 29, 2018 at 2:55 PM, Jim Kusznir <jim@palousetech.com> wrote:
Thank you for your response.

I have 4 gluster volumes.  3 are replica 2 + arbitrator.  replica bricks are on ovirt1 and ovirt2, arbitrator on ovirt3.  The 4th volume is replica 3, with a brick on all three ovirt machines.

The first 3 volumes are on an SSD disk; the 4th is on a Seagate SSHD (same in all three machines).  On ovirt3, the SSHD has reported hard IO failures, and that brick is offline.  However, the other two replicas are fully operational (although they still show contents in the heal info command that won't go away, but that may be the case until I replace the failed disk).

What is bothering me is that ALL 4 gluster volumes are showing horrible performance issues.  At this point, as the bad disk has been completely offlined, I would expect gluster to perform at normal speed, but that is definitely not the case.

I've also noticed that the performance hits seem to come in waves: things seem to work acceptably (but slow) for a while, then suddenly, its as if all disk IO on all volumes (including non-gluster local OS disk volumes for the hosts) pause for about 30 seconds, then IO resumes again.  During those times, I start getting VM not responding and host not responding notices as well as the applications having major issues.

I've shut down most of my VMs and am down to just my essential core VMs (shedded about 75% of my VMs).  I still am experiencing the same issues.

Am I correct in believing that once the failed disk was brought offline that performance should return to normal?

On Tue, May 29, 2018 at 1:27 PM, Alex K <rightkicktech@gmail.com> wrote:
I would check disks status and accessibility of mount points where your gluster volumes reside.

On Tue, May 29, 2018, 22:28 Jim Kusznir <jim@palousetech.com> wrote:
On one ovirt server, I'm now seeing these messages:
[56474.239725] blk_update_request: 63 callbacks suppressed
[56474.239732] blk_update_request: I/O error, dev dm-2, sector 0
[56474.240602] blk_update_request: I/O error, dev dm-2, sector 3905945472
[56474.241346] blk_update_request: I/O error, dev dm-2, sector 3905945584
[56474.242236] blk_update_request: I/O error, dev dm-2, sector 2048
[56474.243072] blk_update_request: I/O error, dev dm-2, sector 3905943424
[56474.243997] blk_update_request: I/O error, dev dm-2, sector 3905943536
[56474.247347] blk_update_request: I/O error, dev dm-2, sector 0
[56474.248315] blk_update_request: I/O error, dev dm-2, sector 3905945472
[56474.249231] blk_update_request: I/O error, dev dm-2, sector 3905945584
[56474.250221] blk_update_request: I/O error, dev dm-2, sector 2048




On Tue, May 29, 2018 at 11:59 AM, Jim Kusznir <jim@palousetech.com> wrote:
I see in messages on ovirt3 (my 3rd machine, the one upgraded to 4.2):

May 29 11:54:41 ovirt3 ovs-vsctl: ovs|00001|db_ctl_base|ERR|unix:/var/run/openvswitch/db.sock: database connection failed (No such file or directory)
May 29 11:54:51 ovirt3 ovs-vsctl: ovs|00001|db_ctl_base|ERR|unix:/var/run/openvswitch/db.sock: database connection failed (No such file or directory)
May 29 11:55:01 ovirt3 ovs-vsctl: ovs|00001|db_ctl_base|ERR|unix:/var/run/openvswitch/db.sock: database connection failed (No such file or directory)
(appears a lot).

I also found on the ssh session of that, some sysv warnings about the backing disk for one of the gluster volumes (straight replica 3).  The glusterfs process for that disk on that machine went offline.  Its my understanding that it should continue to work with the other two machines while I attempt to replace that disk, right?  Attempted writes (touching an empty file) can take 15 seconds, repeating it later will be much faster.

Gluster generates a bunch of different log files, I don't know what ones you want, or from which machine(s).

How do I do "volume profiling"?

Thanks!

On Tue, May 29, 2018 at 11:53 AM, Sahina Bose <sabose@redhat.com> wrote:
Do you see errors reported in the mount logs for the volume? If so, could you attach the logs?
Any issues with your underlying disks. Can you also attach output of volume profiling?

On Wed, May 30, 2018 at 12:13 AM, Jim Kusznir <jim@palousetech.com> wrote:
Ok, things have gotten MUCH worse this morning.  I'm getting random errors from VMs, right now, about a third of my VMs have been paused due to storage issues, and most of the remaining VMs are not performing well.

At this point, I am in full EMERGENCY mode, as my production services are now impacted, and I'm getting calls coming in with problems...

I'd greatly appreciate help...VMs are running VERY slowly (when they run), and they are steadily getting worse.  I don't know why.  I was seeing CPU peaks (to 100%) on several VMs, in perfect sync, for a few minutes at a time (while the VM became unresponsive and any VMs I was logged into that were linux were giving me the CPU stuck messages in my origional post).  Is all this storage related?

I also have two different gluster volumes for VM storage, and only one had the issues, but now VMs in both are being affected at the same time and same way.

--Jim

On Mon, May 28, 2018 at 10:50 PM, Sahina Bose <sabose@redhat.com> wrote:
[Adding gluster-users to look at the heal issue]

On Tue, May 29, 2018 at 9:17 AM, Jim Kusznir <jim@palousetech.com> wrote:
Hello:

I've been having some cluster and gluster performance issues lately.  I also found that my cluster was out of date, and was trying to apply updates (hoping to fix some of these), and discovered the ovirt 4.1 repos were taken completely offline.  So, I was forced to begin an upgrade to 4.2.  According to docs I found/read, I needed only add the new repo, do a yum update, reboot, and be good on my hosts (did the yum update, the engine-setup on my hosted engine).  Things seemed to work relatively well, except for a gluster sync issue that showed up.

My cluster is a 3 node hyperconverged cluster.  I upgraded the hosted engine first, then engine 3.  When engine 3 came back up, for some reason one of my gluster volumes would not sync.  Here's sample output:

[root@ovirt3 ~]# gluster volume heal data-hdd info
Brick 172.172.1.11:/gluster/brick3/data-hdd
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/48d7ecb8-7ac5-4725-bca5-b3519681cf2f/0d6080b0-7018-4fa3-bb82-1dd9ef07d9b9 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/647be733-f153-4cdc-85bd-ba72544c2631/b453a300-0602-4be1-8310-8bd5abe00971 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/6da854d1-b6be-446b-9bf0-90a0dbbea830/3c93bd1f-b7fa-4aa2-b445-6904e31839ba 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/7f647567-d18c-44f1-a58e-9b8865833acb/f9364470-9770-4bb1-a6b9-a54861849625 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/f3c8e7aa-6ef2-42a7-93d4-e0a4df6dd2fa/2eb0b1ad-2606-44ef-9cd3-ae59610a504b 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/b1ea3f62-0f05-4ded-8c82-9c91c90e0b61/d5d6bf5a-499f-431d-9013-5453db93ed32 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/8c8b5147-e9d6-4810-b45b-185e3ed65727/16f08231-93b0-489d-a2fd-687b6bf88eaa 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/12924435-b9c2-4aab-ba19-1c1bc31310ef/07b3db69-440e-491e-854c-bbfa18a7cff2 
Status: Connected
Number of entries: 8

Brick 172.172.1.12:/gluster/brick3/data-hdd
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/48d7ecb8-7ac5-4725-bca5-b3519681cf2f/0d6080b0-7018-4fa3-bb82-1dd9ef07d9b9 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/647be733-f153-4cdc-85bd-ba72544c2631/b453a300-0602-4be1-8310-8bd5abe00971 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/b1ea3f62-0f05-4ded-8c82-9c91c90e0b61/d5d6bf5a-499f-431d-9013-5453db93ed32 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/6da854d1-b6be-446b-9bf0-90a0dbbea830/3c93bd1f-b7fa-4aa2-b445-6904e31839ba 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/7f647567-d18c-44f1-a58e-9b8865833acb/f9364470-9770-4bb1-a6b9-a54861849625 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/8c8b5147-e9d6-4810-b45b-185e3ed65727/16f08231-93b0-489d-a2fd-687b6bf88eaa 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/12924435-b9c2-4aab-ba19-1c1bc31310ef/07b3db69-440e-491e-854c-bbfa18a7cff2 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/f3c8e7aa-6ef2-42a7-93d4-e0a4df6dd2fa/2eb0b1ad-2606-44ef-9cd3-ae59610a504b 
Status: Connected
Number of entries: 8

Brick 172.172.1.13:/gluster/brick3/data-hdd
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/b1ea3f62-0f05-4ded-8c82-9c91c90e0b61/d5d6bf5a-499f-431d-9013-5453db93ed32 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/8c8b5147-e9d6-4810-b45b-185e3ed65727/16f08231-93b0-489d-a2fd-687b6bf88eaa 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/12924435-b9c2-4aab-ba19-1c1bc31310ef/07b3db69-440e-491e-854c-bbfa18a7cff2 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/f3c8e7aa-6ef2-42a7-93d4-e0a4df6dd2fa/2eb0b1ad-2606-44ef-9cd3-ae59610a504b 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/647be733-f153-4cdc-85bd-ba72544c2631/b453a300-0602-4be1-8310-8bd5abe00971 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/48d7ecb8-7ac5-4725-bca5-b3519681cf2f/0d6080b0-7018-4fa3-bb82-1dd9ef07d9b9 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/6da854d1-b6be-446b-9bf0-90a0dbbea830/3c93bd1f-b7fa-4aa2-b445-6904e31839ba 
/cc65f671-3377-494a-a7d4-1d9f7c3ae46c/images/7f647567-d18c-44f1-a58e-9b8865833acb/f9364470-9770-4bb1-a6b9-a54861849625 
Status: Connected
Number of entries: 8

---------
Its been in this state for a couple days now, and bandwidth monitoring shows no appreciable data moving.  I've tried repeatedly commanding a full heal from all three clusters in the node.  Its always the same files that need healing.

When running gluster volume heal data-hdd statistics, I see sometimes different information, but always some number of "heal failed" entries.  It shows 0 for split brain.

I'm not quite sure what to do.  I suspect it may be due to nodes 1 and 2 still being on the older ovirt/gluster release, but I'm afraid to upgrade and reboot them until I have a good gluster sync (don't need to create a split brain issue).  How do I proceed with this?

Second issue: I've been experiencing VERY POOR performance on most of my VMs.  To the tune that logging into a windows 10 vm via remote desktop can take 5 minutes, launching quickbooks inside said vm can easily take 10 minutes.  On some linux VMs, I get random messages like this:
Message from syslogd@unifi at May 28 20:39:23 ...
 kernel:[6171996.308904] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [mongod:14766]

(the process and PID are often different)

I'm not quite sure what to do about this either.  My initial thought was upgrad everything to current and see if its still there, but I cannot move forward with that until my gluster is healed...

Thanks!
--Jim

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