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vdsm with NFS storage reboot or shutdown more than 15 minutes. with error failed to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or resource busy
by lifuqiong＠sunyainfo.com 27 Oct '20

27 Oct '20

Hi everyone: I met a problem as follows: Description of problem: When exec "reboot" or "shutdown -h 0" cmd on vdsm server, the vdsm server will reboot or shutdown more than 30 minutes. the screen shows '[FAILED] Failed unmouting /rhev/data-center/mnt/172.18.81.41:_home_nfs_data'. other messages may be useful: This message was shown in the screen. [] watchdog: watchdog0: watchdog did not stop! []systemd-shutdown[5594]: Failed to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or resource busy []systemd-shutdown[1]: Failed to wait for process: Protocol error []systemd-shutdown[5595]: Failed to remount '/' read-only: Device or resource busy []systemd-shutdown[1]: Failed to wait for process: Protocol error dracut Warning: Killing all remaining processes dracut Warning: Killing all remaining processes Version-Release number of selected component (if applicable): Software Version:4.2.8.2-1.el7 OS: CentOS Linux release 7.5.1804 (Core)How reproducible: 100% Steps to Reproduce: 1. my test enviroment is one Ovirt engine(172.17.81.17) with 4 vdsm servers, exec "reboot" cmd in one of the vdsm servers(172.17.99.105), the server will reboot more than 30 minutes.ovirt-engine : 172.17.81.17/16 vdsm: 172.17.99.105/16 nfs server: 172.17.81.14/16Actual results: As above. the server will reboot more than 30 minutes Expected results: the server will reboot in a short time. What I have done: I have capture packet in nfs server while vdsm is rebooting, I found vdsm is always sending nfs packet to nfs server circularly as follows:this is some log files while I reboot vdsm 172.17.99.105 in 2020-10-26 22:12:34. Some conclusion is: 1. the vdsm.log said the vdsm 2020-10-26 22:12:34,461+0800 ERROR (check/loop) [storage.Monitor] Error checking path /rhev/data-center/mnt/172.18.81.14:_home_nfs_data/02c4c6ea-7ca9-40f1-a1d0-f1636bc1824e/dom_md/metadata 2. the sanlock.log said 2020-10-26 22:13:05 1454 [3301]: s1 delta_renew read timeout 10 sec offset 0 /rhev/data-center/mnt/172.18.81.14:_home_nfs_data/02c4c6ea-7ca9-40f1-a1d0-f1636bc1824e/dom_md/ids 3. there is nothing message import to this issue.The logs is in the attachment.I'm very appreciate if anyone can help me. Thank you.

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update host to 4.4: manual ovn config necessary?
by Gianluca Cecchi 27 Oct '20

27 Oct '20

Hello, I have updated an external engine from 4.3 to 4.4 and the OVN configuration seems to have been retained: [root@ovmgr1 ovirt-engine]# ovn-nbctl show switch fc2fc4e8-ff71-4ec3-ba03-536a870cd483 (ovirt-ovn192-1e252228-ade7-47c8-acda-5209be358fcf) switch 101d686d-7930-4176-b41a-b306d7c30a1a (ovirt-ovn17217-4bb1d1a7-020d-4843-9ac7-dc4204b528e5) port c1ec60a4-b4f3-4cb5-8985-43c086156e83 addresses: ["00:1a:4a:19:01:89 dynamic"] port 174b69f8-00ed-4e25-96fc-7db11ea8a8b9 addresses: ["00:1a:4a:19:01:59 dynamic"] port ccbd6188-78eb-437b-9df9-9929e272974b addresses: ["00:1a:4a:19:01:88 dynamic"] port 7e96ca70-c9e3-4efe-9ac5-e56c18476437 addresses: ["00:1a:4a:19:01:83 dynamic"] port d2c2d9f1-8fc3-4f17-9ada-76fe3a168e65 addresses: ["00:1a:4a:19:01:5e dynamic"] port 4d13d63e-5ff3-41c1-9b6b-feac343b514b addresses: ["00:1a:4a:19:01:60 dynamic"] port 66359e79-56c4-47e0-8196-2241706329f6 addresses: ["00:1a:4a:19:01:68 dynamic"] switch 87012fa6-ffaa-4fb0-bd91-b3eb7c0a2fc1 (ovirt-ovn193-d43a7928-0dc8-49d3-8755-5d766dff821a) port 2ae7391b-4297-4247-a315-99312f6392e6 addresses: ["00:1a:4a:19:01:51 dynamic"] switch 9e77163a-c4e4-4abf-a554-0388e6b5e4ce (ovirt-ovn172-4ac7ba24-aad5-432d-b1d2-672eaeea7d63) [root@ovmgr1 ovirt-engine]# Then I updated one of the 3 Linux hosts (not node ng) through remove from web admin gui, install from scratch of CentOS 8.2 OS, configure repos and then add new host (with the same name) in engine and I was able to connect to storage (iSCSI) and start VMs in general on the host. Coming to OVN part it seems it has not been configured on the upgraded host. Is it expected? Eg on engine I only see chassis for the 2 hosts still in 4.3: [root@ovmgr1 ovirt-engine]# ovn-sbctl show Chassis "b8872ab5-4606-4a79-b77d-9d956a18d349" hostname: "ov301.mydomain" Encap geneve ip: "10.4.192.34" options: {csum="true"} Port_Binding "174b69f8-00ed-4e25-96fc-7db11ea8a8b9" Port_Binding "66359e79-56c4-47e0-8196-2241706329f6" Chassis "ddecf0da-4708-4f93-958b-6af365a5eeca" hostname: "ov300.mydomain" Encap geneve ip: "10.4.192.33" options: {csum="true"} Port_Binding "ccbd6188-78eb-437b-9df9-9929e272974b" [root@ovmgr1 ovirt-engine]# What to do to add the upgraded 4.4 host? Can they live together for the OVN part? Thanks, Gianluca

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when configuring multi path logical network selection area is empty, hence not able to configure multipathing
by dhanaraj.ramesh＠yahoo.com 27 Oct '20

27 Oct '20

Hi team, I have 4 node cluster where in each node I configured 2 dedicated 10 gig NIC with dedicated subnet each ( NIC 1 = 10.10.10.0/24, NIC 2 = 10.10.20.0/24 ) and on the array side I configured 2 targets with 10.10.10.0 /24 & another 2 target with 10.10.20.0/24 subnet. without any errors I could check in all four paths and able to mount iscsi luns in all 4 nodes. However when i try to configure mutipathing at Data center level I could see all the paths but not the logical network, it stays empty although I configured logical network label for both NICs with dedicated names as ISCSI1 & ISCI2. these logical names visible and green at the host network level, no errors, they are just L2 IP config Am I missing something here? what else I should do to enable multiplathing

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vdsm with NFS storage reboot or shutdown more than 15 minutes. with error failed to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or resource busy
by lifuqiong＠sunyainfo.com 27 Oct '20

27 Oct '20

Hi everyone: Description of problem: When exec "reboot" or "shutdown -h 0" cmd on vdsm server, the vdsm server will reboot or shutdown more than 30 minutes. the screen shows '[FAILED] Failed unmouting /rhev/data-center/mnt/172.18.81.41:_home_nfs_data'. other messages may be useful: [] watchdog: watchdog0: watchdog did not stop! []systemd-shutdown[5594]: Failed to unmount /rhev/data-center/mnt/172.18.81.14:_home_nfs_data: Device or resource busy []systemd-shutdown[1]: Failed to wait for process: Protocol error []systemd-shutdown[5595]: Failed to remount '/' read-only: Device or resource busy []systemd-shutdown[1]: Failed to wait for process: Protocol error dracut Warning: Killing all remaining processes dracut Warning: Killing all remaining processes Version-Release number of selected component (if applicable): Software Version:4.2.8.2-1.el7 OS: CentOS Linux release 7.5.1804 (Core) How reproducible: 100% Steps to Reproduce: 1. my test enviroment is one Ovirt engine(172.17.81.17) with 4 vdsm servers, exec "reboot" cmd in one of the vdsm servers(172.17.99.105), the server will reboot more than 30 minutes.ovirt-engine : 172.17.81.17/16 vdsm: 172.17.99.105/16 nfs server: 172.17.81.14/16Actual results: As above. the server will reboot more than 30 minutes Expected results: the server will reboot in a short time. What I have done: I have capture packet in nfs server while vdsm is rebooting, I found vdsm is always sending nfs packet to nfs server circularly as follows:this is some log files while I reboot vdsm 172.17.99.105 in 2020-10-26 22:12:34. Some conclusion is: 1. the vdsm.log said the vdsm 2020-10-26 22:12:34,461+0800 ERROR (check/loop) [storage.Monitor] Error checking path /rhev/data-center/mnt/172.18.81.14:_home_nfs_data/02c4c6ea-7ca9-40f1-a1d0-f1636bc1824e/dom_md/metadata 2. the sanlock.log said 2020-10-26 22:13:05 1454 [3301]: s1 delta_renew read timeout 10 sec offset 0 /rhev/data-center/mnt/172.18.81.14:_home_nfs_data/02c4c6ea-7ca9-40f1-a1d0-f1636bc1824e/dom_md/ids 3. there is nothing message import to this issue.The logs is in the attachment.I'm very appreciate if anyone can help me. Thank you.

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problems installing standard Linux as nodes in 4.4
by Gianluca Cecchi 27 Oct '20

27 Oct '20

Hello, due to missing megaraid_sas kernel module in RH EL 8 and CentOS 8, I'm deploying a new oVirt host using CentOS 8 and elrepo kernel driver and not ovirt node ng. Based on installation guide: - install CentOS 8.2 ("Server" chosen as base environment) - yum install https://resources.ovirt.org/pub/yum-repo/ovirt-release44.rpm - yum install cockpit-ovirt-dashboard - yum update - reboot Try to add host from engine web admin gui, I get: Host ov200 installation failed. Failed to execute Ansible host-deploy role: Failed to execute call to start playbook. . Please check logs for more details: /var/log/ovirt-engine/ansible-runner-service.log. Inside the log file above on engine: 2020-10-08 11:58:43,389 - runner_service.controllers.hosts - DEBUG - Request received, content-type :None 2020-10-08 11:58:43,390 - runner_service.controllers.hosts - INFO - 127.0.0.1 - GET /api/v1/hosts/ov200 2020-10-08 11:58:43,398 - runner_service.controllers.playbooks - DEBUG - Request received, content-type :application/json; charset=UTF-8 2020-10-08 11:58:43,398 - runner_service.controllers.playbooks - INFO - 127.0.0.1 - POST /api/v1/playbooks/ovirt-host-deploy.yml Do I have to enable any module or pre-install anything else before adding it? BTW: on host [root@ov200 ~]# rpm -q ansible ansible-2.9.13-2.el8.noarch [root@ov200 ~]# Thanks, Gianluca

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Left over hibernation disks that we can't delete
by james＠deanimaconsulting.com 27 Oct '20

27 Oct '20

After putting the VMs in our environment into hibernation, one of the VMs that came out of hibernation still has the metadata and memory dumb hanging around as 2 disks with status ok. They are not attached to any VM but we are unable to delete them. The VM in question came out of the hibernation without any issues. If they are no longer required how can we tidy them up? Thanks, James

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adminstration portal wont complete load, looping
by Philip Brown 27 Oct '20

27 Oct '20

I have an odd situation: When I go to https://ovengine/ovirt-engine/webadmin/?locale=en_US after authentication passes... it shows the top banner of oVirt OPEN VIRTUALIZATION MANAGER and the Loading ... in the center. but never gets past that. Any suggestions on how I could investigate and fix this? background: I recently updated certs to be signed wildcard certs, but this broke consoles somehow. So I restored the original certs, and restarted things... but got stuck with this. Interestingly, the VM portal loads fine. But not the admin portal. -- Philip Brown| Sr. Linux System Administrator | Medata, Inc. 5 Peters Canyon Rd Suite 250 Irvine CA 92606 Office 714.918.1310| Fax 714.918.1325 pbrown(a)medata.com| www.medata.com

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reinstall 4.3 host from 4.4 engine
by Gianluca Cecchi 26 Oct '20

26 Oct '20

Hello, supposing I'm with an already upgraded 4.4.2 engine and in my environment I still have some 4.3.10 hosts based on CentOS Linux 7.x (or 4.3.10 ng nodes), is it supported to reinstall such host in case of any modification in configuration? Or will the engine try to install them in a "4.4" way? Thanks in advance, Gianluca

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Manual VM Migration fails
by Anton Louw 26 Oct '20

26 Oct '20

Hello Everybody, I am having a strange issue. When I try and manually migrate a VM from one host to another, I get an error stating: "Migration failed (VM: VM1, Source: node6.example.com, Destination: node3.example.com)" I have tried with a few different machines, and it pops up with the same error. I have attached the VDSM logs of both source and destination nodes. The time frame is 16:01 I see the below in that time frame, but not quite sure what I need to change: 2020-10-23 16:01:14,419+0200 ERROR (migsrc/42186f82) [virt.vm] (vmId='42186f82-b84c-7e65-e736-e6331acd04ed') Failed to migrate (migration:450) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 431, in _regular_run time.time(), migrationParams, machineParams File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 505, in _startUnderlyingMigration self._perform_with_conv_schedule(duri, muri) File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 591, in _perform_with_conv_schedule self._perform_migration(duri, muri) File "/usr/lib/python2.7/site-packages/vdsm/virt/migration.py", line 525, in _perform_migration self._migration_flags) File "/usr/lib/python2.7/site-packages/vdsm/virt/virdomain.py", line 100, in f ret = attr(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/libvirtconnection.py", line 131, in wrapper ret = f(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/common/function.py", line 94, in wrapper return func(inst, *args, **kwargs) File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1781, in migrateToURI3 if ret == -1: raise libvirtError ('virDomainMigrateToURI3() failed', dom=self) libvirtError: operation failed: guest CPU doesn't match specification: missing features: spec-ctrl,ssbd Anton Louw Cloud Engineer: Storage and Virtualization ______________________________________ D: 087 805 1572 | M: N/A A: Rutherford Estate, 1 Scott Street, Waverley, Johannesburg anton.louw(a)voxtelecom.co.za www.vox.co.za

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oVirt test clustered DOA after upgrade to latest 4.4.2 (AFAIK). Network issue?
by Gilboa Davara 26 Oct '20

26 Oct '20

Hello all, I just upgraded one of my test oVirt setups to latest. Post reboot, the machine lost network and hosted engine didn't start. When I connected to the machine, I noticed all the /etc/sysconfig/network-scripts/ifcfg-* files disappeared. No idea why / how. (Possibly I did something wrong and forgot about it.) Long story story short, I copied the two missing files (ifcfg-onb0 ethernet device configuration and the ifcfg-ovirtmgmt bridge configuration) from another ovirt host, changed the ovirtmgmt IP address and UUID to match the UUID reported in logs as missing and restarted NetworkManager and restarted all the oVirt related services (vdsmd, supervdsmd, ovirt-*, etc). Sadly enough, even with both onb0 and ovirtmgmt up, vdsm still complains about the missing network (ovirtmgmt) and refuses to start the hosted engine. Reboot doesn't seem to change anything. In the main log I see the following errors: Oct 22 16:33:31 office-wx-otest vdsm[2634]: WARN Attempting to remove a non existing network: ovirtmgmt/1da8c5b7-999c-4ada-8287-1f35de6ce21d Oct 22 16:33:31 office-wx-otest vdsm[2634]: WARN Attempting to remove a non existing net user: ovirtmgmt/1da8c5b7-999c-4ada-8287-1f35de6ce21d Oct 22 16:33:31 office-wx-otest vdsm[2634]: WARN Attempting to remove a non existing network: ovirtmgmt/1da8c5b7-999c-4ada-8287-1f35de6ce21d Oct 22 16:33:31 office-wx-otest vdsm[2634]: WARN Attempting to remove a non existing net user: ovirtmgmt/1da8c5b7-999c-4ada-8287-1f35de6ce21d As it is one of my oVirt test setup, I can simply redeploy the host and continue from there, but I rather use this experience to learn how to fix oVirt such issues in the future. Logs attached. https://drive.google.com/file/d/12ugy6CuaFaMvXYt6uGT4D_EHIW6nXttb/view?usp=… $ PAGER= nmcli connection show NAME UUID TYPE DEVICE ovirtmgmt 1da8c5b7-999c-4ada-8287-1f35de6ce21d bridge ovirtmgmt onb0 48332db3-8939-bff3-6b71-772a28c9e7b8 ethernet onb0 $ PAGER= nmcli device show GENERAL.DEVICE: ovirtmgmt GENERAL.TYPE: bridge GENERAL.HWADDR: FC:AA:14:6B:A8:E0 GENERAL.MTU: 1500 GENERAL.STATE: 100 (connected) GENERAL.CONNECTION: ovirtmgmt GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/2 IP4.ADDRESS[1]: 192.168.2.117/24 IP4.GATEWAY: 192.168.2.100 IP4.ROUTE[1]: dst = 192.168.2.0/24, nh = 0.0.0.0, mt = 425 IP4.ROUTE[2]: dst = 0.0.0.0/0, nh = 192.168.2.100, mt = 425 IP4.DNS[1]: 192.168.2.100 IP4.DNS[2]: 8.8.8.8 IP6.GATEWAY: -- GENERAL.DEVICE: onb0 GENERAL.TYPE: ethernet GENERAL.HWADDR: FC:AA:14:6B:A8:E0 GENERAL.MTU: 1500 GENERAL.STATE: 100 (connected) GENERAL.CONNECTION: onb0 GENERAL.CON-PATH: /org/freedesktop/NetworkManager/ActiveConnection/3 WIRED-PROPERTIES.CARRIER: on IP4.GATEWAY: -- GENERAL.DEVICE: ;vdsmdummy; GENERAL.TYPE: bridge GENERAL.HWADDR: 92:8B:9A:5E:C1:3E GENERAL.MTU: 1500 GENERAL.STATE: 10 (unmanaged) GENERAL.CONNECTION: -- GENERAL.CON-PATH: -- IP4.GATEWAY: -- IP6.GATEWAY: -- GENERAL.DEVICE: lo GENERAL.TYPE: loopback GENERAL.HWADDR: 00:00:00:00:00:00 GENERAL.MTU: 65536 GENERAL.STATE: 10 (unmanaged) GENERAL.CONNECTION: -- GENERAL.CON-PATH: -- IP4.ADDRESS[1]: 127.0.0.1/8 IP4.GATEWAY: -- IP6.GATEWAY: -- GENERAL.DEVICE: br-int GENERAL.TYPE: openvswitch GENERAL.HWADDR: 8E:15:6A:F8:3C:45 GENERAL.MTU: 1500 GENERAL.STATE: 10 (unmanaged) GENERAL.CONNECTION: -- GENERAL.CON-PATH: -- IP4.GATEWAY: -- IP6.GATEWAY: -- GENERAL.DEVICE: ovs-system GENERAL.TYPE: openvswitch GENERAL.HWADDR: E2:09:EA:A2:BD:70 GENERAL.MTU: 1500 GENERAL.STATE: 10 (unmanaged) GENERAL.CONNECTION: -- GENERAL.CON-PATH: -- IP4.GATEWAY: -- IP6.GATEWAY: - Gilboa office-wx-otest-vdsm.bz2 <https://drive.google.com/file/d/12ugy6CuaFaMvXYt6uGT4D_EHIW6nXttb/view?usp=…>

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