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TASK [ovirt.hosted_engine_setup : Get local VM IP] Problem
by Emre Özkan 24 Aug '19

24 Aug '19

hi guys, ı waiting this part when I try to install with hosted-engine --deploy command.have you got any knowledge about that.My environment(hyper-v running nested vm on azure and rhev running on hyper-v) [ INFO ] changed: [localhost] [ INFO ] TASK [ovirt.hosted_engine_setup : Create local VM] [ INFO ] changed: [localhost] [ INFO ] TASK [ovirt.hosted_engine_setup : Get local VM IP]

1 0

numa pinning and reserved hugepages (1G) Bug in scheduler calculation or decision ?
by Ralf Schenk 24 Aug '19

24 Aug '19

Hello List, i ran into problems using numa-pinning and reserved hugepages. - My EPYC 7281 based Servers (Dual Socket) have 8 Numa-Nodes each having 32 GB of memory for a total of 256 GB System Memory - I'm using 192 x 1 GB hugepages reserved on the kernel cmdline default_hugepagesz=1G hugepagesz=1G hugepages=192 This reserves 24 hugepages on each numa-node. I wanted to pin a MariaDB VM using 32 GB (Custom Property hugepages=1048576) to numa-nodes 0-3 of CPU-Socket 1. Pinning in GUI etc. no problem. When trying to start the vm this can't be done since ovirt claims that the host can't fullfill the memory requirements - which is simply not correct since there were > 164 hugepages free. It should have taken 8 hugepages from each numa node 0-3 to fullfill the 32 GB Memory requirement. I also freed the system completely from other VM's but that didn't work either. Is it possible that the scheduler only takes into account the "free memory" (as seen in numactl -H below) *not reserved* by hugepages for its decisions ? Since the host has only < 8 GB of free mem per numa-node I can understand that VM was not able to start under that condition. VM is runnig and using 32 hugepages without pinning but a warning states "VM dbserver01b does not fit to a single NUMA node on host myhost.mydomain.de. This may negatively impact its performance. Consider using vNUMA and NUMA pinning for this VM." This is the numa Hardware Layout and hugepages usage now with other VM's running: from cat /proc/meminfo HugePages_Total: 192 HugePages_Free: 160 HugePages_Rsvd: 0 HugePages_Surp: 0 I can confirm that also under the condition of running other VM's there are at least 8 hugepages free for each numa-node 0-3: grep "" /sys/devices/system/node/*/hugepages/hugepages-1048576kB/free_hugepages /sys/devices/system/node/node0/hugepages/hugepages-1048576kB/free_hugepages:8 /sys/devices/system/node/node1/hugepages/hugepages-1048576kB/free_hugepages:23 /sys/devices/system/node/node2/hugepages/hugepages-1048576kB/free_hugepages:20 /sys/devices/system/node/node3/hugepages/hugepages-1048576kB/free_hugepages:22 /sys/devices/system/node/node4/hugepages/hugepages-1048576kB/free_hugepages:16 /sys/devices/system/node/node5/hugepages/hugepages-1048576kB/free_hugepages:5 /sys/devices/system/node/node6/hugepages/hugepages-1048576kB/free_hugepages:19 /sys/devices/system/node/node7/hugepages/hugepages-1048576kB/free_hugepages:24 numactl -h: available: 8 nodes (0-7) node 0 cpus: 0 1 2 3 32 33 34 35 node 0 size: 32673 MB node 0 free: 3779 MB node 1 cpus: 4 5 6 7 36 37 38 39 node 1 size: 32767 MB node 1 free: 6162 MB node 2 cpus: 8 9 10 11 40 41 42 43 node 2 size: 32767 MB node 2 free: 6698 MB node 3 cpus: 12 13 14 15 44 45 46 47 node 3 size: 32767 MB node 3 free: 1589 MB node 4 cpus: 16 17 18 19 48 49 50 51 node 4 size: 32767 MB node 4 free: 2630 MB node 5 cpus: 20 21 22 23 52 53 54 55 node 5 size: 32767 MB node 5 free: 2487 MB node 6 cpus: 24 25 26 27 56 57 58 59 node 6 size: 32767 MB node 6 free: 3279 MB node 7 cpus: 28 29 30 31 60 61 62 63 node 7 size: 32767 MB node 7 free: 5513 MB node distances: node 0 1 2 3 4 5 6 7 0: 10 16 16 16 32 32 32 32 1: 16 10 16 16 32 32 32 32 2: 16 16 10 16 32 32 32 32 3: 16 16 16 10 32 32 32 32 4: 32 32 32 32 10 16 16 16 5: 32 32 32 32 16 10 16 16 6: 32 32 32 32 16 16 10 16 7: 32 32 32 32 16 16 16 10 -- *Ralf Schenk* fon +49 (0) 24 05 / 40 83 70 fax +49 (0) 24 05 / 40 83 759 mail *rs(a)databay.de* <mailto:rs@databay.de> *Databay AG* Jens-Otto-Krag-Straße 11 D-52146 Würselen *www.databay.de* <http://www.databay.de> Sitz/Amtsgericht Aachen • HRB:8437 • USt-IdNr.: DE 210844202 Vorstand: Ralf Schenk, Dipl.-Ing. Jens Conze, Aresch Yavari, Dipl.-Kfm. Philipp Hermanns Aufsichtsratsvorsitzender: Wilhelm Dohmen ------------------------------------------------------------------------

2 2

Need to enable STP on ovirt bridges
by ej.albany＠gmail.com 24 Aug '19

24 Aug '19

Hello. I have been trying to figure out an issue for a very long time. That issue relates to the ethernet and 10gb fc links that I have on my cluster being disabled any time a migration occurs. I believe this is because I need to have STP turned on in order to participate with the switch. However, there does not seem to be any way to tell oVirt to stop turning it off! Very frustrating. After entering a cronjob that enables stp on all bridges every 1 minute, the migration issue disappears.... Is there any way at all to do without this cronjob and set STP to be ON without having to resort to such a silly solution? Here are some details about my systems, if you need it. selinux is disabled. [root@swm-02 ~]# rpm -qa | grep ovirt ovirt-imageio-common-1.5.1-0.el7.x86_64 ovirt-release43-4.3.5.2-1.el7.noarch ovirt-imageio-daemon-1.5.1-0.el7.noarch ovirt-vmconsole-host-1.0.7-2.el7.noarch ovirt-hosted-engine-setup-2.3.11-1.el7.noarch ovirt-ansible-hosted-engine-setup-1.0.26-1.el7.noarch python2-ovirt-host-deploy-1.8.0-1.el7.noarch ovirt-ansible-engine-setup-1.1.9-1.el7.noarch python2-ovirt-setup-lib-1.2.0-1.el7.noarch cockpit-machines-ovirt-195.1-1.el7.noarch ovirt-hosted-engine-ha-2.3.3-1.el7.noarch ovirt-vmconsole-1.0.7-2.el7.noarch cockpit-ovirt-dashboard-0.13.5-1.el7.noarch ovirt-provider-ovn-driver-1.2.22-1.el7.noarch ovirt-host-deploy-common-1.8.0-1.el7.noarch ovirt-host-4.3.4-1.el7.x86_64 python-ovirt-engine-sdk4-4.3.2-2.el7.x86_64 ovirt-host-dependencies-4.3.4-1.el7.x86_64 ovirt-ansible-repositories-1.1.5-1.el7.noarch [root@swm-02 ~]# cat /etc/redhat-release CentOS Linux release 7.6.1810 (Core) [root@swm-02 ~]# uname -r 3.10.0-957.27.2.el7.x86_64 You have new mail in /var/spool/mail/root [root@swm-02 ~]# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever 2: em1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master test state UP group default qlen 1000 link/ether d4:ae:52:8d:50:48 brd ff:ff:ff:ff:ff:ff 3: em2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether d4:ae:52:8d:50:49 brd ff:ff:ff:ff:ff:ff 4: p1p1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master ovirtmgmt state UP group default qlen 1000 link/ether 90:e2:ba:1e:14:80 brd ff:ff:ff:ff:ff:ff 5: p1p2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 90:e2:ba:1e:14:81 brd ff:ff:ff:ff:ff:ff 6: ovs-system: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a2:b8:d6:e8:b3:d8 brd ff:ff:ff:ff:ff:ff 7: br-int: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 96:a0:c1:4a:45:4b brd ff:ff:ff:ff:ff:ff 25: test: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether d4:ae:52:8d:50:48 brd ff:ff:ff:ff:ff:ff inet 10.15.11.21/24 brd 10.15.11.255 scope global test valid_lft forever preferred_lft forever 26: ovirtmgmt: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether 90:e2:ba:1e:14:80 brd ff:ff:ff:ff:ff:ff inet 10.15.28.31/24 brd 10.15.28.255 scope global ovirtmgmt valid_lft forever preferred_lft forever 27: ;vdsmdummy;: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 62:e5:e5:07:99:eb brd ff:ff:ff:ff:ff:ff 29: vnet0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq master ovirtmgmt state UNKNOWN group default qlen 1000 link/ether fe:6f:9c:95:00:02 brd ff:ff:ff:ff:ff:ff [root@swm-02 ~]# free -m total used free shared buff/cache available Mem: 64413 1873 61804 9 735 62062 Swap: 16383 0 16383 [root@swm-02 ~]# free -h total used free shared buff/cache available Mem: 62G 1.8G 60G 9.5M 735M 60G Swap: 15G 0B 15G [root@swm-02 ~]# ls ls lsb_release lshw lslocks lsmod lspci lssubsys lsusb.py lsattr lscgroup lsinitrd lslogins lsns lss16toppm lstopo-no-graphics lsblk lscpu lsipc lsmem lsof lsscsi lsusb [root@swm-02 ~]# lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 16 On-line CPU(s) list: 0-15 Thread(s) per core: 2 Core(s) per socket: 4 Socket(s): 2 NUMA node(s): 2 Vendor ID: GenuineIntel CPU family: 6 Model: 44 Model name: Intel(R) Xeon(R) CPU X5672 @ 3.20GHz Stepping: 2 CPU MHz: 3192.064 BogoMIPS: 6384.12 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 256K L3 cache: 12288K NUMA node0 CPU(s): 0,2,4,6,8,10,12,14 NUMA node1 CPU(s): 1,3,5,7,9,11,13,15 Flags: 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 pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid dca sse4_1 sse4_2 popcnt aes lahf_lm ssbd ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid dtherm ida arat spec_ctrl intel_stibp flush_l1d [root@swm-02 ~]#

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Migration from bare metal engine to hosted doesn't seem to work at all in 4.3.2
by Clinton Goudie-Nice 24 Aug '19

24 Aug '19

Hi all, I'm trying to migrate from an ovirt bare metal instance to the hosted appliance. The instructions here: https://www.ovirt.org/documentation/self-hosted/chap-Migrating_from_Bare_Me… are at best murky, and at worst quite wrong, and I'm looking for some help. The instructions say "You must answer No to the following question so that you can restore the BareMetal-Engine backup file on HostedEngine-VM before running engine-setup. Automatically execute engine-setup on the engine appliance on first boot (Yes, No)[Yes]? No" Makes complete sense, except this question is not asked at all. Some research on the internet says we should be able to do this via append-answers: [environment:default] OVEHOSTED_VM/cloudinitExecuteEngineSetup=bool:False Except this doesn't work either. When the appliance deploys the engine is setup and already running. How do I take a backup file, and a backup log, and deploy them into a hosted engine? Clint

1 0

Creating hosts via the REST API using SSH Public Key authentication
by schill-julian＠gmx.de 23 Aug '19

23 Aug '19

In the UI one can create hosts using two authentication methods: 'Password' and 'SSH Public Key'. I have only found the Password authentication in the API Docs (/ovirt-engine/apidoc/#/services/hosts/methods/add). My question is: How can i create hosts using SSH Public Key authentication via the REST API? I would appreciate an example POST request!

3 2

nodectl on plain CentOS hypervisors
by Gianluca Cecchi 23 Aug '19

23 Aug '19

Does it make sense to install nodectl utility on plain CentOS 7.x nodes? Or any other alternative for plain OS nodes vs ovirt-node-ng ones? On my updated CentOS 7.6 oVirt node I have not the command; I think it is provided by the package ovirt-node-ng-nodectl, that is one of the available ones if I run "yum search" on the system. Thanks Gianluca

2 2

oVirt 3.6: Node went into Error state while migrations happening
by Christopher Cox 23 Aug '19

23 Aug '19

On the node in question, the metadata isn't coming across (state) wise. It shows VMs being in an unknown state (some are up and some are down), some show as migrating and there are 9 forever hung migrating tasks. We tried to bring up some of the down VMs that had a state of Down, but that ended up getting them the state of "Wait for Lauch", though those VMs are actually started. Right now, my plan is attempt a restart of vdsmd on the node in question. Just trying to get the node to a working state again. There a total of 9 nodes in our cluster, but we can't manage any VMs on the affected node right now. Is there a way in 3.6 to cancel the hung tasks? I'm worried that if vdsmd is restarted on the node, the tasks might be "attempted"... I really need them to be forgotten if possible. Ideally want all "Unknown" to return to either an "up" or "down" state (depending if the VM is up or down) and for "Wait for Launch" for those, to go to "up" and for all the "Migrating" to go to "up" or "down" (I think only one is actually down). I'm concerned that any attempt manually maniplate the state in the ovirt mgmt head db will be moot because the node will be queried for state and that state will be taken and override anything I attempt to do. Thoughts??

2 1

When I create a new domain in storage , it report : VDSM command ActivateStorageDomainVDS failed: Unknown pool id, pool not connected: (u'b87012a1-8f7a-4af5-8884-e0fb8002e842', )
by wangyu13476969128＠126.com 23 Aug '19

23 Aug '19

The version of ovirt-engine is 4.2.8 The version of ovirt-node is 4.2.8 When I create a new domain in storage , the storage type is NFS , it report : VDSM command ActivateStorageDomainVDS failed: Unknown pool id, pool not connected: (u'b87012a1-8f7a-4af5-8884-e0fb8002e842',) The error of vdsm.log is : 2019-08-23 11:02:14,740+0800 INFO (jsonrpc/4) [vdsm.api] START connectStorageServer(domType=1, spUUID=u'00000000-0000-0000-0000-000000000000', conList=[{u'id': u'c6893a09-ab28-4328-b186-d2f88f2320d4', u'connection': u'172.16.10.74:/ovirt-data', u'iqn': u'', u'user': u'', u'tpgt': u'1', u'protocol_version': u'auto', u'password': '********', u'port': u''}], options=None) from=::ffff:172.16.90.10,52962, flow_id=5d720a32, task_id=2af924ff-37a6-46a1-b79f-4251d21d5ff9 (api:46) 2019-08-23 11:02:14,743+0800 INFO (jsonrpc/4) [vdsm.api] FINISH connectStorageServer return={'statuslist': [{'status': 0, 'id': u'c6893a09-ab28-4328-b186-d2f88f2320d4'}]} from=::ffff:172.16.90.10,52962, flow_id=5d720a32, task_id=2af924ff-37a6-46a1-b79f-4251d21d5ff9 (api:52) 2019-08-23 11:02:14,743+0800 INFO (jsonrpc/4) [jsonrpc.JsonRpcServer] RPC call StoragePool.connectStorageServer succeeded in 0.00 seconds (__init__:573) 2019-08-23 11:02:14,751+0800 INFO (jsonrpc/6) [vdsm.api] START activateStorageDomain(sdUUID=u'3bcdc32c-040e-4a4c-90fb-de950f54f1b4', spUUID=u'b87012a1-8f7a-4af5-8884-e0fb8002e842', options=None) from=::ffff:172.16.90.10,53080, flow_id=709ee722, task_id=9b8f32af-5fdd-4ffa-9520-c474af03db70 (api:46) 2019-08-23 11:02:14,752+0800 INFO (jsonrpc/6) [vdsm.api] FINISH activateStorageDomain error=Unknown pool id, pool not connected: (u'b87012a1-8f7a-4af5-8884-e0fb8002e842',) from=::ffff:172.16.90.10,53080, flow_id=709ee722, task_id=9b8f32af-5fdd-4ffa-9520-c474af03db70 (api:50) 2019-08-23 11:02:14,752+0800 ERROR (jsonrpc/6) [storage.TaskManager.Task] (Task='9b8f32af-5fdd-4ffa-9520-c474af03db70') Unexpected error (task:875) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, in _run return fn(*args, **kargs) File "<string>", line 2, in activateStorageDomain File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in method ret = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 1262, in activateStorageDomain pool = self.getPool(spUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 350, in getPool raise se.StoragePoolUnknown(spUUID) StoragePoolUnknown: Unknown pool id, pool not connected: (u'b87012a1-8f7a-4af5-8884-e0fb8002e842',) 2019-08-23 11:02:14,752+0800 INFO (jsonrpc/6) [storage.TaskManager.Task] (Task='9b8f32af-5fdd-4ffa-9520-c474af03db70') aborting: Task is aborted: "Unknown pool id, pool not connected: (u'b87012a1-8f7a-4af5-8884-e0fb8002e842',)" - code 309 (task:1181) 2019-08-23 11:02:14,752+0800 ERROR (jsonrpc/6) [storage.Dispatcher] FINISH activateStorageDomain error=Unknown pool id, pool not connected: (u'b87012a1-8f7a-4af5-8884-e0fb8002e842',) (dispatcher:82) How can I solve this problem ?

2 1

large size OVA import fails
by jason.l.cox＠l3harris.com 22 Aug '19

22 Aug '19

I have a fairly large OVA (~200GB) that was exported from oVirt4.3.5. I'm trying to import it into a new cluster, also oVirt4.3.5. The import starts fine but fails again and again. Everything I can find online appears to be outdated, mentioning incorrect log file locations and saying virt-v2v does the import. On the engine in /var/log/ovirt-engine/engine.log I can see where it is doing the CreateImageVDSCommand, then a few outputs concerning adding the disk, which end with USER_ADD_DISK_TO_VM_FINISHED_SUCCESS, then the ansible command: 2019-08-20 15:40:38,653-04 Executing Ansible command: /usr/bin/ansible-playbook --ssh-common-args=-F /var/lib/ovirt-engine/.ssh/config -v --private-key=/etc/pki/ovirt-engine/keys/engine_id_rsa --inventory=/tmp/ansible-inventory8416464991088315694 --extra-vars=ovirt_import_ova_path="/mnt/vm_backups/myvm.ova" --extra-vars=ovirt_import_ova_disks="['/rhev/data-center/mnt/glusterSD/myhost.mydomain.com:_vmstore/59502c8b-fd1e-482b-bff7-39c699c196b3/images/886a3313-19a9-435d-aeac-64c2d507bb54/465ce2ba-8883-4378-bae7-e231047ea09d']" --extra-vars=ovirt_import_ova_image_mappings="{}" /usr/share/ovirt-engine/playbooks/ovirt-ova-import.yml [Logfile: /var/log/ovirt-engine/ova/ovirt-import-ova-ansible-20190820154038-myhost.mydomain.com-25f6ac6f-9bdc-4301-b896-d357712dbf01.log] Then nothing about the import until: 2019-08-20 16:11:08,859-04 INFO [org.ovirt.engine.core.bll.exportimport.ImportVmFromOvaCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-88) [3321d4f6] Lock freed to object 'EngineLock:{exclusiveLocks='[myvm=VM_NAME, 464a25ba-8f0a-421d-a6ab-13eff67b4c96=VM]', sharedLocks=''}' 2019-08-20 16:11:08,894-04 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engineScheduled-Thread-88) [3321d4f6] EVENT_ID: IMPORTEXPORT_IMPORT_VM_FAILED(1,153), Failed to import Vm myvm to Data Center Default, Cluster Default I've found the import logs on the engine, in /var/log/ovirt-engine/ova, but the ovirt-import-ova-ansible*.logs for the imports of concern only contain: 2019-08-20 19:59:48,799 p=44701 u=ovirt | Using /usr/share/ovirt-engine/playbooks/ansible.cfg as config file 2019-08-20 19:59:49,271 p=44701 u=ovirt | PLAY [all] ********************************************************************* 2019-08-20 19:59:49,280 p=44701 u=ovirt | TASK [ovirt-ova-extract : Run extraction script] ******************************* Watching the host selected for the import, I can see the qemu-img convert process running, but then the engine frees the lock on the VM and reports the import as having failed. However, the qemu-img process continues to run on the host. I don't know where else to look to try and find out what's going on and I cannot see anything that says why the import failed. Since the qemu-img process on the host is still running after the engine log shows the lock has been freed and import failed, I'm guessing what's happening is on the engine side. Looking at the time between the start of the ansible command and when the lock is freed it is consistently around 30 minutes. # first try 2019-08-20 15:40:38,653-04 ansible command start 2019-08-20 16:11:08,859-04 lock freed 31 minutes # second try 2019-08-20 19:59:48,463-04 ansible command start 2019-08-20 20:30:21,697-04 lock freed 30 minutes, 33 seconds # third try 2019-08-21 09:16:42,706-04 ansible command start 2019-08-21 09:46:47,103-04 lock freed 30 minutes, 45 seconds With that in mind, I took a look at the available configuration keys from engine-config --list. After getting each the only one set to ~30 minutes and looks like it could be the problem was SSHInactivityHardTimeoutSeconds (set to 1800 seconds). I set it to 3600 and tried the import again, but it still failed at ~30 minutes, so that's apparently not the correct key. Also, just FYI, I also tried to import the ova using virt-v2v, but that fails immediately: virt-v2v: error: expecting XML expression to return an integer (expression: rasd:Parent/text(), matching string: 00000000-0000-0000-0000-000000000000) If reporting bugs, run virt-v2v with debugging enabled and include the complete output: virt-v2v -v -x [...] Does virt-v2v not support OVAs created by the oVirt 'export to ova' option? So my main question is, Is there a timeout for VM imports through the engine web UI? And if so, is if configurable? Thanks in advance.

2 1

ovn networking
by Staniforth, Paul 22 Aug '19

22 Aug '19

Hello I the latest release of the engine 4.3.5.5-1.el7 ovn-nbctl show ovn-sbctl show both seem to work but produce the errors net_mlx5: cannot load glue library: libibverbs.so.1: cannot open shared object file: No such file or directory net_mlx5: cannot initialize PMD due to missing run-time dependency on rdma-core libraries (libibverbs, libmlx5) PMD: net_mlx4: cannot load glue library: libibverbs.so.1: cannot open shared object file: No such file or directory PMD: net_mlx4: cannot initialize PMD due to missing run-time dependency on rdma-core libraries (libibverbs, libmlx4) should libibverbs be a dependency? Paul S. To view the terms under which this email is distributed, please go to:- http://leedsbeckett.ac.uk/disclaimer/email/

3 5

VM won't migrate back to original node
by Alexander Schichow 22 Aug '19

22 Aug '19

I set up a high available VM which is using a shareable LUN. When migrating said VM from the original Node everything is fine. When I try to migrate it back, I get an error. If I suspend or shutdown the VM, it returns to the original host. Then it repeats. I'm really out of ideas so maybe any of you happen to have any? I would really appreciate that. Thanks

2 1

Custum driver in oVirt node image?
by thomas＠hoberg.net 22 Aug '19

22 Aug '19

Using 3 Mini-ITX Atoms J5005 boards to build a three node HC test environment (actually there is a fourth to simulate a remote DC) These boards have a RealTek 8169 Gbit controller, which for hardware/firmware or driver reasons comes up just fine on cold boots, but struggles on warm-boots or whenever the interface is re-configured, as is the case when the OVS overlay is configured, ... * unless link-speed autonegotiation is enabled after which it works just fine. So for a normal system, I can just put a proper ETHTOOL_OPTS="autoneg on" into /etc/sysconfig/network-scrkipts/ifcfg-<device-name> to avoid trouble on warm boots, but once the overlay network is put on top, the network manager no longer controls the device and the standard "ignore" setting of driver/hardware evidently causes the link to fail: dmesg reports the interface toggling and ovs isn't happy either. The Ethernet switch is unmanaged, so there is nothing I can do there to speed up or eliminate negotiations, and I currently see three options: 1. Find/be told where to renable Ethernet link speed autonegotiation with the OVS/VDSM/?? so the RTL8169 is happy again 2. Use a known USB3 GBit NIC (no space in the chassis to put e.g. an Intel NIC) 3. Make an USB3 2.5Gbit NIC based on RealTek's 8156 work, but currently that requires compiling from source and loading it at boot Option 3 works just fine with a CentOS base, but I got tons of problem making oVirt hosted engine work with that. Option 3 for the oVirt node image seems to class with the read-only nature of the oVirt node imge: While I can load a pre-compile driver interactively, I can't make it stick with dracut -f. I haven't immediately found a way to patch/fix/build derivative oVirt node images with that driver included and am somewhat to impatient to wait until it's mainstream, so any help would be appreciated. I've verified option 2 with a single USB3 GBit adapter natively supported by the kernel that I already had available, but I then opted to jump the gun and buy the slightly more expensive 2.5GBit variant as a better match to a Gluster environment: A mistake in this context as it turned out.

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[ANN] oVirt 4.3.6 Third Release Candidate is now available for testing
by Sandro Bonazzola 22 Aug '19

22 Aug '19

The oVirt Project is pleased to announce the availability of the oVirt 4.3.6 Third Release Candidate for testing, as of August 22nd, 2019. This update is a release candidate of the sixth in a series of stabilization updates to the 4.3 series. This is pre-release software. This pre-release should not to be used in production. This release is available now on x86_64 architecture for: * Red Hat Enterprise Linux 7.7 or later (but <8) * CentOS Linux (or similar) 7.7 or later (but <8) This release supports Hypervisor Hosts on x86_64 and ppc64le architectures for: * Red Hat Enterprise Linux 7.7 or later (but <8) * CentOS Linux (or similar) 7.7 or later (but <8) * oVirt Node 4.3 (available for x86_64 only) will be made available when CentOS 7.7 will be released. See the release notes [1] for known issues, new features and bugs fixed. Notes: - oVirt Appliance is already available - oVirt Node is not yet available, pending CentOS 7.7 release to be available Additional Resources: * Read more about the oVirt 4.3.6 release highlights: http://www.ovirt.org/release/4.3.6/ * Get more oVirt Project updates on Twitter: https://twitter.com/ovirt * Check out the latest project news on the oVirt blog: http://www.ovirt.org/blog/ [1] http://www.ovirt.org/release/4.3.6/ -- Sandro Bonazzola MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV Red Hat EMEA <https://www.redhat.com/> sbonazzo(a)redhat.com <https://www.redhat.com/>*Red Hat respects your work life balance. Therefore there is no need to answer this email out of your office hours.*

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Re: Where to configure iscsi initiator name?
by Gianluca Cecchi 22 Aug '19

22 Aug '19

On Wed, Aug 21, 2019 at 7:07 PM Dan Poltawski <dan.poltawski(a)tnp.net.uk> wrote: > When I added the first node a 'random' initiator name was generated of > form: > > # cat /etc/iscsi/initiatorname.iscsi > InitiatorName=iqn.1994-05.com.redhat:[RANDOM] > > Having attempted to add another node, this node has another initiator name > generated and can't access the storage. Is there a way to configure this > initiator name to a static value which will be configured when new nodes > get added to the cluster? Or is there some reason for this i'm missing? > > thanks, > > Dan > oVirt nodes are iSCSI clients and each node needs to have a different InitiatorName value. Eventually you can modify initiatorname of a node before running discovery against oVirt and rebooting it (or restarting iscsi services). You can edit the file or use the iscsi-iname command. It must be named with an iqn name in the format of iqn.YYYY-MM.reverse.domain.name:OptionalIdentifier Typically you configure your iSCSI storage array giving access to the lun to be used as a storage domain to all oVirt hosts initiators. Or you can use chap authentication or both Se also here: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/7/ht… https://www.certdepot.net/rhel7-configure-iscsi-target-initiator-persistent… HIH, Gianluca

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Data Center Contending/Non responsive - No SPM
by Matthew B 21 Aug '19

21 Aug '19

Hello, I'm having a problem with oVirt - we're running 4.3 on CentOS 7: [root@ovirt ~]# rpm -q ovirt-engine; uname -r ovirt-engine-4.3.4.3-1.el7.noarch 3.10.0-957.21.2.el7.x86_64 Currently the Data Center alternates between Non responsive and contending status, and SPM selection fails. The error in the events tab is: VDSM compute5.domain command HSMGetTaskStatusVDS failed: Volume does not exist: (u'2bffb8d0-dfb5-4b08-9c6b-716e11f280c2',) Full error: 2019-08-21 13:53:53,507-0700 ERROR (tasks/8) [storage.TaskManager.Task] (Task='3076bb8c-7462-4573-a832-337da478ae0e') Unexpected error (task:875) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, in _run return fn(*args, **kargs) File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 336, in run return self.cmd(*self.argslist, **self.argsdict) File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 333, in startSpm self._upgradePool(expectedDomVersion, __securityOverride=True) File "/usr/lib/python2.7/site-packages/vdsm/storage/securable.py", line 79, in wrapper return method(self, *args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 484, in _upgradePool str(targetDomVersion)) File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 1108, in _convertDomain targetFormat) File "/usr/lib/python2.7/site-packages/vdsm/storage/formatconverter.py", line 447, in convert converter(repoPath, hostId, imageRepo, isMsd) File "/usr/lib/python2.7/site-packages/vdsm/storage/formatconverter.py", line 405, in v5DomainConverter domain.convert_volumes_metadata(target_version) File "/usr/lib/python2.7/site-packages/vdsm/storage/fileSD.py", line 813, in convert_volumes_metadata for vol in self.iter_volumes(): File "/usr/lib/python2.7/site-packages/vdsm/storage/sd.py", line 764, in iter_volumes yield self.produceVolume(img_id, vol_id) File "/usr/lib/python2.7/site-packages/vdsm/storage/sd.py", line 846, in produceVolume volUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/glusterVolume.py", line 45, in __init__ volUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/volume.py", line 817, in __init__ self._manifest = self.manifestClass(repoPath, sdUUID, imgUUID, volUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/fileVolume.py", line 71, in __init__ volUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/volume.py", line 86, in __init__ self.validate() File "/usr/lib/python2.7/site-packages/vdsm/storage/volume.py", line 112, in validate self.validateVolumePath() File "/usr/lib/python2.7/site-packages/vdsm/storage/fileVolume.py", line 131, in validateVolumePath raise se.VolumeDoesNotExist(self.volUUID) VolumeDoesNotExist: Volume does not exist: (u'2bffb8d0-dfb5-4b08-9c6b-716e11f280c2',) Most of our VMs are still running, but we can't start or restart any VMs. All of the domains show as down since SPM selection fails. Any thoughts? Thanks, -Matthew

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Re: Where to configure iscsi initiator name?
by Vincent Royer 21 Aug '19

21 Aug '19

You have to add all the initiators for each node to the iscsi LUN. At least thats how I got it working. Then I think it's recommended to setup multipath. However take this with a grain because iscsi did not work well for me. On Wed, Aug 21, 2019, 10:08 AM Dan Poltawski <dan.poltawski(a)tnp.net.uk> wrote: > When I added the first node a 'random' initiator name was generated of > form: > > # cat /etc/iscsi/initiatorname.iscsi > InitiatorName=iqn.1994-05.com.redhat:[RANDOM] > > Having attempted to add another node, this node has another initiator name > generated and can't access the storage. Is there a way to configure this > initiator name to a static value which will be configured when new nodes > get added to the cluster? Or is there some reason for this i'm missing? > > thanks, > > Dan > ------------------------------ > > The Networking People (TNP) Limited. Registered office: Network House, > Caton Rd, Lancaster, LA1 3PE. Registered in England & Wales with company > number: 07667393 > > This email and any files transmitted with it are confidential and intended > solely for the use of the individual or entity to whom they are addressed. > If you have received this email in error please notify the system manager. > This message contains confidential information and is intended only for the > individual named. If you are not the named addressee you should not > disseminate, distribute or copy this e-mail. Please notify the sender > immediately by e-mail if you have received this e-mail by mistake and > delete this e-mail from your system. If you are not the intended recipient > you are notified that disclosing, copying, distributing or taking any > action in reliance on the contents of this information is strictly > prohibited. > _______________________________________________ > Users mailing list -- users(a)ovirt.org > To unsubscribe send an email to users-leave(a)ovirt.org > Privacy Statement: https://www.ovirt.org/site/privacy-policy/ > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/users@ovirt.org/message/UKNN77NZJ4ZTB… >

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hosted engine setup, iSCSI no LUNs shown
by billyburly＠gmail.com 21 Aug '19

21 Aug '19

I'm trying to setup the hosted engine on top of iSCSI storage. It successfully logs in and gets the target, however the process errors out claiming there are no LUNs. But if you look on the host, the disks were added to the system. [ INFO ] TASK [ovirt.hosted_engine_setup : iSCSI discover with REST API] [ INFO ] ok: [localhost] The following targets have been found: [1] iqn.2001-04.com.billdurr.durrnet.vm-int:vmdata TPGT: 1, portals: 192.168.47.10:3260 Please select a target (1) [1]: 1 [ INFO ] Getting iSCSI LUNs list ... [ INFO ] TASK [ovirt.hosted_engine_setup : Get iSCSI LUNs] [ INFO ] ok: [localhost] [ ERROR ] Cannot find any LUN on the selected target [ ERROR ] Unable to get target list Here's what the config in targetcli looks like [root@vm1 ~]# targetcli ls o- / ..................................................................... [...] o- backstores .......................................................... [...] | o- block .............................................. [Storage Objects: 2] | | o- p_iscsi_lun1 .............. [/dev/drbd0 (62.0GiB) write-thru activated] | | | o- alua ............................................... [ALUA Groups: 1] | | | o- default_tg_pt_gp ................... [ALUA state: Active/optimized] | | o- p_iscsi_lun2 ............. [/dev/drbd1 (310.6GiB) write-thru activated] | | o- alua ............................................... [ALUA Groups: 1] | | o- default_tg_pt_gp ................... [ALUA state: Active/optimized] | o- fileio ............................................. [Storage Objects: 0] | o- pscsi .............................................. [Storage Objects: 0] | o- ramdisk ............................................ [Storage Objects: 0] o- iscsi ........................................................ [Targets: 1] | o- iqn.2001-04.com.billdurr.durrnet.vm-int:vmdata ................ [TPGs: 1] | o- tpg1 .............................................. [gen-acls, no-auth] | o- acls ...................................................... [ACLs: 0] | o- luns ...................................................... [LUNs: 2] | | o- lun0 ......... [block/p_iscsi_lun1 (/dev/drbd0) (default_tg_pt_gp)] | | o- lun1 ......... [block/p_iscsi_lun2 (/dev/drbd1) (default_tg_pt_gp)] | o- portals ................................................ [Portals: 1] | o- 192.168.47.10:3260 ........................................... [OK] o- loopback ..................................................... [Targets: 0] o- srpt ......................................................... [Targets: 0] The two LUNs show up on the host after the hosted engine setup tries to enumerate the LUNs for the target [root@vm1 ~]# lsscsi [0:0:0:0] storage HP P420i 8.32 - [0:1:0:0] disk HP LOGICAL VOLUME 8.32 /dev/sda [0:1:0:1] disk HP LOGICAL VOLUME 8.32 /dev/sdb [0:1:0:2] disk HP LOGICAL VOLUME 8.32 /dev/sdc [11:0:0:0] disk LIO-ORG p_iscsi_lun1 4.0 /dev/sdd [11:0:0:1] disk LIO-ORG p_iscsi_lun2 4.0 /dev/sde

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Reaction and timeouts to APD (All Paths Down)
by Gianluca Cecchi 21 Aug '19

21 Aug '19

Hello, similar questions/arguments took already place in the past, but I think it could be a good point to dig more if possible. I focus on block based storage and my environments have iSCSI based with multipath, connected to Equallogic. Currently I have set no_path_retry to 4, so I have a 20 seconds timeout (polling_interval=5). Sometimes some network planned activity (not under my domain) that should have no impact "doesn't go so well" and I could have longer delays (also 60-70 seconds) and so oVirt reactions where I see soft fencing, VMs going into paused state or "question mark" state... Comparing to vSphere, the same events don't apparently cause anything (and I see same lost paths events in datastore and ESXi host monitoring--> Events pane). This basically depends on APD default timeout that seems to be 140 seconds. This difference of behavior has the effect of showing an apparent better SLA of vSphere during these short time outages and a sort of show stopper for extending oVirt implementation.... Interesting vSphere KBs here: Storage device has entered the All Paths Down state (2032934) https://kb.vmware.com/s/article/2032934 Containing: "Note: By default, the APD timeout is set to 140 seconds." All Paths Down timeout for a storage device has expired (2032940) https://kb.vmware.com/s/article/2032940 Path redundancy to the storage device is degraded (1009555) https://kb.vmware.com/s/article/1009555 Storage device has recovered from the APD state (2032945) https://kb.vmware.com/s/article/2032945 So the question is what kind of real risks I have if I simulate that behavior and set a no_path_retry value so that polling_interval x no_path_retry = 140 (in default config of polling_interval=5 it would mean no_path_retry = 28) BTW: I also have an environment based on RHV 4.3.5 and iSCSI and in parallel I opened a case (02452597) for asking clarifications/chances remaining in supported configuration, so for logs and so on it could help going into it for Red Hat developers Thanks, Gianluca

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Where to configure iscsi initiator name?
by Dan Poltawski 21 Aug '19

21 Aug '19

When I added the first node a 'random' initiator name was generated of form: # cat /etc/iscsi/initiatorname.iscsi InitiatorName=iqn.1994-05.com.redhat:[RANDOM] Having attempted to add another node, this node has another initiator name generated and can't access the storage. Is there a way to configure this initiator name to a static value which will be configured when new nodes get added to the cluster? Or is there some reason for this i'm missing? thanks, Dan ________________________________ The Networking People (TNP) Limited. Registered office: Network House, Caton Rd, Lancaster, LA1 3PE. Registered in England & Wales with company number: 07667393 This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.

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engine-setup is failing in fedora30
by Gobinda Das 21 Aug '19

21 Aug '19

Hi, I am facing issue to do engine-setup in fedora30. [godas@godas ovirt-engine]$ $HOME/ovirt-engine/bin/engine-setup [ INFO ] Stage: Initializing Setup was run under unprivileged user this will produce development installation do you wish to proceed? (Yes, No) [No]: Yes [ INFO ] Stage: Environment setup Configuration files: ['/home/gobinda/ovirt-engine/etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf'] Log file: /home/gobinda/ovirt-engine/var/log/ovirt-engine/setup/ovirt-engine-setup-20190821121001-bkc6we.log Version: otopi-1.8.1_master (otopi-1.8.1-0.0.master.20190228094531.git1953bdc.fc30) [ INFO ] Stage: Environment packages setup [ INFO ] Stage: Programs detection [ INFO ] Stage: Environment setup (late) [ INFO ] Stage: Environment customization --== PRODUCT OPTIONS ==-- --== PACKAGES ==-- --== NETWORK CONFIGURATION ==-- [WARNING] Failed to resolve godas.lab.eng.blr.redhat.com using DNS, it can be resolved only locally --== DATABASE CONFIGURATION ==-- --== OVIRT ENGINE CONFIGURATION ==-- Perform full vacuum on the engine database engine@localhost? This operation may take a while depending on this setup health and the configuration of the db vacuum process. See https://www.postgresql.org/docs/10/sql-vacuum.html (Yes, No) [No]: --== STORAGE CONFIGURATION ==-- --== PKI CONFIGURATION ==-- --== APACHE CONFIGURATION ==-- --== SYSTEM CONFIGURATION ==-- --== MISC CONFIGURATION ==-- --== END OF CONFIGURATION ==-- [ INFO ] Stage: Setup validation --== CONFIGURATION PREVIEW ==-- Default SAN wipe after delete : False Host FQDN : godas.lab.eng.blr.redhat.com Set up Cinderlib integration : False Engine database host : localhost Engine database port : 5432 Engine database secured connection : False Engine database host name validation : False Engine database name : engine Engine database user name : engine Engine installation : True PKI organization : lab.eng.blr.redhat.com Set up ovirt-provider-ovn : False Configure WebSocket Proxy : True Configure VMConsole Proxy : True Please confirm installation settings (OK, Cancel) [OK]: OK [ INFO ] Checking the Engine database consistency [ INFO ] Stage: Transaction setup [ INFO ] Stage: Misc configuration (early) [ INFO ] Stage: Package installation [ INFO ] Stage: Misc configuration [ INFO ] Upgrading CA [ INFO ] Configuring WebSocket Proxy [ INFO ] Backing up database localhost:engine to '/home/gobinda/ovirt-engine/var/lib/ovirt-engine/backups/engine-20190821121010.0iip56rw.dump'. [ INFO ] Creating/refreshing Engine database schema Unregistering existing client registration info. [ INFO ] Generating post install configuration file '/home/gobinda/ovirt-engine/etc/ovirt-engine-setup.conf.d/20-setup-ovirt-post.conf' [ ERROR ] Failed to execute stage 'Misc configuration': a bytes-like object is required, not 'str' [ INFO ] Rolling back database schema [ INFO ] Clearing Engine database engine [ INFO ] Restoring Engine database engine [ INFO ] Restoring file '/home/gobinda/ovirt-engine/var/lib/ovirt-engine/backups/engine-20190821121010.0iip56rw.dump' to database localhost:engine. [ ERROR ] Engine database rollback failed: cannot use a string pattern on a bytes-like object [ INFO ] Stage: Clean up Log file is located at /home/gobinda/ovirt-engine/var/log/ovirt-engine/setup/ovirt-engine-setup-20190821121001-bkc6we.log [ INFO ] Generating answer file '/home/gobinda/ovirt-engine/var/lib/ovirt-engine/setup/answers/20190821121039-setup.conf' [ INFO ] Stage: Pre-termination [ INFO ] Stage: Termination [ ERROR ] Execution of setup failed I*t was working before but the moment i pulled latest master code the issue started.* -- Thanks, Gobinda

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When I added the ovirt-node to the ovirt-engine through the web management interface, I get the following error: Host 172.16.41.100 installation failed. Failed to configure management network on the host. Host 172.16.41.100 does not comply with the cluster cluster-kvm networks, the following networks are missing on host: 'ovirtmgmt'
by wangyu13476969128＠126.com 21 Aug '19

21 Aug '19

When I added the ovirt-node to the ovirt-engine through the web management interface, I get the following error: Host 172.16.41.100 installation failed. Failed to configure management network on the host. Host 172.16.41.100 does not comply with the cluster cluster-kvm networks, the following networks are missing on host: 'ovirtmgmt' How can I solve this problem ?

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VDSM ovirt-node-2 command Get Host Capabilities failed: Internal JSON-RPC error: {'reason': "invalid argument: KVM is not supported by '/usr/libexec/qemu-kvm' on this host"}
by wangyu13476969128＠126.com 21 Aug '19

21 Aug '19

The version of ovirt-engine is 4.3.5.5-1.el7 The version of ovirt-node-2 is 4.3.5.2-1.el7 When I add ovirt-node-2 to ovirt-engine ，it report: VDSM ovirt-node-2 command Get Host Capabilities failed: Internal JSON-RPC error: {'reason': "invalid argument: KVM is not supported by '/usr/libexec/qemu-kvm' on this host"} What 's the root cause of this problem ? How can I solve this problem ?

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Hyperconverged setup ovirt 4.3.x using ansible?
by adrianquintero＠gmail.com 20 Aug '19

20 Aug '19

Hi, I am trying to do a Hyperconverged setup using ansible. So far I have been able to run a playbook to setup gluster but have not been able to identify how to install the Hosted-Engine VM using ansible and tie all the pieces together. Can someone point me in the right direction to deploy a hyperconverged environment using ansible? I have succesfully deployed ovirt 4.3.5 (Hyperconverged) using the web UI. thanks.

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ovirt node install
by Staniforth, Paul 20 Aug '19

20 Aug '19

Hello, on the latest version of the oVirt-node install running nodectl info gives the error Traceback (most recent call last): File "/usr/lib64/python2.7/runpy.py", line 162, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/usr/lib64/python2.7/runpy.py", line 72, in _run_code exec code in run_globals File "/usr/lib/python2.7/site-packages/nodectl/__main__.py", line 42, in <module> CliApplication() File "/usr/lib/python2.7/site-packages/nodectl/__init__.py", line 200, in CliApplication return cmdmap.command(args) File "/usr/lib/python2.7/site-packages/nodectl/__init__.py", line 118, in command return self.commands[command](**kwargs) File "/usr/lib/python2.7/site-packages/nodectl/__init__.py", line 76, in info Info(self.imgbased, self.machine).write() File "/usr/lib/python2.7/site-packages/nodectl/info.py", line 46, in __init__ self._fetch_information() File "/usr/lib/python2.7/site-packages/nodectl/info.py", line 49, in _fetch_information self._get_bootloader_info() File "/usr/lib/python2.7/site-packages/nodectl/info.py", line 62, in _get_bootloader_info bootinfo["entries"][k] = v.__dict__ AttributeError: 'list' object has no attribute '__dict__' Also what is the correct way to update from ovirt node 4.2 to 4.3? I used yum install https://resources.ovirt.org/pub/ovirt-4.3/rpm/el7/noarch/ovirt-node-ng-imag… I then did yum erase ovirt-release42 and rm /etc/yum.repos.d/ovirt-4.2* Regards, Paul S. To view the terms under which this email is distributed, please go to:- http://leedsbeckett.ac.uk/disclaimer/email/

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numa pinning for high performance
by Vincent Royer 20 Aug '19

20 Aug '19

Is there a good place to learn about cpu pinning and the various settings? I've built a test VM and am trying to understand - I've given it 2 cpus, 4 cores each, 1 thread per core. - The VM is pinned to a specific host with passthrough cpu enabled - numa pinning, first 4 cores on physical socket 1 and the next 4 on physical socket 2 - The host has two sockets each with 20 core cpus I would expect to see a load applied on 8 of the 40 cores on the host during testing. Instead it seems like 32 of 40 cores are working at 100%. What are the effects of this on the performance of the vm? [image: image.png] [image: image.png] [image: image.png] [image: image.png] [image: image.png] [image: image.png]

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