- Users - oVirt List Archives

Removal of dpdk
by Ales Musil 04 Nov '20

04 Nov '20

Hello, we have decided to remove dpdk in the upcoming version of oVirt namely 4.4.4. Let us know if there are any concerns about this. Thank you. Regards, Ales Musil -- Ales Musil Software Engineer - RHV Network Red Hat EMEA <https://www.redhat.com> amusil(a)redhat.com IM: amusil <https://red.ht/sig>

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Requesting for a help in resolving ovirt self hosted engine installation issue
by Jadavalluvar Sethuraman, Hariharan 04 Nov '20

04 Nov '20

Hello, Good Day! I'm Hariharan and I'm working as System Administrator in Linux platform for RWTH Uniklink - Germany. Currently I'm managing the Ovirt environment and I'm very new to this domain. Currently I'm facing an issue with Ovirt self hosted engine installation 4.4 in CentOS 8 server. I have an issue when mounting the glusterfs storage to a target machine. Below is the exact issue what I face; Error: "changed": false, "msg": "Error: the target storage domain contains only 22.0GiB of available space while a minimum of 61.0GiB is required If you wish to use the current target storage domain by extending it, make sure it contains nothing before adding it. Note: (gluster storage was installed and configured in Linux work station with adding additional hard disk in one of the two gluster storage linux work station. I used replicated volumes (replica 2) in creating gluster volumes) Hardware detail: device model: Dell R540 Capacity: 240 GB I tried best possibilities to resolve this issue but still I'm facing the same issue. Could you please help me in resolving this issue with your guidance or support. Hariharan Jadavalluvar Sethuraman Systemadministrator der Brain Imaging Facility (BIF) des interdisziplinären Zentrums für klinische Forschung (IZKF) Universitätsklinikum Aachen (AöR) Pauwelsstraße 30 52074 Aachen Tel: +49 241 80-89150 E-Mail: hjadavalluva(a)ukaachen.de<mailto:rrodriguez@ukaachen.de> ________________________________

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Ovirt 4.4 ilo_ssh version HP ILO3. ERROR: Unable to connect/login to fencing device
by melnyksergii＠gmail.com 04 Nov '20

04 Nov '20

Dears, I have a 3 nodes with HP blade servers G7 and ILO3. ILO3 with the latest firmware 1.93 from Aug 07 2020. I'm try to migrate from Ovirt 4.3 to 4.4 with Centos 8, but I had a problem with setup ssh ilo fence on this nodes. In Ovirt 4.3 with Centos 7 all is works. When I try to Test fence, I see ERROR: Unable to connect/login to fencing device. When I try to use /usr/sbin/fence_ilo_ssh I see the same error. So, I know where is a problem. The problem in an old ssh security keys HostKeyAlgorithms=+ssh-dss. When I add to /root/.ssh/config some exclude for use HostKeyAlgorithms=+ssh-dss I can connect to ilo over ssh from root with: /usr/sbin/fence_ilo_ssh -a 10.0.11.157 -l user -p passwordh -x -u 22 --login-timeout=10 -o status and see: Status: ON But when I try again setup ilo_ssh fence in Ovirt-engine UI I still have the same ERROR: Unable to connect/login to fencing device. How can I solve this problem in Ovirt? Thanks

1 1

HCI with 5 node quest
by simon＠justconnect.ie 03 Nov '20

03 Nov '20

I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and have added 2 additional Compute nodes to this Cluster. What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a glusterfs Replica 3 Volume using nodes 3, 4 & 5? Shimme

3 4

ovirt glusterfs
by garcialiang.anne＠gmail.com 03 Nov '20

03 Nov '20

Hello, I've some problem with Hyperconverged Configure Gluster storage and oVirt hosted engine. I've the message error: failed: [node2.xxxxx.fr] (item={u'key': u'gluster_vg_sdb', u'value': [{u'vgname': u'gluster_vg_sdb', u'pvname': u'/dev/sdb'}]}) => {"ansible_loop_var": "item", "changed": false, "err": " Device /dev/sdb excluded by a filter.\n", "item": {"key": "gluster_vg_sdb", "value": [{"pvname": "/dev/sdb", "vgname": "gluster_vg_sdb"}]}, "msg": "Creating physical volume '/dev/sdb' failed", "rc": 5} Could you help me for know where is the problem, please? Thanks, Anne Garcia

4 3

POWER9 (ppc64le) Support on oVirt 4.4.1
by Vinícius Ferrão 03 Nov '20

03 Nov '20

Hello, I was using oVirt 4.3.10 with IBM AC922 (POWER9 / ppc64le) without any issues. Since I’ve moved to 4.4.1 I can’t add the AC922 machine to the engine anymore, it complains with the following error: The host CPU does not match the Cluster CPU type and is running in degraded mode. It is missing the following CPU flags: model_POWER9, powernv. Any ideia of what’s may be happening? The engine runs on x86_64, and I was using this way on 4.3.10. Machine info: timebase : 512000000 platform : PowerNV model : 8335-GTH machine : PowerNV 8335-GTH firmware : OPAL MMU : Radix Thanks,

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Re: Migrate hosted-engine to new storage domain
by Yedidyah Bar David 03 Nov '20

03 Nov '20

On Tue, Nov 3, 2020 at 7:07 AM Matthew.Stier(a)fujitsu.com <Matthew.Stier(a)fujitsu.com> wrote: > > I’ve migrated my iSCSI storage to a new array, and the only thing remaining is to migrate the hosted-engine. > > > > Any directions on how I should proceed. I understand that I will need to back-up the existing, create a new hosted-engine on the new storage, specifying the backup a reference. > > > > I just would like to see a step-by-step, so I know I am doing everything, and in the right order. Generally speaking, you should follow the hosted-engine backup and restore flows/documents. I strongly suggest to test this first on a test machine before production. You can take a backup without downtime. Restore on some machine (can be a VM, with nested-kvm) that has no access to your production storage and hosts (to make sure the restored engine won't start managing them/competing with the production one). See that all looks good. Then plan production... Good luck and best regards, -- Didi

1 0

Migrate hosted-engine to new storage domain
by Matthew.Stier＠fujitsu.com 03 Nov '20

03 Nov '20

I've migrated my iSCSI storage to a new array, and the only thing remaining is to migrate the hosted-engine. Any directions on how I should proceed. I understand that I will need to back-up the existing, create a new hosted-engine on the new storage, specifying the backup a reference. I just would like to see a step-by-step, so I know I am doing everything, and in the right order.

1 0

Select host for image upload
by C Williams 02 Nov '20

02 Nov '20

Hello, I am having problems selecting the host that I want to use for .iso and other image uploads via the oVirt Web Console. I have 20+ servers of varying speeds. Somehow oVirt keeps wanting to select my oldest and slowest system to use for image uploads. Please Help ! Thank You ! C Williams

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Q: Failed creating snapshot
by Andrei Verovski 02 Nov '20

02 Nov '20

Hi, I have oVirt 4.4 with nodes 4.2.8 Attempt to create snapshot failed with: EventID 10802 VDSM node11 command SnapshotVDS failed: Message timeout can be caused by communication issues. Event ID 2022 Add-disk operation failed to complete. However, snapshot is on disk since VM now takes 1200GB instead of 500. Yes snapshot list in VM details is empty. How to recover disk space occupied by unsuccessful snapshot ? I looked at /vmraid/nfs/disks/xxxx-xxxx-xxx/images and there are no distinctive files which I can identify as snapshot. Thanks in advance. Andrei

2 1

ovirt installation with proxy or katello
by Markus Schaufler 02 Nov '20

02 Nov '20

Hi, in our environment we need to either specify proxy settings or use foreman/katello repositories. I'd like to test both ways but the installer with the ansible scripts behind don't seem to use the hosts settings. Where do I have to adopt the install scripts and will there be in future a GUI option to specify those things? Can't understand why disconnected environments or environments with proxies aren't better taken into consideration...? Thanks in advance, Markus

1 0

Question about OVN MTU
by Strahil Nikolov 02 Nov '20

02 Nov '20

Hello All, I would like to learn more about OVN and especially the maximum MTU that I can use in my environment. Current Setup 4.3.10 Network was created via UI -> MTU Custom -> 8976 -> Create on External Provider -> Connect to Physical Network So my physical connection is MTU 9000 and I have read that Geneve uses 24 bits (maybe that's wrong ?) , thus I have reduced the MTU to 8976. I did some testing on the VMs and ping with payload of '8914' was the maximum I could pass without fragmenting and thus the MTU on the VMs was set to 8942. Did I correctly configure the test network's MTU and am I understanding it correctly that we need extra 34 bits inside the network for encapsulation ? I have checked https://www.ovirt.org/develop/release-management/features/network/managed_m… but I don't see any refference how to calculate the max MTU. Best Regards, Strahil Nikolov

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different rendering chrome and firefox and corruptions in both
by Gianluca Cecchi 01 Nov '20

01 Nov '20

Hello, I'm using Fedora 31 with google-chrome-stable-86.0.4240.111-1.x86_64 firefox-82.0-4.fc31.x86_64 Engine was deployed from a CentOS Linux 8.2 host and then with hosted engine wizard, using the appliance rpm (Package ovirt-engine-appliance.x86_64 4.4-20200916125954.1.el8) Connecting to the same 4.4.2 engine I get: 1) different landing page graphics firefox: https://drive.google.com/file/d/142Ch7qXmmIP9sQQCS1rD75yexX64RmSu/view?usp=… chrome: https://drive.google.com/file/d/1KPvlNk65ltIBhr8GFdVm-GMtfq1Elt7J/view?usp=… 2) corruption in several editing pages in firefox, where a sort of top white part seems to compromise the lower part of the window, making impossible to complete. eg in new network I don't see the lower part related to MTU...: https://drive.google.com/file/d/18aQfDbl_9R9oQsTMwebJSiRZHETkUWIc/view?usp=… 3) in Stotrage --> volumes page if I click on a volume, firefox shows no problem, but chrome gives a gui exception: https://drive.google.com/file/d/1svzQjrGctRMQFvZEpW9zpOlUbv8XXl3Q/view?usp=… Gianluca

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Discard after Delete
by Joris DEDIEU 01 Nov '20

01 Nov '20

Hi list, I forgot to check "Discard after Delete" when creating a new volume. Is there a way (other than to empty the volume) to reclaim free blocks. In https://bugzilla.redhat.com/show_bug.cgi?id=981626 I read about blkdiscard, but as far as I understand it will erase my VMs ... Thanks for your answers Joris

4 4

Training Video or document or training session
by info＠worldhostess.com 01 Nov '20

01 Nov '20

Can someone recommend a training video of some kind of step by step document to do the installation and administration for OVirt? Or if someone that wants to do a one on one online training? I would be super excited to do online training. I have been trying many time to install and I am sure I make some mistakes because I can't get OVirt to work properly. I have done numerous installations during the last few weeks. Yours Sincerely, Henni

4 3

oVirt 4.3.10 RHEL 7.9 support
by KSNull Zero 30 Oct '20

30 Oct '20

Hello! Does oVirt 4.3.10 supports RHEL 7.9 hosts ? Is it safe to update ovirt 4.3.10 hosts to the latest RHEL 7.9 ? Thank you.

4 4

Install test lab single host HCI with plain CentOS as OS
by Gianluca Cecchi 30 Oct '20

30 Oct '20

Hello, if I want to install a test lab environment of type single host HCI and want to use CentOS 8.2 as the OS for the host, can I still use the graphical wizard from cockpit? I see it accessing the server... Or is it thought only to be run from ovirt-node-ng system? In case it is not possible is there a command line workflow I can use to get the same as the wizard playbook run? BTW: I want to use CentOS for this test lab because I need to install custom packages (for performance counters and other things) so I'd prefer the flexibility to have a plain CentOS and not the NG node. Thanks in advance, Gianluca

3 9

Add Node to a single node installation with self hosted engine.
by Marcel d'Heureuse 29 Oct '20

29 Oct '20

Hi, I got a problem with my Ovirt installation. Normally we deliver Ovirt as single node installation and we told our service guys if the internal client will have more redundancy we need two more server and add this to the single node installation. i thought that no one would order two new servers. Now I have the problem to get the system running. First item is, that this environment has no internet access. So I can't install software by update with yum. The Ovirt installation is running on Ovirt node 4.3.9 boot USB Stick. All three servers have the same software installed. On the single node I have installed the hosted Engine package 1,1 GB to deploy the self-hosted engine without internet. That works. Gluster, Ovirt, Self-Hosted engine are running on the server 01. What should I do first? Deploy the Glusterfs first and then add the two new hosts to the single node installation? Or should I deploy a new Ovirt System to the two new hosts and add later the cleaned host to the new Ovirt System? I have not found any items in this mailing list which gives me an idea what I should do now. Br Marcel

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Re: 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 Strahil Nikolov 29 Oct '20

29 Oct '20

That's not expected. You definately need to check the Engine's logs (on the Hosted or Dedicated Engine system) and the vdsm logs on the host. Usually , the first step is to "evacuate" (live migrate) all VMs from the Host and if it fails to do that in a reasonable timeframe - the maintenance is cancelled.Next it will set the host into maintenance and most probably (not sure about this one) the engine will assign a new host as SPM. Best Regards, Strahil Nikolov В сряда, 28 октомври 2020 г., 05:04:44 Гринуич+2, lifuqiong(a)sunyainfo.com <lifuqiong(a)sunyainfo.com> написа: Hi, Strahil, Thank you for your reply. I've try setting host to maintenance and the host reboot immediately, What does vdsm do when setting host to maintenance? Thank you Best Regards Mark Lee > From: Strahil Nikolov via Users > Date: 2020-10-27 23:44 > To: users; lifuqiong(a)sunyainfo.com > Subject: [ovirt-users] Re: 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 > When you set a host to maintenance from oVirt API/UI, one of the tasks is to umount any shared storage (incluing the NFS you got). Then rebooting should work like a charm. > > > > Why did you reboot without putting the node in maintenance ? > > > > P.S.: Do not confuse rebooting with fencing - the latter kills the node ungracefully in order to safely start HA VMs on another node. > > > > Best Regards, > > Strahil Nikolov > > > > > > > > > > > > > > В вторник, 27 октомври 2020 г., 10:27:01 Гринуич+2, lifuqiong(a)sunyainfo.com <lifuqiong(a)sunyainfo.com> написа: > > > > > > > > > > > > > > > > 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. > > _______________________________________________ > > Users mailing list -- users(a)ovirt.org > > To unsubscribe send an email to users-leave(a)ovirt.org > > Privacy Statement: https://www.ovirt.org/privacy-policy.html > > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/C2GATAD35SUVW… > > _______________________________________________ > > Users mailing list -- users(a)ovirt.org > > To unsubscribe send an email to users-leave(a)ovirt.org > > Privacy Statement: https://www.ovirt.org/privacy-policy.html > > oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ > > List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/T3ETYUH2QDB7Z… >

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[ANN] oVirt 4.4.3 Seventh Release Candidate is now available for testing
by Lev Veyde 29 Oct '20

29 Oct '20

oVirt 4.4.3 Seventh Release Candidate is now available for testing The oVirt Project is pleased to announce the availability of oVirt 4.4.3 Seventh Release Candidate for testing, as of October 29th, 2020. This update is the third in a series of stabilization updates to the 4.4 series. How to prevent hosts entering emergency mode after upgrade from oVirt 4.4.1 Note: Upgrading from 4.4.2 GA should not require re-doing these steps, if already performed while upgrading from 4.4.1 to 4.4.2 GA. These are only required to be done once. Due to Bug 1837864 <https://bugzilla.redhat.com/show_bug.cgi?id=1837864> - Host enter emergency mode after upgrading to latest build If you have your root file system on a multipath device on your hosts you should be aware that after upgrading from 4.4.1 to 4.4.3 you may get your host entering emergency mode. In order to prevent this be sure to upgrade oVirt Engine first, then on your hosts: 1. Remove the current lvm filter while still on 4.4.1, or in emergency mode (if rebooted). 2. Reboot. 3. Upgrade to 4.4.3 (redeploy in case of already being on 4.4.3). 4. Run vdsm-tool config-lvm-filter to confirm there is a new filter in place. 5. Only if not using oVirt Node: - run "dracut --force --add multipath” to rebuild initramfs with the correct filter configuration 6. Reboot. Documentation - If you want to try oVirt as quickly as possible, follow the instructions on the Download <https://ovirt.org/download/> page. - For complete installation, administration, and usage instructions, see the oVirt Documentation <https://ovirt.org/documentation/>. - For upgrading from a previous version, see the oVirt Upgrade Guide <https://ovirt.org/documentation/upgrade_guide/>. - For a general overview of oVirt, see About oVirt <https://ovirt.org/community/about.html>. Important notes before you try it Please note this is a pre-release build. The oVirt Project makes no guarantees as to its suitability or usefulness. This pre-release must not be used in production. You can hit: Problem: cannot install the best update candidate for package ovirt-engine-metrics-1.4.1.1-1.el8.noarch - nothing provides rhel-system-roles >= 1.0-19 needed by ovirt-engine-metrics-1.4.2-1.el8.noarch in order to get rhel-system-roles >= 1.0-19 you need https://buildlogs.centos.org/centos/8/virt/x86_64/ovirt-44/ repo since that package can be promoted to release only at 4.4.3 GA. Installation instructions For installation instructions and additional information please refer to: https://ovirt.org/documentation/ This release is available now on x86_64 architecture for: * Red Hat Enterprise Linux 8.2 or newer * CentOS Linux (or similar) 8.2 or newer This release supports Hypervisor Hosts on x86_64 and ppc64le architectures for: * Red Hat Enterprise Linux 8.2 or newer * CentOS Linux (or similar) 8.2 or newer * oVirt Node 4.4 based on CentOS Linux 8.2 (available for x86_64 only) See the release notes [1] for installation instructions and a list of new features and bugs fixed. Notes: - oVirt Appliance is already available for CentOS Linux 8 - oVirt Node NG is already available for CentOS Linux 8 Additional Resources: * Read more about the oVirt 4.4.3 release highlights: http://www.ovirt.org/release/4.4.3/ * 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/4.4.3/ [2] http://resources.ovirt.org/pub/ovirt-4.4-pre/iso/ -- Lev Veyde Senior Software Engineer, RHCE | RHCVA | MCITP Red Hat Israel <https://www.redhat.com> lev(a)redhat.com | lveyde(a)redhat.com <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>

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Hosted Engine install via cockpit - proxy issue
by simon＠justconnect.ie 29 Oct '20

29 Oct '20

I am installing oVirt in a closed environment where internet access is controlled by proxies. This works until the hosted engine install via cockpit where it fails to complete as it appears to require internet access to the repository. The only workaround I have found is to ssh onto the engine ‘mid install’ and add the proxy address to /etc/dnf/dnf.conf. After doing this the install is successful. Am I missing something or does this type of install require unfettered internet access?

3 3

when configuring multi path logical network selection area is empty, hence not able to configure multipathing
by dhanaraj.ramesh＠yahoo.com 29 Oct '20

29 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

1 0

Improve glusterfs performance
by suporte＠logicworks.pt 28 Oct '20

28 Oct '20

Hello, Can anyone help me in how can I improve the performance of glusterfs to work with oVirt? Thanks -- Jose Ferradeira http://www.logicworks.pt

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SPICE proxy behind nginx reverse proxy
by Colin Coe 28 Oct '20

28 Oct '20

Hi all As per $SUBJECT, I have a SPICE proxy behind a reverse proxy which all external VDI users are forced to use. We've only started doing this in the last week or so but I'm not getting heaps of reports SPICE sessions "freezing". The testing that I've done shows that a SPICE session that is unattended for 10-15 minutes hangs or freezes. By this I mean that you can't interact with the VM (using SPICE) via mouse or Keyboard. Restarting the SPICE session fixes the problem. Is anyone else doing this? If so, have you noticed the SPICE session freezes? Thanks in advance

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Re: 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 Strahil Nikolov 28 Oct '20

28 Oct '20

When you set a host to maintenance from oVirt API/UI, one of the tasks is to umount any shared storage (incluing the NFS you got). Then rebooting should work like a charm. Why did you reboot without putting the node in maintenance ? P.S.: Do not confuse rebooting with fencing - the latter kills the node ungracefully in order to safely start HA VMs on another node. Best Regards, Strahil Nikolov В вторник, 27 октомври 2020 г., 10:27:01 Гринуич+2, lifuqiong(a)sunyainfo.com <lifuqiong(a)sunyainfo.com> написа: 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. _______________________________________________ Users mailing list -- users(a)ovirt.org To unsubscribe send an email to users-leave(a)ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/C2GATAD35SUVW…

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