April 2021 - Users - Ovirt List Archives

How do I share a disk across multiple VMs?

by David White

I need to mount a partition across 3 different VMs. How do I attach a disk to multiple VMs? This looks like fairly old documentation-not-documentation: https://www.ovirt.org/develop/release-ma... Sent with ProtonMail Secure Email.

4 years

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Problem with ISCSI multipathing identifying faild path to a LUN every few seconds.

by Gal Villaret

Hi All, In the past few days, we have been having problems with hosts becoming unmanageable due to multipathd identifying false failed paths and VDSM crashing because of it. We were running version 4.4.1 and upgrading to 4.4.5(engine) and 4.4.6(nodes) seems to have resolved the VDSM. However, currently, we see that the multipathing events continue. From what we have observed, the events start in correlation to the host reporting on low swap space. The low swap space seems to be related to Commvault backup operation running. By running top on the host while a backup operation is running I can see swap being consumed to 100% although there is plenty of RAM available. After the multipath events start happening the only means of stopping it was to reboot the host. This is the warning in oVirt UI: Apr 24, 2021, 9:14:07 PM - Available swap memory of host Ovirt-Node2 [953 MB] is under defined threshold [1024 MB]. This is the first appearance of the multipath event in /var/log/messages: Apr 24 21:14:58 ovirt-node2 kernel: sd 21:0:0:9: [sdgi] tag#77 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=15s Apr 24 21:14:58 ovirt-node2 kernel: sd 21:0:0:9: [sdgi] tag#77 Sense Key : Aborted Command [current] Apr 24 21:14:58 ovirt-node2 kernel: sd 21:0:0:9: [sdgi] tag#77 <<vendor>>ASC=0xc1 ASCQ=0x1 Apr 24 21:14:58 ovirt-node2 kernel: sd 21:0:0:9: [sdgi] tag#77 CDB: Read(16) 88 00 00 00 00 00 79 ac 75 a0 00 00 06 00 00 00 Apr 24 21:14:58 ovirt-node2 kernel: blk_update_request: I/O error, dev sdgi, sector 2041345440 op 0x0:(READ) flags 0x4200 phys_seg 192 prio class 0 Apr 24 21:14:58 ovirt-node2 kernel: device-mapper: multipath: 253:20: Failing path 131:224. Apr 24 21:14:58 ovirt-node2 multipathd[3044]: sdgi: mark as failed Apr 24 21:14:58 ovirt-node2 multipathd[3044]: 3600000e00d2c0000002cb4a8000b0000: remaining active paths: 11 Apr 24 21:15:03 ovirt-node2 multipathd[3044]: 3600000e00d2c0000002cb4a8000b0000: sdgi - tur checker reports path is up Apr 24 21:15:03 ovirt-node2 multipathd[3044]: 131:224: reinstated Apr 24 21:15:03 ovirt-node2 multipathd[3044]: 3600000e00d2c0000002cb4a8000b0000: remaining active paths: 12 Apr 24 21:15:03 ovirt-node2 kernel: device-mapper: multipath: 253:20: Reinstating path 131:224. Apr 24 21:15:03 ovirt-node2 kernel: sd 21:0:0:9: alua: port group 8091 state A preferred supports toluSNA Apr 24 21:15:03 ovirt-node2 kernel: sd 21:0:0:9: alua: port group 8091 state A preferred supports toluSNA Apr 24 21:15:13 ovirt-node2 kernel: sd 13:0:0:9: [sdau] tag#25 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE cmd_age=15s Apr 24 21:15:13 ovirt-node2 kernel: sd 13:0:0:9: [sdau] tag#25 Sense Key : Aborted Command [current] Apr 24 21:15:13 ovirt-node2 kernel: sd 13:0:0:9: [sdau] tag#25 <<vendor>>ASC=0xc1 ASCQ=0x1 Apr 24 21:15:13 ovirt-node2 kernel: sd 13:0:0:9: [sdau] tag#25 CDB: Read(16) 88 00 00 00 00 00 79 ac 75 a0 00 00 06 00 00 00 Apr 24 21:15:13 ovirt-node2 kernel: blk_update_request: I/O error, dev sdau, sector 2041345440 op 0x0:(READ) flags 0x4200 phys_seg 192 prio class 0 Apr 24 21:15:13 ovirt-node2 kernel: device-mapper: multipath: 253:20: Failing path 66:224. Apr 24 21:15:13 ovirt-node2 multipathd[3044]: sdau: mark as failed Underlying storage is Fujitsu DX200 S5 with all SSD drives. Each host has two 10Gbit network adapters dedicated to ISCSI. Any help with this would be highly appreciated. Thanks, Gal Villaret

4 years

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Migration VM and Storage Domains

by LS CHENG

Hi I have a question about migrating VM's. If I have 2 VM and each VM is stored in separate Storage Domains can the VM migrate between physical hosts? Or the VM must be stored in the same Storage Domain? For example VM1 is stored in SD1 and runs in HOST-A VM2 is stored in SD2 and runs in HOST-B Can VM2 migrated to HOST-A? Thanks

4 years

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Re: Attempting to detach a storage domain

by Benny Zlotnik

What do the logs say? This usually means that not all hosts were able to disconnect from it On Sun, Apr 25, 2021 at 9:45 AM Matthew.Stier(a)fujitsu.com <Matthew.Stier(a)fujitsu.com> wrote: > > Ovirt: 4.3.10 > > Storage: iSCSI > > > > Problem: Attempting to place storage domain into ‘maintenance’ in preparation for detachment and destruction, has left it hung in a ‘Preparation for maintenance’ state. > > > > I have three storage domain I need to put into maintenance, detach and delete. When I placed place the first, and smallest (100GB) into maintenance mode, it switched to ‘Preparing for Maintenance’, and has stuck there for hours. > > > > Early on, I was able to re-activate it, but I do want to remove for use somewhere else, and I want make sure I can remove it, before I try to do the same with two 11TB storage domains. > > _______________________________________________ > 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/HY3LWX7HMN5...

4 years

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Attempting to detach a storage domain

by Matthew.Stier＠fujitsu.com

Ovirt: 4.3.10 Storage: iSCSI Problem: Attempting to place storage domain into 'maintenance' in preparation for detachment and destruction, has left it hung in a 'Preparation for maintenance' state. I have three storage domain I need to put into maintenance, detach and delete. When I placed place the first, and smallest (100GB) into maintenance mode, it switched to 'Preparing for Maintenance', and has stuck there for hours. Early on, I was able to re-activate it, but I do want to remove for use somewhere else, and I want make sure I can remove it, before I try to do the same with two 11TB storage domains.

4 years

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Can we remove Export and ISO Domain from KVM ?.

by smuthyala＠helenoftroy.com

I need to migrate both Export and ISO Domains to newer storage. Can i remove them and recreate. Or is there a way to export and import into a newer storage. TIA

4 years

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ovsdb-server tlsv1 unknown ca

by ozmen62＠hotmail.com

4 years

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Re: Ansible ovirt.ovirt_vm nics

by Martin Perina

Hi Matthew, Could you please share with us your playbook? Which ansible version are you using? Are you using ovirt_vm module from oVirt Ansible Collection which contains newer versions than the ovirt_vm module included in Ansible 2.9? https://docs.ansible.com/ansible/latest/collections/ovirt/ovirt/ovirt_vm_... Thanks, Martin On Thu, Apr 22, 2021 at 9:28 AM Matthew.Stier(a)fujitsu.com < Matthew.Stier(a)fujitsu.com> wrote: > The ‘nics’ section of ovirt_vm is vague and with nearly no examples. > > > > My playbook is based upon > https://blogs.oracle.com/scoter/ansible-with-oracle-linux-virtualization-... > > > > I’ve made several modifications, (more default) and added a few lines, > which I believe is supposed to assign vnic profiles to the primary vnic > (nic1), based upon the definition of ‘vm_nic1_profile’ defined in an > included ‘ini’ file. (the profile defaulting to blank if it is not defined > in the ini file.) > > > > It isn’t doing its job. > > > > nics: > > - name: “nic1” > > profile_name: "{{ hostvars[item]['vm_nic1_profile'] | default('') }}” > > > > > > The playbook runs without complaint. If I run it with option ‘-vvv’ part > of the output lists the variables, but the ‘nics’ variable is an empty list > (nics[]) > > > > Any hints on what I’m doing wrong? I’ve checked the forum, but it tends > to strip leading spaces, which is bad for indent sensitive code. > _______________________________________________ > 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/MEZLXGSSRCR... > -- Martin Perina Manager, Software Engineering Red Hat Czech s.r.o.

4 years

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n00b Requesting Some Advice

by matthew＠peregrineit.net

Hi All, I need some "best practice" advice. We have a Ceph Storage Cluster (Octopus moving to Pacific) which we'd like to use with our new oVirt Cluster (all on CentOS 8 boxes). What I'd like to know is what is the "best" (ie recommended / best practice) way of doing this - via iSCSI, CFS, 'raw' RBD blocks, some other way I haven't read about yet, etc? I realise 'best' is a subjective term, but what I tend to do is do 'manual' installs so that I both actually understand what is happening (ie how things fit together - I pull apart and rebuild mechanical clocks and watches for the same reason) and also so I can '"Puppet-ise" the results for future use. This means that I am *not* necessarily looking for "quick and dirty" or "quick and easy" (ie, I have no trouble using the CLI and 'vim-ing' conf files as required) but I do want a solid, "best-practice" system when I'm done. So, can some please help? And also, would you mind pointing me towards the relevant documentation for the answer(s) supplied (yes, I *always* RTFM :-) ). Thanks in advance Dulux-Oz

4 years

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not able to upload disks, iso - Connection to ovirt-imageio service has failed. Ensure that ovirt-engine certificate is registered as a valid CA in the browser.

by dhanaraj.ramesh＠yahoo.com

Hi We are unning with 4.4.3.12-1.el8 version and so far working fine, but today users complained they are unable to upload new disks and upon checking found "Connection to ovirt-imageio service has failed. Ensure that ovirt-engine certificate is registered as a valid CA in the browser" during testing option. please help on this and if there is any temp solution is available share me the steps

4 years

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Users April 2021