[ovirt-users] Re: Re-creating ISO Storage Domain after Manager Rebuild
On Sat, Aug 15, 2020 at 9:24 AM Alex K wrote: > > > > On Fri, Aug 14, 2020, 16:50 Bob Franzke via Users wrote: >> >> OK thanks for the reply. As you can perhaps tell I am a complete noob with >> Ovirt. The fact its working now at all is a complete miracle. >> >> >>> I see 2 approaches on fixing the broken storage domain: >> >>> - log to engine, switch to postgresql and start searching in the DB for >> >>> the uuid. >> >> I am not sure what is meant here by 'switch to postgresql'. Can you clarify? >> >> >>> Then create the share, create the dir inside and then oVirt should be >> >>> happy. >> >>> Yet it will start complaining for the ISOs that are also missing (and >> >>> also unique uuids) >> >>> - Another approach is to try to remove the ISO domain. Have you tried to >> >>> set the domain in maintenance first and then to remove it ? >> >> I am not sure how this is done. I don’t seem to have any options in the >> Ovirt admin portal to do anything other than destroy the domain. I don’t see >> a maintenance mode option in the Admin UI. >> >> Check your VMs , if any has an ISO attached to it. >> >> We have templates that were created by someone else. All the VMs seem to be >> built off of those templates, which I assume were built initially by >> booting off DVD ISOs and installing the OS's for the template VMs. Maybe I >> am missing how VMs get OS's on them in Ovirt. I think the only thing the iso >> domain did was allow us to use the virtio drivers for booting off of ISO >> images. I am not sure if that’s accurate or makes sense here. I understood >> that when the ISO domain is created that those VirtIO drivers for CD booting >> are created as part of the ISO domain creation. > > When an iso domain is created it is empty. The virtio iso images are not > automatically created, need to be uploaded. Actually, in the past, we used to have such a feature: https://bugzilla.redhat.com/show_bug.cgi?id=1026933 Creation of iso domain was done by engine-setup, defaulted to Yes, and if the windows-guest-tools (WGT) iso rpm was installed, it was copied to it, all "automagically". At the time, WGT was available only on/for RHV, and for oVirt one had to manually copy the drivers/tools. Since then, two parallel processes developed, leading to today's situation: 1. WGT was also created for oVirt, based on NSIS (RHV's was based on InstallShield), and later reimplemented (a new 4.4 change) using WIX, OGA was deprecated, and the tools ISO is now part of the OS (as part of virtio-win project), since basically nothing in it is now oVirt-specific. 2. We realized that having the ISO domain on the engine machine is problematic, for various reasons, and gradually made it harder to use. We still kept it over upgrades, if existing, but didn't (want to) create it on new setups. Last relevant change here is: https://bugzilla.redhat.com/1332813 https://gerrit.ovirt.org/74409 >> >> This would then give you an option of attaching an uploaded ISO as a CD-ROM >> which you can use to boot a VM off of. I have a CentOS VM which has a >> corrupted XFS filesystem that I would like to boot off of a Rescue CD to >> repair the FS. The only way I know this can be done is by having the rescue >> disk ISO uploaded to an ISO domain. Perhaps there is a different way to do >> that. In any case, it would be good to get the ISO domain working. Right now >> when I try and attach a CD to a VM for booting, there are no options to >> choose and I am assuming its because the VirtIO drivers needed to do such a >> thing are missing because the ISO domain is broken. Sound right? >> >> Also, you can upload an ISO to a data domain and use that to install >> VMs. >> >> Can this be used to boot off a CD in a situation where I need to boot off a >> CD ISO like you would need to do to boot off a CentOS rescue CD? > > Yes We planned to fully drop the "ISO domain" concent, but it proved harder than expected, so it's there, but you are not expected/supposed to use it - for most situations, a data domain is more convenient: https://bugzilla.redhat.com/show_bug.cgi?id=1543512 >> >> >> Thanks very much for the help. This was a system I inherited from someone >> else and I have really no idea what I am doing with it (I am not a >> virtualization expert and have a Network Engineering background). > > Since you lost the isos, I would destroy the domain and either upload isos > directly at the data storage domain or recreate the iso domain from scratch. Yes. And please keep us updated with both success and failures... Good luck and best regards, >> >> >> -Original Message- >> From: hunter86...@yahoo.com (Strahil Nikolov) >> Sent: Friday, August 14, 2020 4:25 AM >> To: bob.fran...@mdaemon.com; users@ovirt.org >> Subject: Re: [ovirt-users] Re-creating ISO Storage Domain after Manager >> Rebuild >> >> When oVirt creates a storage domain , it assigns an unique id (in the engine >> DB) and a single directory,
[ovirt-users] Re: Re-creating ISO Storage Domain after Manager Rebuild
On Fri, Aug 14, 2020, 16:50 Bob Franzke via Users wrote: > OK thanks for the reply. As you can perhaps tell I am a complete noob with > Ovirt. The fact its working now at all is a complete miracle. > > >>> I see 2 approaches on fixing the broken storage domain: > >>> - log to engine, switch to postgresql and start searching in the DB > for the uuid. > > I am not sure what is meant here by 'switch to postgresql'. Can you > clarify? > > >>> Then create the share, create the dir inside and then oVirt should be > happy. > >>> Yet it will start complaining for the ISOs that are also missing (and > also unique uuids) > >>> - Another approach is to try to remove the ISO domain. Have you tried > to set the domain in maintenance first and then to remove it ? > > I am not sure how this is done. I don’t seem to have any options in the > Ovirt admin portal to do anything other than destroy the domain. I don’t > see a maintenance mode option in the Admin UI. > > Check your VMs , if any has an ISO attached to it. > > We have templates that were created by someone else. All the VMs seem to > be built off of those templates, which I assume were built initially by > booting off DVD ISOs and installing the OS's for the template VMs. Maybe I > am missing how VMs get OS's on them in Ovirt. I think the only thing the > iso domain did was allow us to use the virtio drivers for booting off of > ISO images. I am not sure if that’s accurate or makes sense here. I > understood that when the ISO domain is created that those VirtIO drivers > for CD booting are created as part of the ISO domain creation. When an iso domain is created it is empty. The virtio iso images are not automatically created, need to be uploaded. > This would then give you an option of attaching an uploaded ISO as a > CD-ROM which you can use to boot a VM off of. I have a CentOS VM which has > a corrupted XFS filesystem that I would like to boot off of a Rescue CD to > repair the FS. The only way I know this can be done is by having the rescue > disk ISO uploaded to an ISO domain. Perhaps there is a different way to do > that. In any case, it would be good to get the ISO domain working. Right > now when I try and attach a CD to a VM for booting, there are no options to > choose and I am assuming its because the VirtIO drivers needed to do such a > thing are missing because the ISO domain is broken. Sound right? > > Also, you can upload an ISO to a data domain and use that to > install VMs. > > Can this be used to boot off a CD in a situation where I need to boot off > a CD ISO like you would need to do to boot off a CentOS rescue CD? > Yes > > Thanks very much for the help. This was a system I inherited from someone > else and I have really no idea what I am doing with it (I am not a > virtualization expert and have a Network Engineering background). > Since you lost the isos, I would destroy the domain and either upload isos directly at the data storage domain or recreate the iso domain from scratch. > > -Original Message- > From: hunter86...@yahoo.com (Strahil Nikolov) > Sent: Friday, August 14, 2020 4:25 AM > To: bob.fran...@mdaemon.com; users@ovirt.org > Subject: Re: [ovirt-users] Re-creating ISO Storage Domain after Manager > Rebuild > > When oVirt creates a storage domain , it assigns an unique id (in the > engine DB) and a single directory, named as the uuid , is created there. > > As you lost the dir, your storage domain is gone but as it's an iso domain > - it shouldn't be critical. > > I see 2 approaches on fixing the broken storage domain: > - log to engine, switch to postgresql and start searching in the DB for > the uuid. > Then create the share, create the dir inside and then oVirt should be > happy. > Yet it will start complaining for the ISOs that are also missing (and also > unique uuids) > - Another approach is to try to remove the ISO domain. Have you tried to > set the domain in maintenance first and then to remove it ? > > Check your VMs , if any has an ISO attached to it. > > Also, you can upload an ISO to a data domain and use that to install VMs. > > Best Regards, > Strahil Nikolov > > На 13 август 2020 г. 22:21:10 GMT+03:00, "bob.franzke--- via Users" < > users@ovirt.org> написа: > >Hi All, > > > >Late last year I had a disk issue with my Ovirt Manager Server that > >required I rebuild it and restored from backups. While this worked > >mostly, one thing that did not get put back correctly was the physical > >storage location of an ISO domain on the manager server. I believe this > >was previously set up as an NFS share being hosted on the Manager > >Server itself. The physical disk path and filesystem were not > >re-created on the manager server's local disk. So after the restore, > >the ISO domain shows up in the Ovirt Admin portal but shows the as > >down, and inactive. If I go into the domain, the 'Manage Domain' and > >'Remove' buttons are not available. The only option I have for this is > >'Destroy'.
[ovirt-users] Re: Re-creating ISO Storage Domain after Manager Rebuild
OK thanks for the reply. As you can perhaps tell I am a complete noob with Ovirt. The fact its working now at all is a complete miracle. >>> I see 2 approaches on fixing the broken storage domain: >>> - log to engine, switch to postgresql and start searching in the DB for the >>> uuid. I am not sure what is meant here by 'switch to postgresql'. Can you clarify? >>> Then create the share, create the dir inside and then oVirt should be happy. >>> Yet it will start complaining for the ISOs that are also missing (and also >>> unique uuids) >>> - Another approach is to try to remove the ISO domain. Have you tried to >>> set the domain in maintenance first and then to remove it ? I am not sure how this is done. I don’t seem to have any options in the Ovirt admin portal to do anything other than destroy the domain. I don’t see a maintenance mode option in the Admin UI. Check your VMs , if any has an ISO attached to it. We have templates that were created by someone else. All the VMs seem to be built off of those templates, which I assume were built initially by booting off DVD ISOs and installing the OS's for the template VMs. Maybe I am missing how VMs get OS's on them in Ovirt. I think the only thing the iso domain did was allow us to use the virtio drivers for booting off of ISO images. I am not sure if that’s accurate or makes sense here. I understood that when the ISO domain is created that those VirtIO drivers for CD booting are created as part of the ISO domain creation. This would then give you an option of attaching an uploaded ISO as a CD-ROM which you can use to boot a VM off of. I have a CentOS VM which has a corrupted XFS filesystem that I would like to boot off of a Rescue CD to repair the FS. The only way I know this can be done is by having the rescue disk ISO uploaded to an ISO domain. Perhaps there is a different way to do that. In any case, it would be good to get the ISO domain working. Right now when I try and attach a CD to a VM for booting, there are no options to choose and I am assuming its because the VirtIO drivers needed to do such a thing are missing because the ISO domain is broken. Sound right? Also, you can upload an ISO to a data domain and use that to install VMs. Can this be used to boot off a CD in a situation where I need to boot off a CD ISO like you would need to do to boot off a CentOS rescue CD? Thanks very much for the help. This was a system I inherited from someone else and I have really no idea what I am doing with it (I am not a virtualization expert and have a Network Engineering background). -Original Message- From: hunter86...@yahoo.com (Strahil Nikolov) Sent: Friday, August 14, 2020 4:25 AM To: bob.fran...@mdaemon.com; users@ovirt.org Subject: Re: [ovirt-users] Re-creating ISO Storage Domain after Manager Rebuild When oVirt creates a storage domain , it assigns an unique id (in the engine DB) and a single directory, named as the uuid , is created there. As you lost the dir, your storage domain is gone but as it's an iso domain - it shouldn't be critical. I see 2 approaches on fixing the broken storage domain: - log to engine, switch to postgresql and start searching in the DB for the uuid. Then create the share, create the dir inside and then oVirt should be happy. Yet it will start complaining for the ISOs that are also missing (and also unique uuids) - Another approach is to try to remove the ISO domain. Have you tried to set the domain in maintenance first and then to remove it ? Check your VMs , if any has an ISO attached to it. Also, you can upload an ISO to a data domain and use that to install VMs. Best Regards, Strahil Nikolov На 13 август 2020 г. 22:21:10 GMT+03:00, "bob.franzke--- via Users" написа: >Hi All, > >Late last year I had a disk issue with my Ovirt Manager Server that >required I rebuild it and restored from backups. While this worked >mostly, one thing that did not get put back correctly was the physical >storage location of an ISO domain on the manager server. I believe this >was previously set up as an NFS share being hosted on the Manager >Server itself. The physical disk path and filesystem were not >re-created on the manager server's local disk. So after the restore, >the ISO domain shows up in the Ovirt Admin portal but shows the as >down, and inactive. If I go into the domain, the 'Manage Domain' and >'Remove' buttons are not available. The only option I have for this is >'Destroy'. I right now have no ability to do things like boot a VM from >a CD and am assuming its because the ISO domain that the images for >this would be stored on is not available. How can I recreate this ISO >domains to be able to upload ISO images that VM machines can boot >from.The original path on the manager server was /gluster: > >sdc 8:32 0 278.9G > 0 disk >├─sdc1 8:33
[ovirt-users] Re: Re-creating ISO Storage Domain after Manager Rebuild
When oVirt creates a storage domain , it assigns an unique id (in the engine DB) and a single directory, named as the uuid , is created there. As you lost the dir, your storage domain is gone but as it's an iso domain - it shouldn't be critical. I see 2 approaches on fixing the broken storage domain: - log to engine, switch to postgresql and start searching in the DB for the uuid. Then create the share, create the dir inside and then oVirt should be happy. Yet it will start complaining for the ISOs that are also missing (and also unique uuids) - Another approach is to try to remove the ISO domain. Have you tried to set the domain in maintenance first and then to remove it ? Check your VMs , if any has an ISO attached to it. Also, you can upload an ISO to a data domain and use that to install VMs. Best Regards, Strahil Nikolov На 13 август 2020 г. 22:21:10 GMT+03:00, "bob.franzke--- via Users" написа: >Hi All, > >Late last year I had a disk issue with my Ovirt Manager Server that >required I rebuild it and restored from backups. While this worked >mostly, one thing that did not get put back correctly was the physical >storage location of an ISO domain on the manager server. I believe this >was previously set up as an NFS share being hosted on the Manager >Server itself. The physical disk path and filesystem were not >re-created on the manager server's local disk. So after the restore, >the ISO domain shows up in the Ovirt Admin portal but shows the as >down, and inactive. If I go into the domain, the 'Manage Domain' and >'Remove' buttons are not available. The only option I have for this is >'Destroy'. I right now have no ability to do things like boot a VM from >a CD and am assuming its because the ISO domain that the images for >this would be stored on is not available. How can I recreate this ISO >domains to be able to upload ISO images that VM machines can boot >from.The original path on the manager server was /gluster: > >sdc 8:32 0 278.9G > 0 disk >├─sdc1 8:33 0 1G > 0 part /boot >└─sdc2 8:34 0 277.9G > 0 part >├─centos_mydesktop-root 253:0050G >0 lvm / >├─centos_mydesktop-swap 253:10 23.6G >0 lvm [SWAP] >├─centos_mydesktop-home 253:2025G >0 lvm /home >└─centos_mydesktop-gluster 253:30 179.3G >0 lvm /gluster > >The current layout is now: > >└─sda3 > 8:30 277.7G 0 part >├─centos-root > 253:0050G 0 lvm / >├─centos-swap > 253:10 4G 0 lvm [SWAP] >└─centos-home > 253:20 223.7G 0 lvm /home > >Can I just create a new filesystem here, destroy the old ISO domain, >and add a new one using the new path? I am a total Ovirt Noob so would >appreciate any help here. Thanks. > >Bob >___ >Users mailing list -- users@ovirt.org >To unsubscribe send an email to users-le...@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/N65ZFGT5C3CDL5R5226G5YDZOT5LAXMN/ ___ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@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/VEQMSOODW3SZ6NLS4PTRXYC7U2CY6ECN/
