This is a simple installation with one storage, 3 hosts. One volume with 2 bricks, the second brick was to get more space to try to remove the disk, but without success
]# df -h Filesystem Size Used Avail Use% Mounted on /dev/md127 50G 2.5G 48G 5% / devtmpfs 7.7G 0 7.7G 0% /dev tmpfs 7.7G 16K 7.7G 1% /dev/shm tmpfs 7.7G 98M 7.6G 2% /run tmpfs 7.7G 0 7.7G 0% /sys/fs/cgroup /dev/md126 1016M 194M 822M 20% /boot /dev/md125 411G 407G 4.1G 100% /home gfs2.domain.com:/data 461G 414G 48G 90% /rhev/data-center/mnt/glusterSD/gfs2.domain.com:_data tmpfs 1.6G 0 1.6G 0% /run/user/0 # gluster volume status data Status of volume: data Gluster process TCP Port RDMA Port Online Pid ------------------------------------------------------------------------------ Brick gfs2.domain.com:/home/brick1 49154 0 Y 8908 Brick gfs2.domain.com:/brickx 49155 0 Y 8931 Task Status of Volume data ------------------------------------------------------------------------------ There are no active volume tasks # gluster volume info data Volume Name: data Type: Distribute Volume ID: 2d3ea533-aca3-41c4-8cb6-239fe4f82bc3 Status: Started Snapshot Count: 0 Number of Bricks: 2 Transport-type: tcp Bricks: Brick1: gfs2.domain.com:/home/brick1 Brick2: gfs2.domain.com:/brickx Options Reconfigured: cluster.min-free-disk: 1% cluster.data-self-heal-algorithm: full performance.low-prio-threads: 32 features.shard-block-size: 512MB features.shard: on storage.owner-gid: 36 storage.owner-uid: 36 transport.address-family: inet nfs.disable: on De: "Strahil Nikolov" <hunter86...@yahoo.com> Para: supo...@logicworks.pt Cc: "users" <users@ovirt.org> Enviadas: Terça-feira, 27 De Outubro de 2020 1:00:08 Assunto: Re: [ovirt-users] Re: Gluster Domain Storage full So what is the output of "df" agianst : - all bricks in the volume (all nodes) - on the mount point in /rhev/mnt/.... Usually adding a new brick (per host) in replica 3 volume should provide you more space. Also what is the status of the volume: gluster volume status <VOL> gluster volume info <VOL> Best Regards, Strahil Nikolov В четвъртък, 15 октомври 2020 г., 16:55:27 Гринуич+3, <supo...@logicworks.pt> написа: Hello, I just add a second brick to the volume. Now I have 10% free, but still cannot delete the disk. Still the same message: VDSM command DeleteImageGroupVDS failed: Could not remove all image's volumes: (u'b6165676-a6cd-48e2-8925-43ed49bc7f8e [Errno 28] No space left on device',) Any idea? Thanks José ________________________________ De: "Strahil Nikolov" <hunter86...@yahoo.com> Para: supo...@logicworks.pt Cc: "users" <users@ovirt.org> Enviadas: Terça-feira, 22 De Setembro de 2020 13:36:27 Assunto: Re: [ovirt-users] Re: Gluster Domain Storage full Any option to extend the Gluster Volume ? Other approaches are quite destructive. I guess , you can obtain the VM's xml via virsh and then copy the disks to another pure-KVM host. Then you can start the VM , while you are recovering from the situation. virsh -c qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf dumpxml <VM_NAME> > /some/path/<VM_NAME>.xml Once you got the VM running on a pure-KVM host , you can go to oVirt and try to wipe the VM from the UI. Usually those 10% reserve is just in case something like this one has happened, but Gluster doesn't check it every second (or the overhead will be crazy). Maybe you can extend the Gluster volume temporarily , till you manage to move away the VM to a bigger storage. Then you can reduce the volume back to original size. Best Regards, Strahil Nikolov В вторник, 22 септември 2020 г., 14:53:53 Гринуич+3, supo...@logicworks.pt <supo...@logicworks.pt> написа: Hello Strahil, I just set cluster.min-free-disk to 1%: # gluster volume info data Volume Name: data Type: Distribute Volume ID: 2d3ea533-aca3-41c4-8cb6-239fe4f82bc3 Status: Started Snapshot Count: 0 Number of Bricks: 1 Transport-type: tcp Bricks: Brick1: node2.domain.com:/home/brick1 Options Reconfigured: cluster.min-free-disk: 1% cluster.data-self-heal-algorithm: full performance.low-prio-threads: 32 features.shard-block-size: 512MB features.shard: on storage.owner-gid: 36 storage.owner-uid: 36 transport.address-family: inet nfs.disable: on But still get the same error: Error while executing action: Cannot move Virtual Disk. Low disk space on Storage Domain I restarted the glusterfs volume. But I can not do anything with the VM disk. I know that filling the bricks is very bad, we lost access to the VM. I think there should be a mechanism to prevent stopping the VM. we should continue to have access to the VM to free some space. If you have a VM with a Thin Provision disk, if the VM fills the entire disk, we got the same problem. Any idea? Thanks José ________________________________ De: "Strahil Nikolov" <hunter86...@yahoo.com> Para: "users" <users@ovirt.org>, supo...@logicworks.pt Enviadas: Segunda-feira, 21 De Setembro de 2020 21:28:10 Assunto: Re: [ovirt-users] Gluster Domain Storage full Usually gluster has a 10% reserver defined in 'cluster.min-free-disk' volume option. You can power off the VM , then set cluster.min-free-disk to 1% and immediately move any of the VM's disks to another storage domain. Keep in mind that filling your bricks is bad and if you eat that reserve , the only option would be to try to export the VM as OVA and then wipe from current storage and import in a bigger storage domain. Of course it would be more sensible to just expand the gluster volume (either scale-up the bricks -> add more disks, or scale-out -> adding more servers with disks on them), but I guess that is not an option - right ? Best Regards, Strahil Nikolov В понеделник, 21 септември 2020 г., 15:58:01 Гринуич+3, supo...@logicworks.pt <supo...@logicworks.pt> написа: Hello, I'm running oVirt Version 4.3.4.3-1.el7. I have a small GlusterFS Domain storage brick on a dedicated filesystem serving only one VM. The VM filled all the Domain storage. The Linux filesystem has 4.1G available and 100% used, the mounted brick has 0GB available and 100% used I can not do anything with this disk, for example, if I try to move it to another Gluster Domain Storage get the message: Error while executing action: Cannot move Virtual Disk. Low disk space on Storage Domain Any idea? Thanks -- ________________________________ Jose Ferradeira http://www.logicworks.pt _______________________________________________ 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/WFN2VOQZPPVCGXAIFEYVIDEVJEUCSWY7/ _______________________________________________ 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/AIJUP2HZIWRSQHN4XU3BGGT2ZDKEVJZ3/
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