Hi Florian, Did you check the IO load on the SPM host during the backup? If you have 1Gbit network then the maximum theoretical IO is restricted to 100MB/s . So if you get 20GB raw preallocated disk then a single disk backup will be about: 20/0.08/3600 hours x 3times~10mins: .08 is 20% overhead,3time for the clone-export-deletesnap process. Vdsm has also restriction on the migration process to avoid the network saturation. Check the Cluster properties: this is available for the 4.0 capable clusters. or set the migration_max_bandwidth in vdsm.conf on the hosts.
Am 05.01.2017 6:27 nachm. schrieb "Florian Nolden" <f.nol...@xilloc.com>: > Hallo everyone, > > I would like to update my Ovirt installation but, before that I would like > to create proper VM backups. Currently I try to automate the backups and I > use the implementation of the following project. > https://github.com/wefixit-AT/oVirtBackup > > The main idea is to use the Ovirt-API to trigger a snapshot, create a new > VM from the snapshot, delete the snapshot, export the vm to the export > domain, delete the vm. > > This process takes even with only a 20 GB vm disk 55 Minutes. I have now > 21 VMs with average 30 GB HDD space, that would mean that the backup job > runs 22 hours. > > Is there something wrong with my setup? > Config? > Is there a better way to automate backups? > Is anyone else doing VM Exports as backup or are you just using snapshots? > > > Specs: > HA Cluster 3 Nodes each has: > 2x 6x 2.96 GHz, 96 GB RAM, 120 GB HDD for CentOS7, 1 TB SSD VM-Storage > (Gluster FS), 4x 1 GBit LAN Bond, 4x 1GBit SAN Bond (Gluster Network, > connection to Backup NAS/ Export Domain) > Ovirt 4.0.3 > > The script output: > Jan 05 14:12:16: Start backup for: wiki (20 GB) > Jan 05 14:12:17: Snapshot creation started ... > Jan 05 14:12:30: Snapshot created > Jan 05 14:12:40: Clone into VM started ... > Jan 05 14:36:37: Cloning finished > Jan 05 14:36:38: Snapshot deletion started ... > Jan 05 14:59:27: Snapshots deleted > Jan 05 14:59:28: Export started ... > Jan 05 15:07:09: Exporting finished > Jan 05 15:07:09: Delete cloned VM started ... > Jan 05 15:07:15: Cloned VM deleted > Jan 05 15:07:15: Duration: 55:0 minutes > Jan 05 15:07:15: VM exported as wiki_BACKUP_010516 > Jan 05 15:07:15: Backup done for: wiki > Jan 05 15:07:15: All backups done > > > Thanks, > Florain > > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >
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