<div dir="auto">Hi Florian,<div dir="auto">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 .</div><div dir="auto">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.</div><div dir="auto"><span style="font-family:sans-serif">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 </span><span style="color:rgb(34,34,34);font-family:roboto-regular,helveticaneue,arial,sans-serif;font-size:14px;background-color:rgb(255,255,255)">migration_max_bandwidth</span><span style="font-family:sans-serif"> in vdsm.conf on the hosts.</span><br></div><div dir="auto"><span style="font-family:sans-serif"><br></span></div></div><div class="gmail_extra"><br><div class="gmail_quote">Am 05.01.2017 6:27 nachm. schrieb "Florian Nolden" <<a href="mailto:f.nolden@xilloc.com">f.nolden@xilloc.com</a>>:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hallo everyone, </div><div><br></div><div>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.</div><div><a href="https://github.com/wefixit-AT/oVirtBackup" target="_blank">https://github.com/wefixit-AT/<wbr>oVirtBackup</a><br></div><div><br></div><div>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.</div><div><br></div><div>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. </div><div><br></div><div>Is there something wrong with my setup? </div><div>Config? </div><div>Is there a better way to automate backups? </div><div>Is anyone else doing VM Exports as backup or are you just using snapshots? </div><div><br></div><div><br></div><div>Specs: </div><div>HA Cluster 3 Nodes each has:</div><div>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)</div><div>Ovirt 4.0.3 </div><div><br></div><div>The script output: </div><div><div>Jan 05 14:12:16: Start backup for: wiki (20 GB)</div><div>Jan 05 14:12:17: Snapshot creation started ...</div><div>Jan 05 14:12:30: Snapshot created</div><div>Jan 05 14:12:40: Clone into VM started ...</div><div>Jan 05 14:36:37: Cloning finished</div><div>Jan 05 14:36:38: Snapshot deletion started ...</div><div>Jan 05 14:59:27: Snapshots deleted</div><div>Jan 05 14:59:28: Export started ...</div><div>Jan 05 15:07:09: Exporting finished</div><div>Jan 05 15:07:09: Delete cloned VM started ...</div><div>Jan 05 15:07:15: Cloned VM deleted</div><div>Jan 05 15:07:15: Duration: 55:0 minutes</div><div>Jan 05 15:07:15: VM exported as wiki_BACKUP_010516</div><div>Jan 05 15:07:15: Backup done for: wiki</div><div>Jan 05 15:07:15: All backups done</div></div><div><br></div><div><br></div><div>Thanks,</div><div>Florain</div></div>
<br>______________________________<wbr>_________________<br>
Users mailing list<br>
<a href="mailto:Users@ovirt.org">Users@ovirt.org</a><br>
<a href="http://lists.ovirt.org/mailman/listinfo/users" rel="noreferrer" target="_blank">http://lists.ovirt.org/<wbr>mailman/listinfo/users</a><br>
<br></blockquote></div></div>