[ovirt-users] Re: Backup to tape
Hi, thanks for the links. We'll check. We already have snapshoting at the iSCSI storage array level (Compellent), together with replication between storage arrays. We have online a rolling 7 days snapshots + replicats. Of course, these are inconsistent snapshots. But from the numerous tests we've done during the past 10 years (in the context of Oracle VM) we never ever bumped into a VM that would not restart from what is a crash, from the VM point of view. If it occurs, we can try with the day before . We have online a rolling 7 days snapshots + replicats. Of course we'll consider synchronising oVirt snapshots with Storage replication and snapshot. Mounting a storage array snapshot and pipe dd over ssh to restore a VM is not a big deal and we don't feel the need of an additional product for that. I've tested the following : - Activate source and destination partitions Source : lvchange -ay 337efd74-b261-4855-b78c-5b28943df889/a01f9f37-9fe9-43b4-88e6-c2eb9470295e Destination : lvchange -ay 337efd74-b261-4855-b78c-5b28943df889/a01f9f37-9fe9-43b4-88e6-c2eb9470295e - Restore the partition dd if=/dev/337efd74-b261-4855-b78c-5b28943df889/a01f9f37-9fe9-43b4-88e6-c2eb9470295e bs=1M | ssh 192.168.235.218 dd of=/dev/337efd74-b261-4855-b78c-5b28943df889/a01f9f37-9fe9-43b4-88e6-c2eb9470295e bs=1M status=progress conv=sparse - deactivate the destination lvchange -an 337efd74-b261-4855-b78c-5b28943df889/a01f9f37-9fe9-43b4-88e6-c2eb9470295e Part of Disater Recovery Plan, we also need offline backups, to tape. Up to now we weekly tar the img files, taken from a storage array snapshot, to a LTO, and voila. Now Working with LVM partition, dd seems appropriate, except that we are loosing granularity. We'll backup everything and it'll take more time. I've tested the following and it seems OK to backup to tape an entire iSCSI LUN dd if=/dev/mapper/36000d310012f4a00021d of=/dev/nst0 bs=1M status=progress I was just wondering if conv=sparse at the device level (iSCSI LUN) may break things or not. ___ 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/C5BUMNRQH3X6P3TM7UOHQ2ZAYCJ3HKWI/
[ovirt-users] Re: Backup to tape
Hiya, The API in oVirt engine actually supports creating snapshots etc. for backups. Check out github for scripts, i.e.: https://github.com/luisperezmarin/oVirtVMBackup And there are others. There is also a commercial solution, Storware vProtect: https://storware.eu/products/vprotect/ And as far as backup systems go, bareos(open source) is an ok solution, and it also support oVirt: https://www.bareos.com/ HTH /tony dupar...@esrf.fr wrote: > Hi, > > Part of our Disaster Recovery Plan we do tape backup. > > Our previous infrastructure was Oracle VM and VMs fisk were files (.img) we > could apply filters to our tar and backup to tape only required files. > > Now preparing the migration to Oracle flavor of oVirt (OLVM). > VMs disks are LVM partitions, within an iSCSI LUNs. > > I've tested "dd" to backup the entire iSCSI LUN to the tape. Seems OK > ,providing the right block size we achieve reasonable performances. > Though I don't quite see how to have that granular backup we had, in a simple > manner, which a goal too. > > Although there is compression at the LTO level, the dd conv=sparse parameter > may speed-up things. To be tested. > I'm just wondering if conv=sparse may breaks things at the LVM / qcow2 > containers ? > > > > > ___ > 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/5XPQHPXBANCXUAU62LE2UMZJRZZ7JH76/ > -- Tony Albers - Systems Architect - Data Department, Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark Tel: +45 2566 2383 - CVR/SE: 2898 8842 - EAN: 5798000792142 ___ 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/VMVSO76BMHPNWH5WPCJLJHSGXBNV7COB/
