yes + 1xssd cache
NAME STATE READ WRITE CKSUM tank ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 scsi-35000cca22be96bed ONLINE 0 0 0 scsi-35000cca22bc5a20e ONLINE 0 0 0 scsi-35000cca22bc515ee ONLINE 0 0 0 ata-Hitachi_HUS724030ALE640_PK2A31PAG9VJXW ONLINE 0 0 0 scsi-35000cca22bc1f9cf ONLINE 0 0 0 scsi-35000cca22be68899 ONLINE 0 0 0 scsi-35000cca22bc58e1b ONLINE 0 0 0 scsi-35000cca22bc4dc6b ONLINE 0 0 0 scsi-35000cca22bc394ee ONLINE 0 0 0 scsi-35000cca22bc10d97 ONLINE 0 0 0 scsi-35000cca22bc605d1 ONLINE 0 0 0 scsi-35000cca22bc412bf ONLINE 0 0 0 scsi-35000cca22bc3f9ad ONLINE 0 0 0 scsi-35000cca22bc53004 ONLINE 0 0 0 scsi-35000cca22bc5b8e2 ONLINE 0 0 0 scsi-35000cca22bc3beb3 ONLINE 0 0 0 cache sdc ONLINE 0 0 0 On Thu, Oct 23, 2014 at 10:57 AM, Karli Sjöberg <karli.sjob...@slu.se> wrote: > On Thu, 2014-10-23 at 10:11 +0200, Arman Khalatyan wrote: > > > > ---------- Forwarded message ---------- > > From: Arman Khalatyan <arm2...@gmail.com> > > Date: Thu, Oct 23, 2014 at 10:11 AM > > Subject: Re: [ovirt-users] Are there some general strategyhow to Iscsi > > strorage domain? > > To: Trey Dockendorf <treyd...@gmail.com> > > > > > > Thank you Trey for sharing your setup. > > > > I have also one test system with zvol exported with iscsi over 10G. > > Unfortunately the difference in performance of zfs over raid > > controller is huge, particularly where VM running mysql. I did not try > > HBAs yet, I have only LSI/Adaptec/Areca RaidControllers they dont have > > IT mode. Maybe that can be the reason. > > > > For sure always one need to find the sweet edge between performance > > and reliability. > > > > Just for comparison with yours I get on random IO: > > zvol/16Disks/Raid2/tgtd/iscsi/10G-> on VM multiple rsync - > > ~100-150MB/s, Same HW but disks with Areca RAID6 - 650MB/s stable > > even more in some cases. > > Did you have separate log devices attached to the pool? > > The pool´s name was '16Disks'. Did you have 16 disks in one radiz2 vdev? > > /K > > > > > The best performance I got on FDR iser-> > > 80% of bare metal performance: 1500MB/s but ovirt goes mad claiming > > that Network and Disk devices are saturated. My VM goes time by time > > to paused state. > > It is due to that the Ovirt treating all ib devices as 10Gbit > > cards(in terms of speed).:( > > > > > > > > > > > > > > On Thu, Oct 23, 2014 at 8:30 AM, Trey Dockendorf <treyd...@gmail.com> > > wrote: > > Not sure if it's a solution for you, but ZFS. My domains are > > all ZFS (using ZFS on Linux in EL6.5) and my backup server > > receives incremental snapshots from primary storage which > > includes both NFS exports and iSCSI. ZFS makes creating block > > devices for iSCSI very easy, and they are included in snapshot > > replication. The replication is not HA but disaster recovery > > and off site. > > > > I've hit 300MB/s using ZFS send over IPoIB on my DDR fabric, > > which isn't amazing but not terrible for an old DDR fabric. > > > > ZFS is probably not an easy solution as requires rebuilding > > your storage, but maybe for future use or other readers it > > will give some useful ideas. > > > > - Trey > > > > On Oct 22, 2014 11:56 AM, "Arman Khalatyan" > > <arm2...@gmail.com> wrote: > > > > Hi, > > I have 2x40TB domains each are exported with > > iser/iscsi with ib and 10Gb interfaces. > > > > For sure they are RAID6 storage little bit save on > > failure. > > But I was wondered if any way to backup those domains. > > particularly master one. > > > > > > I was thinking somehow DRBD based replication, with > > lvm snapshots etc. But it looks like overkill. > > > > Will be nice somehow to deploy replicated/HA Master > > domain with ability to backp on tapes as well. > > > > > > Any ideas are welcome. > > > > Thanks, > > > > Arman. > > > > > > > > _______________________________________________ > > Users mailing list > > Users@ovirt.org > > http://lists.ovirt.org/mailman/listinfo/users > > > > > > > > > > > > > > -- > > Med Vänliga Hälsningar > > > ------------------------------------------------------------------------------- > Karli Sjöberg > Swedish University of Agricultural Sciences Box 7079 (Visiting Address > Kronåsvägen 8) > S-750 07 Uppsala, Sweden > Phone: +46-(0)18-67 15 66 > karli.sjob...@slu.se >
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users