no, ZFS itself is not on top of lvm. only ssd was spitted by lvm for slog(10G) and cache (the rest) but in any-case the ssd does not help much on glusterfs/ovirt load it has almost 100% cache misses....:( (terrible performance compare with nfs)
On Thu, Mar 2, 2017 at 1:47 PM, FERNANDO FREDIANI <fernando.fredi...@upx.com > wrote: > Am I understanding correctly, but you have Gluster on the top of ZFS which > is on the top of LVM ? If so, why the usage of LVM was necessary ? I have > ZFS with any need of LVM. > > Fernando > > On 02/03/2017 06:19, Arman Khalatyan wrote: > > Hi, > I use 3 nodes with zfs and glusterfs. > Are there any suggestions to optimize it? > > host zfs config 4TB-HDD+250GB-SSD: > [root@clei22 ~]# zpool status > pool: zclei22 > state: ONLINE > scan: scrub repaired 0 in 0h0m with 0 errors on Tue Feb 28 14:16:07 2017 > config: > > NAME STATE READ WRITE CKSUM > zclei22 ONLINE 0 0 0 > HGST_HUS724040ALA640_PN2334PBJ4SV6T1 ONLINE 0 0 0 > logs > lv_slog ONLINE 0 0 0 > cache > lv_cache ONLINE 0 0 0 > > errors: No known data errors > > Name: > GluReplica > Volume ID: > ee686dfe-203a-4caa-a691-26353460cc48 > Volume Type: > Replicate (Arbiter) > Replica Count: > 2 + 1 > Number of Bricks: > 3 > Transport Types: > TCP, RDMA > Maximum no of snapshots: > 256 > Capacity: > 3.51 TiB total, 190.56 GiB used, 3.33 TiB free > > > _______________________________________________ > Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users > > > > _______________________________________________ > Users mailing list > Users@ovirt.org > http://lists.ovirt.org/mailman/listinfo/users > >
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