hey, what are you using for zfs? get an arc status and show please 2017-03-02 9:57 GMT-03:00 Arman Khalatyan <arm2arm@gmail.com>:
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.frediani@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
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