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(a)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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