[ovirt-users] Replicated Glusterfs on top of ZFS

[Juan Pablo]

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 at 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 at 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 at 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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