This one shows if a setting differs from the defaults. As I don't know the
default (you can see it with gluster volume set help), you can check via
gluster volume get <VOLUME> cluster.lookup-optimize.
best Regards,Strahil Nikolov
On Wed, Apr 6, 2022 at 16:50, Mohamed
Roushdy<mohamedrous...@peopleintouch.com> wrote: <!--#yiv2710143779 _filtered
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Well, I think it’s not configured. Here’s the config:
Volume Name: data
Type: Replicate
Volume ID: 06cac4b9-3d6a-410b-93e6-4f876bbfcdd1
Status: Started
Snapshot Count: 0
Number of Bricks: 1 x 3 = 3
Transport-type: tcp
Bricks:
Brick1: server1:/gluster/data/brick1
Brick2: server2:/gluster/data/brick1
Brick3: server3:/gluster/data/brick1
Options Reconfigured:
features.shard-block-size: 512MB
storage.owner-gid: 36
storage.owner-uid: 36
user.cifs: off
features.shard: on
cluster.shd-wait-qlength: 10000
cluster.shd-max-threads: 8
cluster.locking-scheme: granular
cluster.data-self-heal-algorithm: full
cluster.server-quorum-type: server
cluster.quorum-type: auto
cluster.eager-lock: enable
network.remote-dio: enable
performance.low-prio-threads: 32
performance.stat-prefetch: off
performance.io-cache: off
performance.read-ahead: off
performance.quick-read: off
transport.address-family: inet
performance.readdir-ahead: on
nfs.disable: on
From: Strahil Nikolov <hunter86...@yahoo.com>
Sent: Wednesday, April 6, 2022 1:42 PM
To: Mohamed Roushdy <mohamedrous...@peopleintouch.com>; users@ovirt.org
Subject: [Ext.] Re: [ovirt-users] Re: Storage Design Question - GlusterFS
Can you check of the volume had 'cluster.lookup-optimize' enabled (on)?
Most probably it caused your problems .
For details check [1] [2]
Best Regards,
Strahil Nikolov
[1] https://access.redhat.com/solutions/5896761
[2]
https://lists.ovirt.org/archives/list/users@ovirt.org/thread/BEYIM56H2Q3PVFOHKMC5LSL5RS4VIQL4/
On Wed, Apr 6, 2022 at 10:42,mohamedrous...@peopleintouch.com
<mohamedrous...@peopleintouch.com> wrote:
Thanks a lot for your answer. The thing is, we had data lose disaster last
month, and that's why we've decided to deploy a cmmpletely new environment for
taht pirpose, and let me tell you what happened. We are using Ovirt 4.1 with
Gluster 3.8 for our production, and the cluster contains five hosts, three of
them are storage servers. I've added two more hosts, and manually via CLI (as I
couldn't do this via GUI) created a new brick on one of the newely added
nodes,and expanded the volume with the parameter "replica = 4 as it was
refused to expand without setting the replica count. The action was successful
for both the engine vol, and the data vol, however, few minutes later we've
found that the disk sizes (images) of the existing VMs got shrunk and lost all
of the data, and we had to recover from backup.. We can't afford another
downtime (another disaster I mean), that's why I'm so maticulous about what to
do next, so, is there a good guide around for the architecure and sizing?
Thank you,
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