Re: Fail of one brick lead to crash VMs

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+ Pranith

In the meantime, can you please provide the logs of all the gluster server machines  and the client machines?

Logs can be found in /var/log/glusterfs directory.

Regards,
Raghavendra

On Mon, Feb 8, 2016 at 9:20 AM, Dominique Roux <dominique.roux@xxxxxxxxxxx> wrote:
Hi guys,

I faced a problem a week ago.
In our environment we have three servers in a quorum. The gluster volume
is spreaded over two bricks and has the type replicated.

We now, for simulating a fail of one brick, isolated one of the two
bricks with iptables, so that communication to the other two peers
wasn't possible anymore.
After that VMs (opennebula) which had I/O in this time crashed.
We stopped the glusterfsd hard (kill -9) and restarted it, what made
things work again (Certainly we also had to restart the failed VMs). But
I think this shouldn't happen. Since quorum was not reached (2/3 hosts
were still up and connected).

Here some infos of our system:
OS: CentOS Linux release 7.1.1503
Glusterfs version: glusterfs 3.7.3

gluster volume info:

Volume Name: cluster1
Type: Replicate
Volume ID:
Status: Started
Number of Bricks: 1 x 2 = 2
Transport-type: tcp
Bricks:
Brick1: srv01:/home/gluster
Brick2: srv02:/home/gluster
Options Reconfigured:
cluster.self-heal-daemon: enable
cluster.server-quorum-type: server
network.remote-dio: enable
cluster.eager-lock: enable
performance.stat-prefetch: on
performance.io-cache: off
performance.read-ahead: off
performance.quick-read: off
server.allow-insecure: on
nfs.disable: 1

Hope you can help us.

Thanks a lot.

Best regards
Dominique
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