[ovirt-users] Ovirt/Gluster

[Ramesh Nachimuthu]

+ Ravi from gluster.

Regards,
Ramesh

----- Original Message -----
From: "Sander Hoentjen" <sander at hoentjen.eu>
To: users at ovirt.org
Sent: Tuesday, August 18, 2015 3:30:35 PM
Subject: [ovirt-users] Ovirt/Gluster

Hi,

We are looking for some easy to manage self contained VM hosting. Ovirt 
with GlusterFS seems to fit that bill perfectly. I installed it and then 
starting kicking the tires. First results looked promising, but now I 
can get a VM to pause indefinitely fairly easy:

My setup is 3 hosts that are in a Virt and Gluster cluster. Gluster is 
setup as replica-3. The gluster export is used as the storage domain for 
the VM's.

Now when I start the VM all is good, performance is good enough so we 
are happy. I then start bonnie++ to generate some load. I have a VM 
running on host 1, host 2 is SPM and all 3 VM's are seeing some network 
traffic courtesy of gluster.

Now, for fun, suddenly the network on host3 goes bad (iptables -I OUTPUT 
-m statistic --mode random --probability 0.75 -j REJECT).
Some time later I see the guest has a small "hickup", I'm guessing that 
is when gluster decides host 3 is not allowed to play anymore. No big 
deal anyway.
After a while 25% of packages just isn't good enough for Ovirt anymore, 
so the host will be fenced. After a reboot *sometimes* the VM will be 
paused, and even after the gluster self-heal is complete it can not be 
unpaused, has to be restarted.

Is there anything I can do to prevent the VM from being paused?

Regards,
Sander

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