Gluster users - Jan 2017 - Convert to Shard - Setting Guidance

I did a combination of live storage migrations (be sure to delete any snapshots
afterward if using ovirt) and shutdown, migrate, reboot. Anything that did heavy
disk use, particularly writes, was giving me trouble (pauses, crashes, reboots)
with live storage migrations so I just shut down anything else with heavy disk
writes and did them offline. Mysql servers, for example.

Note that if you?re using ovirt, partially the 3.6 series, I had to migrate the
VM to a new host after moving the disk and before erasing the snapshots.
Otherwise they?d crash when removing the snapshot, something in qemu not quite
right I imagine.

   -Darrell

> On Jan 20, 2017, at 2:49 PM, Kevin Lemonnier <lemonnierk at
ulrar.net> wrote:
> 
>> 
>> I would be interested to hear how you did this while running.  On my 
>> test setup, I have gone through the copy (rename) and it does work but 
>> like you said it took quite awhile.
> 
> I went into my proxmox web interface, selected the disk and clicked
"move" :)
> It just uses some qemu command behing the scene so you can do it even
> if you aren't using proxmox though, just need to figure out the syntax.
> 
> -- 
> Kevin Lemonnier
> PGP Fingerprint : 89A5 2283 04A0 E6E9 0111
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> Gluster-users at gluster.org
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On Mon, Jan 23, 2017 at 10:01:25AM -0600, Darrell Budic
wrote:
> I did a combination of live storage migrations (be sure to delete any
snapshots afterward if using ovirt) and shutdown, migrate, reboot. Anything that
did heavy disk use, particularly writes, was giving me trouble (pauses, crashes,
reboots) with live storage migrations so I just shut down anything else with
heavy disk writes and did them offline. Mysql servers, for example.
> 
> Note that if you?re using ovirt, partially the 3.6 series, I had to migrate
the VM to a new host after moving the disk and before erasing the snapshots.
Otherwise they?d crash when removing the snapshot, something in qemu not quite
right I imagine.
> 
All of this sounds weird, I've never had a problem like this. But I'm
not using ovirt, maybe it's a problem with that.

-- 
Kevin Lemonnier
PGP Fingerprint : 89A5 2283 04A0 E6E9 0111
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