Re: VM Data corruption shortly after Luminous Upgrade

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Are your QEMU VMs using a different CephX user than client.admin? If so, can you double-check your caps to ensure that the QEMU user can blacklist? See step 6 in the upgrade instructions [1]. The fact that "rbd resize" fixed something hints that your VMs had hard-crashed with the exclusive lock left in the locked position and QEMU wasn't able to break the lock when the VMs were restarted.

[1] http://docs.ceph.com/docs/master/release-notes/#upgrade-from-jewel-or-kraken  

On Wed, Nov 8, 2017 at 10:29 AM, James Forde <jimf@xxxxxxxxx> wrote:

Title probably should have read “Ceph Data corruption shortly after Luminous Upgrade”

 

Problem seems to have been sorted out. Still not sure why original problem other than Upgrade latency?, or mgr errors?

After I resolved the boot problem I attempted to reproduce error, but was unsuccessful which is good. HEALTH_OK

 

Anyway, to future users running into Windows "Unmountable Boot Volume", or CentOS7 boot to emergency mode, HERE IS SOLUTION.

 

Get rbd image size and increase by 1GB and restart VM. That’s it. All VM’s booted right up after increasing rbd image by 1024MB. Takes just a couple of seconds.

 

 

Rbd info vmtest

Rbd image ‘vmtest’:

Size 20480 MB

 

Rbd resize –image vmtest –size 21504

 

 

Rbd info vmtest

Rbd image ‘vmtest’:

Size 21504 MB

 

 

Good luck

 


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--
Jason
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