On 03/09/17 21:23, Russell Coker via luv-main wrote:
> It turned out to be BTRFS mis-managing free space, deciding there was
> none left, and going into read-only mode. The QEMU/KVM server blocked
> on disk IO and paused the virtual machines, which meant that they
> couldn't even respond to pings.
>
>
>
> I've setup a cron job to run a weekly balance on the BTRFS filesystem
> which will prevent this happening again. I've seen similar things in
> the past but didn't expect them in this case because the filesystem is
> only 50% full.
>
Ouch! Well worth knowing about that risk. Thanks again, Russell!
Cheers,
Andrew
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