Re: [LSF/MM TOPIC] Thin provisioning SOFT_THRESHOLD error handling

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On Tue, Jan 29, 2013 at 12:14 AM, Hannes Reinecke <hare@xxxxxxx> wrote:
> Hi all,
>
> Thin-provisioned devices have the ability to set a 'soft threshold', which
> is triggered if the real free space for this device is beyond this mark.
>
> The intention behind this is to allow the system to induce some garbage
> collection with possibly freeing up unused space.
>
> Initially it would be possible to execute garbage collection on filesystems
> (eg for btrfs).
>
> However, as this concept applies to other areas within the kernel
> (like dm-thinp or even btrfs itself) it might be an idea to have
> a general mechanism / error handling etc in place.
>
> I would like to discuss at LSF the possible implementations
> and handling mechanism for this kind of failure scenarios.

Count me in too
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