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.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
hare@xxxxxxx +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
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