On 10/07/2012 04:44 PM, Martin Steigerwald wrote:
Plus, with respect to snapshots, isn't this going to increase a lot my
> used disk space ?
I don´t think so, but I will leave this to a developer to answer.
IIRC the defrag is not [fully] snapshot aware, so de-frag-ging a
snapshot-ted file should break the COW link.
Liu Bo is working to patch on that: see " Btrfs: use flag EXTENT_DEFRAG
for snapshot-aware defrag" dated 2012/09/17.
Please could you clarify if you are using the "autodefrag" options when
you have the performance problem ? Are you in position to to reduce the
number of snapshot from hundreds to few ?
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