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Re: [Nbd] TRIM stuff



--On 16 September 2011 10:26:09 +0200 Wouter Verhelst <w@...112...> wrote:


So yesterday I implemented the fallocate(FALLOC_FL_PUNCH_HOLE) stuff for
NBD_CMD_TRIM. It's compile-tested, but not yet functionally tested. To
be honest, I'm not entirely sure how to test whether a file is sparse in
a particular region; anyone?


I think you can use debugfs's dump_extents command (from memory).

--
Alex Bligh
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