Re: Suggestions for improving the block/gluster driver in QEMU

[Ravishankar N <ravishankar@xxxxxxxxxx>]

On 07/28/2016 04:43 PM, Niels de Vos wrote:

posix_discard() in gluster seems to be using fallocate() with
> FALLOC_FL_PUNCH_HOLE flag. And posix_zerofill() can be made smarter to use
> FALLOC_FL_ZERO_RANGE and fallback to writing zeroes if ZERO_RANGE is not
> supported.

Oh, nice find! I was expecting that posix_zerofill() uses fallocate()
already... Definitely something that shoud be improved too. Care to file
a bug for that?

Sent http://review.gluster.org/#/c/15037/ :-)
-Ravi

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