Re: Hole punch support

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On Thu, Nov 24, 2016 at 03:58:01PM +0000, Ankireddypalle Reddy wrote:
> Hi,
>       Gluster does not seem to be supporting hole punch support correctly. This might be a limiting factor for people switching from hardware based storage  to glusterfs for archival/backup use cases.  In these use cases hole punch support is one of the key deciding factors. I request gluster developers to expedite their efforts in this direction.

Hi Ram,

this is something we should be able to fix somehow. There is a similar
bug reported for this already:

  fallocate + punch_hole used instead of fallocate + zero_range in glfs_discard()
  https://bugzilla.redhat.com/show_bug.cgi?id=1327857

From a cursory look, libgfapi supports punching holes through the
glfs_discard() function. FUSE also has an implementation for
fallocate().

How are you testing this, and what is the behaviour you see?

Thanks,
Niels

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