Niels,
Below are the two issues that I noticed and created bugs for tracking.
1) For disperse volumes hole punch is currently not supported. The support seems to be in works.
https://bugzilla.redhat.com/show_bug.cgi?id=1394298
2) For a replica/distribute volume after punching hole in the file the reported size is not correct.
You could see the description of problem in
https://bugzilla.redhat.com/show_bug.cgi?id=1398381
Thanks and Regards,
Ram
-----Original Message-----
From: Niels de Vos [mailto:ndevos@xxxxxxxxxx]
Sent: Monday, November 28, 2016 10:32 AM
To: Ankireddypalle Reddy
Cc: gluster-users@xxxxxxxxxxx; Gluster Devel (gluster-devel@xxxxxxxxxxx)
Subject: Re: [Gluster-devel] Hole punch support
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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