[Gluster-devel] Object Quota feature proposal for GlusterFS-3.7

Prashanth Pai ppai at redhat.com
Tue Feb 24 09:24:32 UTC 2015

Changelog logs GFID. Swift DBs need file path (acc/cont/obj format). Methods[1] to convert GFID to Path are not stable and also expensive. And there's no way to know which files were deleted even if we know GFID[2].

[1] https://github.com/gluster/glusterfs/blob/master/doc/debugging/gfid-to-path.md
[2] http://review.gluster.org/8376

 -Prashanth Pai

----- Original Message -----
From: "Vijay Bellur" <vbellur at redhat.com>
To: "Prashanth Pai" <ppai at redhat.com>, "Luis Pabon" <lpabon at redhat.com>
Cc: "gluster-devel at gluster.org >> Gluster Devel" <gluster-devel at gluster.org>
Sent: Tuesday, February 24, 2015 12:41:07 PM
Subject: Re: [Gluster-devel] Object Quota feature proposal for GlusterFS-3.7

On 02/24/2015 10:54 AM, Prashanth Pai wrote:
> Hi Luis,
> Currently, even with storage policies, there is no mechanism to update the container DBs with details of files created/modified/deleted over filesystem interface.
> Hence a GET on a container would list objects that may or may not exist on disk. Also the metadata of container (bytes and object count) could be outdated.
> We need a mechanism to detect change in GlusterFS (have explored changelog and inotify, both not feasible) and then lazily update Swift DBs so that the container listing and metadata would eventually look right.

What were the problems encountered while trying to use changelog?


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