[Bugs] [Bug 1246988] New: sharding - Populate the aggregated ia_size and ia_blocks before unwinding (f)setattr to upper layers

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1246988

            Bug ID: 1246988
           Summary: sharding - Populate the aggregated ia_size and
                    ia_blocks before unwinding (f)setattr to upper layers
           Product: GlusterFS
           Version: 3.7.3
         Component: sharding
          Keywords: Triaged
          Assignee: bugs at gluster.org
          Reporter: kdhananj at redhat.com
        QA Contact: bugs at gluster.org
                CC: bugs at gluster.org
        Depends On: 1246082



+++ This bug was initially created as a clone of Bug #1246082 +++

Description of problem:
Sharding translator does not aggregate ia_size and ia_blocks in the cbks of
(f)setattr. And fuse copies out poststat into the fuse output header before
writing the response to /dev/fuse. This was causing issues with OS installation
on vm images with sharded volumes.

Version-Release number of selected component (if applicable):


How reproducible:


Steps to Reproduce:
1. Create a dis-rep volume with sharding enabled and also all the options that
need to be set which are documented at
http://www.gluster.org/community/documentation/index.php/Libgfapi_with_qemu_libvirt.
2. Create a vm image on the volume.
3. Try to install (any) OS on this newly created image using virt-install CLI.
4. Open the UI on virt-manager and resume installation.
5. The application fails to recognise the virtio disk that is associated with
the image.

Actual results:


Expected results:


Additional info:

--- Additional comment from Krutika Dhananjay on 2015-07-24 02:39:44 EDT ---

http://review.gluster.org/#/c/11754/

--- Additional comment from Anand Avati on 2015-07-27 02:06:32 EDT ---

COMMIT: http://review.gluster.org/11754 committed in master by Pranith Kumar
Karampuri (pkarampu at redhat.com) 
------
commit fd296d90168002a475a9899a72a0dd1811f038ee
Author: Krutika Dhananjay <kdhananj at redhat.com>
Date:   Thu Jul 23 14:59:19 2015 +0530

    posix,shard: Fill in ia_size and ia_blocks before unwinding (f)setattr

    The shard xlator will request for size xattrs in its request and
    posix will perform xattr_fill of requested keys before unwinding
    (f)setattr.

    Change-Id: I4ec4779568be6f805724b875b1b4215787112e7f
    BUG: 1246082
    Signed-off-by: Krutika Dhananjay <kdhananj at redhat.com>
    Reviewed-on: http://review.gluster.org/11754
    Tested-by: Gluster Build System <jenkins at build.gluster.com>
    Reviewed-by: Pranith Kumar Karampuri <pkarampu at redhat.com>
    Tested-by: NetBSD Build System <jenkins at build.gluster.org>


Referenced Bugs:

https://bugzilla.redhat.com/show_bug.cgi?id=1246082
[Bug 1246082] sharding - Populate the aggregated ia_size and ia_blocks
before unwinding (f)setattr to upper layers
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