[Bugs] [Bug 1203739] Self-heal of sparse image files on 3-way replica "unsparsifies" the image

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1203739

SATHEESARAN <sasundar at redhat.com> changed:

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              Flags|needinfo?(sasundar at redhat.c |
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--- Comment #9 from SATHEESARAN <sasundar at redhat.com> ---
(In reply to Ravishankar N from comment #7)
> Hi Sas, I'm still unable to re-create the issue on release-3.7 branch with
> the steps mentioned in comment #5. I see that in the replaced brick, the
> file is still sparse. Can you try to recreate this and share the setup with
> me? Thanks!

Hi Ravi,

I have tested with glusterfs 3.7.6 on RHEL-7
(http://download.gluster.org/pub/gluster/glusterfs/3.7/3.7.6/EPEL.repo/epel-7Server/x86_64/
) and I am not facing this issue

Providing the test steps below :

1. Created a replica 3 volume and optimized it for virt-store usecase
2. Started the volume and used it as a RHEV Data Domain  ( RHEV 3.5.6 )
3. Killed one of the brick of the volume
4. Created 3 AppVMs ( Images of size -  15G, 20G, 25G respectively ) and
installed RHEL 7.2 on the App VMs
5. Brought back the killed brick ( by starting the volume with force option )
6. Triggered self-heal
7. After self-heal is completed, check the image size on all the bricks 

Observation : None of the image file on the 3 bricks, has lost sparseness
property

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