Nir Soffer has posted comments on this change.

Change subject: storage: Add inplace virt-sparsify support
......................................................................


Patch Set 13:

From the discussion with Richard and Kevin, we learned that we can use this 
only on the top volume in an image. We need to validate that the volume 
requested by the caller is the leaf volume, and fail the request if not.

We also must prevent usage of this verb on a template image used by any other 
image. Doing this check safely may be hard since it can be done only on the spm.

Finally we must protect the image during the operation using volume generation 
and mark the image as illegal, so another host cannot consume this image while 
we are sparsifying it. See the latest version of copy_data for the details how 
it is done.

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Gerrit-MessageType: comment
Gerrit-Change-Id: I6ac2bb1fbd2acbe0fc47694d17313c6ccd01a227
Gerrit-PatchSet: 13
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Shmuel Leib Melamud <smela...@redhat.com>
Gerrit-Reviewer: Adam Litke <ali...@redhat.com>
Gerrit-Reviewer: Allon Mureinik <amure...@redhat.com>
Gerrit-Reviewer: Francesco Romani <from...@redhat.com>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Maor Lipchuk <mlipc...@redhat.com>
Gerrit-Reviewer: Nir Soffer <nsof...@redhat.com>
Gerrit-Reviewer: Piotr Kliczewski <piotr.kliczew...@gmail.com>
Gerrit-Reviewer: Shahar Havivi <shav...@redhat.com>
Gerrit-Reviewer: Shmuel Leib Melamud <smela...@redhat.com>
Gerrit-Reviewer: Shmuel Melamud <smela...@redhat.com>
Gerrit-Reviewer: Yaniv Kaul <yk...@redhat.com>
Gerrit-Reviewer: gerrit-hooks <automat...@ovirt.org>
Gerrit-HasComments: No
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