Nir Soffer has posted comments on this change.

Change subject: core: Expose API for qemuimg commit
......................................................................


Patch Set 6:

(3 comments)

https://gerrit.ovirt.org/#/c/64222/6/lib/vdsm/qemuimg.py
File lib/vdsm/qemuimg.py:

Line 186: 
Line 187: 
Line 188: def commit(top, topFormat, base=None):
Line 189:     cmd = [_qemuimg.cmd, "commit", "-p", "-t", "none"]
Line 190:     # For simplicity, we always run commit in the working directory.
in the image directory
Line 191:     workdir = os.path.dirname(top)
Line 192: 
Line 193:     if base:
Line 194:         cmd.extend(("-b", base))


Line 196:         # If base volume is not provided, qemuimg commit will empty 
the top
Line 197:         # volume after the operation has succeeded. Providing '-d' 
option
Line 198:         # will cause qemuimg commit not to empty the top volume. Note 
that
Line 199:         # if a backing chain is provided, i.e. a base volume is 
provided,
Line 200:         # '-d' is always implied.
See my comment about this comment in previous version.
Line 201:         cmd.append("-d")
Line 202: 
Line 203:     cmd.extend(("-f", topFormat))
Line 204: 


Line 202: 
Line 203:     cmd.extend(("-f", topFormat))
Line 204: 
Line 205:     cmd.append(top)
Line 206: 
We use workdir only here, so better create it just before we use it. Smaller 
scope leave no place for bugs.
Line 207:     return QemuImgOperation(cmd, cwd=workdir)
Line 208: 
Line 209: 
Line 210: class QemuImgOperation(object):


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Gerrit-MessageType: comment
Gerrit-Change-Id: If7a13be40541fb268541bd8614a642263b96b487
Gerrit-PatchSet: 6
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Ala Hino <ah...@redhat.com>
Gerrit-Reviewer: Ala Hino <ah...@redhat.com>
Gerrit-Reviewer: Allon Mureinik <amure...@redhat.com>
Gerrit-Reviewer: Jenkins CI
Gerrit-Reviewer: Nir Soffer <nsof...@redhat.com>
Gerrit-Reviewer: gerrit-hooks <automat...@ovirt.org>
Gerrit-HasComments: Yes
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