Change in vdsm[master]: image: use qemu-img convert to copy internal volumes
Nir Soffer has posted comments on this change.
Change subject: image: use qemu-img convert to copy internal volumes
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Patch Set 5:
(1 comment)
http://gerrit.ovirt.org/#/c/33355/5//COMMIT_MSG
Commit Message:
Line 39:
Line 40: - dd 2Gb data volume on file domain: 79.02s +-7.44s
Line 41: - qemu-img 2Gb data volume on file domain: 56.92s +-12.37s
Line 42:
Line 43: All the volumes contained the same (u)random data.
The random data is the worst case. In the other cases qemu-img will
always
Can you add the missing info added in your replies to the commit message?
Line 44:
Line 45: [1] here dd pays the price of having to copy the entire chunk of
Line 46: allocated space (3Gb vs 2Gb of real data). Anyway even when
Line 47: normalized to the same amount of data it's still slower.
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Gerrit-MessageType: comment
Gerrit-Change-Id: I1c740d88d52ca678d6c02d0ea500d2459c26560c
Gerrit-PatchSet: 5
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Federico Simoncelli <fsimonce(a)redhat.com>
Gerrit-Reviewer: Adam Litke <alitke(a)redhat.com>
Gerrit-Reviewer: Allon Mureinik <amureini(a)redhat.com>
Gerrit-Reviewer: Dan Kenigsberg <danken(a)redhat.com>
Gerrit-Reviewer: Federico Simoncelli <fsimonce(a)redhat.com>
Gerrit-Reviewer: Francesco Romani <fromani(a)redhat.com>
Gerrit-Reviewer: Nir Soffer <nsoffer(a)redhat.com>
Gerrit-Reviewer: automation(a)ovirt.org
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