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[Qemu-devel] qcow2 corruption - seems to be fixed in kvm-85 and later :-
[Qemu-devel] qcow2 corruption - seems to be fixed in kvm-85 and later :-)
Sun, 9 Aug 2009 10:19:43 +0100
Sometimes it's nice to find a mail with good news.
A while back I reported corruption with qcow2, with the subject
"qcow2 corruption observed, fixed by reverting old change".
I'd noticed that kvm-83 was corrupting a Windows 2k disk image, which
was failing to boot, blue screening quite early.
I found there was a qcow2 bug introduced from kvm-72 to kvm-73, and
another from kvm-76 to kvm-77. Reverting both fixed this symptom.
In order to check the bug later, I kept a copy of the disk image which
It still crashes with kvm-84. The release notes indicate there were
some qcow2 fixes in that version; they were not enough to fix this
There were more qcow2 fixes in kvm-85.
Happily, I can now report that kvm-85 and kvm-88 both boot this image
with no apparent problems, and I will be deleting this junk disk image
now that I'm confident no further testing is required :-)
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Jamie Lokier <=