| 2013-06-11 14:28:01 |
Chris J Arges |
bug |
|
|
added bug |
| 2013-06-11 14:28:17 |
Chris J Arges |
nominated for series |
|
Ubuntu Precise |
|
| 2013-06-11 14:28:17 |
Chris J Arges |
bug task added |
|
qemu-kvm (Ubuntu Precise) |
|
| 2013-06-11 14:28:17 |
Chris J Arges |
nominated for series |
|
Ubuntu Quantal |
|
| 2013-06-11 14:28:17 |
Chris J Arges |
bug task added |
|
qemu-kvm (Ubuntu Quantal) |
|
| 2013-06-11 14:28:25 |
Chris J Arges |
qemu-kvm (Ubuntu Precise): importance |
Undecided |
High |
|
| 2013-06-11 14:28:27 |
Chris J Arges |
qemu-kvm (Ubuntu): importance |
High |
Undecided |
|
| 2013-06-11 14:28:30 |
Chris J Arges |
qemu-kvm (Ubuntu): status |
New |
Fix Released |
|
| 2013-06-11 14:28:32 |
Chris J Arges |
qemu-kvm (Ubuntu Quantal): status |
New |
Fix Released |
|
| 2013-06-11 14:29:48 |
Chris J Arges |
description |
When using io_perf corruption can be detected when using qemu-kvm-1.0.
This affects the qemu-kvm version in Precise, but is fixed in Quantal and beyond.
It is expected that running the test case results in no disk corruption; however we detect corruption on Precise.
Running git bisect on this test finds that commit 68d100e905453ebbeea8e915f4f18a2bd4339fe8 introduced the problem between v0.15.0 and v1.0.
Running git bisect in reverse finds that commit b7ab0fea37c15ca9e249c42c46f5c48fd1a0943c fixes the issue between v1.1.2 and v1.2.0.
However, b7ab0fea cannot be easily backported to v1.0 and 68d100e9 is a large change to revert. However, both changes seem to indicate that the problem lies in the qcow2 parts of the code.
bug 1040033 seems to be a related issue. |
When using io_perf corruption can be detected when using qemu-kvm-1.0.
A test case can be downloaded here:
http://people.canonical.com/~arges/lp1189926/lnv-382.tgz
Extract the contents and run ./create-disk, then ./test-kvm to test the currently installed KVM. Keep in mind that 100GB+ of disk is required to run the test.
This affects the qemu-kvm version in Precise, but is fixed in Quantal and beyond.
It is expected that running the test case results in no disk corruption; however we detect corruption on Precise.
Running git bisect on this test finds that commit 68d100e905453ebbeea8e915f4f18a2bd4339fe8 introduced the problem between v0.15.0 and v1.0.
Running git bisect in reverse finds that commit b7ab0fea37c15ca9e249c42c46f5c48fd1a0943c fixes the issue between v1.1.2 and v1.2.0.
However, b7ab0fea cannot be easily backported to v1.0 and 68d100e9 is a large change to revert. However, both changes seem to indicate that the problem lies in the qcow2 parts of the code.
bug 1040033 seems to be a related issue. |
|
| 2013-06-11 15:13:27 |
Serge Hallyn |
qemu-kvm (Ubuntu Precise): status |
New |
Triaged |
|
| 2013-06-11 15:13:47 |
Serge Hallyn |
qemu-kvm (Ubuntu Quantal): importance |
Undecided |
High |
|
| 2013-06-12 16:36:36 |
Chris J Arges |
qemu-kvm (Ubuntu Precise): assignee |
|
Chris J Arges (arges) |
|
| 2013-06-12 16:36:51 |
Chris J Arges |
qemu-kvm (Ubuntu Precise): status |
Triaged |
In Progress |
|
| 2013-06-12 18:09:31 |
Chris J Arges |
attachment added |
|
0001-qcow2-Simplify-count_cow_clusters.patch https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1189926/+attachment/3701602/+files/0001-qcow2-Simplify-count_cow_clusters.patch |
|
| 2013-06-12 18:46:45 |
Chris J Arges |
description |
When using io_perf corruption can be detected when using qemu-kvm-1.0.
A test case can be downloaded here:
http://people.canonical.com/~arges/lp1189926/lnv-382.tgz
Extract the contents and run ./create-disk, then ./test-kvm to test the currently installed KVM. Keep in mind that 100GB+ of disk is required to run the test.
This affects the qemu-kvm version in Precise, but is fixed in Quantal and beyond.
It is expected that running the test case results in no disk corruption; however we detect corruption on Precise.
Running git bisect on this test finds that commit 68d100e905453ebbeea8e915f4f18a2bd4339fe8 introduced the problem between v0.15.0 and v1.0.
Running git bisect in reverse finds that commit b7ab0fea37c15ca9e249c42c46f5c48fd1a0943c fixes the issue between v1.1.2 and v1.2.0.
However, b7ab0fea cannot be easily backported to v1.0 and 68d100e9 is a large change to revert. However, both changes seem to indicate that the problem lies in the qcow2 parts of the code.
bug 1040033 seems to be a related issue. |
[Impact]
When using qemu-kvm-1.0 occasionally qcow2 disks will be corrupted.
[Test Case]
A test case can be downloaded here:
http://people.canonical.com/~arges/lp1189926/lnv-382.tgz
Extract the contents and run ./create-disk, then ./test-kvm to test the currently installed KVM. Keep in mind that 100GB+ of disk is required to run the test.
[Regression Potential]
The patch is a backport of commit 143550a83ef4eef86a847d00023d148e1f59f743 upstream, which changes the way that the number of available clusters are counted. While the original patch has assumptions that certain functions are available, the backport had to change these to be able to apply to v1.0.
--
When using io_perf corruption can be detected when using qemu-kvm-1.0.
A test case can be downloaded here:
http://people.canonical.com/~arges/lp1189926/lnv-382.tgz
Extract the contents and run ./create-disk, then ./test-kvm to test the currently installed KVM. Keep in mind that 100GB+ of disk is required to run the test.
This affects the qemu-kvm version in Precise, but is fixed in Quantal and beyond.
It is expected that running the test case results in no disk corruption; however we detect corruption on Precise.
Running git bisect on this test finds that commit 68d100e905453ebbeea8e915f4f18a2bd4339fe8 introduced the problem between v0.15.0 and v1.0.
Running git bisect in reverse finds that commit b7ab0fea37c15ca9e249c42c46f5c48fd1a0943c fixes the issue between v1.1.2 and v1.2.0.
However, b7ab0fea cannot be easily backported to v1.0 and 68d100e9 is a large change to revert. However, both changes seem to indicate that the problem lies in the qcow2 parts of the code.
bug 1040033 seems to be a related issue. |
|
| 2013-06-12 18:50:45 |
Chris J Arges |
attachment added |
|
lp1189926-precise.debdiff https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1189926/+attachment/3701638/+files/lp1189926-precise.debdiff |
|
| 2013-06-12 18:50:59 |
Chris J Arges |
bug |
|
|
added subscriber Ubuntu Stable Release Updates Team |
| 2013-06-12 18:51:08 |
Chris J Arges |
bug |
|
|
added subscriber Ubuntu Sponsors Team |
| 2013-06-12 19:20:34 |
Adam Conrad |
qemu-kvm (Ubuntu Precise): status |
In Progress |
Fix Committed |
|
| 2013-06-12 19:20:37 |
Adam Conrad |
bug |
|
|
added subscriber SRU Verification |
| 2013-06-12 19:20:46 |
Adam Conrad |
tags |
|
verification-needed |
|
| 2013-06-13 12:55:53 |
Dmitry Shachnev |
removed subscriber Ubuntu Sponsors Team |
|
|
|
| 2013-06-14 21:32:27 |
Chris J Arges |
attachment added |
|
lp1189926_precise_v2.debdiff https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1189926/+attachment/3703739/+files/lp1189926_precise_v2.debdiff |
|
| 2013-06-15 13:41:28 |
Mark Russell |
bug |
|
|
added subscriber Mark Russell |
| 2013-06-17 13:53:34 |
Chris J Arges |
attachment added |
|
lp1189926_precise_v3.debdiff https://bugs.launchpad.net/ubuntu/+source/qemu-kvm/+bug/1189926/+attachment/3705648/+files/lp1189926_precise_v3.debdiff |
|
| 2013-06-27 18:25:25 |
Serge Hallyn |
tags |
verification-needed |
verification-failed |
|
| 2013-07-08 15:04:24 |
Clint Byrum |
tags |
verification-failed |
|
|
| 2013-07-08 15:04:26 |
Clint Byrum |
tags |
|
verification-needed |
|
| 2013-07-08 21:23:33 |
Chris J Arges |
bug |
|
|
added subscriber Sustaining Engineering |
| 2013-07-10 17:20:03 |
Chris J Arges |
tags |
verification-needed |
verification-done |
|
| 2013-07-16 15:33:20 |
Launchpad Janitor |
qemu-kvm (Ubuntu Precise): status |
Fix Committed |
Fix Released |
|
| 2013-07-16 15:33:27 |
Colin Watson |
removed subscriber Ubuntu Stable Release Updates Team |
|
|
|
| 2014-02-07 16:05:47 |
Curtis Hovey |
removed subscriber Registry Administrators |
|
|
|
