lvm snapshot causes deadlock in 2.6.35
Bug #595489 reported by
Phillip Susi
This bug affects 21 people
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Fix Released
|
Medium
|
|||
linux (Ubuntu) |
Fix Released
|
High
|
Phillip Susi | ||
Lucid |
Fix Released
|
High
|
Stefan Bader | ||
Maverick |
Fix Released
|
High
|
Phillip Susi |
Bug Description
Attempting to snapshot the root lv causes a deadlock in 2.6.35 when it suspends the root lv device to replace the table. The lvcreate -n snap -s -L 1g lv/root command hangs, can not be killed, and no further IO is possible, and the system must be hard booted with magic-sysrq.
Started with Ubuntu 2.6.35-rc3-3 kernel, then tested mainline kernels 2.6.35 rc1, rc2, and rc3 all have the issue. Mainline 2.6.34 does not have the problem. Hopefully I'll be able to do some git bisecting tonight.
tags: | added: regression-potential |
Changed in linux (Ubuntu): | |
milestone: | maverick-alpha-2 → maverick-alpha-3 |
tags: | added: patch |
description: | updated |
tags: | added: maverick |
Changed in linux (Ubuntu Lucid): | |
status: | Fix Committed → Fix Released |
status: | Fix Released → Fix Committed |
tags: |
added: verification-done removed: verification-needed |
Changed in linux: | |
status: | Unknown → Fix Released |
Changed in linux: | |
importance: | Unknown → Medium |
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Hi Phillip,
Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http:// cdimage. ubuntu. com/daily- live/current/ . If the issue remains, please run the following command from a Terminal (Applications- >Accessories- >Terminal) . It will automatically gather and attach updated debug information to this report.
apport-collect -p linux 595489
Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https:/ /wiki.ubuntu. com/KernelMainl ineBuilds . Once you've tested the upstream kernel, please remove the 'needs- upstream- testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs- upstream- testing' text. Please let us know your results.
Thanks in advance.
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