Public bug reported:
Binary package hint: evms
For several releases the Ubuntu kernel has been carrying around a patch
that allows evms/lvm to interact more easily with block devices.
The basic idea of the patch is to revert some stricter locking on
devices so that evms can claim to be handling a device, while still
allowing userspace to access partitions without using evms.
This is a bad thing, mainly because it means I can mount /dev/sda1 even
though evms is using it, or using the entire of /dev/sda.
However, we kept this patch because it was easiest, and kept some things
from breaking. I'm not prepared to continue this any longer. We need to
address the problem well before gutsy+1 (most likely the next LTS).
Aside from the odd use case above, which users should expect to break,
normal operations are breaking as well. I have a system with 4 scsi
drives, none of them being managed by evms or lvm, and yet I cannot
mount the partitions on them after evms starts up. I had to explicitly
exclude things in /etc/evms.conf.
So either the solution is we switch to using evms for everything, or we
teach evms to not be so broad in the devices it claims. by default.
** Affects: evms (Ubuntu)
Importance: Critical
Assignee: Ubuntu Kernel Team
Status: Confirmed
** Changed in: evms (Ubuntu)
Importance: Undecided => Critical
Assignee: (unassigned) => Ubuntu Kernel Team
Status: Unconfirmed => Confirmed
Target: None => ubuntu-7.10
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evms blocks access to disk devices
https://bugs.launchpad.net/bugs/109320
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