RHBA-2010:0368 - Bug Fix Advisory

Topic

An updated lvm2 package that fixes various bugs is now available.

Description

The lvm2 packages contain support for Logical Volume Management (LVM).

This updated lvm2 package includes fixes for the following bugs:

• updating the Red Hat Enterprise Linux 5.5 kernel package while clvmd (the

cluster LVM daemon) was running caused LVM commands to subsequently fail, with
the result that it was not possible to boot into the new kernel, though booting
into an older kernel worked as expected. This issue was caused by an
incompatible flag in the cluster lock request. This update properly masks this
flag so that LVM is again able to communicate with the running clvmd daemon.
With this update, LVM works as expected after installing the Red Hat Enterprise
Linux 5.5 kernel.

Important: a workaround for this issue was described in the Red Hat
Knowledgebase article linked to in the References. This workaround is not needed
after installing this lvm2 update. (BZ#582218)

• running certain LVM commands, such as "vgremove", simultaneously on two

different volume groups occasionally caused one of the commands to fail. This
was caused by a race condition that resulted in the following error message:

flock failed: Resource temporarily unavailable
Can't get lock for orphan PVs

This update includes a fix for the race condition that ensures that commands can
be run in parallel without failure. (BZ#582232)

All users are advised to upgrade to this updated package, which resolves these
issues.

Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

• Red Hat Enterprise Linux Server 5 x86_64
• Red Hat Enterprise Linux Server 5 ia64
• Red Hat Enterprise Linux Server 5 i386
• Red Hat Enterprise Linux Workstation 5 x86_64
• Red Hat Enterprise Linux Workstation 5 i386
• Red Hat Enterprise Linux Desktop 5 x86_64
• Red Hat Enterprise Linux Desktop 5 i386
• Red Hat Enterprise Linux for IBM z Systems 5 s390x
• Red Hat Enterprise Linux for Power, big endian 5 ppc
• Red Hat Enterprise Linux Server from RHUI 5 x86_64
• Red Hat Enterprise Linux Server from RHUI 5 i386

Fixes

• BZ - 582218 - mkinitrd omits /bin/lvm and /etc/lvm/lvm.conf from the initramfs if there is a clustered logical volume active when it is run
• BZ - 582232 - vgremove does not take blocking lock and fails if run concurrently with other lvm commands

CVEs

(none)

References

• http://kbase.redhat.com/faq/docs/DOC-29361