RHBA-2010:0415 - Bug Fix Advisory

Topic

Updated device-mapper-multipath packages that fix two bugs are now
available.

Description

The device-mapper-multipath packages provide tools to manage multipath
devices by giving the device-mapper multipath kernel module instructions on
what to do, as well as by managing the creation and removal of partitions
for device-mapper devices.

This update addresses the following bug:

• During bootup, multipath was setting up queue_if_no_path on devices that asked

for it before multipathd was started. If paths to the device existed, but were
all unusable, multipath would queue all IO until multipathd started up. This
caused kpartx to hang when trying to read the partition table off the device.
The end result was that the entire machine would hang during bootup. Multipath
now does not enable queueing on newly created devices if multipathd has not
started up yet. This can be overridden with the new -q option. Multipathd will
enable queuing on the appropriate devices when it starts up. (BZ#584344)

Users are advised to upgrade to these updated device-mapper-multipath
packages, which resolve this issue.

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 - 584344 - System hangs on boot if multipath disks are in Not Ready state.

CVEs

(none)

References

(none)