RHBA-2008:0337 - Bug Fix Advisory

Topic

Updated device-mapper-multipath packages that fix several bugs and add
various enhancements are now available.

Description

The device-mapper-multipath packages provide tools to manage multipath
devices using the device-mapper multipath kernel module.

Bugs fixed in this update include:

• multipath now uses the directio checker instead of the readsector0

checker, to avoid hangs.

• multipath incorrectly configured Hitachi HDS SANs.
• multipath would skip lines in /etc/multipath.conf that contained

non-ascii characters.

• multipathd could lock up when all paths were down, if the root device was

multipathed and required a priority callout.

Enhancements in these updated device-mapper-multipath packages include:

• the user_friendly_names bindings file can now be specified with the

"bindings_file" option in /etc/multipath.conf.

• limit on multipathd's open file descriptors can now be increased with

the "max_fds" option in /etc/multipath.conf.

• a new path prioritizer for NetApp devices, mpath_prio_ontap, which

provides failover and failback support.

• checker functions are now able to return asynchronously, instead of

timing out.

• the dm_hw_sp hardware handler is now supported.

All users are advised to upgrade to these updated packages, which resolve
these issues and add these enhancements.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

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 - 226791 - multipath should use dm_hp_sw
• BZ - 249088 - device-mapper-multipath has wrong path for mpath_prio_hds_modular
• BZ - 355961 - [NetApp-S 5.2 bug] RHEL 5.1 root device multipathed host freezes during FCP path faults
• BZ - 357331 - bindings file location is problematic for certain configurations
• BZ - 426799 - Typo in multipath.conf.redhat

CVEs

(none)

References

(none)