RHBA-2013:0440 - Bug Fix Advisory

Topic

Updated mdadm packages that fix several bugs and add various enhancements are
now available for Red Hat Enterprise Linux 6.

Description

The mdadm packages contain a utility for creating, managing, and monitoring
Linux MD (multiple disk) devices.

The mdadm packages have been upgraded to upstream version 3.2.5, which provides
a number of bug fixes and enhancements over the previous version. (BZ#812358)

This update fixes the following bugs:

• While an Intel Matrix Storage Manager (IMSM) RAID volume was in the process of

a reshape, an attempt to stop all arrays could cause an IMSM RAID array to be
broken or corrupted. The underlying source code has been modified and mdadm
works as expected in the described scenario. (BZ#824815)

• This update clarifies a number of mdadm license ambiguities. (BZ#862565)
• The IMSM optional ROM (OpROM) does not support RAID volumes across more than

one controller. Previously, creating an IMSM RAID volume across more than one
controller caused data loss. With this update, creating an IMSM RAID volume on
multiple controllers is forbidden to prevent the data loss. (BZ#878810)

• Previously, it was possible to create a second RAID1 volume with the size

equal to 0. As a consequence, when resyncing the first RAID1 volume was
finished, the system became unresponsive. This update applies a patch to correct
this error and it is no longer possible to create a second RAID1 volume with the
size equal to 0. (BZ#880208)

• After turning off two disk drives of a RAID1 volume, using the "mdadm
• -detail" command caused mdadm to terminate unexpectedly with a segmentation

fault. This update applies a patch that fixes this bug. Using the "mdadm

• -detail" command now returns valid information and mdadm no longer crashes in

the described scenario. (BZ#880225)

• This update fixes the map file location in mdadm(8) man page. (BZ#820643)

Users of mdadm are advised to upgrade to these updated packages, which fix these
bugs and add these enhancements.

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
https://access.redhat.com/knowledge/articles/11258

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

CVEs

(none)

References

(none)