RHBA-2006:0099 - Bug Fix Advisory

Topic

Updated device-mapper packages that include various bug fixes and
enhancements are now available.

Description

The device-mapper packages provide a library required by logical volume
management utilities such as LVM2 and dmraid.

These packages include the following bug fixes and enhancements:

• Fixes a segmentation fault that can occur if dmsetup is called with

invalid parameters.

• Adds a new parameter --tree to 'dmsetup ls' that displays the

dependencies between devices as a tree.

• Adds the parameter '--nolockfs' to 'dmsetup suspend' which avoids

flushing file system metadata.

• If the kernel reports that the buffer supplied with an ioctl is too small

to hold the output requested, libdevmapper now automatically increases the
buffer size and repeats the request.

• Moves numerous useful LVM2 library functions into libdevmapper so they

are available to other applications. See the libdevmapper.h header file
for more details.

• dm_format_dev() now drops leading zeros.
• Implements some higher-level functions in libdevmapper as useful wrappers

around the existing dm_task-based functions. The new lvm2 package uses
these new functions.

All users of device-mapper should upgrade to these updated packages, which
resolve these issues and include these enhancements.

Solution

Before applying this update, make sure that all previously-released
errata relevant to your system have been applied. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc

Fixes

• BZ - 164197 - dmsetup and lvm2 fail if the listing of dm devices exceeds 16k
• BZ - 164959 - CRM# 619256 RHEL4 lvm2 memory allocation failures locking up system with snapshots
• BZ - 166284 - LTC17444-dmsetup segmentation fault when trying to use invalid command line option [PATCH]
• BZ - 176443 - regression: clvmd with gulm gets stuck in infinite loop
• BZ - 176861 - 'dmsetup version' should display driver version and not fail

CVEs

(none)

References

(none)