RHBA-2007:0426 - Bug Fix Advisory

Topic

Updated mount packages that fixes various bugs are now available.

Description

The mount package contains the mount, umount, swapon, and swapoff
programs. Accessible files on your system are arranged in one big tree
or hierarchy. These files can be spread out over several devices.

The mount command attaches a filesystem on some device to your system's
file tree. The umount command detaches a filesystem from the tree. Swapon
and swapoff, respectively, specify and disable devices and files for paging
and swapping.

This release addresses the following issues:

• the mount utility used TCP to communicate with the server's portmapper,

even when a UDP mount was specified.

• mounting large numbers of NFS filesystems resulted in reserved port

exhaustion.

• "umount -l" only worked if there was no cached data waiting to be

read/written to the mount point. Due to the requirements of NFS, this
causes the umount to hang. This problem was addressed by removing the
server umount notification in umount, which is required to allow mounts to
continue functioning until processes using them have finished.

Users should upgrade to these updated packages, which resolve these issues.

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 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 235877 - umount -l should work on hung NFS mounts with cached data

CVEs

(none)

References

(none)