RHBA-2007:0651 - Bug Fix Advisory

Topic

Updated nfs-utils packages that fix various bugs and add an enhancement
are now available.

Description

The nfs-utils package provides a daemon for the kernel Network File
System (NFS) server and related tools, providing a much higher level of
performance than the traditional Linux NFS server used by most users.

These updated packages fix the following bugs:

• when a Red Hat Enterprise Linux 4 NFS server directory was mounted,

mountd added entries to /var/lib/nfs/rmtab incorrectly. Running "showmount

• a" displayed mount-point entries containing hex addresses and the "*"

character. Mount points were not removed upon unmounting. mountd now stores
IP addresses rather than hostnames in rmtab. These latter can be resolved
with the new "mountd -r" option, which can be set with the 'echo
'RPCMOUNTDOPTS="-r"' >> /etc/sysconfig/nfs' command.

• "showmount -a" did not display Fully Qualified Domain Names (FQDN).
• the "mount -f" command did not update /etc/mtab.
• mounting an NFSv4 file system which did not exist resulted in a "mount

point '/mnt/directory' does not exist" error, where '/mnt/directory' is
the specified local mount point. A "No such file or directory" error is now
returned.

• a memory leak in nfs-utils causing mountd to consume a large amount

of memory on heavily utilized NFS servers has been fixed.

• nfsd started successfully even when 'RPCNFSDARGS="-T"' was configured in

"/etc/sysconfig/nfs". nfsd should fail to start as version 4 requires
TCP/IP.

• mount.nfs failed to lock "/etc/mtab" correctly.
• immediately running exportfs after restarting an NFS server could

result in inconsistencies between exportfs and the "showmount -e" command.
For example, exportfs would export a directory but showmount would not
display it.

• multiple NFS mounts of the same file system type (ie ext3) inherited the

options from the parent. For example, mounting an ext3 NFS share read-only
resulted in all other subsequent ext3 NFS shares being mounted read-only,
regardless of the mount options specified. This behavior was also apparent
in the anaconda pre-install environment.

• secure autofs NFS mounted shares failed to cleanly unmount during system

shutdown, causing numerous errors such as the following:

kernel: RPC: AUTH_GSS upcall timed out.
kernel: Please check user daemon is running!

These shares are cleanly unmounted in these updated packages.

• The "In releases of nfs-utils upto and including 1.0.0, this option was

the default..." section in the sync section of the exportfs man page has
been moved to the correct async section.

• mount.nfs allocates a socket and binds it to a reserved port, and then

passes it to the kernel which creates its own socket. On heavily utilized
NFS servers this lead to port exhaustion.

• the "service nfs status" command always had a zero (success) exit code.
• the rpcgssd, rpcidmapd, and rpcsvcgssd init scripts returned incorrect

exit codes.

• a script bug which caused a delay in shutting down an NFS server

using "service nfs shutdown" has been resolved.

• the rpc.statd daemon ran as root. The rpc.statd daemon is run as

the rpcuser in these updated packages.

• upgrading from nfs-utils-1.0.10-7.fc6.x86_64 to

nfs-utils-1.0.10-10.fc6.x86_64 when nfs is not running resulted in a
"error: %postun(nfs-utils-1.0.10-7.fc6.x86_64) scriptlet failed, exit
status 1" error.

• mount.nfs caused numerous errors and failed to mount NFS shares on 64-bit

architectures.

This update also adds the following enhancements:

• the userspace portion of NFSv4 relocation support was added.
• NFS ports were set dynamically by portmapper. Ports can statically be

configured in "/etc/sysconfig/nfs" in these updated packages.

All nfs-utils 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. 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 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 - 233903 - Incorrect description for sync in man page exports(5)
• BZ - 234543 - RFE: Set static ports for NFS
• BZ - 236823 - exportfs gives inconsistent results when run immediately after nfs service is restarted
• BZ - 239536 - Memory leak was found in nfs-utils
• BZ - 240352 - nfs-utils postuninstall scriptlet failure on upgrade
• BZ - 241015 - idmapd startup script fails when sunrpc is statically linked
• BZ - 241190 - mount.nfs errors out in nfs-utils -19.el5 on x86_64
• BZ - 243703 - Wrong init script
• BZ - 243913 - NFS Client R/O in anaconda preinstall environment
• BZ - 245376 - Errors on shutdown with kerberos NFS filesystems mounted
• BZ - 246254 - mount.nfs unnecessarily passes a socket to the kernel

CVEs

(none)

References

(none)