RHBA-2015:0508 - Bug Fix Advisory

Topic

Updated nfs-utils packages that fix several bugs and add various enhancements
are now available for Red Hat Enterprise Linux 7.

Description

The nfs-utils packages provide a daemon for the kernel Network File System (NFS)
server and related tools, which offer better performance than the traditional
and widely used Linux NFS server. These packages contain the mount.nfs,
umount.nfs, and showmount programs.

This update fixes the following bugs:

• Previously, nfs-utils did not check if the internal queue contained any

entries. Consequently, the rpc.gssd service exited without any notification when
no entries were present. With this update, nfs-utils makes the check and prints
an error message when no entries are present. (BZ#1117384)

• Previously, nfs-utils did not stop the rpc.idmapd service at the same time as

the NFS server. As a consequence, unmounting the /var/lib/nfs/rpc_pipefs/
directory failed during high-availability (HA) failovers. The problem has been
fixed, and the unmounting no longer fails during HA failovers. (BZ#1159234)

• Previously, the rpc.mountd service became unresponsive in the write() system

call when rpc.mountd received an excessive amount of requests and the read()
function was not used to read them. Consequently, NFS mounts were not created.
With this update, rpc.mountd uses the non-blocking mode on the write() system
calls. Now, rpc.mountd times out and the NFS mounts are no longer blocked.
(BZ#1163891)

In addition, this update adds the following enhancements:

• An adjustable time-out value has been added to the rpc.gssd service using the

new "-T" option. This allows rpc.gssd to handle network congestion better.
(BZ#1009528)

• This update adds a call-out feature to the rpc.statd service. The call-out is

used in situations when the client notifies the statd service that the client
rebooted. This enhancement is required for high-availability (HA) environments.
(BZ#1108105)

• This update adds descriptions on what each value of the column in the output

of the nfsiostat utility means to the nfsiostat(8) man page. (BZ#1109864)

• The systemd service upstream scripts have been implemented, providing

significant enhancements to the system performance. (BZ#1144440)

• A new "nordirplus" option has been implemented for the exportfs utility for

NFS version 3 (NFSv3). This option allows the user to disable READDIRPLUS
requests for the given NFSv3 export, and thus prevent unwanted disk access in
certain scenarios. (BZ#1161458)

Users of nfs-utils are advised to upgrade to these updated packages, which fix
these bugs and add these enhancements. After installing this update, the nfs
service will be restarted automatically.

Solution

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

For details on how to apply this update, refer to:

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

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.3 x86_64
• Red Hat Enterprise Linux Server - AUS 7.7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.6 x86_64
• Red Hat Enterprise Linux Server - AUS 7.3 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.4 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.3 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.5 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.4 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.3 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux Server from RHUI 7 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.7 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.6 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.5 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.4 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.3 x86_64
• Red Hat Enterprise Linux Server - AUS 7.4 x86_64
• Red Hat Enterprise Linux Server - TUS 7.7 x86_64
• Red Hat Enterprise Linux Server - TUS 7.6 x86_64
• Red Hat Enterprise Linux Server - TUS 7.3 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.3 x86_64

Fixes

• BZ - 1082480 - [gssd] code defects in get_servername() utils/gssd/gssd_proc.c:line220
• BZ - 1083018 - code defect support/export/hostname.c: host_pton() NULL pointer process
• BZ - 1116794 - wrong PATH in /usr/sbin/start-statd
• BZ - 1117384 - [rpc.gssd] rpc.gssd always start fail, and no enough log/message to user
• BZ - 1144440 - Upgrade to latest upstream systemd scripts
• BZ - 1159234 - ocf:heartbeat:nfsserver does not umount /var/lib/nfs on shared disk
• BZ - 1161490 - [exportfs] when export [$IPv6]:$expdir always random fail.
• BZ - 1163891 - rpc.mountd can be blocked by a bad client
• BZ - 1170364 - Typos in nfs-utils sysconfig files and associated script
• BZ - 1182692 - disable sm-notify on 'systemctl start nfs-server' no longer works
• BZ - 1183821 - GSS_USE_PROXY needs to be set in run/sysconfig/nfs-utils

CVEs

(none)

References

(none)