Issued:
2017-04-25
Updated:
2017-04-25

RHEA-2017:1132 - device-mapper-multipath enhancement update

Synopsis

device-mapper-multipath enhancement update

Type/Severity

Product Enhancement Advisory None

Topic

Updated device-mapper-multipath packages that add one enhancement are now available for Red Hat Enterprise Linux 7.2 Extended Update Support.

Description

The device-mapper-multipath packages provide tools that use the device-mapper multipath kernel module to manage multipath devices.

This update adds the following enhancement:

  • With this update, device-mapper-multipath provides a new "max_sectors_kb" parameter in the defaults, devices, and multipaths sections of the multipath.conf file. This parameter allows you to set the "max_sectors_kb" device queue parameter to the specified value on all underlying paths of a multipath device before the multipath device is first activated.

When a multipath device is created, the device inherits the "max_sectors_kb" value from the path devices. Manually raising this value for the multipath device or lowering this value for the path devices can cause multipath to create I/O operations larger than the path devices allow.

Using the "max_sectors_kb" multipath.conf parameter is an easy way to set these values before a multipath device is created on top of the path devices, and prevent invalid-sized I/O operations from being passed down. (BZ#1429884)

Users of device-mapper-multipath are advised to upgrade to these updated packages, which add this enhancement.

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

ProductVersionArch
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions7.2x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support7.2x86_64
Red Hat Enterprise Linux for Power, little endian - Extended Update Support7.2ppc64le
Red Hat Enterprise Linux for Power, big endian - Extended Update Support7.2ppc64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support7.2s390x
Red Hat Enterprise Linux Server - TUS7.2x86_64
Red Hat Enterprise Linux Server - AUS7.2x86_64
Red Hat Enterprise Linux EUS Compute Node7.2x86_64

Updated Packages

  • kpartx-0.4.9-85.el7_2.8.ppc64.rpm
  • kpartx-0.4.9-85.el7_2.8.ppc64le.rpm
  • kpartx-0.4.9-85.el7_2.8.s390x.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.s390x.rpm
  • kpartx-0.4.9-85.el7_2.8.x86_64.rpm
  • device-mapper-multipath-0.4.9-85.el7_2.8.ppc64le.rpm
  • device-mapper-multipath-0.4.9-85.el7_2.8.x86_64.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.i686.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.ppc64.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.ppc64.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.ppc64le.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.i686.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.s390x.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.ppc.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.ppc64le.rpm
  • device-mapper-multipath-0.4.9-85.el7_2.8.ppc64.rpm
  • device-mapper-multipath-0.4.9-85.el7_2.8.s390x.rpm
  • device-mapper-multipath-0.4.9-85.el7_2.8.src.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.s390.rpm
  • device-mapper-multipath-libs-0.4.9-85.el7_2.8.x86_64.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.s390.rpm
  • device-mapper-multipath-sysvinit-0.4.9-85.el7_2.8.ppc64.rpm
  • device-mapper-multipath-sysvinit-0.4.9-85.el7_2.8.ppc64le.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.ppc.rpm
  • device-mapper-multipath-sysvinit-0.4.9-85.el7_2.8.s390x.rpm
  • device-mapper-multipath-debuginfo-0.4.9-85.el7_2.8.x86_64.rpm
  • device-mapper-multipath-sysvinit-0.4.9-85.el7_2.8.x86_64.rpm

Fixes

(none)

CVEs

(none)

References

(none)

Additional information