Synopsis

device-mapper-multipath bug fix and enhancement update

Type/Severity

Product Enhancement Advisory

Topic

Updated device-mapper-multipath packages that fix several bugs and add
various enhancements are now available.

Description

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

Bug fixes:

• The kernel driver of device-mapper multipath appeared to be old and SAN boot
  could fail, because the version testing of the driver was incorrect. Version
  testing is now implemented correctly. (BZ#517951)
  
• On a non-disruptive upgrade (NDU), all paths of EMC Symmetric arrays failed
  and the application suddenly terminated. The default configurations for EMC
  Symmetric are added and the issue no longer occurs. (BZ#562967)
  
• device-mapper multipath failed to update its maps after a path state
  transition. multipathd now automatically updates the path groups when a path
  priority changes. (BZ#566685)
  
• Because of a udev race, partitions on multipath devices were not always
  created. The udev rules now wait for device-mapper multipath to finish the
  device creation. (BZ#568127)
  
• If a multipath device configured with queue_if_no_path with no working paths
  was created while booting, the machine hung. multipath no longer enables queuing
  before multipathd is started. (BZ#579789)
  
• If a default configuration used /bin/true for the priority callout, booting
  from a multipathed root file system stopped responding. Now the default values
  of the respective configurations are set to "none" and booting succeeds.
  (BZ#580729)
  
• To resize a multipath device, you had to run "multipathd -k'resize map
  [mapname]'", as running "multipath" caused it to get stuck in the SUSPENDED
  state. In this state, all I/O to the device hung. You can now resize the device
  with either command. (BZ#584742)
  
• The "show config" command displayed only values differing from the default
  values. Now, the command prints the complete configuration. (BZ#585225)
  
• If you added and removed a path in quick succession, the path was removed
  while multipathd was still using it, resulting in a segmentation fault.
  multipathd no longer crashes. (BZ#597789)
  
• If all paths to a device failed and were recovered, in some cases multipath
  was unable to recover the path immediately. multipath now detects recovered
  paths. (BZ#599053)
  
• Since the HWTABLE cannot be overridden, the "defaults" section of the
  multipath.conf man page no longer implies that anything in the section becomes
  default and overrides the implied settings. (BZ#599686)
  
• The kernel could send a spurious remove uevent for a multipath device and a
  valid multipath device was removed. uevents are now sent only after a device is
  removed. (BZ#614966)
  
• Restoring paths on a group_by_prio multipath device could cause the pathgroups
  to be misconfigured. Multipathd now refreshes all path priorities after paths
  are restored, which solves the issue. (BZ#660238)
  

Enhancements:

• CCISS devices are now supported. (BZ#484419)
  
• Multipath for storage devices mounted as read-only with the 'nodev' option is
  added. (BZ#559852)
  
• The multipath and multipathd commands print warning messages in case of an
  invalid configuration parameter in multipath.conf. (BZ#560892)
  
• The default configuration for IBM Virtual SCSI ALUA, HP EVA 3000/5000 and
  P2000, EUROLOGC FC2502 devices is provided. (BZ#647358, BZ#565579, BZ#573495)
  
• The "pg_prio_calc" option was added to multipath.conf default options. By
  default, the option is set to "sum" and group priority is calculated as the sum
  of its path priorities. If set to "avg", multipath calculates priorities using
  the average priority of the paths in the group. (BZ#570513)
  
• The "log_checker_err" option was added to the multipath.conf defaults option.
  By default, the option is set to "always" and a path checker error is logged
  continuously. If set to "once", multipathd logs the path checker error once at
  logging level 2. Any later errors are logged at level 3, until the device is
  restored. (BZ#574813)
  
• Virtio block devices can be multipathed. (BZ#576600)
  

Users should 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.

This update is available via Red Hat Network. Details on how to use the Red Hat
Network to apply this update are available at
https://access.redhat.com/kb/docs/DOC-11259

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 - 484419 - FEAT: RHEL5.6: CCISS device-mapper-multipath support: missing sysfs attributes
• BZ - 517951 - [FOCUS] DM multipath kernel driver version too old
• BZ - 566685 - [NetApp 5.6 bug] DM-Multipath fails to update maps after path state transition on ALUA enabled setups
• BZ - 570513 - [NetApp 5.6 feat] Path switching inefficiency in DM-Multipath
• BZ - 573495 - EUROLOGC/FC2502 needs hwtable entry for getuid callout to use the correct scsi_id codepage
• BZ - 579789 - System hangs on boot if multipath disks are in Not Ready state.
• BZ - 580729 - change default configuration for array(s) that uses /bin/true as a prio_callout
• BZ - 584742 - IO is stuck due to active device that moved to suspend mode and never resumed
• BZ - 597789 - rhel: multipathd[2424]: segfault at 00000000000004a4 rip 000000000041eb98 rsp 00000000
• BZ - 614966 - PVs are created under /dev and not under /dev/mapper
• BZ - 647358 - FEAT: New HP Storage Array Parameters in built-in DM Multipath H/W table (Device Mapper multi-pathing): HP SWD
• BZ - 660238 - [NetApp 5.6 Bug] Incorrect dm-multipath path grouping after storage controller faults

CVEs

(none)

References

(none)

Red Hat Enterprise Linux Server 5

SRPM
device-mapper-multipath-0.4.7-42.el5.src.rpm	SHA-256: b876d3a8bf063ac6d3eff06129185f90ff94a69bf07ccf558f24fe76a536e6f1
x86_64
device-mapper-multipath-0.4.7-42.el5.x86_64.rpm	SHA-256: 8fd7f596076051270bbb952a02fd8e81486e10b26518a5f98cea7d32f1c6642a
kpartx-0.4.7-42.el5.x86_64.rpm	SHA-256: a0b1888ab2d16c2ad0ec70eb55d8b2758cf8aad236ac417c1f0ebd7836110315
ia64
device-mapper-multipath-0.4.7-42.el5.ia64.rpm	SHA-256: 19cf28e0e2b9068528d41cc30a4370edadcb3fba488e4e4e2a797661176f7c63
kpartx-0.4.7-42.el5.ia64.rpm	SHA-256: e596e51a4e75fc2c1d9552c257efe0c645aacb62e07aa9876449c18211f98756
i386
device-mapper-multipath-0.4.7-42.el5.i386.rpm	SHA-256: 962c5b2c13cb473a26c96e74906eff9d31c551abaca2cf8083bcfc758205249d
kpartx-0.4.7-42.el5.i386.rpm	SHA-256: 8342f368f744db57cd2367e453e4f96a5cf813241c57128cd6dba5be41d80c04

Red Hat Enterprise Linux Workstation 5

SRPM
device-mapper-multipath-0.4.7-42.el5.src.rpm	SHA-256: b876d3a8bf063ac6d3eff06129185f90ff94a69bf07ccf558f24fe76a536e6f1
x86_64
device-mapper-multipath-0.4.7-42.el5.x86_64.rpm	SHA-256: 8fd7f596076051270bbb952a02fd8e81486e10b26518a5f98cea7d32f1c6642a
kpartx-0.4.7-42.el5.x86_64.rpm	SHA-256: a0b1888ab2d16c2ad0ec70eb55d8b2758cf8aad236ac417c1f0ebd7836110315
i386
device-mapper-multipath-0.4.7-42.el5.i386.rpm	SHA-256: 962c5b2c13cb473a26c96e74906eff9d31c551abaca2cf8083bcfc758205249d
kpartx-0.4.7-42.el5.i386.rpm	SHA-256: 8342f368f744db57cd2367e453e4f96a5cf813241c57128cd6dba5be41d80c04

Red Hat Enterprise Linux Desktop 5

SRPM
device-mapper-multipath-0.4.7-42.el5.src.rpm	SHA-256: b876d3a8bf063ac6d3eff06129185f90ff94a69bf07ccf558f24fe76a536e6f1
x86_64
device-mapper-multipath-0.4.7-42.el5.x86_64.rpm	SHA-256: 8fd7f596076051270bbb952a02fd8e81486e10b26518a5f98cea7d32f1c6642a
kpartx-0.4.7-42.el5.x86_64.rpm	SHA-256: a0b1888ab2d16c2ad0ec70eb55d8b2758cf8aad236ac417c1f0ebd7836110315
i386
device-mapper-multipath-0.4.7-42.el5.i386.rpm	SHA-256: 962c5b2c13cb473a26c96e74906eff9d31c551abaca2cf8083bcfc758205249d
kpartx-0.4.7-42.el5.i386.rpm	SHA-256: 8342f368f744db57cd2367e453e4f96a5cf813241c57128cd6dba5be41d80c04

Red Hat Enterprise Linux for IBM z Systems 5

SRPM
device-mapper-multipath-0.4.7-42.el5.src.rpm	SHA-256: b876d3a8bf063ac6d3eff06129185f90ff94a69bf07ccf558f24fe76a536e6f1
s390x
device-mapper-multipath-0.4.7-42.el5.s390x.rpm	SHA-256: cba1364532eb43bcf7764058b8c775adc2ca1913d7afeabf17361700fedebb84
kpartx-0.4.7-42.el5.s390x.rpm	SHA-256: 545669c68e400076cd152343eaca1631a5372fbdb1b429d2461b5f18d6a0b65b

Red Hat Enterprise Linux for Power, big endian 5

SRPM
device-mapper-multipath-0.4.7-42.el5.src.rpm	SHA-256: b876d3a8bf063ac6d3eff06129185f90ff94a69bf07ccf558f24fe76a536e6f1
ppc
device-mapper-multipath-0.4.7-42.el5.ppc.rpm	SHA-256: b005830d3e269ddd6ebe50193f426b0088d3ce96b36cee96c3ec325aabdd4b00
kpartx-0.4.7-42.el5.ppc.rpm	SHA-256: 154be989e3dd6dd7bbe2baa5f3fb41578584ed77d0e54a246f5702ae23ed57c5

Red Hat Enterprise Linux Server from RHUI 5

SRPM
device-mapper-multipath-0.4.7-42.el5.src.rpm	SHA-256: b876d3a8bf063ac6d3eff06129185f90ff94a69bf07ccf558f24fe76a536e6f1
x86_64
device-mapper-multipath-0.4.7-42.el5.x86_64.rpm	SHA-256: 8fd7f596076051270bbb952a02fd8e81486e10b26518a5f98cea7d32f1c6642a
kpartx-0.4.7-42.el5.x86_64.rpm	SHA-256: a0b1888ab2d16c2ad0ec70eb55d8b2758cf8aad236ac417c1f0ebd7836110315
i386
device-mapper-multipath-0.4.7-42.el5.i386.rpm	SHA-256: 962c5b2c13cb473a26c96e74906eff9d31c551abaca2cf8083bcfc758205249d
kpartx-0.4.7-42.el5.i386.rpm	SHA-256: 8342f368f744db57cd2367e453e4f96a5cf813241c57128cd6dba5be41d80c04