RHBA-2015:1411 - Bug Fix Advisory

Topic

Updated lvm2 packages that fix several bugs and add various enhancements are now
available for Red Hat Enterprise Linux 6.

The lvm2 packages include complete support for handling read and write
operations on physical volumes (PVs), creating volume groups (VGs) from one or
more PVs, and creating one or more logical volumes (LVs) in VGs.

Description

Two enhancements are described in the Red Hat Enterprise Linux 6.7 Release
Notes, linked from the References section:

• This update enhances selection support in the Logical Volume Manager (LVM)

(BZ#853259)

• The "lvchange -p" command can change in-kernel permissions on a logical volume

(LV) (BZ#1021051)

Bugs:

• Volume groups (VGs) built from a high number of physical volumes (PVs) can

experience significant lags. Enabling the lvmetad service reduces the operation
time even on systems where the VG has metadata on all PVs. (BZ#736027)

• The lvremove utility failed to remove damaged thin pools that were not

repaired. The double "--force --force" option can now remove such pool volumes.
(BZ#1021728)

• When the lvmetad service was used with "global/use_lvmetad=1" set, LVM leaked

open sockets, and lvmetad kept threads for existing sockets. Now, LVM no longer
leaks open lvmetad sockets, and lvmetad frees unused threads. (BZ#1130245)

• Activating a thin pool failed under certain circumstances. The lvm2 utility

now properly rounds to 64 kB thin pool chunk size, thus fixing this bug.
(BZ#1132211)

• The lvconvert utility displayed internal error messages under certain

circumstances. Now, lvconvert verifies if the "--originname" value differs from
the "--thinpool" value before the conversion begins. The messages are no longer
displayed. (BZ#1133079)

• The user could not use the lvconvert utility to repair or split mirrors from

cache data and cache metadata volumes due to strict checks for LV names. The
checks have been relaxed, and lvconvert can be successfully used for these
operations. (BZ#1133093)

• The lvm2 utility previously in some cases attempted to access incorrect

devices for locking. Now, lvm2 uses the expected LV lock for snapshot volumes,
thus fixing this bug. (BZ#1136925)

• When the volume_list parameter was set to forbid activating volumes during

thin pool creation on error code path, some volumes could remain active in the
device mapper table without the proper lock being held. All such volumes are now
correctly deactivated before lvm2 exits. (BZ#1140128)

• Changing the VG clustering attribute could malfunction when clustered locking

was selected. The code now correctly checks and propagates locks even for
non-clustered VGs in this situation. The bug no longer occurs. (BZ#1141386)

• It is no longer possible to set the "--minor" and "--major" options for thin

pool volumes with the lvm2 utility. If the user attempts to set them, lvm2
correctly informs the user they are not supported. (BZ#1143747)

• The vgimportclone script did sometimes not work as expected and in some cases

also failed to rename and import duplicated VGs. The script now properly handles
when the "filter" setting is missing from the lvm.conf file, and its code has
been made more robust, thus fixing these bugs. (BZ#1171805, BZ#1205503)

• The "--clear-needs-check-flag" option was missing from the default value for

the thin_check_options option in the "global" section of the lvm.conf file after
installing lvm2. Now, "--clear-needs-check-flag" is set by default after
installation. (BZ#1184353)

• The pvs utility did not list all PVs when reporting only label fields for

given PVs if "obtain_device_list_from_udev=0" was set in lvm.conf. Now, LVM2
generates correct content for the persistent cache, thus fixing this bug.
(BZ#1196767)

Enhancements:

• With this update, LVM cache is fully supported. Users can now create LVs with

a small fast device that serves as a cache to larger and slower devices. For
information on creating cache LVs, see the lvmcache(7) man page. (BZ#1202916)

• This update adds the "--enable-halvm", "--disable-halvm", "--mirrorservice",

and "--startstopservices" options to the lvmconf script. For more information,
see the lvmconf(8) man page. (BZ#1211645)

Solution

Users of lvm2 are advised to upgrade to these updated packages, which fix these
bugs and add these enhancements.

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 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 6 i386
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI 6 x86_64
• Red Hat Enterprise Linux Resilient Storage (for RHEL Server) from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension 6 i386
• Red Hat Enterprise Linux Server - Extended Life Cycle Support Extension (for IBM z Systems) 6 s390x

Fixes

• BZ - 736027 - [lvm] [scale] pvs command takes more than 3 minutes when VG combined from 300 pvs
• BZ - 853259 - removal of a thinp origin volume doesn't remove it's corresponding snapshot vol
• BZ - 983600 - 'Contiguous' policy should partition the tags across the areas if cling tags are defined in lvm.conf
• BZ - 1021051 - lvchange -p should change in-kernel permission if it differs from metadata setting
• BZ - 1021728 - remove issues after pool meta corruption and restoration
• BZ - 1104381 - RAID cache: Removing cache logical volume prints stray error message
• BZ - 1110026 - LVM cache: Unable to lvcreate cache LV from existing origin LV
• BZ - 1116155 - snapshots of cache pool volumes cause issues
• BZ - 1130245 - libdaemon: daemon_close() function doesn't actually close open connection to daemon-server
• BZ - 1132211 - thin pool conversion fails when the size gap between the pool and meta device is too great
• BZ - 1133079 - lvconvert validation is missing when same LV name is used for thinpool and originname
• BZ - 1133093 - no way to split off cache pool raid images
• BZ - 1136925 - LVM hangs when removing snapshot in clustered volume group
• BZ - 1140128 - When thin pool creation is aborted, a left-over linear LV appears in the system.
• BZ - 1141386 - unable to change cluster VG attribute when it contains exclusively activated raid + snapshot
• BZ - 1143747 - attempting to set a persistent minor number on an exclusively activated thin volume causes locking/activation issues
• BZ - 1165596 - 69-dm-lvm-metad.rules calls systemd-run
• BZ - 1167435 - CLVMD_STOP_TIMEOUT misspelled at /etc/init.d/clvmd
• BZ - 1171805 - vgimportclone doesn't work in RHEL 6.6
• BZ - 1174884 - clvmd/cmirror hangs on pvmove > 2TB
• BZ - 1184353 - default thin_check options don't have --clear-needs-check-flag
• BZ - 1194785 - LVM cache: --cachepolicy/settings man page updates
• BZ - 1194787 - LVM cache: segfault when attempting to change the cache policy
• BZ - 1202785 - vgimportclone -n fails: "Failed to find physical volume" on RHEL6
• BZ - 1202916 - LVM Cache: Full Support
• BZ - 1207309 - typo in 'read_only_volume_list' section of lvm.conf
• BZ - 1209445 - When creating a RAID4/5/6 with wrongly formatted options, the creation succeeds.
• BZ - 1211645 - Extend lvmconf script to configure lvm.conf for HA LVM use and add possibility to also set SysV services accordingly

CVEs

(none)

References

• https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html/6.7_Release_Notes/index.html