RHBA-2015:0513 - Bug Fix Advisory

Topic

Updated lvm2 packages that fix multiple bugs and add various enhancements are
now available for Red Hat Enterprise Linux 7.

Description

The lvm2 packages include all of the support for Logical Volume Management
(LVM), for example, handling read and write operations on physical volumes (PV),
creating volume groups (VG) from one or more physical volumes, and creating one
or more logical volumes (LV) in volume groups.

This update provides various bug fixes and enhancements in the following areas:

• Cache support in LVM (BZ#1103381, BZ#1086426, BZ#1148592, BZ#1124414,

BZ#1105332, BZ#1091543, BZ#1143753, BZ#1160903, BZ#1159066, BZ#1158702,
BZ#1111671, BZ#1110948, BZ#1109974, BZ#1108380, BZ#1108361, BZ#1104821,
BZ#1168145, BZ#1152795, BZ#1111620, BZ#1152801)

• Thin support in LVM (BZ#1168140, BZ#1153306, BZ#1147083, BZ#1119839,

BZ#1083633)

• Mirror support in LVM (BZ#1085983, BZ#1042510, BZ#1089170)
• RAID support in LVM (BZ#1168959, BZ#1042510, BZ#1091543, BZ#1086442)
• The dmeventd monitoring daemon (BZ#1184139, BZ#1124414, BZ#1089369,

BZ#1089170)

• The lvmetad metadata daemon (BZ#1085119)
• LVM device filtering (BZ#1082174, BZ#1075699)
• Cluster mirror support and the cmirrord cluster mirror log daemon (BZ#1072358)
• LVM tools in general (BZ#1091870, BZ#1059711, BZ#1150085, BZ#1080189,

BZ#1108394, BZ#1100514, BZ#1069554)

• The lvm2app library (BZ#1164234)

Among others, this update fixes the following bugs:

• If the kernel thin provisioning code detects a device failure or runs out of

metadata space, it sets a flag on the device to indicate that it needs to be
checked. With this update, this flag is dropped automatically once the
thin_check or thin_repair utilities are called within the LVM tools.
(BZ#1083633)

• Previously, when the thin pool chunk size was estimated, the calculated size

was not a multiple of 64 KiB. With this update, the chunk size is properly
rounded. (BZ#1168140)

• With this update, using the "-l 100%FREE" option to create RAID logical

volumes no longer results in an error message. (BZ#1042510)

• The lvcreate code has been fixed to always respect a requested "--type" option

and print an error message if the requested type cannot be created. (BZ#1147083)

• While the lvmetad daemon is running, using the "pvremove -ffy" command on a

number of PVs that belong to a VG no longer results in printing spurious error
messages. (BZ#1150085)

• A bug in the dmeventd monitoring daemon prevented partially failed mirror

volumes and RAID volumes from being automatically repaired. The dmeventd daemon
has been fixed to perform these repairs correctly even when the lvmetad daemon
is used. (BZ#1089369, BZ#1089170)

In addition, this update adds the following enhancements:

• LVM2 now supports extent sizes which are not a power of 2 if the extent size

is bigger than 128 KB. (BZ#1100514)

• The "--errorwhenfull" boolean option has been implemented to control the thin

pool's behavior. By appending this option to the "lvcreate" and "lvchange"
commands, the user can choose whether or not to use the default queue policy
when the pool gets full and resize the thin pool. (BZ#1119839)

• LVM cache is now fully supported. This feature allows users to create logical

volumes with a small fast device performing as a cache to larger slower devices.
For more information, refer to the Red Hat Enterprise Linux 7.1 Release Notes,
linked to in the References section. (BZ#1111620)

• The "physical_extent_size" configuration option has been added to the

"allocation" section in the lvm.conf file. It enables to control the default
physical extent size for newly created VGs. (BZ#1069554)

• It is now possible to issue the "scrub" command on RAID volumes that are

hidden underneath a persistent cache LV. (BZ#1086442)

For detailed information about bug fixes and enhancements included in this
update, follow the Bugzilla references below.

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

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 7.3 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 Resilient Storage for x86_64 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Update Support 7.3 x86_64
• Red Hat Enterprise Linux Server from RHUI 7 x86_64
• Red Hat Enterprise Linux Resilient Storage (for RHEL 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 7.7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.6 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 - 1042510 - mirror and raid creation should be able to use -l100%FREE
• BZ - 1072358 - Warn about cmirrord not running when trying to handle cluster mirrors
• BZ - 1075699 - LVM2 fails to properly filter out internal devices on which PV header is found by chance
• BZ - 1080189 - Segfault on lvremove with lvmetad used and missing PV (lvm1 format)
• BZ - 1083633 - LVM tools need to deal properly with thin provisioning needs_check flag
• BZ - 1085119 - overkill of 'socket connect' messages when lvmetad is not running
• BZ - 1085983 - mirror device failure scenarios lead to deadlocks
• BZ - 1086426 - Problems attempting to remove cache pool before cache origin
• BZ - 1086442 - RFE: allow raid scrubbing on cache pool raid volumes
• BZ - 1089170 - LVM cannot repair mirror when lvmetad is running if the drives gives I/O errors
• BZ - 1089369 - RAID1 not successfully repaired upon failure when lvmetad is running.
• BZ - 1091543 - bogus error when attempting to split images from raid1 cache origin volume
• BZ - 1091553 - "Internal error: Performing unsafe table load" error during snapshot of cache origin volume removal
• BZ - 1091870 - pvremove should not ignore CTRL-c during prompts
• BZ - 1100514 - support non-power-of-2 VG physical extents
• BZ - 1103381 - LVM cache: Not all sub-LVs renamed when caching a RAID LV
• BZ - 1104821 - Buffer I/O errors when configuring cache volumes
• BZ - 1105332 - need a more graceful error when lv is not a cache pool
• BZ - 1108361 - Unable to cache small volumes on VGs with 1k extent sizes
• BZ - 1108380 - cache pool shouldn't be allowed to be deactivated when an active cache origin exists
• BZ - 1108394 - segfault when attempting 'pvs -a -o +devices,pv_mda_free' on VG containing PVs w/o MDA
• BZ - 1109974 - need a more graceful error when attempting to cache an origin that is already cached
• BZ - 1110948 - issues with multiple snapshots of cache volumes
• BZ - 1111671 - need a more graceful way to fail when attempting to remove cache pool during I/O
• BZ - 1111748 - kernel BUG at drivers/md/persistent-data/dm-btree-spine.c when taking snapshot of a cached XFS
• BZ - 1119839 - [RFE] LVM Thin: Enable use of error_if_no_space
• BZ - 1124414 - LVM cache: dmeventd does not work on RAID volumes that are under cache
• BZ - 1143753 - LVM cache: 'lvs' is unable to print the cachemode
• BZ - 1147083 - standard form of lvcreate does not work with thin pools
• BZ - 1148592 - lvconvert ignores '--cachemode writethrough' for cache pools
• BZ - 1150085 - A lot of error messages about missing PVs when using pvremove+lvmetad
• BZ - 1152795 - LVM cache: Add cache statistics to 'lvs'
• BZ - 1152801 - LVM cache: Add ability to specify and display cache policy
• BZ - 1153306 - lvconvert validation is missing when same LV name is used for thinpool and originname
• BZ - 1158702 - Internal errors when attempting to use thin virt volume as cache origin volume
• BZ - 1159066 - Internal errors when attempting to cache a linear origin with a cache pool containing a thin pool data volume
• BZ - 1160903 - RAID cache: Removing cache logical volume prints stray error message
• BZ - 1164012 - regression from .111-1, left over devfs entry when removing cached volume
• BZ - 1164234 - liblvm2app leaking socket when using lvmetad
• BZ - 1164347 - Failed rename when splitting off raid image - there's still an existing device with the name to which we're trying to rename
• BZ - 1168140 - thin pool conversion fails when the size gap between the pool and meta device is too great
• BZ - 1168959 - raid456: multisegment raid LV: lvconvert --repair allocates multiple legs on single PV
• BZ - 1170363 - Raid mirror image not renamed to final new name when splitting off raid images
• BZ - 1175500 - mirror to raid subvol naming change from .111 -> .112
• BZ - 1179730 - pvdisplay fails to find PV unless full path is provided
• BZ - 1179976 - regression - no longer able to stack PVs on LVs containing snapshots
• BZ - 1184139 - After successfully repairing raid, dm is giving out "waitevent ioctl on failed: Interrupted system call"
• BZ - 1184246 - default thin_check options don't have --clear-needs-check-flag
• BZ - 1184795 - Remove udev rule specific to multipath from 10-dm.rules - multipath handles all with its own rules

CVEs

(none)

References

• https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.1_Release_Notes/index.html