Bug#637104: lvm2: lvrename fails to rename COW partition when renaming snapshot

root sysop at icequake.net
Mon Aug 8 13:31:24 UTC 2011

Package: lvm2
Version: 2.02.66-5
Severity: important

lvrename fails to rename the COW partition associated with a snapshot:

  device-mapper: rename ioctl failed: Device or resource busy

Then if a rename is attempted to the name that should have previously been renamed away
(but returned EBUSY instead as above)

[  698.009267] device-mapper: ioctl: Unable to change name on mapped device debian-kvmraw--aurora.snapshot.old-cow to one that already exists: debian-kvmraw--aurora.snapshot.old2-cow

Further operations on the snapshot produce a hang in uninterruptible I/O state
which requires a reboot.

-- System Information:
Debian Release: 6.0.2
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.0.0-rc5 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages lvm2 depends on:
ii  dmsetup                 2:1.02.48-5      The Linux Kernel Device Mapper use
ii  libc6                   2.13-7           Embedded GNU C Library: Shared lib
ii  libdevmapper1.02.1      2:1.02.48-5      The Linux Kernel Device Mapper use
ii  libreadline5            5.2-7            GNU readline and history libraries
ii  libudev0                164-3            libudev shared library
ii  lsb-base                3.2-23.2squeeze1 Linux Standard Base 3.2 init scrip

lvm2 recommends no packages.

lvm2 suggests no packages.

-- no debconf information

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