Bug#377646: lvm2: Persistent minors don't work
Alexander E. Patrakov
patrakov at ums.usu.ru
Mon Jul 10 12:52:59 UTC 2006
Package: lvm2
Version: 2.02.06-2
Severity: normal
The persistent major/minor numbers are silently ignored. Here is
a state of the system before an attempt to create a LVM volume with
persistent major and minor:
home:~# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 63 2006-06-30 21:03 control
brw-rw---- 1 root disk 254, 0 2006-07-10 17:51 mainvg-boot
brw-rw---- 1 root disk 254, 8 2006-07-10 17:51 mainvg-etch
brw-rw---- 1 root disk 254, 4 2006-07-10 17:51 mainvg-etchroot
brw-rw---- 1 root disk 254, 5 2006-07-10 17:51 mainvg-home
brw-rw---- 1 root disk 254, 2 2006-07-10 17:51 mainvg-lfs
brw-rw---- 1 root disk 254, 7 2006-07-10 17:51 mainvg-lfs--install
brw-rw---- 1 root disk 254, 1 2006-07-10 17:51 mainvg-oldhome
brw-rw---- 1 root disk 254, 3 2006-07-10 17:51 mainvg-swaplv
brw-rw---- 1 root disk 254, 6 2006-07-10 17:51 mainvg-vm
Now I attempt to create a test volume that should receive a minor number
20:
home:~# lvcreate -M y --major 254 --minor 20 -L 1 -n test mainvg
File descriptor 3 left open
File descriptor 5 left open
File descriptor 7 left open
Rounding up size to full physical extent 4,00 MB
Logical volume "test" created
Result:
home:~# ls -l /dev/mapper
total 0
crw------- 1 root root 10, 63 2006-06-30 21:03 control
brw-rw---- 1 root disk 254, 0 2006-07-10 17:51 mainvg-boot
brw-rw---- 1 root disk 254, 8 2006-07-10 17:51 mainvg-etch
brw-rw---- 1 root disk 254, 4 2006-07-10 17:51 mainvg-etchroot
brw-rw---- 1 root disk 254, 5 2006-07-10 17:51 mainvg-home
brw-rw---- 1 root disk 254, 2 2006-07-10 17:51 mainvg-lfs
brw-rw---- 1 root disk 254, 7 2006-07-10 17:51 mainvg-lfs--install
brw-rw---- 1 root disk 254, 1 2006-07-10 17:51 mainvg-oldhome
brw-rw---- 1 root disk 254, 3 2006-07-10 17:51 mainvg-swaplv
brw-rw---- 1 root disk 254, 9 2006-07-10 18:44 mainvg-test
brw-rw---- 1 root disk 254, 6 2006-07-10 17:51 mainvg-vm
The minor is 9, not 20! Bug.
BTW I am not sure about "normal" severity. This can potentially lead to data
loss (overwriting a different LVM volume than intended) if one puts swap
on LVM and attempts setting up software suspend on that volume.
-- System Information:
Debian Release: testing/unstable
APT prefers testing
APT policy: (500, 'testing')
Architecture: i386 (i686)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.15-1-686
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Versions of packages lvm2 depends on:
ii debconf [debconf-2.0] 1.5.2 Debian configuration management sy
ii libc6 2.3.6-15 GNU C Library: Shared libraries
ii libdevmapper1.02 2:1.02.07-1 The Linux Kernel Device Mapper use
ii libncurses5 5.5-2 Shared libraries for terminal hand
ii libreadline5 5.1-7 GNU readline and history libraries
ii libselinux1 1.30-1 SELinux shared libraries
ii libsepol1 1.12-1 Security Enhanced Linux policy lib
ii lvm-common 1.5.20 The Logical Volume Manager for Lin
lvm2 recommends no packages.
-- debconf information:
lvm2/snapshots:
More information about the pkg-lvm-maintainers
mailing list