[Pkg-cryptsetup-devel] Bug#381921: cryptsetup: Does not set the mapping read-only in 'stop' action of init scripts when removing fails

[Rafal Krypa]

Package: cryptsetup
Version: 2:1.0.3-3
Severity: important

Please forgive me if this bug is not related to cryptsetup, I can
suspect LVM2 and mdadm as well.
Please reassign it if necessary.
I have a root, and several other filesystems lied upon LVM2 over
dm-crypt over software RAID-5. The root filesystem is being setup by
initrd created by yaird (0.0.12-15), other filesystems get up from
ordinary initscripts.
During init runlevel 6 sequence however, the root partition remains in
read-write mode and it gets corrupted every single reboot.
The lvm2 stop script refuses to bring PV, GV and LV's created on
cryptsetup mapping down, because the filesystem on root LV is still
mounted.
Because of active LVM, the cryptsetup refuses to stop a given mapping
and initscript says it is 'busy' (that's where I would suspect setting
it read-only).
After all, just before shutdown, kernel says about setting md devices
readonly. And of course my /dev/md1 with RAID5 is not lucky enough and
is reported 'busy' instead of setting read-only - here I suspect the
source of my data corruption.
The filesystem used by me is reiserfs 3.6. This problem is not related
to the filesystem however. First, the initscripts are remounting it
readonly succesfully. Second, I have three reiserfs filesystems on this
particular dm-crypt mapping and only the root filesystem gets corrupted.


-- 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 2.6.17.7
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)

Versions of packages cryptsetup depends on:
pn  dmsetup                      <none>      (no description available)
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  libgcrypt11                  1.2.2-1     LGPL Crypto library - runtime libr
ii  libgpg-error0                1.2-1       library for common error values an
ii  libpopt0                     1.10-2      lib for parsing cmdline parameters
ii  libuuid1                     1.39-1      universally unique id library

cryptsetup recommends no packages.

-- no debconf information