Bug#1041360: partitionmanager calls btrfsck --repair causing data corruption

[Marc Lehmann <debian-reportbug@plan9.de>]

Package: partitionmanager
Version: 22.12.3-1
Severity: normal

Dear Maintainer,

   * What led up to the situation?

I was trying to resize a btrfs partition.

   * What exactly did you do (or not do) that was effective (or
     ineffective)?

I saw partitionmanager invoke "btrfsck --repair" on the partition without asking.

   * What was the outcome of this action?

I immediately killed partitionmanager, and still suffer from shock! :)

   * What outcome did you expect instead?

btrfsck --repair is well known to corrupt data, and under no circumstances
must a program run it without explicitly asking the user. Note the warning
message that the program outputs:

   WARNING:

           Do not use --repair unless you are advised to do so by a developer
           or an experienced user,

This is not an idle warning to be ignored. MAybe one day in the future,
btrfsck --repair will be as useful as other fsck programs, but at this
point in time, running btrfsck --repair almost invariably results in
making things worse rather than better.

-- System Information:
Debian Release: 12.0
  APT prefers stable-updates
  APT policy: (990, 'stable-updates'), (990, 'stable-security'), (990, 'stable'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'oldstable-debug'), (500, 'unstable'), (500, 'testing'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386, x32

Kernel: Linux 6.1.37-schmorp (SMP w/24 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_USER, TAINT_WARN, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_IE.UTF-8, LC_CTYPE=en_IE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages partitionmanager depends on:
ii  kio                   5.103.0-1
ii  libc6                 2.36-9
ii  libkf5configcore5     5.103.0-2
ii  libkf5configgui5      5.103.0-2
ii  libkf5configwidgets5  5.103.0-1
ii  libkf5coreaddons5     5.103.0-1
ii  libkf5crash5          5.103.0-1
ii  libkf5dbusaddons5     5.103.0-1
ii  libkf5i18n5           5.103.0-1
ii  libkf5jobwidgets5     5.103.0-1
ii  libkf5kiocore5        5.103.0-1
ii  libkf5kiogui5         5.103.0-1
ii  libkf5widgetsaddons5  5.103.0-1
ii  libkf5windowsystem5   5.103.0-1
ii  libkf5xmlgui5         5.103.0-1
ii  libkpmcore12          22.12.3-1
ii  libpolkit-qt5-1-1     0.114.0-2
ii  libqt5core5a          5.15.8+dfsg-11
ii  libqt5gui5            5.15.8+dfsg-11
ii  libqt5widgets5        5.15.8+dfsg-11
ii  libstdc++6            12.2.0-14

partitionmanager recommends no packages.

Versions of packages partitionmanager suggests:
ii  btrfs-progs    6.2-1
ii  dosfstools     4.2-1
ii  hfsplus        1.0.4-17
ii  hfsutils       3.2.6-15
pn  jfsutils       <none>
ii  ntfs-3g        1:2022.10.3-1+b1
ii  reiser4progs   1.2.2-1+b1
ii  reiserfsprogs  1:3.6.27-4
ii  xfsprogs       6.1.0-1

-- no debconf information