[Pkg-utopia-maintainers] Bug#1070019: Bug#1070019: udisks2: autopkgtest failure: fsconfig system call failed: /dev/sr1: Can't open blockdev

[Chris Hofstaedtler]

Dear util-linux@,

in Debian, udisks2 2.10.1-6 (autopkg-)tests fail with util-linux
2.40, but passed with 2.39. We are not yet sure if this is directly
caused by util-linux, but it seems somewhat likely.

I won't get to it this week (also re: stable v2.40.1), but maybe
someone else has seen this failure already?

> udisks2's autopkgtest fails when tried together with util-linux 2.40. An
> example can be seen here:
> https://ci.debian.net/packages/u/udisks2/testing/amd64/46012968/
> 
> 537s ======================================================================
> 537s FAIL: test_ext4 (__main__.FS.test_ext4)
> 537s fs: ext4
> 537s ----------------------------------------------------------------------
> 537s Traceback (most recent call last):
> 537s   File "/tmp/autopkgtest.btnhgm/build.cz4/src/src/tests/integration-test", line 1107, in _do_udisks_check
> 537s     cd_fs.call_mount_sync(ro_options, None)
> 537s gi.repository.GLib.GError: udisks-error-quark: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error mounting /dev/sr1 at /media/root/41b1acb1-744c-422a-9071-2dba5368a683: fsconfig system call failed: /dev/sr1: Can't open blockdev (0)
> 537s
> 537s During handling of the above exception, another exception occurred:
> 537s
> 537s Traceback (most recent call last):
> 537s   File "/tmp/autopkgtest.btnhgm/build.cz4/src/src/tests/integration-test", line 725, in test_ext4
> 537s     self._do_fs_check('ext4')
> 537s   File "/tmp/autopkgtest.btnhgm/build.cz4/src/src/tests/integration-test", line 894, in _do_fs_check
> 537s     self._do_udisks_check(fs_type)
> 537s   File "/tmp/autopkgtest.btnhgm/build.cz4/src/src/tests/integration-test", line 1112, in _do_udisks_check
> 537s     self.fail('Mounting read-only device with \'rw\' option failed'
> 537s AssertionError: Mounting read-only device with 'rw' option failedwith an unexpected error.
> 537s Got: udisks-error-quark: GDBus.Error:org.freedesktop.UDisks2.Error.Failed: Error mounting /dev/sr1 at /media/root/41b1acb1-744c-422a-9071-2dba5368a683: fsconfig system call failed: /dev/sr1: Can't open blockdev (0)
> 537s Expected: 'is write-protected but explicit read-write mode requested' or 'is write-protected but `rw' option given'
> 
> I do not understand what this error means, or what the underlying problem is.
> Please investigate.

For context, Debian's util-linux 2.40-7 should have everything from
2.40 stable up to a8aa0b5f154a44557f5bae5a4027bdbfe42b0323.

Chris