From 23-Feb-2020 onwards, GNOME GitLab Continuous Integration test jobs
have been failing running unit tests which previously succeeded. With
some extra debugging added into test_BlockSpecial to print 'bname' and
'bs' values in the failing tests, here are fragments from
tests/test-suite.log for the the test_BlockSpecial failures in a test CI
job:
FAIL: test_BlockSpecial
=======================
...
[ RUN ] BlockSpecialTest.NamedBlockSpecialObjectBlockDevice
bname="/dev/sr0"
bs=BlockSpecial{"/dev/sr0",0,0}
test_BlockSpecial.cc:218: Failure
Value of: bs.m_major > 0 || bs.m_minor > 0
Actual: false
Expected: true
[ FAILED ] BlockSpecialTest.NamedBlockSpecialObjectBlockDevice (0 ms)
...
[ RUN ] BlockSpecialTest.TwoNamedBlockSpecialObjectBlockDevices
bname1="/dev/sr0"
bname2="/dev/sda"
bs1=BlockSpecial{"/dev/sr0",0,0}
bs2=BlockSpecial{"/dev/sda",0,0}
test_BlockSpecial.cc:250: Failure
Value of: bs1.m_major != bs2.m_major || bs1.m_minor != bs2.m_minor
Actual: false
Expected: true
[ FAILED ] BlockSpecialTest.TwoNamedBlockSpecialObjectBlockDevices (1 ms)
Contents of /proc/partitions inside the Docker image when this test CI
job failed:
$ cat /proc/partitions
major minor #blocks name
11 0 1048575 sr0
8 0 573367448 sda
8 1 573366407 sda1
And the listing of /dev/:
$ ls -l /dev/
total 0
lrwxrwxrwx 1 root root 11 Mar 3 09:00 core -> /proc/kcore
lrwxrwxrwx 1 root root 13 Mar 3 09:00 fd -> /proc/self/fd
crw-rw-rw- 1 root root 1, 7 Mar 3 09:00 full
drwxrwxrwt 2 root root 40 Mar 3 09:00 mqueue
crw-rw-rw- 1 root root 1, 3 Mar 3 09:00 null
lrwxrwxrwx 1 root root 8 Mar 3 09:00 ptmx -> pts/ptmx
drwxr-xr-x 2 root root 0 Mar 3 09:00 pts
crw-rw-rw- 1 root root 1, 8 Mar 3 09:00 random
drwxrwxrwt 2 root root 40 Mar 3 09:00 shm
lrwxrwxrwx 1 root root 15 Mar 3 09:00 stderr -> /proc/self/fd/2
lrwxrwxrwx 1 root root 15 Mar 3 09:00 stdin -> /proc/self/fd/0
lrwxrwxrwx 1 root root 15 Mar 3 09:00 stdout -> /proc/self/fd/1
crw-rw-rw- 1 root root 5, 0 Mar 3 09:00 tty
crw-rw-rw- 1 root root 1, 9 Mar 3 09:00 urandom
crw-rw-rw- 1 root root 1, 5 Mar 3 09:00 zero
See how the test_BlockSpecial fixtures are getting major=0 and minor=0
for the block special devices they are testing with. This is happening
because there aren't any entries in /dev for those disks and partitions
listed in /proc/partitions. Assume that Docker in GNOME GitLab has
changed and that unneeded and unwanted devices in /dev are no longer
being created inside images.
In the test CI jobs execute new script, tests/makedev.sh, to create just
the first two block special devices mentioned in /proc/partitions needed
by test_BlockSpecial.
Closes!59 - Fix GNOME GitLab CI test job failures because of missing
/dev entries
Mike Fleetwood