Bug#880625: blk-availability.service: ExecStart=/usr/bin/true fails

[Sven Hartge]

Package: lvm2
Version: 2.02.175-1
Severity: normal

Hi!

/lib/systemd/system/blk-availability.service uses

  ExecStart=/usr/bin/true

as No-Op during system start. In a Debian system without usr-merge the
"true" binary is /bin/true, causing this systemd unit to enter a failed
state:

------8<---------------
root at skuld:~# systemctl --state failed
  UNIT                     LOAD   ACTIVE SUB    DESCRIPTION                  
● blk-availability.service loaded failed failed Availability of block devices

LOAD   = Reflects whether the unit definition was properly loaded.
ACTIVE = The high-level unit activation state, i.e. generalization of SUB.
SUB    = The low-level unit activation state, values depend on unit type.

1 loaded units listed. Pass --all to see loaded but inactive units, too.
To show all installed unit files use 'systemctl list-unit-files'.
root at skuld:~# systemctl status blk-availability.service
● blk-availability.service - Availability of block devices
   Loaded: loaded (/lib/systemd/system/blk-availability.service; enabled; vendor preset: enabled)
   Active: failed (Result: exit-code) since Thu 2017-11-02 15:03:50 CET; 8h ago
  Process: 484 ExecStart=/usr/bin/true (code=exited, status=203/EXEC)
 Main PID: 484 (code=exited, status=203/EXEC)

Nov 02 15:03:50 skuld systemd[484]: blk-availability.service: Failed to execute command: No such file or directory
Nov 02 15:03:50 skuld systemd[484]: blk-availability.service: Failed at step EXEC spawning /usr/bin/true: No such file or directory
Nov 02 15:03:50 skuld systemd[1]: blk-availability.service: Main process exited, code=exited, status=203/EXEC
Nov 02 15:03:50 skuld systemd[1]: blk-availability.service: Failed with result 'exit-code'.
Nov 02 15:03:50 skuld systemd[1]: Failed to start Availability of block devices.
Warning: Journal has been rotated since unit was started. Log output is incomplete or unavailable.
------8<---------------

Grüße,
Sven

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (400, 'testing'), (100, 'experimental'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.13.0-1-amd64 (SMP w/12 CPU cores)
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8), LANGUAGE=en_US.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)

Versions of packages lvm2 depends on:
ii  dmeventd                  2:1.02.144-1
ii  dmsetup                   2:1.02.144-1
ii  libblkid1                 2.30.2-0.1
ii  libc6                     2.24-17
ii  libdevmapper-event1.02.1  2:1.02.144-1
ii  libdevmapper1.02.1        2:1.02.144-1
ii  liblvm2app2.2             2.02.175-1
ii  libreadline5              5.2+dfsg-3+b1
ii  libsystemd0               235-2
ii  libudev1                  235-2
ii  lsb-base                  9.20170808

lvm2 recommends no packages.

Versions of packages lvm2 suggests:
pn  thin-provisioning-tools  <none>

-- debconf information excluded