[Bug 1449678] Re: zram-config 0.3 : Job for zram-config.service failed

[Mélodie]

** This bug is no longer a duplicate of bug 1448530
   zram-config is not working on non-English locales in vivid

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Title:
  zram-config 0.3 : Job for zram-config.service failed

Status in zram-config package in Ubuntu:
  New

Bug description:
  Hi,

  While testing how zram-config is going in Ubuntu Vivid, I meet with
  error while doing restart and or stop/start.

  It seems to stop fine but throws an error when starting again or
  performing a restart.

  I have installed zram-config 0.3 just today and haven't rebooted yet.
  The CPU is "AMD Athlon(tm) II X2 260 Processor"

  As stated in bug #1449665 there is one block device created:

  $ cat /proc/swaps 
  Filename				Type		Size	Used	Priority
  /dev/zram0                              partition	947216	0	5
  $ 

  Here:
  $ sudo systemctl stop zram-config
  $ cat /proc/swaps 
  Filename				Type		Size	Used	Priority
  /dev/zram0                              partition	947216	0	5
  $ 

  after the stop, the prompt is back without error, but it has done
  nothing.

  With restart:
  $ sudo systemctl restart zram-config
  Job for zram-config.service failed. See "systemctl status zram-config.service" and "journalctl -xe" for details.
  $

  When invoking the suggested commands:
  ****
  $ LANG=C systemctl status zram-config.service -l
  * zram-config.service - Initializes zram swaping
     Loaded: loaded (/lib/systemd/system/zram-config.service; enabled; vendor preset: enabled)
     Active: failed (Result: exit-code) since Tue 2015-04-28 19:34:37 CEST; 2min 7s ago
    Process: 744 ExecStart=/usr/bin/init-zram-swapping (code=exited, status=255)
   Main PID: 744 (code=exited, status=255)

  Apr 28 19:34:37 bento64 init-zram-swapping[744]: sh: echo: I/O error
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: mkswap: error: /dev/zram0 is mounted; will not make swapspace
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: swapon: /dev/zram0 : échec de swapon: Périphérique ou ressource occupé
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: /usr/bin/init-zram-swapping: 21: /usr/bin/init-zram-swapping: cannot create /sys/block/zram1/disksize: Directory nonexistent
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: /dev/zram1: Aucun fichier ou dossier de ce type
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: swapon: stat failed /dev/zram1: Aucun fichier ou dossier de ce type
  Apr 28 19:34:37 bento64 systemd[1]: zram-config.service: main process exited, code=exited, status=255/n/a
  Apr 28 19:34:37 bento64 systemd[1]: Failed to start Initializes zram swaping.
  Apr 28 19:34:37 bento64 systemd[1]: Unit zram-config.service entered failed state.
  Apr 28 19:34:37 bento64 systemd[1]: zram-config.service failed.
  $
  ****

  ****
  -- Unit zram-config.service has begun starting up.
  Apr 28 19:34:37 bento64 audit[781]: <audit-1107> pid=781 uid=102 auid=4294967295 ses=4294967295 msg='apparmo
                                       exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: sh: echo: I/O error
  Apr 28 19:34:37 bento64 kernel: zram: Cannot change disksize for initialized device
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: mkswap: error: /dev/zram0 is mounted; will not make swapspa
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: swapon: /dev/zram0<C2><A0>: <C3><A9>chec de swapon: P<C3>
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: /usr/bin/init-zram-swapping: 21: /usr/bin/init-zram-swappin
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: /dev/zram1: Aucun fichier ou dossier de ce type
  Apr 28 19:34:37 bento64 init-zram-swapping[744]: swapon: stat failed /dev/zram1: Aucun fichier ou dossier de
  Apr 28 19:34:37 bento64 systemd[1]: zram-config.service: main process exited, code=exited, status=255/n/a
  Apr 28 19:34:37 bento64 systemd[1]: Failed to start Initializes zram swaping.
  -- Subject: Unit zram-config.service has failed
  -- Defined-By: systemd
  -- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
  -- 
  -- Unit zram-config.service has failed.
  -- 
  -- The result is failed.
  Apr 28 19:34:37 bento64 systemd[1]: Unit zram-config.service entered failed state.
  Apr 28 19:34:37 bento64 systemd[1]: zram-config.service failed.
  Apr 28 19:34:37 bento64 polkitd(authority=local)[3990]: Unregistered Authentication Agent for unix-process:7
  Apr 28 19:34:37 bento64 audit[781]: <audit-1107> pid=781 uid=102 auid=4294967295 ses=4294967295 msg='apparmo
                                       exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
  Apr 28 19:34:37 bento64 kernel: audit: type=1107 audit(1430242477.545:27): pid=781 uid=102 auid=4294967295 s
                                   exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=?'
  lines 1809-1834/1834 (END)

  ****

  I have done a test using directly the scripts created for /usr/bin,
  the results seem interesting:

  $ sudo /usr/bin/end-zram-swapping 
  rmmod: ERROR: unexpected getopt_long() value 'w'.
  $ cat /proc/swaps 
  Filename				Type		Size	Used	Priority
  $ 

  $ LANG=C sudo /usr/bin/init-zram-swapping 
  sh: echo: I/O error
  mkswap: error: /dev/zram0 is mounted; will not make swapspace
  swapon: /dev/zram0: swapon failed: Device or resource busy
  /usr/bin/init-zram-swapping: 21: /usr/bin/init-zram-swapping: cannot create /sys/block/zram1/disksize: Directory nonexistent
  /dev/zram1: No such file or directory
  swapon: stat failed /dev/zram1: No such file or directory
  $

  I hope I have tested the right way. If anything more is needed, log
  files or so, please ask.

  Best regards,
  Mélodie

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