Bug#770090: systemd: systemctl poweroff doesn't poweroff

[fzacarias3k .]

Hi again,

I've found this site and followed the steps to try to debug the problem:
http://freedesktop.org/wiki/Software/systemd/Debugging/

This is the output of dmesg during shutdown:
[ 6792.054805] wlan0: deauthenticating from xx:xx:xx:xx:xx:xx by local
choice (Reason: 3=DEAUTH_LEAVING)
[ 6792.068552] cfg80211: Calling CRDA to update world regulatory domain
[ 6792.102857] systemd[1]: lightdm.service: main process exited,
code=exited, status=1/FAILURE
[ 6792.103138] systemd[1]: Unit lightdm.service entered failed state.
[ 6792.177885] cfg80211: World regulatory domain updated:
[ 6792.177889] cfg80211:  DFS Master region: unset
[ 6792.177891] cfg80211:   (start_freq - end_freq @ bandwidth),
(max_antenna_gain, max_eirp), (dfs_cac_time)
[ 6792.177893] cfg80211:   (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A,
2000 mBm), (N/A)
[ 6792.177896] cfg80211:   (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A,
2000 mBm), (N/A)
[ 6792.177898] cfg80211:   (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A,
2000 mBm), (N/A)
[ 6792.177900] cfg80211:   (5170000 KHz - 5250000 KHz @ 160000 KHz), (N/A,
2000 mBm), (N/A)
[ 6792.177902] cfg80211:   (5250000 KHz - 5330000 KHz @ 160000 KHz), (N/A,
2000 mBm), (0 s)
[ 6792.177904] cfg80211:   (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A,
2000 mBm), (0 s)
[ 6792.177906] cfg80211:   (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A,
2000 mBm), (N/A)
[ 6792.177908] cfg80211:   (57240000 KHz - 63720000 KHz @ 2160000 KHz),
(N/A, 0 mBm), (N/A)
[ 6792.178140] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 6792.576545] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 6797.460556] systemd[1]: systemd-cryptsetup at sda2_crypt.service: control
process exited, code=exited status=1
[ 6797.461659] systemd[1]: Unit systemd-cryptsetup at sda2_crypt.service
entered failed state.
[ 6797.470527] systemd[1]: Shutting down.
[ 6797.505107] watchdog watchdog0: watchdog did not stop!
[ 6797.557957] systemd-journald[239]: Received SIGTERM from PID 1
(systemd-shutdow).
[ 6797.953759] EXT4-fs (dm-3): re-mounted. Opts: (null)
[ 6797.962966] EXT4-fs (dm-3): re-mounted. Opts: (null)
[ 6797.962971] EXT4-fs (dm-3): re-mounted. Opts: (null)
[ 6797.984081] systemd-shutdown[1]: Could not detach DM /dev/dm-0: Device
or resource busy
[ 6797.984258] systemd-shutdown[1]: Could not detach DM /dev/dm-0: Device
or resource busy
[ 6798.060431] EXT4-fs (dm-3): re-mounted. Opts: (null)

/dev/dm-0 is my encrypted partition, which contains my root, home and swap
file-systems (lvm). I'm using Debian's default full-disk encryption scheme.

systemd-cryptsetup at sda2_crypt.service is an auto-generated .service file
which just invokes this on service stop:
/lib/systemd/systemd-cryptsetup detach 'sda2_crypt'

According to systemd's source, that command should print some error
messages:
https://github.com/systemd/systemd/blob/b9e616cc2256501f484f138999ec63a0094f5c4f/src/cryptsetup/cryptsetup.c

But I don't see any of those on my dmesg log, even though I enabled debug
output in systemd via kernel params:
systemd.log_level=debug systemd.log_target=kmsg log_buf_len=1M enforcing=0

Any ideas about what else I could try to debug further?

Kind regards,
Francesc
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