Re: [SlimDevices: Plugins] Server Power Control Shutdown after Scan results in LMS Crash

2015-01-21 Thread PasTim

gharris999 wrote: 
> Thanks.  You've confirmed that forking shutdown with & solves the
> problem?  If so, I'll put that into the code.  Thanks.
I haven't had a crash report in the server log since I added the &, so I
guess that fixed it.  

Did my rationale for the cause make any sense?  

When you make the fix to 'code' will I need to take the & off my command
line, or will you be adding it to the default value shown on the
settings page?

This got a bit confusing since I also had a crash of the LMS scanner
(not reported in the server log, but as a segfault in the ubuntu
kern.log) that I thought was related.   That turned out to be a separate
problem introduced a while ago in the LMS 'full text search' plugin. 
I'm testing the fix for that right now.



LMS 7.9 on VortexBox Midi, Xubuntu 14.04, FLACs 16->24 bit,
44.1->192kbps. LMS & Squeeze2upnp (Beta - derived from squeezelite) to
Musical Fidelity M1 CLiC and Marantz CR603 UPnP renderers.  Squeezelite
to PC sound.  Minimserver (server) and upplay (control point) to same
amps & to upmpdcli/mpd PC renderers.  Meridian USB Explorer DAC from PCs
to speakers/headphones.  Wireless Xubuntu 14.04 laptop controls
LMS/upplay via Firefox.   Have a Touch with EDO, and a spare, but don't
use.

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Re: [SlimDevices: Plugins] Server Power Control Shutdown after Scan results in LMS Crash

2015-01-20 Thread gharris999

Thanks.  You've confirmed that forking shutdown with & solves the
problem?  If so, I'll put that into the code.  Thanks.



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[SlimDevices: Plugins] Server Power Control Shutdown after Scan results in LMS Crash

2015-01-14 Thread PasTim

On ubuntu 14.04, 64 bit, using "Logitech Media Server Version: 7.9.0 -
1420550541 @ Wed Jan 7 04:04:59 UTC 2015" with Server Power Control
plugin v20141101.163656. 

When I need to rescan my library I normally do this overnight (because
Custom Scans take several hours).  I use the very useful Server Power
Control (SPC) plugin to ensure LMS is awake well before the scheduled
rescan start time, and to shut down when all is done.  This has normally
worked well.

At some point in the last few months I started to notice that the server
log had crashes in it at shutdown time, and ubuntu was complaining about
crashes the next morning.  An example of such a crash reported on the
log is shown below.

To cut quite a long story short, with many different tests, I think I
have managed to fix it by changing the shutdown command in SPC slightly,
from 

Code:

sudo /sbin/shutdown -h now


to

Code:

sudo /sbin/shutdown -h now &


The idea being that maybe SPC was blocking LMS (not just
squeezeboxserver_safe) from shutting down properly, and the trailing "&"
would allow SPC to relinquish control to let LMS shut down.

Has anyone else had this problem, or is able to shed light on the log
entry?  (Sometimes the crash log seems to suggest the scan hasn't
finished, but it has.  I repeated the process during the day is several
different ways, and the scan was definitely done (I also tried stopping
including the Custom Scan and manually ran the SPC shutdown command and
still got a crash).

Code:


  [15-01-10 06:14:11.1576] Plugins::SrvrPowerCtrl::Util::SystemExecCmd (892) 
SrvrPowerCtrl executing command: /storage/Scripts/wakealarm.sh 1420935600 
--verbose --log
  [15-01-10 06:14:17.0042] Plugins::SrvrPowerCtrl::Util::SystemExecCmd (892) 
SrvrPowerCtrl executing command: sudo /sbin/shutdown -h now
  2015-01-10 06:14:20 squeezeboxserver_safe stopped.
  [15-01-10 06:14:20.9061] Slim::Schema::Storage::throw_exception (122) Error: 
DBI Exception: DBD::SQLite::st execute failed: attempt to execute on inactive 
database handle [for Statement "SELECT value FROM metainformation WHERE name = 
'isScanning'"]
  [15-01-10 06:14:20.9313] Slim::Schema::Storage::throw_exception (122) 
Backtrace:
  
  frame 0: Slim::Utils::Log::logBacktrace 
(/usr/share/perl5/Slim/Schema/Storage.pm line 122)
  frame 1: Slim::Schema::Storage::throw_exception 
(/usr/share/squeezeboxserver/CPAN/DBIx/Class/Storage/DBI.pm line 1006)
  frame 2: DBIx::Class::Storage::DBI::__ANON__ 
(/usr/share/perl5/Slim/Music/Import.pm line 656)
  frame 3: Slim::Music::Import::stillScanning (/usr/sbin/squeezeboxserver line 
1155)
  frame 4: main::cleanup (/usr/share/perl5/Slim/bootstrap.pm line 417)
  frame 5: Slim::bootstrap::sigterm (/usr/share/perl5/Slim/Schema.pm line 331)
  frame 6: (eval) (/usr/share/perl5/Slim/Schema.pm line 331)
  frame 7: (eval) (/usr/share/perl5/Slim/Schema.pm line 331)
  frame 8: Slim::Schema::disconnect (/usr/sbin/squeezeboxserver line 1161)
  frame 9: main::cleanup (/usr/sbin/squeezeboxserver line 1140)
  frame 10: main::stopServer 
(/var/lib/squeezeboxserver/cache/InstalledPlugins/Plugins/SrvrPowerCtrl/Util.pm 
line 985)
  frame 11: Plugins::SrvrPowerCtrl::Util::__ANON__ 
(/usr/share/perl5/Slim/Utils/Timers.pm line 266)
  frame 12: (eval) (/usr/share/perl5/Slim/Utils/Timers.pm line 266)
  frame 13: Slim::Utils::Timers::__ANON__ 
(/usr/share/perl5/Slim/Networking/IO/Select.pm line 168)
  frame 14: (eval) (/usr/share/perl5/Slim/Networking/IO/Select.pm line 168)
  frame 15: Slim::Networking::IO::Select::loop (/usr/sbin/squeezeboxserver line 
715)
  frame 16: main::idle (/usr/sbin/squeezeboxserver line 665)
  frame 17: main::main (/usr/sbin/squeezeboxserver line 1200)
  
  [15-01-10 06:14:21.9315] Plugins::SrvrPowerCtrl::Util::SystemExecCmd (892) 
SrvrPowerCtrl executing command: /storage/Scripts/wakealarm.sh 1420935600 
--verbose --log
  [15-01-10 06:14:23.6360] Slim::Schema::forceCommit (2147) Warning: Trying to 
commit transactions before DB is initialized!
  [15-01-10 06:14:23.6437] Plugins::SrvrPowerCtrl::Util::SystemExecCmd (892) 
SrvrPowerCtrl executing command: /storage/Scripts/wakealarm.sh 1420935600 
--verbose --log
  2015-01-10 08:47:50 squeezeboxserver_safe started.
  




LMS 7.9 on VortexBox Midi, Xubuntu 14.04, FLACs 16->24 bit,
44.1->192kbps. LMS & Squeeze2upnp (Beta - derived from squeezelite) to
Musical Fidelity M1 CLiC and Marantz CR603 UPnP renderers.  Squeezelite
to PC sound.  Minimserver (server) and upplay (control point) to same
amps & to upmpdcli/mpd PC renderers.  Meridian USB Explorer DAC from PCs
to speakers/headphones.  Wireless Xubuntu 14.04 laptop controls
LMS/upplay via Firefox.   Have a Touch with EDO, and a spare, but don't
use.

PasTim's Profile: http://forums.slimdevices.com/member.php?userid=41642
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