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After update 0.21.17 => 0.21.18 MPD with nfs storage plugin hangs on Songs from cue files #756

TheDonDan opened this issue Feb 6, 2020 · 1 comment


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@TheDonDan TheDonDan commented Feb 6, 2020

Bug report

Describe the bug

Running Arch Linux with MPD 0.21.18 on an Raspberry Pi Model B Plus Rev 1.2.
MPD on the RPi is configured as satellite accessing the data via an NFS share (storage plugin).

Until version 0.21.17 everything was working fine. After the update from 0.21.17 => 0.21.18 the MPD server has become difficulties with playing songs from cue files.
Please see "Actual Behavior" . Maybe you have an idea what changed between the two version that could cause such an behavior....I didn't find nothing suspicious...If there are still questions or you need more info, please do not hesitate to ask. Thank you in advance.

Expected Behavior

Start playing wenn issuing the play command on an Song in the middle of an Album. Audio data is an flac or ape file with the corresponding cue file.

Actual Behavior

Gets stuck on 0 seconds wenn issuing the play command on an Song if the audio data is an flac or ape file with the corresponding cue file. Sometimes it is still possible to issue an stop command and afterwards play (suceffuly) other audio data that is not bound to an cue file.
If trying to play other file without issuing the stop command than MPD hangs and it is needed to kill it with the -KILL switch and restart the service.

After restarting the MPD service everything works fine for a short while, but after waiting ca. 20 min with stoped playback the issue appears again.


Music Player Daemon 0.21.18 (0.21.18)
Copyright 2003-2007 Warren Dukes
Copyright 2008-2018 Max Kellermann
This is free software; see the source for copying conditions. There is NO

Database plugins:
simple proxy upnp

Storage plugins:
local smbclient udisks nfs curl

Neighbor plugins:
smbclient upnp udisks

Decoders plugins:
[mad] mp3 mp2
[mpg123] mp3
[vorbis] ogg oga
[oggflac] ogg oga
[flac] flac
[opus] opus ogg oga
[sndfile] wav aiff aif au snd paf iff svx sf voc w64 pvf xi htk caf sd2
[audiofile] wav au aiff aif
[dsdiff] dff
[dsf] dsf
[hybrid_dsd] m4a
[faad] aac
[mpcdec] mpc
[wavpack] wv
[modplug] 669 amf ams dbm dfm dsm far it med mdl mod mtm mt2 okt s3m stm ult umx xm
[mikmod] amf dsm far gdm imf it med mod mtm s3m stm stx ult uni xm
[wildmidi] mid
[fluidsynth] mid
[ffmpeg] 16sv 3g2 3gp 4xm 8svx aa3 aac ac3 adx afc aif aifc aiff al alaw amr anim apc ape asf atrac au aud avi avm2 avs bap bfi c93 cak cin cmv cpk daud dct divx dts dv dvd dxa eac3 film flac flc fli fll flx flv g726 gsm gxf iss m1v m2v m2t m2ts m4a m4b m4v mad mj2 mjpeg mjpg mka mkv mlp mm mmf mov mp+ mp1 mp2 mp3 mp4 mpc mpeg mpg mpga mpp mpu mve mvi mxf nc nsv nut nuv oga ogm ogv ogx oma ogg omg opus psp pva qcp qt r3d ra ram rl2 rm rmvb roq rpl rvc shn smk snd sol son spx str swf tak tgi tgq tgv thp ts tsp tta xa xvid uv uv2 vb vid vob voc vp6 vmd wav webm wma wmv wsaud wsvga wv wve
[gme] ay gbs gym hes kss nsf nsfe sap spc vgm vgz

libsamplerate soxr

Tag plugins:

Output plugins:
shout null fifo pipe alsa ao oss openal solaris pulse jack httpd recorder

Encoder plugins:
null vorbis opus lame twolame wave flac

Archive plugins:
[bz2] bz2
[zzip] zip
[iso] iso

Input plugins:
file archive alsa tidal qobuz curl ffmpeg smbclient nfs mms cdio_paranoia

Playlist plugins:
extm3u m3u pls xspf asx rss soundcloud flac cue embcue

file:// alsa:// tidal:// qobuz:// http:// https:// gopher:// rtp:// rtsp:// rtmp:// rtmpt:// rtmps:// smb:// nfs:// mms:// mmsh:// mmst:// mmsu:// cdda://

Other features:
avahi dbus udisks epoll icu inotify ipv6 systemd tcp un



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@MaxKellermann MaxKellermann commented Feb 16, 2020

This is a surprising problem, because there were no NFS-related changes between those MPD versions, and I have no problem at all with NFS.
Have you upgraded other software at the same time, like libnfs?
Which libnfs version are you using?
Can you confirm that downgrading to MPD 0.21.17 makes the problem disappear?
I need a backtrace of all threads when MPD hangs.

@MaxKellermann MaxKellermann added this to the 0.21 milestone Feb 16, 2020
@MaxKellermann MaxKellermann added the bug label Feb 16, 2020
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