Amarok 2.5: Collection empty after crash

[Bart Cerneels]

On Thu, Mar 29, 2012 at 16:47, Martin Steigerwald <Martin at lichtvoll.de> wrote:
> Hi!
>
> I wanted to send this as bug report, but as on trying to get diagnostic
> information it suddenly worked again, I just write a mail to here for now:
>
>
> I had this before, although it has been quite some time. Instead of just
> deleting the whole database and starting from scratch without
> understanding what has happened, I now want to understand whats going on
> here.
>
> On my Amarok machine, a ThinkPad T23, with Debian Wheezy/Sid, I just
> upgraded from KDE SC 4.6.5 to 4.7.4. Then I rebooted and started Amarok
> again.
>
> It played some tracks and then music stopped. As I looked Amarok was
> stopped. I thought it might have crashed.
>
> I started it again:
>
> - collection was empty, except for Amarok theme Art of Nations
> - playlist was empty
>
>
> I tried to update the collection database. Then I went to
> Settings/Collection and told it to scan the collection again.
>
> Nothing.
>
>
> Thats it. What has happened?
>
> IMHO thats absolutely a no-go. I just removed Pulseaudio from that machine
> some weeks ago, cause when I resume this machine I want it to play audio -
> instead of it spilling usb_set_interface_failed onto kernel log or not
> initializing all channels properly or doing audio stuttering where it
> doesn´t without and so on, but thats a different rant.
>
> I expect my Amarok machine to play when I resume it. Just like when I
> switch on my CD player. And thats it. No discussion.
>
>
> Well some diagnostics:
>
> martin at deepdance:~> apt-show-versions | egrep "(amarok|libqtgui4|kde-
> runtime)"
> amarok/wheezy uptodate 2.5.0-1
> amarok-common/wheezy uptodate 2.5.0-1
> amarok-utils/wheezy uptodate 2.5.0-1
> kde-runtime/wheezy uptodate 4:4.7.4-2
> kde-runtime-data/wheezy uptodate 4:4.7.4-2
> libqtgui4/wheezy uptodate 4:4.7.4-2
>
>
> martin at deepdance:share/apps/amarok> ls -lh collection.db
> -rw-r--r-- 1 martin martin 6,3M Mai 13  2009 collection.db
>
> martin at deepdance:share/apps/amarok> ls -l mysqle
> insgesamt 0
> drwx------ 1 martin martin 2040 Okt  9 14:09 amarok
> drwx------ 1 martin martin   12 Mai 13  2009 mysql
>
> amarok database contains lots of *.frm, *.MYD and *.MYI files.
>
> martin at deepdance:share/apps/amarok> find -iname "*lock*" | grep -v moods
> martin at deepdance:share/apps/amarok#1>
>
>
> Hmmm, now I cleaned .xsession-errors with truncate -s0 and started
>
> amarok --debug
>
> But then at least the collection is there again.
>
> Playlist is still gone.
>
> Well, sorry, it seems thats it with diagnostic information. Next time I
> copy .xsession-errors aside before truncating it to get just the new stuff
> in it.
>
>
>
> I think that recovery after a Amarok crash or whyever Amarok stopped
> played and was stopped then, should be automatic in all cases. Well
> ideally Amarok wouldn´t crash.
>
> Maybe the issue is, that after a full rescan the collection view is not
> updated and one has to stop and start Amarok to get it updated.
>
> But then a full rescan shouldn´t be necessary. The recovery should be
> automatic IMHO.
>
>
> Should it happen again, I think I will backup
>
> ~/.kde/share/apps/Amarok
> ~/.kde/share/config/amarok*
>
> to a safe place before trying any restauration.
>
> Ciao,
> --
> Martin 'Helios' Steigerwald - http://www.Lichtvoll.de
> GPG: 03B0 0D6C 0040 0710 4AFA  B82F 991B EAAC A599 84C7
> _______________________________________________
> Amarok mailing list
> Amarok at kde.org
> https://mail.kde.org/mailman/listinfo/amarok

The playlist is saved to $KDEHOME/share/apps/amarok/current.xspf on
exit. Is it possible that you have a crash on exit that prevents it
from being written? Or perhaps a file permission problem?