Am Sonntag, 28. Januar 2018, 18:47:00 CET schrieb Matthias Bodenbinder: > Hello Tobias, > > I tried to follow your instructions. Not sure if I did it right. When I hit > ctrl-c after <make it hang> nothing happens until the dd command is > finished with the file transfer. I guess that is what you expected!
I wasn't expecting gdb to be blocked, too, no. The backtrace you have still
shows that gphoto2 was in the process of detecting connected cameras, so my
initial assumption is still likely to be true.
> The gdb.txt is attached.
>
> Matthias
Tobias
> Am 28.01.2018 um 16:35 schrieb Tobias Ellinghaus:
> > Am Sonntag, 28. Januar 2018, 13:13:20 CET schrieb Matthias Bodenbinder:
> >> I did an strace and found that DT is trying to stat a DCIM folder in the
> >> cloud:
> >>
> >> 4969 stat("/mnt/magentacloud/DCIM", <unfinished ...>
> >> 4969 stat("/mnt/magentacloud/dcim", 0x7ff6b7ff0330) = -1 ENOENT (No such
> >> file or directory)
> >>
> >> Why is that? What has DT to do with this directory?
> >
> > As "DCIM" is part of the file layout of cameras I would guess that it's
> > gphoto2. Let's find out.
> > Please start darktable in gdb, make it hang and then get a backtrace:
> >
> > gdb darktable
> > r
> > <make it hang>
> > ctrl-c
> > set pagination off
> > set logging file gdb.txt
> > set logging on
> > thread apply all bt full
> > c
> > <wait for dt to recover and close dt>
> > q
> >
> > Then show us the generated file "gdb.txt".
> >
> >> As long as dd is writing to /mnt/magentacloud the drive is not
> >> responding.
> >> Even simple "ls" commands are waitng until the dd command is finished. So
> >> the "stat" from DT must wait also.
> >
> >> DT is actually doing a "stat" on every mounted directory in /mnt:
> > That sounds like gphoto2 looking for removable media.
> >
> >> 4969 stat("/mnt/magentacloud/DCIM", <unfinished ...>
> >> 4969 stat("/mnt/magentacloud/dcim", 0x7ff6b7ff0330) = -1 ENOENT (No such
> >> file or directory) 4969 stat("/mnt/zstore/DCIM", 0x7ff6b7ff0330) = -1
> >> ENOENT (No such file or directory) 4969 stat("/mnt/zstore/dcim",
> >> 0x7ff6b7ff0330) = -1 ENOENT (No such file or directory) 4969
> >> stat("/mnt/zstore/BENCHMARK/DCIM", 0x7ff6b7ff0330) = -1 ENOENT (No such
> >> file or directory) 4969 stat("/mnt/zstore/BENCHMARK/dcim",
> >> 0x7ff6b7ff0330)
> >> = -1 ENOENT (No such file or directory)
> >>
> >> Why is it doing that?
> >>
> >>
> >> Kind Regards
> >> Matthias
> >>
> >> Matthias
> >
> > Tobias
> >
> > [...]
>
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