From mboxrd@z Thu Jan  1 00:00:00 1970
From: ludo@gnu.org (Ludovic =?utf-8?Q?Court=C3=A8s?=)
Subject: Re: qemu-nbd: Failed to bind socket: No such file or directory
Date: Sat, 28 Mar 2015 15:41:23 +0100
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=E7=99=BD=E3=81=84=E7=86=8A=EF=BC=A0=E7=9B=B8=E6=92=B2=E9=81=93 <guix-devel=
_gnu.org@sumou.com> skribis:

> On 2015-03-26 22:24, ludo@gnu.org wrote:
>> I have no idea, but I would recommend running:
>>
>>   sudo strace -o log qemu-nbd -c /dev/nbd0 disk.qcow2
>>
>> and then find out the socket name in =E2=80=98log=E2=80=99 above =E2=80=
=9CFailed to bind
>> socket=E2=80=9D.
>
> Yeah, was exploring this... I'm attaching the strace log, I don't
> understand what's causing it... Any ideas?

[...]

> --- SIGCHLD {si_signo=3DSIGCHLD, si_code=3DCLD_EXITED, si_pid=3D2063, si_=
status=3D0, si_utime=3D0, si_stime=3D0} ---
> read(3, "Failed to bind socket: No such f"..., 1024) =3D 49
> write(2, "Failed to bind socket: No such f"..., 49) =3D 49

The problem seems to happen in a child process.  Can you add the =E2=80=98-=
f=E2=80=99
flag to the =E2=80=98strace=E2=80=99 command line so we have details about =
child
processes?

TIA,
Ludo=E2=80=99.