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: Wed, 29 Apr 2015 22:28:27 +0200
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=E5=AE=8B=E6=96=87=E6=AD=A6 <iyzsong@gmail.com> skribis:

> Ludovic Court=C3=A8s <ludo@gnu.org> writes:
>
>> =E7=99=BD=E3=81=84=E7=86=8A=EF=BC=A0=E7=9B=B8=E6=92=B2=E9=81=93 <guix-de=
vel_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, s=
i_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 abo=
ut child
>> processes?
> I tried 'strace -f', then find out that qemu-nbd need access to "/var/loc=
k".
> After "mkdir /var/lock", it works.

Thanks, I=E2=80=99ve committed this:


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Content-Type: text/x-patch
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--- a/gnu/build/install.scm
+++ b/gnu/build/install.scm
@@ -121,6 +121,7 @@ STORE."
     (directory "/bin")
     (directory "/tmp" 0 0 #o1777)                 ; sticky bit
     (directory "/var/tmp" 0 0 #o1777)
+    (directory "/var/lock" 0 0 #o1777)
 
     (directory "/root" 0 0)                       ; an exception

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DQpMdWRv4oCZLg0K
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