libvirt users - Oct 2015 - Re: autpfs + nfs stuck on stat() inside libvirt lxc 1.2.18

Hi all.

Has someone success story with using autofs + nfs inside libvirt LXC container ?
In my case nfs client and server in lxc work just fine, but with
autofs hang on system call state().
I use CE7_64 on nodes and inside container with libvirt 1.2.18
May be I must set some of capabilities in <feature>
(http://man7.org/linux/man-pages/man7/capabilities.7.html) ?
I try only CAP_SYS_ADMIN and it's no solve problem.

b.r.
 Maxim Kozin

Additioanl info.
after start automount inside LXC, in /etc/mtab added string:
/etc/auto.nfs /host autofs
rw,relatime,fd=6,pgrp=679,timeout=10,minproto=5,maxproto=5,indirect 0
0
And autmount hang on lstat('/host/SOMETHING')

If comment lstat() in code, automount would try make directory inside
/host/ and mkdir in such case return -1:
126                     int ret = mkdir(path, mode);
(gdb) p path
$3 = 0x7ffff7fc5250 "/host/vortex"
(gdb) p mode
$4 = 365
(gdb) n
127                     (void) umask(mask);
(gdb) p ret
$5 = -1

https://bugs.centos.org/view.php?id=7455


On 10/8/15, mxs kolo <kolomaxes@gmail.com> wrote:
> Additioanl info.
> after start automount inside LXC, in /etc/mtab added string:
> /etc/auto.nfs /host autofs
> rw,relatime,fd=6,pgrp=679,timeout=10,minproto=5,maxproto=5,indirect 0
> 0
> And autmount hang on lstat('/host/SOMETHING')
>
> If comment lstat() in code, automount would try make directory inside
> /host/ and mkdir in such case return -1:
> 126                     int ret = mkdir(path, mode);
> (gdb) p path
> $3 = 0x7ffff7fc5250 "/host/vortex"
> (gdb) p mode
> $4 = 365
> (gdb) n
> 127                     (void) umask(mask);
> (gdb) p ret
> $5 = -1
>