/proc for docker

[Jan Rękorajski]

On Wed, 15 Jan 2014, Elan Ruusamäe wrote:

> On 11/01/14 19:44, Elan Ruusamäe wrote:
> > root at e0ea0ce6904b:/# ls -l /proc
> > ls: cannot access /proc/1: No such file or directory
> > ls: cannot access /proc/10: No such file or directory
> > total 0
> > ??????????  ? ?    ?                  ?            ? 1
> > ??????????  ? ?    ?                  ?            ? 10
> > dr-xr-xr-x  3 root root               0 Jan 11 17:38 acpi
> > -r--r--r--  1 root root               0 Jan 11 17:38 buddyinfo
> > dr-xr-xr-x  4 root root               0 Jan 11 17:38 bus
> 
> the problem that readdir() returns pid entries but stat() gives ENOENT 
> is caused by vserver patch.
> i.e disabling vserver patch would make it work back again.
> 
> i updated vserver patch to be recent, just in case 3.10.25-vs2.3.6.8, 
> but the problem remained.
> 
> btw, this can be easily tested with plain lxc only:
> # lxc-create -t busybox --name busybox
> # lxc-start --name busybox -d
> # lxc-attach busybox --name busybox ls -- -l /proc/self
> ls: /proc/self: cannot read link: No such file or directory
> lrwxrwxrwx    1 root     root             0 Jan 15 19:58 /proc/self

Maybe try playing with vprocunhide from util-vserver?

-- 
Jan Rękorajski                                 | PLD/Linux
SysAdm                                         | http://www.pld-linux.org/
baggins<at>mimuw.edu.pl
baggins<at>pld-linux.org