Bug#746358: systemd: system boot hangs if /etc/network/interfaces contains a bridge interface

[Jason Alavaliant]

On 30/04/14 01:10, Michael Biebl wrote:
> Am 29.04.2014 13:10, schrieb Jason Alavaliant:
>> On 2014-04-29 22:36, Michael Biebl wrote:
>>> Am 29.04.2014 11:31, schrieb Jason Alavaliant:
>>> Do you have an NFS / remote fs configuration in your /etc/fstab?
>> Yes I've got a nfs4 mounted home directory
>> server.local:/     /home           nfs4    defaults        0       0
> I suspect the hang to be caused by the NFS fstab entry. Can you comment
> out the entry and reboot so we have confirmation?
>
> If so, can you please try the following patch for
> /etc/network/if-up.d/mountnfs with the NFS mount re-enabled.
>
> --- a/network/if-up.d/mountnfs
> +++ b/network/if-up.d/mountnfs
> @@ -7,6 +7,10 @@
>   #                    Also mounts SMB filesystems now, so the name of
>   #                    this script is getting increasingly inaccurate.
>
> +if [ -d /run/systemd/system ] ; then
> +       systemctl status network.target > /dev/null || exit 0
> +fi
> +
>   PATH=/sbin:/bin
>   . /lib/init/vars.sh
>
>
>


I've tested as requested and can confirm that if I restored the bridge 
interface lines in my /etc/network/interfaces but comment out the nfs 
mount in my fstab then the system boots without hanging. (Interestingly 
nfs mount in fstab doesn't cause a hang without the bridge network setup 
being there as well so in my case it seems to require both factors 
together to trigger the hang).

Booting with mountnfs patched while the nfs mount and bridged network 
interface are in place also is successful so it looks like that patch 
does indeed fix the problem.

Thank you for the quick fix.
-J