[Lustre-discuss] Unable to write to filesystem (device full)

[Jakob Goldbach]

> # mount
> ...<snip>...
> /dev/vg-localdisk/mdt on /mnt/lustre/mdt type lustre (rw,noauto,_netdev)
> # cd /mnt/lustre/mdt/
> -bash: cd: /mnt/lustre/mdt/: Not a directory
> 

Seems you didn't mount with -t ldiskfs as described (but with -t lustre)

The latter starts lustre services and then blocks acces to the
mountpoint.