[Lustre-discuss] Problem mounting: sh: debugfs: command not found

[Miguel Oliveira]

Hi all,

I have a very strange behavior in my cluster. On the first OSS when I  
try to mount an OST a get a clean mount:

[root at lustre01 ~]# mount /lustre/ost0
[root at lustre01 ~]#

However on the second OSS (identical in every way to the first, same  
hardware, same config) I get:

[root at lustre02 ~]# mount /lustre/ost0
    sh: debugfs: command not found
mount.lustre: Unable to dump CONFIGS dir (32512)
[root at lustre02 ~]#

The debugfs command is there and is accessible.... An strace to the  
command is not terribly clear on what is going on:

.
.
.
stat("/sbin/mount.lustre", {st_mode=S_IFREG|0755, st_size=31400, ...})  
= 0
clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID| 
SIGCHLD, child_tidptr=0x2af148a4d000) = 24820
wait4(-1,    sh: debugfs: command not found
mount.lustre: Unable to dump CONFIGS dir (32512)
[{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 24820
--- SIGCHLD (Child exited) @ 0 (0) ---
exit_group(0)

The mount command works and the filesystem is working (to my  
knowledge). Does anyone know what this is and if it is important?

Cheers,

Miguel Afonso Oliveira