Lustre discuss - Sep 2009 - Problem mounting: sh: debugfs: command not found

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

On Sep 03, 2009  12:33 +0100, Miguel Oliveira wrote:
> 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:
It isn''t in your PATH?

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.