[Lustre-discuss] Remove filesystem directories from MDT

[Dilger, Andreas]

 I assume it is not a symlink to itself like:

vm-106-disk-1.raw -> .

or something?

That said, there is something wrong with that directory. It should not have any objects assigned to it if it is a directory, only if it is a regular file. 

You could check on OST0013 (decimal 19) to see if object 7329413 belongs to the specified "file":

  debugfs -c -R "stat /O/0/d$((7329413 % 32))/7329413"

It should print out the MDS parent inode number, assuming that object exists. 
 
Cheers, Andreas

> On May 26, 2014, at 13:21, "Pardo Diaz, Alfonso" <alfonso.pardo at ciemat.es> wrote:
> 
> Hello,
> 
> 
> I have some problems in my filesystem. When I browse the filesystem from a client, a specific directory have directories that contain the same directories, in other words:
> 
> LustreFS-> dir A -> dir B -> dir B -> dir B -> dir B -> dir B…
> 
> This directory, and its children, has the same obdidx/objid:
> 
> 
> [root at client vm-106-disk-1.raw]# lfs getstripe vm-106-disk-1.raw
> 
> vm-106-disk-1.raw/vm-106-disk-1.raw
> lmm_stripe_count:   1
> lmm_stripe_size:    1048576
> lmm_pattern:        1
> lmm_layout_gen:     0
> lmm_stripe_offset:  19
>        obdidx           objid           objid           group
>            19         7329413       0x6fd685                0
> [root at client vm-106-disk-1.raw]# cd vm-106-disk-1.raw/
> [root at client vm-106-disk-1.raw]# pwd
> /mnt/data/106/GNUSparseFile.2227/vm-106-disk-1.raw/vm-106-disk-1.raw/vm-106-disk-1.raw
> [root at client vm-106-disk-1.raw]# lfs getstripe vm-106-disk-1.raw
> 
> vm-106-disk-1.raw/vm-106-disk-1.raw
> lmm_stripe_count:   1
> lmm_stripe_size:    1048576
> lmm_pattern:        1
> lmm_layout_gen:     0
> lmm_stripe_offset:  19
>        obdidx           objid           objid           group
>            19         7329413       0x6fd685                0
> 
> [root at client vm-106-disk-1.raw]# cd vm-106-disk-1.raw/
> [root at client vm-106-disk-1.raw]# pwd
> /mnt/data/106/GNUSparseFile.2227/vm-106-disk-1.raw/vm-106-disk-1.raw/vm-106-disk-1.raw/vm-106-disk-1.raw
> [root at client vm-106-disk-1.raw]# lfs getstripe vm-106-disk-1.raw
> 
> vm-106-disk-1.raw/vm-106-disk-1.raw
> lmm_stripe_count:   1
> lmm_stripe_size:    1048576
> lmm_pattern:        1
> lmm_layout_gen:     0
> lmm_stripe_offset:  19
>        obdidx           objid           objid           group
>            19         7329413       0x6fd685                0
> 
> But when I mount the MDT with “Ldiskfs” I can see correctly the filesystem in the “ROOT” mdt directory.
> 
> I wish to remove from the client this looped directory (dir B in the example), but when I try to remove I get a “kernel panic" in the MDS/MGS.
> 
> is it a good idea remove a subdirectory in the MDT (with Ldiskfs mounted) in the “ROOT” mdt directory or I will get orphan objects in the OST, if I remove this directory in the MDT?
> 
> 
> 
> Thanks!!!
> 
> 
> 
> 
> Alfonso Pardo Diaz
> System Administrator / Researcher
> c/ Sola nº 1; 10200 Trujillo, ESPAÑA
> Tel: +34 927 65 93 17 Fax: +34 927 32 32 37
> 
> 
> 
> 
> ----------------------------
> Confidencialidad: 
> Este mensaje y sus ficheros adjuntos se dirige exclusivamente a su destinatario y puede contener información privilegiada o confidencial. Si no es vd. el destinatario indicado, queda notificado de que la utilización, divulgación y/o copia sin autorización está prohibida en virtud de la legislación vigente. Si ha recibido este mensaje por error, le rogamos que nos lo comunique inmediatamente respondiendo al mensaje y proceda a su destrucción.
> 
> Disclaimer: 
> This message and its attached files is intended exclusively for its recipients and may contain confidential information. If you received this e-mail in error you are hereby notified that any dissemination, copy or disclosure of this communication is strictly prohibited and may be unlawful. In this case, please notify us by a reply and delete this email and its contents immediately. 
> ----------------------------
> 
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss