Hi Emilie,
Indeed, robinhood is not notified by Lustre in case of access, only for
changes
(actually it could, but it is not recommended on a production system, as
it would represent a huge flow of events).
This explains atime is outdated in rbh DB, unlike change time.
acces times in DB can be updated by scanning regularly your filesystem.
They are also refreshed when applying policy on entries.
You can see this outdated atime in rbh-find output, but don't worry,
atime is correctly handled when applying a policy (like rmdir):
robinhood refreshes its atime when it applies a policy to an entry
to ensure it perfectly respects the policy criteria on access times.
Regards,
Thomas
On 03/12/14 10:56, [email protected] wrote:
Hello to all,
I wanted to use rm policy and rbh-find based on last access criteria
and it appears that the access time is outdated on my test. I use
robinhood 2.5.0-0.beta1 version and Lustre 2.1 version.
I run the Lustre find command with an 30 days access time argument and
the same for rbh-find: i have not the same results, it seems that for
robinhood "access time" it's the same than "change time".
For example this file :
File: « /scratch//xxxxx/xxxxx/myfile-2765732 »
Size: 190852 Blocks: 376 IO Block: 2097152 fichier
Device: a2f3dcdch/2733890780d Inode: 144871533880362197 Links: 1
Access: (0644/-rw-r--r--) Uid: ( 1045/ xxxx) Gid: ( 300/ xxxxxx)
*Access: 2014-02-13* 14:26:42.000000000 +0100
Modify: 2014-01-28 12:58:22.000000000 +0100
*Change: 2014-02-05 *13:07:11.000000000 +0100
Birth: -
With the Lustre find command and the stat command, last access is
13/02/2014 but for Robinhood last acess with rbh-find command and the
database informations is 05/02/2014.
I saw on the documentation of the last version that the access time
could be outdated. But have you a way to fix it or a workaround to
suggest?
I have an another question: is anyone using robinhood with GPFS for rm
policy or quota alert? I might have to implement robinhood with GPFS,
so if someone have tips I'm interested.
Thanks by advance for your answer,
Emilie
--
Centre Informatique National de l'Enseignement Supérieur (CINES)
Département Calcul Intensif (DCI)
Tel : 33 4 67 141414
Fax : 33 4 67 523763
http://www.cines.fr
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