[Pvfs2-users] Bad File Entries in PVFS2... is it safe to upgrade Berkeley DB?

Angel de Vicente angelv at iac.es
Thu Mar 24 08:32:03 EST 2011


Hi,

I sent this to the Rocks mailing list, but nobody there was able to give 
me an answer. Do you know if this could solve these problems? Current 
BDB version is db4-4.3.29-10.el5_5.2. I was hoping to upgrade, perhaps 
to 4.8.30. Any comments? Should I then recompile PVFS?

Cheers,
Ángel de Vicente

-------- Original Message --------
Subject: Bad File Entries in PVFS2... is it safe to upgrade Berkeley DB 
in Rocks 5.4?
Date: Thu, 03 Mar 2011 15:01:53 +0000
From: Angel de Vicente <angelv at iac.es>
To: Discussion of Rocks Clusters <npaci-rocks-discussion at sdsc.edu>

Hi,

after intensive use of the PVFS2 system in our cluster, we have many
files like:

[callende at diodo hyd0022.bug]$ ls -lt dir1258/
total 0
?--------- ? ? ? ?            ? log2
[callende at diodo hyd0022.bug]$

These files are really stubborn and there doesn't seem to be any easy
way of removing them, since apparently they don't actually exist. This
is not a new problem with PVFS2 (see
http://www.mail-archive.com/pvfs2-developers@beowulf-underground.org/msg02878.html), 

and so far the only suggestion that I've seen to improve the situation
is to upgrade Berkeley DB
(http://www.mail-archive.com/pvfs2-developers@beowulf-underground.org/msg02920.html).

Can I upgrade Berkeley DB without breaking anything else in the cluster.
Will I have to recompile PVFS2? Has anyone tried this before?

Cheers,
Ángel de Vicente
-- 
http://www.iac.es/galeria/angelv/

High Performance Computing Support PostDoc
Instituto de Astrofísica de Canarias
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