From: Taylor, David (DTaylor@WBMI.COM)
Date: Thu Dec 18 2003 - 12:43:50 EST
Marcelino,
The MIND mount options allows for multiple indirect-inode blocks. The
only reason that you may want to use this is for a file-system that has
a HUGE amount of relatively small ( >32K - <1MB) files. Any file that
is greater than 32K requires an indirect-inode to address its contents.
If you run out of indirect-inodes the symptoms would be an "out of
memory" error and your files being truncated to exactly 32K.
I ran into this problem with a disk cache that sits in front of an
optical jukebox that is used for imaging/work-flow.
HTH
David Taylor
Senior Software Systems Engineer
West Bend Mutual Insurance
(262) 335-7077
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
Marcelino Mata
Sent: Thursday, December 18, 2003 10:56 AM
To: aix-l@Princeton.EDU
Subject: indirect JFS mount
We use Netbackup to backup our AIX server and we are encountering
problems which Veritas says can be fixed by us changing our JFS mount
option to "multiple indirect addressing". Using a command like this
"chfs -a options=rw,mind /fsname".
I am concerned about any negative aspects of changing the default mount
options on a production server. I have a very low confidence level with
Veritas's knowledge of AIX filesystems. Has anyone else made changes to
their systems and can they comment on the pro's and cons' of indirect
mount options?
Marcelino
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