Which filesystem to use with cyrus

Andrew Koros akoros at ke.uu.net
Tue May 20 01:58:37 EDT 2003

If you are using postfix with cyrus then it's advisable that you create
a seperate /var/spool/postfix partition.

It is also recommended that you use seperate physical disks for
/var/lib/imap and /var/spool/imap. On the other hand if it is not
possible then use the fastest disk you have for /var/spool/imap and

THen mount /var/spool/postfix in data=journal,noatime (full journal mode
and noatime.

And mount /var/spool/imap and /var/lib/imap with noatime option and
data=ordered mode (the default)

Optionally in addition to the above settings,  do 
"chattr -R -S /var/spool/postfix"

Fo more information look at:

     1. Postfix on an ext3 filesystem
     2. Advanced filesystem implementor's guide, Part 8 "Surprises in
        ext3" http://www-106.ibm.com/developerworks/linux/library/l-fs8/

On Mon, 2003-05-19 at 20:04, Alessandro Oliveira wrote:
> Hi,
> I have a dell 2600 server with 1Gb of RAM and 2 disk arrays, one with 3 
> 36Gb disks and the other with 3 73Gb disks for the (140Gb) /var/spool 
> filesystem, I'm using ext3 in all partitions, but I think that ext3 
> makes /var/spool unecessarily slow, and I'd like to know which 
> filesystem is better to use in this case, or even better which 
> parameters I could change in order to improve performance. I'm using Red 
> Hat Linux 7.3 with all the latest patches, including kernel-2.4.20 from 
> redhat.
Andrew Koros
Developer, Systems Services
UUNET (Kenya) Ltd
Tel: +254 2 69088618
Fax: +254 2 69088001
Email: akoros at ke.uu.net   

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