[Ocfs2-users] Success!

[Luis Freitas]

Brandon,
   
     Can you post details about the Disk layout you are using and disk models? (RAID5/RAID10, 15K RPM or 10K RPM, 36Gb or 76Gb, how many disks on each raid group)
   
  Best Regards,
Luis

Brandon Lamb <brandonlamb at gmail.com> wrote:
  Well today I did clean installs on 3 test machines.

For the server I used the openfiler (latest from sourceforge iso) as
the server os, using a 500 gig sata drive and exporting as iscsi.

I then installed CentOS 4.4 on two servers, ran the yum updates, and
then installed the ocfs2 kernel and tools, devel and debug rpms.

After my previous experience i was able to get up and going very
quickly since i didnt have to relearn how to do the iscsi stuff and
edit the ocfs2 config.

I havent had a chance to really test it yet as the machines just
finished updating awhile ago but they can mount the drive, so I am
excited at seeing some progress.

One one node I was able to do a copy from /tmp (hda3) of a 771 meg
maildir to the ocfs2 mount over iscsi. Took about 1 minute, using gige
(no jumbo frames, just a cheap switch).

I used the -T mail option for mkfs.ocfs2 and mounted with
_netdev,nointr in fstab.

I briefly went over our PRTG logs and it looks our current NFS server
that stores our mail data moves about 114 gigabytes a day of traffic
on our switch (total in and out). Doing simple math and not taking
into account spurts its about 1.6 megabytes per second I think, so I
am hoping this will work out quite well for us.

One thing I did notice is that the server (running openfiler) went up
to 7+ load. Im wondering/thinking of just reinstalling it with centos
and isntalling the iscsi-target from source (newer version i think).
This is a pentium d 3ghz, 8gig ram machine. I was supprised to see it
go to 7 with just 1 node copying data to it. But this is an iscsi
issue i assume so i'll mess with that plus network tuning.

All in all, I am happy with the results today, mostly because I have
had no crashes or errors or kernels panics/reboots or anything.

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