On Wed, 9 Jun 2010, Andrew Daviel wrote:
> On Thu, 13 May 2010, Yiorgos Adamopoulos wrote:
>
> > We manage ~100K mailboxes which will be migrated on new servers. The
> > mailbox format is mbx (expetced to change to mix after the migration)
> > and the Operating System will be Linux amd64. So, on what filesystem
> > would one place them? Currently we are thinking of putting them on
> > XFS.
>
> Some time back I did some benchmarks with "mailstone", and decided in the
> end to go with XFS on Linux. JFS was also fairly good. Now there is ext4;
> haven't tried that for mail, it's still somewhat experimental. I used it
> on Fedora 9 for a while but things crashed (possibly unrelated) and the
> absence of ext4 support in the rescue disk killed me. It did seem
> significantly faster than ext3.
>
> Since then, we tried using XFS on iSCSI which was a disaster, at least
> under RHEL 4.
FWFI, when we migrated our imap server off HP-UX, we went to
SuSE SLES running in a VM under VMware ESX4 with the storage as
iSCSI mounting as an XFS file system.
This worked reasonably well altho it did increase the CPU load.
We ran into one major manageability issue, a VMotion move failed
because of the amount of time it took to transfer the 24GB of RAM
caused enough iSCSI timeouts that the filesystem was dropped. ;(
So we are now presenting the iSCSI storage to the underlying ESX
server and mounting it as a VMDK in the virtual client (still XFS
file system).
--
Dave Funk University of Iowa
<dbfunk (at) engineering.uiowa.edu> College of Engineering
319/335-5751 FAX: 319/384-0549 1256 Seamans Center
Sys_admin/Postmaster/cell_admin Iowa City, IA 52242-1527
#include <std_disclaimer.h>
Better is not better, 'standard' is better. B{
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