Hi Gaspar,
I would certainly be sure to use the external journal. In order to do this
with our 3Ware RAID-5, take the resulting RAID (say /dev/sda) and partition
it with sda1 being around 256MB. Then create sda2 using the rest of the
data.
After that, I'd use the following command:
"mkfs.xfs -f /dev/sda2 -l logdev=/dev/sda1,size=32000b"
To mount this, I'd use "mount -t xfs /dev/sda2 -o logdev=/dev/sda1 /mnt".
I'm sure others have other ideas too.
-Mike
-----Original Message-----
From: linux-xfs-bounce@xxxxxxxxxxx [mailto:linux-xfs-bounce@xxxxxxxxxxx] On
Behalf Of Gaspar Bakos
Sent: Wednesday, January 14, 2004 8:52 PM
To: linux-xfs@xxxxxxxxxxx
Subject: Re: advice: 3ware+raid+xfs
Hi,
Some time ago I asked for advice regarding a 3ware + raid setup on XFS,
and I got a LOT of help, such as
- what kind of RAID is recommended,
- be careful with WD drives,
- use LVM2 + XFS, etc.
Finally I have all the 4x250Gb WD disks arranged in hardware RAID-5, and I
am ready to make xfs under RH9.0, kernel 2.4.23. I remember a discussion
on sunit, swidth, logsize, and external/internal log, and frankly, after
looking back to the messages, I feel confused.
I'd appreciate a little guidance on what exact options should I use with
mkfs.xfs, such as:
mkfs.xfs -d su=?,sw=? -l size=?,sunit=?? ...
What I know is that the hw RAID-5 stripe size is 64K. I have 4 disks =>
sw=3. I will have typically 8-16Mb files on the disk plus lots small files
(i.e. I can't specify well in advance).
Thanks,
Gaspar
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