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Re: recommended raidtab ???

To: Steve Lord <lord@xxxxxxx>
Subject: Re: recommended raidtab ???
From: Seth Mos <knuffie@xxxxxxxxx>
Date: Fri, 14 Dec 2001 23:18:28 +0100
Cc: anil@xxxxxx, linux-xfs@xxxxxxxxxxx
In-reply-to: <1008368042.21647.18.camel@xxxxxxxxxxxxxxxxxxxx>
References: <4.3.2.7.2.20011214230151.02c95c88@xxxxxxxxxxxxx> <4.3.2.7.2.20011214230151.02c95c88@xxxxxxxxxxxxx>
Sender: owner-linux-xfs@xxxxxxxxxxx
At 16:14 14-12-2001 -0600, Steve Lord wrote:
On Fri, 2001-12-14 at 16:05, Seth Mos wrote:

>
> mkfs.xfs has some knowledge about software raid modules and will
> automagically do this for you.
> If you are going to have lot's of files and creating deleting it might be
> worth something to mkfs.xfs your fs with mkfs.xfs -l size=32768 /dev/foo
> and mount that raid with logbufs=8 if you have a lot of memory.

Note that logbufs=2 is the default and consumes 64K of memory for
logbuffers for the fs. logbufs=8 will consume 256K, so it depends
on your definition of lots of memory.

Way back I used to be able to fail a box with logbufs=8 and 256MB ram. Might have to adjust that then :) sorry bout that.

Cheers

--
Seth
Every program has two purposes one for which
it was written and another for which it wasn't
I use the last kind.


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