Man, that sounds like a bad personals ad.
Anyway, just getting into RAID. Non-critical home system that I just want
to play around on. It's an older 233MHz based system running IDE. In
otherwards, I'm not too concerned about performance. Though if I could
arrange things to not hurt performance, and perhaps even increase things,
that would be great.
Running 2.2.17 with software RAID patches.
Running 2 built in IDE controllers (Intel 430VX chipset, not that great,
but free), and an old AWE32 as a 3rd controller. As I said, I'm not in it
for the speed. On the other hand, I have these as my harddrives:
hda: Maxtor 91303D6, 12427MB w/512kB Cache, CHS=12624/32/63, (U)DMA
hdb: Maxtor 53073U6, 29311MB w/2048kB Cache, CHS=59554/16/63, (U)DMA
hdc: Maxtor 93652U8, 34837MB w/2048kB Cache, CHS=4441/255/63, (U)DMA
hdd: Maxtor 92048U8, 19470MB w/2048kB Cache, CHS=39560/16/63, (U)DMA
hdh: Maxtor 53073H6, 29311MB w/2048kB Cache, CHS=59554/16/63
Yeah. About 120G or so.
Anyway, I want to parition them into something like this:
/ 128M
/var 64M
/tmp 128M
/usr/tmp 128M
/var/tmp 128M (yeah, figured might as well keep all three separate)
/home 10G
/usr 10G
/var/spool/news 25G (leafnode mirror, don'tcha know)
/usr/src 15G
/usr/mirror 40G
/usr/music 13G
Plus probably 64M of swap on each physical drive.
Numbers don't quite add up. Probably extra to mirror.
Anyway, obviously I can't follow the recommended procedure of no slave
drives. So I'm going to face IDE contention. Probably best I can do is
reduce head movements.
I'm considering keeping /, /var, and {/usr,/var,}/tmp as non RAID.
Probably one per disk just to spread things out. Then taking the rest of
the disk space and using it with RAID.
The biggest question is, would it make more sense to spread everything out
across all 5 drives, or to go no more than 2-3 drives for a particular
partition? If no more than 2-3 drives, would it make sense to put say,
both as masters, or have 1 master, 1 slave for a particular md partition?
One thing I was considering was just dividing the disk into arbitrary
chunks of 1-2G. Then just piecing them together. Of course, partitions on
the same drive would be linear, then across drives would be raid-0. I was
considering doing it like this so that, if necessary, I could reassign
slabs and moves things around as necessary (after doing things like
resize2fs and mkraid). Would this be feasible (running out of md devices)?
Hurt performance (going through both raid0 and linear)? Too much like
micro managing and it's just not worth it?
Thanks!
mrc
--
Mike Castle Life is like a clock: You can work constantly
[EMAIL PROTECTED] and be right all the time, or not work at all
www.netcom.com/~dalgoda/ and be right at least twice a day. -- mrc
We are all of us living in the shadow of Manhattan. -- Watchmen
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