On Tue, 27 Nov 2001, Dave Kleikamp wrote:
> This question came up in August, I think. There are no reports of any
> problem with software raid, but I don't know anyone that is actually
> running JFS on software raid either. I was hoping someone else who
> tried it would have responded by now. The FAQ is (was?) maintained by
As you can see from the output below, I'm running a 100% software raid and
JFS system. I'm using raid 1 and 0, with the root filesystem JFS and
raid1.
linux, lilo, raid, and jfs seem to all be very much happy with each other.
load testing and large file support testing haven't generated any errors
so far that I can find.
Also, due to the nature of this machine and what it will be eventually
used for, I'm running fsck.jfs on all filesystems at every single boot.
however, it only adds about 10 seconds to the total boot time. so it's not
an inconveniance.
here are the options I'm using in lilo:
append="root=/dev/md3"
boot=/dev/md3
raid-extra-boot=mbr-only
from my installation:
Linux smc01 2.4.16 #3 SMP Mon Nov 26 13:33:47 PST 2001 i686 unknown
[root@smc01 /root]# cat /etc/fstab
/dev/md3 / jfs defaults 1 1
/dev/md2 /var jfs defaults 1 0
/dev/md1 /boot jfs defaults 1 0
none /proc proc defaults 0 0
/dev/sda6 swap swap defaults 0 0
/dev/sdb6 swap swap defaults 0 0
/dev/md4 /u01 jfs defaults 1 0
[root@smc01 /root]# mount
/dev/md3 on / type jfs (rw)
none on /proc type proc (rw)
/dev/md2 on /var type jfs (rw)
/dev/md1 on /boot type jfs (rw)
/dev/md4 on /u01 type jfs (rw)
[root@smc01 /root]# df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/md3 4079732 3236136 843596 79% /
/dev/md2 262696 90460 172236 34% /var
/dev/md1 70896 13584 57312 19% /boot
/dev/md4 134105396 9914576 124190820 7% /u01
[root@smc01 /root]# cat /proc/mdstat
Personalities : [linear] [raid0] [raid1] [raid5] [multipath]
read_ahead 1024 sectors
md1 : active raid1 sdb5[1] sda5[0]
72128 blocks [2/2] [UU]
md2 : active raid1 sdb7[1] sda7[0]
264960 blocks [2/2] [UU]
md3 : active raid1 sdb8[1] sda8[0]
4096448 blocks [2/2] [UU]
md4 : active raid0 sdb9[1] sda9[0]
134142464 blocks 256k chunks
--
http://www.23.org/~chs/ --- AIM: bdsmchs --- ICQ: 8141565
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"And the rifle? Wouldn't go out naked of a rifle. When shoes and
clothes and food, when even hope is gone, we'll have the rifle."
--John Steinbeck
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