Hi at linux-raid
Now, my linux system is up and running, I'd like to thank Andrea
Arcangeli and Corin Hartland-Swann and Charles Wilkins for their
Contribution to this list.
Corin for the good documatiation of what patches to include (remember
www.linuxraid.org, I was able to create this patched kernel and it
works!)
Andrea for putting together the other patch (wich I later took because
of a feature Corin did not include...)
And Charles for the Conclusion of linux booting from raid.
Remarks for Charles:
1) your linux.conf only works if you have an untouched
master-boot-record wich
goes on to the first active partitition. If not, you need to setup a
second and third lilo.conf to create such a master-boot-record
2) I found out that running lilo.conf on a degenrated raid-array with
boot=/dev/md?
leaves an error accessing the set-faulty disk but on the running
raid-array it works properly. (I set up in degenerated mode preserving
the old raid system in case of problems)
3) I used lilo version 21.6 and it worked for me
My production maschine setup (until yesterday it ran 2.0.36 with raid
0.36.something for 2 years without problems and the partititoning was
from the old days where I had a initrd, raid-stop-patch and 2 different
/boot, hairy thing, that...)
PII 400, ASUS Motherboard with on-board ide and aic7xxx scsi, Ethernet
and isdn
2 identical 4GB scsi disks , a scsi tape and a scsi zip.
linux-2.2.18 with the aa2-Patch from Andrea Arcangeli applied
suse-linux 7.0 with updates from web.
/dev/md1 on /
/dev/md0 on /boot
/dev/md2 on /home
/dev/md3 on /var
# fdisk -l /dev/sda
Disk /dev/sda: 255 heads, 63 sectors, 555 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/sda1 * 1 2 16033+ fd Linux raid autodetect
/dev/sda2 3 11 72292+ 82 Linux swap
/dev/sda3 12 555 4369680 5 Extended
/dev/sda5 12 273 2104483+ fd Linux raid autodetect
/dev/sda6 274 486 1710890+ fd Linux raid autodetect
/dev/sda7 487 555 554210+ fd Linux raid autodetect
# fdisk -l /dev/sdb
Disk /dev/sdb: 255 heads, 63 sectors, 555 cylinders
Units = cylinders of 16065 * 512 bytes
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 2 16033+ fd Linux raid autodetect
/dev/sdb2 3 11 72292+ 82 Linux swap
/dev/sdb3 12 555 4369680 5 Extended
/dev/sdb5 12 273 2104483+ fd Linux raid autodetect
/dev/sdb6 274 486 1710891 fd Linux raid autodetect
/dev/sdb7 487 555 554211 fd Linux raid autodetect
# cat /proc/mdstat
Personalities : [raid1]
read_ahead 1024 sectors
md0 : active raid1 sdb1[1] sda1[0] 15936 blocks [2/2] [UU]
md1 : active raid1 sdb5[1] sda5[0] 2104384 blocks [2/2] [UU]
md2 : active raid1 sdb6[1] sda6[0] 1710784 blocks [2/2] [UU]
md3 : active raid1 sdb7[1] sda7[0] 554112 blocks [2/2] [UU]
unused devices: <none>
#cat /etc/raidtab
raiddev /dev/md1
raid-level 1
nr-raid-disks 2
persistent-superblock 1
chunk-size 4
device /dev/sda5
raid-disk 0
# failed-disk 0
device /dev/sdb5
raid-disk 1
#home
raiddev /dev/md2
raid-level 1
nr-raid-disks 2
persistent-superblock 1
chunk-size 4
device /dev/sda6
raid-disk 0
# failed-disk 0
device /dev/sdb6
raid-disk 1
#var
raiddev /dev/md3
raid-level 1
nr-raid-disks 2
persistent-superblock 1
chunk-size 4
device /dev/sda7
raid-disk 0
# failed-disk 0
device /dev/sdb7
raid-disk 1
I used a little linux system on a zip booting the pre-compiled kernel
from disk to set up the system, then I created and mounted the md?
devices and installed to a directory.
I will give feedback to the list if problems appear with this patched
kernel.
bye for now
Ulf
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