RAID1 broken 2.2.12 -> 2.2.16??

From: Robert Dale (rdale@digital-mission.com)
Date: Mon Jul 10 2000 - 21:15:28 EST

Scenario:

Booting 2.2.12 with raid1 as a module via initrd off of non-RAID /boot.
The only things in initrd are 'sh', 'insmod', and 'raid1.o'.
(boot log at bottom)

Upgrade to 2.2.16 with built-in raid1 and it breaks with this:
md driver 0.36.6 MAX-MD_DEV=4, MAX_REAL=8
raid1 personality registered
partition check:
hda: hda1 hda2 hda4 < hda5 hda6 hda7 hda8 hda9 hda10 >
hdc: hdc1 hdc2 hdc4 < hdc5 hdc6 hdc7 hdc8 hdc9 hdc10 >
Oops! md0 not running, giving up!
Bad md_map in ll_rw_block
EXT2-fs: unable to read superblock
Oops! md0 not running, giving up!
Bad md_map in ll_rw_block
isofs_read_super: bread failed, dev=09:00, iso_blknum=16, block=32
kernel panic: VFS: Unable to mount roo fs on 09:00

One interesting thing of note is the md driver version went from 0.90.0
in 2.2.12 _down_ to 0.36.6 in 2.2.16!

-------
Boot log from 2.2.12:
md driver 0.90.0 MAX_MD_DEVS=256, MAX_REAL=12
md.c: sizeof(mdp_super_t) = 4096
partition check:
hda: hda1 hda2 hda4 < hda5 hda6 hda7 hda8 hda9 hda10 >
hdc: hdc1 hdc2 hdc4 < hdc5 hdc6 hdc7 hdc8 hdc9 hdc10 >
autodetecting RAID arrays
 (read) hda5's sb offset: 524544 [events: 0000001f]
 (read) hda6's sb offset: 2097536 [events: 0000001f]
 (read) hda7's sb offset: 2097536 [events: 0000001f]
 (read) hda8's sb offset: 524544 [events: 0000001f]
.
.
.
 (read) hdc10's sb offset: 7307392 [events: 00000008]
autorun ...
considering hdc10 ...
(and so on...)
-------
-------
lilo.conf:
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
prompt
timeout=50
read-only
root=/dev/md0

image=/boot/linux-2.2.16
label=2.2.16

image=/boot/vmlinuz-2.2.12-20
        label=linux
        initrd=/boot/initrd-2.2.12-20.img
-------

TIA for any insight. 

-- 
Robert Dale

                   Digital Mission

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This archive was generated by hypermail 2b29 : Sat Jul 15 2000 - 21:00:12 EST