Hi, all. I'm using Kubuntu for a few years now. Distribution kernels
after vmlinuz-2.6.35-28-generic fail to properly detect the Intel
Software Raid (isw) 2 SATA disk stripe volume I have, and since my root
FS is there, booting halts. Warm reboot then leaves my disks in a messed
up offline state (according to BIOS). Only cold restart brings them back
to life. The only way to correctly boot the PC is to first boot into
vmlinuz-2.6.35-28-generic, which correctly recognises & initialises my
disk setup, and then do a warm reboot into 3.0, 3.2, 3.10 kernel or
whatever. Which I've been doing for the past 2 years. I also tried
grabbing 3.10 vanilla sources from kernel.org, built the kernel, but
alas, same failing to find root fs. Both kernels are booted as: "Kernel
command line: root=/dev/mapper/vg0-root ro quiet splash" (where vg0-root
is my root FS logical volume).
I'm no kernel hacker, but having analyzed dmesg output from running both
kernels, it appears device-mapper broke compatibility in the newer version.
3.2.0-54-generic kernel (failing to properly boot after cold reboot):
[ 0.743048] device-mapper: uevent: version 1.0.3
[ 0.743131] device-mapper: ioctl: 4.22.0-ioctl (2011-10-19)
initialised: dm-devel@xxxxxxxxxx
[ 8.760596] device-mapper: dm-raid45: initialized v0.2594b
[ 13.138634] device-mapper: multipath: version 1.3.1 loaded
2.6.35 kernel (working after cold/warm reboot):
[ 0.634400] device-mapper: uevent: version 1.0.3
[ 0.634526] device-mapper: ioctl: 4.17.0-ioctl (2010-03-05)
initialised: dm-devel@xxxxxxxxxx
[ 0.634645] device-mapper: multipath: version 1.1.1 loaded
[ 0.634691] device-mapper: multipath round-robin: version 1.0.0 loaded
[ 4.378056] device-mapper: dm-raid45: initialized v0.2594b
[ 5.281816] device-mapper: ioctl: device doesn't appear to be in the
dev hash table.
[ 9.083852] device-mapper: table: 252:6: dm-2 too small for target:
start=218129509, len=1701990410, dev_size=48821472
[ 9.085147] device-mapper: table: 252:7: dm-2 too small for target:
start=218129509, len=1701990410, dev_size=48821472
[ 9.104142] device-mapper: table: 252:7: dm-2 too small for target:
start=729050177, len=543974724, dev_size=48821472
[ 9.104697] device-mapper: table: 252:6: dm-2 too small for target:
start=729050177, len=543974724, dev_size=48821472
[ 9.123294] device-mapper: table: 252:6: dm-2 too small for target:
start=2692939776, len=51635, dev_size=48821472
[ 9.123776] device-mapper: table: 252:7: dm-2 too small for target:
start=2692939776, len=51635, dev_size=48821472
(still working fine)
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