[Bug 383001] Re: booting live cd breaks intel matrix raid

[Philippe De Brouwer]

Same problem here ..

Linux: Ubuntu 10.04 with kernel 2.6.32-24-generic
on the following hardware:
Intel Core2 Quad Q9550 2,83 GHz (S775/45nm) BOX
4 Hitachi DeskStar 7K1000 1 TB (SATA II, NCQ) in bios raid 10 (fakeraid)
Gigabyte GA-X48-DS5

:-(

very sad that there is no solution yet.
The hdparm does not work 
(
the -N option reports the following
# hdparm -N /dev/sde
/dev/sde:
 max sectors   = 625142448/4385456(625142448?), HPA setting seems invalid (buggy kernel device driver?)

and for the raid device another message:
# hdparm -N /dev/mapper/isw_eaacehbjcf_Volume0

/dev/mapper/isw_eaacehbjcf_Volume0:
 HDIO_DRIVE_CMD(identify) failed: Inappropriate ioctl for device
)

Interesting is though that I used to have it working with Ubuntu 08.10
(Mint flavour). In that sense that a cold boot would always reset the
disks to "off-line member" ... but once Linux loaded, I could manually
mount the raid. Since I have Ubunty 10.04 this does not work any more.
After a cold boot (=power off) I have to start the system once and then
make a warm boot (reboot without power off) and then it will work.

Strange and disappointing ... especially that this only gets "medium" priority and is not even assigned to someone :-(
At least a warning message should appear BEFORE the liveCD boots in Ubuntu!
For the novice this will lead to serious disappointment and loss off data.

-- 
booting live cd breaks intel matrix raid
https://bugs.launchpad.net/bugs/383001
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