On Wed, Jun 20, 2012 at 10:06 AM, Arun Khan <knura9@xxxxxxxxx> wrote:
> On Wed, Jun 20, 2012 at 1:00 AM, <m.roth@xxxxxxxxx> wrote:
>
> .... snip ....
>
>> For one thing, edit grub.conf and get *rid* of that idiot rhgb and quiet,
>> so you can actually see what's happening. Sounds to me as though it's
>> trying to switch root to a real drive from the virtual drive of the ramfs,
>> and it's not working. One thing you *might* also try is before you boot,
>> edit the kernel line in grub, and add rdshell at the end, so you boot into
>> grub's rudimentary shell if/when it fails, and you can look around and
>> find what it's seeing.
>
>
> Will try your suggestion and report back.
As mentioned already there are no issues with both disks connected.
In this scenario, I have changed the "Partition ID" of the
partitionable RAID1 partitions /dev/md_d0p1 and /dev/md_d0p2 to 'fd'
and then rebooted the system (recall earlier these partitions had
Id=83).
I also made the suggested changes to /boot/grub/grub.conf by Mark
Rebooted the system with both disks connected - system boots fine.
Messages are displayed including the md driver binding /dev/sda and
/dev/sdb. The "root" device /dev/md_d0p1 is detected and it is
mounted on / and life is hunky dory.
Reboot the system with disk1 removed, the kernel boots, the 'md'
driver tries to bind sda. At this point the systems seems to hang
for a few seconds and then 'dracut' reports that it cannot find
/dev/md_dop1 (the root partition)
dracut Warning: No root device "block:/dev/md_d0p1" found
Console image pasted here <http://imagebin.org/217229>
In the "rdshell" environment I can see that /etc/mdadm.conf is defined
but beyond this I don't know what to look for.
Changing the Partition Id for the RAID1 partitions to 'fd' does not help.
Any further suggestions and/or comments?
-- Arun Khan
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