Grub (in the menu) has the following commands:
root (hd0,1)
kernel /vmlinuz-2.6.32-279.el6.x86_64 ro
root=/dev/mapper/vg_resolve02-lv_root rd_NO_LUKS LANG=en.US.UTF-8
rd_NO_MD crashkernel=128M rd_LVM_LV=vg_resolve02/lv_root
SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb
quiet pcie_aspm=off
When I successfully booted manually, I removed "rhgb quiet" and added
"rdshell" to that line.
To the best of my memory, that line is stock, I don't recall ever
changing it permanently.
The names of the volume group and logical volume in that line correspond
to my actual root device.
--
Joakim Ziegler - Supervisor de postproducción - Terminal
joakim@xxxxxxxxxxxxxx - 044 55 2971 8514 - 5264 0864
On 22/03/13 21:33, Barry Brimer wrote:
>> When I booted the box after this, I got a kernel panic, the typical
>> "Can't find root device".
>
>> Reading https://fedoraproject.org/wiki/How_to_debug_Dracut_problems , I
>> did the following:
>>
>> # lvm vgscan
>> # lvm vgchange -ay
>>
>> And then
>>
>> # ln -s /dev/mapper/<volumegroup>-<root_volume> /dev/root
>> # exit
>>
>> After this, the box boots up normally, and everything works as it
>> should. However, when I reboot, it again fails to find the root device.
>>
>> So, after all this, my question is, how do I make Dracut (I'm assuming)
>> understand that this LVM volume is my root device and pick it up
>> automatically?
>
> What does your kernel line in grub look like?
>
> Barry
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