boot fails incrementally starting raid arrays

boot fails incrementally starting raid arrays

[Steven]

Hello Guy's,

i recently setuped a small ubuntu 14.4 Server, with 1x SSD Drive (Ubuntu 
installation on it) and 2x 3TB HDD drive, wich i combined to a Raid1 
with mdadm (File Shares are on the Raid).

now sometimes (arround every 3 time) i reboot, the Server hangs on boot:

|incrementally starting raid arrays
mdadm: Create user root not found
mdadm: create group disk not found
incrementally started raid arrays|

these 4 lines keep repeating ( i waited arround 10 mins) if i reboot 
with ctrl + alt + del, the sever starts normal.
If i look at the raid with  "|mdadm --detail /dev/md0" everything looks ok.

as i'M just a linux beginer and didn't find anything related to that 
error on the web, im really desperate.

As far as i figured the problem out, something within the initramfs 
seems to go wrong?
I allready tried to add these boot options to Grub
bootdegraded=true
raid=noautodetect

didn't help.

Maybe anyone here can help me out?

regards
Steven
|

Re: boot fails incrementally starting raid arrays

[Stan Hoeppner]

On 5/11/2014 1:31 PM, Steven wrote:
> Hello Guy's,
> 
> i recently setuped a small ubuntu 14.4 Server, with 1x SSD Drive (Ubuntu
> installation on it) and 2x 3TB HDD drive, wich i combined to a Raid1
> with mdadm (File Shares are on the Raid).
> 
> now sometimes (arround every 3 time) i reboot, the Server hangs on boot:
> 
> |incrementally starting raid arrays
> mdadm: Create user root not found
> mdadm: create group disk not found
> incrementally started raid arrays|
> 
> these 4 lines keep repeating ( i waited arround 10 mins) if i reboot
> with ctrl + alt + del, the sever starts normal.
> If i look at the raid with  "|mdadm --detail /dev/md0" everything looks ok.
> 
> as i'M just a linux beginer and didn't find anything related to that
> error on the web, im really desperate.
> 
> As far as i figured the problem out, something within the initramfs
> seems to go wrong?
> I allready tried to add these boot options to Grub
> bootdegraded=true
> raid=noautodetect
> 
> didn't help.

You're not booting the OS from the md array, but from a single SSD,
thus nothing about the array is needed in grub nor in the initrd image.
 The array should be started via post-boot scripts.

Cheers,

Stan