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Old 01-14-2014, 03:54 PM   #1
Ricky
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Question What is causing this kernel panic..


Hi,
I have server which has Raid 1 hardware configuration. Lately it is not booting up, I got KVM access and got following screenshots:

http://i40.tinypic.com/sb31pt.jpg

http://i44.tinypic.com/25isw06.jpg

http://i43.tinypic.com/29ddaoi.jpg


So kernel panic is there before bunch of other errors. Can anyone tell me what exactly the error is about, is it that drive is failing but when you have Raid 1 , if one fails, other keep machine running..

Also, one other problem is that after kernel panic, I can't reboot system as in kernel crash case, this KVM doesn't take reboot (ctrl+alt+del) .. I have to ask datacenter guys to manually go and enter grub for me, that is now causing me and them trouble and they are insisting on reload of OS but I can't do as I still have some important data in it.. Since this is unmanaged server, this situation has really made things.. worst.

So I request fellow member to help me and give pointer about the solution without OS reload..
 
Old 01-14-2014, 09:16 PM   #2
berndbausch
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Quote:
Originally Posted by Ricky View Post
So kernel panic is there before bunch of other errors. Can anyone tell me what exactly the error is about, is it that drive is failing but when you have Raid 1 , if one fails, other keep machine running..
As far as I can see, this is the initial ram disk failing because it can't see the configured root device. It seems that the root device is defined via UUID in grub.conf; perhaps the UUID is wrong, or perhaps the problem is deeper and the RAID has a problem.

If you are able to interrupt the boot process before GRUB loads your system, you can try to change the grub configuration, for example by adding rdshell to the configuration as suggested by the dracut output.

Quote:
Also, one other problem is that after kernel panic, I can't reboot system as in kernel crash case, this KVM doesn't take reboot (ctrl+alt+del) .. I have to ask datacenter guys to manually go and enter grub for me, that is now causing me and them trouble and they are insisting on reload of OS but I can't do as I still have some important data in it.. Since this is unmanaged server, this situation has really made things.. worst.
 
Old 01-15-2014, 12:37 AM   #3
SAbhi
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Distribution: CentOS 6.5, SuSE SLED/ SLES 10.2 SP2 /11.2, Fedora 11/16
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well seeing "failed to read SCR" repeatedly, i dont know if this caused the panic but there's problem in reading the sata drive attached.
 
Old 01-15-2014, 03:39 AM   #4
Ricky
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Thats what I guessed, now how would I know which drive failed in it or it is both drives failed and I noticed too late ?
 
  


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