topic "Kernel Panic - Not Syncing" - System Imager in Operating System - Linux

"Kernel Panic - Not Syncing" - System Imager

Bobin — Wed, 23 Feb 2011 04:22:24 GMT

Hi All,
I am trying to restore a golden image to a server using system imager and getting the below error after the PXE boot.
The image is for Red Hat 4 AS.

"UDF-fs: No partition found (1)
No filesystem could mount root, tried: cramfs msdos vfat iso9660 udf
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(1,0)"

Please let me know if anybody had faced this issue before and tried trouble shooting. Thanks in advance.

Re: "Kernel Panic - Not Syncing" - System Imager

Matti_Kurkela — Wed, 23 Feb 2011 11:28:43 GMT

Welcome to ITRC Forums!

The message indicates the kernel could not find anything that could serve as a root filesystem. Perhaps your PXE bootloader failed to load the initrd file?

(The presence of cramfs and the lack of ext2/ext3 or other unix-style filesystem types in the list of tried types suggests this message is emitted by a kernel that is looking for initrd but cannot find one.)

The PXE bootloader should have downloaded first the kernel file, then the initrd file. Look at the TFTP server logs: what was the name of the requested file, did the TFTP server look for it in the correct location, was the download successful?

MK

Re: "Kernel Panic - Not Syncing" - System Imager

Bobin — Thu, 24 Feb 2011 03:57:34 GMT

Hi MK,

Thank you for the warm welcome.

And to let you know, your clue worked out. It was indeed the initrd file which was causing the issue. The link pointing to initrd was just empty (just wondering how it happened). So we copied a new initrd file to the link and voila.. its picking the image. But now we are having trouble connecting back the SAN to it.. but that can be sorted out.

Thank you for the help. Much appreciated.