Re: kernel panic booting from raid5 with external log

[Stephen Lord <lord@sgi.com>]

Ingo Juergensmann wrote:

>On Sat, Mar 02, 2002 at 08:55:04AM -0500, Martin K. Petersen wrote:
>
>>Ingo> Kernel panic when mounting rootfs: root fs uses a external log
>>Ingo> and I should specify where the external logdev is within my
>>Ingo> mount command - but how?!
>>You need to add logdev=/dev/foo to the mount options.
>>
>
>Ok, but tell me where or how?
>I mean there is already a logdev=/dev/sde2 option in /etc/fstab, but how can
>kernel read /etc/fstab when it is unable to mount rootfs on /?
>
>Booting from auxiallary disk and mounting the raid by hand with appropriate
>mount option actually works, but that was not my point.
>
>>Ingo> I've put my nose into man lilo.conf, man mkfs.xfs and
>>Ingo> Boot-Howtos but found nothing that could help me.
>>man mount
>>
>
>man mount was too obvious for me, so I omitted this in my list of read man
>pages. Sorry, my fault.
>
>man rdev shows that option ro is currently the only option that can be
>passed to kernel for boot time.
>
>So, it seems as if one can not use a raid5 on / with a external logdev. Is
>this right?
>
Try passing mount options into the rootfs using the rootflags= boot option.

Steve