Re: 2.6.16-1.2080_FC5 kernel panic (nv raid0, 86_64 architecture)

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On Thu, 2006-04-06 at 09:21 -0400, Debbie Deutsch wrote: 
> Terry Kemp wrote:
> > On Wed, 2006-04-05 at 20:15 -0400, Debbie Deutsch wrote:
> 
> [SNIP]
> 
> >> In any case, here is what my /etc/fstab file says.  (Note that I have
> >> adjusted the white spaces to help with readability.)
> >>
> >> /dev/VolGroup00/LogVol00 /              ext3    defaults        1 1
> >> LABEL=/boot              /boot          ext3    defaults        1 2
> >> devpts                   /dev/pts       devpts  gid=5,mode=620  0 0
> >> tmpfs                    /dev/shm       tmpfs   defaults        0 0
> >> /dev/VolGroup00/LogVol02 /home          ext3    defaults        1 2
> >> proc                     /proc          proc    defaults        0 0
> >> /dev/VolGroup00/LogVol03 /shared        ext3    defaults        1 2
> >> sysfs                    /sys           sysfs   defaults        0 0
> >> /dev/VolGroup00/LogVol01 swap           swap    defaults        0 0
> 
> [SNIP]
> 
> > 
> > OK our problems are a bit different (but probably attributed to the same
> > kernel issue).
> > Is this software Raid0?
> > Can you post the results of fdisk -l
> 
> The output of fdisk -l is as follows:
> 
> Disk /dev/sda: 320.0 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>    Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1          13      104391   83  Linux
> /dev/sda2              14       77826   625032922+  8e  Linux LVM
> 
> Disk /dev/sdb: 320.0 GB, 320072933376 bytes
> 255 heads, 63 sectors/track, 38913 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
> After providing the above results, fdisk complains that "Disk /dev/sdb
> doesn't contain a valid partition table".  That's not surprising.
> /dev/sda and /dev/sdb are the two hard drives that together comprise my
> system's RAID array.  It's RAID 0.  Although I have never before delved
> into how partition information is written to hard drives in a RAID 0
> array, it seems logical that it would go on the first drive and not be
> duplicated on the other(s).
> 
> Just for fun, I also ran fdisk -l on the the RAID device itself
> (/dev/mapper/nvidia_ehbjhcdb).  Here is its output.  This time there was
> no error message.
> 
> Disk /dev/mapper/nvidia_ehbjhcdb: 640.1 GB, 640145864704 bytes
> 255 heads, 63 sectors/track, 77826 cylinders
> Units = cylinders of 16065 * 512 = 8225280 bytes
> 
>                       Device Boot Start   End     Blocks   Id  System
> /dev/mapper/nvidia_ehbjhcdb1   *      1    13     104391   83  Linux
> /dev/mapper/nvidia_ehbjhcdb2         14 77826  625032922+  8e  Linux LVM
> 
> This looks fine to me, but as I have mentioned before, I am not an
> expert when it comes to how Linux structures and stores partition
> information.
> 
> Once again, thanks for your help.  It's very much appreciated.
> 
> Debbie

Sorry for the delay is responding... digest mode and crashed Winblows
server (raid problem hehe)

With LVM on Raid0 you have got a hard one to resolve!

I do remember having some problems with the device mapper on
2.6.15-1.2054_FC5. On 2.6.16-1.2080_FC5 there is
no /dev/mapper/nvidiaxxxxxx but if I reboot into the install 2054 kernel
I see /dev/mapper/nvidia_abaaggda. I am sure this is where the problem
is but whether its the kernel or dmraid I never found out. 

Having raid1 I was able to boot off 1 of the raid disks and ended up
backing out of raid all together. I did have a raid0 swap partition and
that would definitely not come up with the new kernel (or even a vanilla
kernel I built).

In my search for answers I stumbled across this...
http://www.fedoraforum.org/forum/archive/index.php/t-96108.html

maybe it will help.

Terry




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