On 06/03/14 18:47, Les Mikesell wrote:
On Tue, Jun 3, 2014 at 7:09 AM, mark m.roth@5-cent.us wrote:
I had an old server die; we had another, same model, sitting around lightly used, so I did what I've done before: swap the RAID card into that, swap the drives, even putting them in the same bays as the dead one, and boot.
Nope. 100% of the time, when it hits switching roots, it kernel panics.
Adding rdshell to the kernel line does nothing, I get no grub rdshell. Booting from a flash drive into rescue, it finds everything, *perfectly*, and mounts it all, including the RAID data drives.
I've rebuilt the initrd, and no joy.
Anyone have an idea?
Did you try running "grub-install" after your rescue-mode boot and chroot into /mnt/sysimage? If that doesn't fix it there is probably something different about the device/naming of the root partition.
Put another drive in, and had all kinds of grief before, right before I left yesterday, it FINALLY came up. After disconnecting the RAID (I may have wiped one of the RAID devices - luckily this is a backup system). I'm guessing the damn thing, every time I changed drives, reenumerated, ignoring my previous settings, and deciding on its own what should should be the first drive. Wonder if the battery needs replacing....
Of course I tried grub-install. At least two tries, after pxebooting to linux rescue (and it would mount everything *perfectly*), I'd see root was /dev/sda... but grub-install announced that sda had no BIOS entry....
mark