Ubuntu boot up - software RAID not assembled, LV not found
We have a really old physical Ubuntu server that no longer boots up into the OS. The errors on boot up are:
"Volume group "volgrp01" not found"
"mount: could not find filesystem '/dev/root'"
which eventually result in a Kernel panic.
The system uses software RAID 1 with 2 physical disks
/dev/md0 uses sda2 and sdb2
The array md0 contains logical volumes for /root, /home, /opt, /tmp
The md0 array doesn’t appear to be assembled/started on boot (I think this is the main issue)
I can boot up to a Linux Live CD and assemble the md0 array and everything looks fine. It previously was degraded and reported sdb2 as missing….but I was able to add it back to the array and let it rebuild
/boot isn’t on the software RAID, but is on /dev/sda1 and /dev/sdb1
I’m not really sure how to get the md0 RAID array to be assembled/started on boot, but I think if I can get that figured out it will fix the server. I’m not sure if the problem is with something like Grub or initramfs? My Linux skills are a little rusty - any help would be appreciated.
"Volume group "volgrp01" not found"
"mount: could not find filesystem '/dev/root'"
which eventually result in a Kernel panic.
The system uses software RAID 1 with 2 physical disks
/dev/md0 uses sda2 and sdb2
The array md0 contains logical volumes for /root, /home, /opt, /tmp
The md0 array doesn’t appear to be assembled/started on boot (I think this is the main issue)
I can boot up to a Linux Live CD and assemble the md0 array and everything looks fine. It previously was degraded and reported sdb2 as missing….but I was able to add it back to the array and let it rebuild
/boot isn’t on the software RAID, but is on /dev/sda1 and /dev/sdb1
I’m not really sure how to get the md0 RAID array to be assembled/started on boot, but I think if I can get that figured out it will fix the server. I’m not sure if the problem is with something like Grub or initramfs? My Linux skills are a little rusty - any help would be appreciated.
mdadm 0.9 can be auto-assembled by the kernel.
later version need to be assembled using mdadm (from an initramfs f.e.).
later version need to be assembled using mdadm (from an initramfs f.e.).
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If /sdb2 was reported as missing, I would presume that it was actually sdb that was missing, and the miroring between sdb1 and sdb2 was also impacted.
Does /etc/fstab exist on both sda1 and sdb1 ?
If /etc/fstab exist on both sda1 and sdb1 are the files the same ?