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CentOS clone: 'LVM not ground found'

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2010-06-04
2013-04-05
  • Mike Sheinberg

    Mike Sheinberg - 2010-06-04

    I'm having some issues booting a clone-zilla'd CentOS x86 server that I moved from a single drive desktop to a RAID 5 server. It seems that everything got transferred over successfully but when I boot I get the following show-stopping error:

    Scanning logical volumes
    Reading all physical volumes. This may take a while…
    Activating logical volumes
    Volume group "VTPsystem" not found
    Creating root device.
    Mounting root filesystem.
    mount: could not find filesystem '/dev/root'
    SEtting up other filesystems.
    SEttuping up new root fs
    setuproot: moving /dev failed: no such file or directory
    no fstab.sys, mounting internal defaults.
    setuproot: error mounting /proc : no such file or directory
    setuproot: error mounting /sys : no such file or directory
    Switching to new root and running init.
    unmounting old /dev
    unmounting old /prov
    unmounting old /sys
    switchroot: mount failed: no such file or directory
    kernel panic - not syncing: Attempted to kill init!

    When I boot to the 'systemrescuecd' I'm able to mount and see my LVM file-systems ('VTPsystem') without any issues. And since it is booting the /boot partition from the RAID without issues I figured it wasn't the case that I'm missing any critical drivers. I saw some similar results from google and when I tried to follow one in particular to run mkinitrd I am getting errors when I boot into the CentOS rescue mode that 'partition is unreadable on the disk'. During the CentOS rescue mode it is noted that I'm unable to mount the /boot partition but I'm able to see the LVM without issues (weird, i know). Anyone have any good pointers on where to go from here - anyway I can rebuild the partition table without wiping anything?

    (results of fdisk -l from systemrescuecd):
    root@sysresccd /mnt/backup % fdisk -l

    WARNING: The size of this disk is 2.5 TB (2499946741760 bytes).
    DOS partition table format can not be used on drives for volumes
    larger than (2199023255040 bytes) for 512-byte sectors. Use parted(1) and GUID
    partition table format (GPT).

    Disk /dev/sda: 2499.9 GB, 2499946741760 bytes
    255 heads, 63 sectors/track, 303934 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x1549f232

       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1   *           1          13      104391   83  Linux
    /dev/sda2              14      121601   976655610   8e  Linux LVM

     
  • Steven Shiau

    Steven Shiau - 2010-06-08

    What are the results if you run:
    1. pvscan
    2. vgscan
    3. lvscan
    ?

    Are you able to mount the LV and read the files inside it?

    Steven.

     

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