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Thread: Getting comfused by LVM

  1. #1
    Join Date
    Jan 2007
    Posts
    4

    Default Getting comfused by LVM

    I did a fresh install of FC6, but when I did it I didn't reformat my LVM partitions.

    I'm now having trouble mounting that partition.

    I think I can't see the forest for the trees, but I'm not sure what to do next.

    Here is some info:
    Code:
    [root@MythBox MythTV]# /usr/sbin/lvdisplay
      --- Logical volume ---
      LV Name                /dev/VolGroup01/LogVol00
      VG Name                VolGroup01
      LV UUID                ID21jn-Rvdz-EwKu-T96c-Vi2H-Wpav-Nf69zE
      LV Write Access        read/write
      LV Status              available
      # open                 0
      LV Size                453.34 GB
      Current LE             14507
      Segments               2
      Allocation             inherit
      Read ahead sectors     0
      Block device           253:0
    
    [root@MythBox MythTV]# /usr/sbin/vgdisplay
      --- Volume group ---
      VG Name               VolGroup01
      System ID
      Format                lvm2
      Metadata Areas        2
      Metadata Sequence No  2
      VG Access             read/write
      VG Status             resizable
      MAX LV                0
      Cur LV                1
      Open LV               0
      Max PV                0
      Cur PV                2
      Act PV                2
      VG Size               453.41 GB
      PE Size               32.00 MB
      Total PE              14509
      Alloc PE / Size       14507 / 453.34 GB
      Free  PE / Size       2 / 64.00 MB
      VG UUID               CdQ1Kq-63P9-ZdJ7-ZOTf-tSaB-B8rg-2YNHUV
    
    [root@MythBox MythTV]# /usr/sbin/pvdisplay
      --- Physical volume ---
      PV Name               /dev/hda5
      VG Name               VolGroup01
      PV Size               173.99 GB / not usable 22.15 MB
      Allocatable           yes
      PE Size (KByte)       32768
      Total PE              5567
      Free PE               2
      Allocated PE          5565
      PV UUID               ReqZAk-1o5w-5EE3-9qj5-78Rh-c6ew-vc7Anw
    
      --- Physical volume ---
      PV Name               /dev/hdb1
      VG Name               VolGroup01
      PV Size               279.46 GB / not usable 21.63 MB
      Allocatable           yes (but full)
      PE Size (KByte)       32768
      Total PE              8942
      Free PE               0
      Allocated PE          8942
      PV UUID               YSv0TY-2rPn-Edh0-lzSS-ka3u-jTp4-q8IGWF
    
    [root@MythBox MythTV]# cat /etc/fstab
    LABEL=/                 /                       ext3    defaults        1 1
    LABEL=/boot1            /boot                   ext3    defaults        1 2
    devpts                  /dev/pts                devpts  gid=5,mode=620  0 0
    tmpfs                   /dev/shm                tmpfs   defaults        0 0
    proc                    /proc                   proc    defaults        0 0
    sysfs                   /sys                    sysfs   defaults        0 0
    LABEL=SWAP-hda3         swap                    swap    defaults        0 0
    What do I need to do to be able to mount this partition?

  2. #2
    Join Date
    Nov 2006
    Location
    Seattle
    Posts
    305

    Default

    Try to activate the volume group, then mount one of its logical volumes (in this case /dev/VolGroup01/LogVol00):
    Code:
    vgchange -a y VolGroup01
    mkdir /mnt/oldLV
    mount /dev/VolGroup01/LogVol00 /mnt/oldLV
    Post if that gives errors. The best set of LVM instructions I've ever found is here:
    http://tldp.org/HOWTO/html_single/LVM-HOWTO/
    Last edited by joshuapurcell; 03-15-2007 at 04:00 PM. Reason: Fixed the inconsistent mount point.

  3. #3
    Join Date
    Jan 2007
    Posts
    4

    Default

    Quote Originally Posted by joshuapurcell View Post
    Post if that gives errors. The best set of LVM instructions I've ever found is here:
    http://tldp.org/HOWTO/html_single/LVM-HOWTO/
    Sweet.

    Ya know, I have been on that page and it never clued in that I was missing the activate. I also didn't recognize that I needed to do the mkdir before I could mount (*slaps palm to forehead*)

    Awesome - now to (re-)install MythTV

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