lvm2 notes

One of my boxes crashed, and would kernel panic on boot. It turned out to be an issue with the upgraded kernel, but before I figured that out I did some playing with lvm in knoppix.

root@3[~]# lvscan
  inactive          '/dev/VolGroup00/LogVol01' [5.84 GB] inherit
  inactive          '/dev/VolGroup00/LogVol03' [219.91 GB] inherit
  inactive          '/dev/VolGroup00/LogVol02' [5.84 GB] inherit
  inactive          '/dev/VolGroup00/LogVol00' [1.00 GB] inherit

root@3[~]# pvdisplay
  --- Physical volume ---
  PV Name               /dev/hda2
  VG Name               VolGroup00
  PV Size               232.62 GB / not usable 0   
  Allocatable           yes 
  PE Size (KByte)       32768
  Total PE              7444
  Free PE               1
  Allocated PE          7443
  PV UUID               JnTR2m-XuJh-ddhr-Alr5-UCZz-3m9V-rausR0

root@3[~]# vgdisplay
  --- Volume group ---
  VG Name               VolGroup00
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  5
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                4
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               232.62 GB
  PE Size               32.00 MB
  Total PE              7444
  Alloc PE / Size       7443 / 232.59 GB
  Free  PE / Size       1 / 32.00 MB
  VG UUID               ChwLAR-5vp4-WWYX-SYi5-1nFS-KqT8-M0ofxk
   
root@3[~]# vgchange -a y
  4 logical volume(s) in volume group "VolGroup00" now active

root@3[~]# lvscan
  ACTIVE            '/dev/VolGroup00/LogVol01' [5.84 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol03' [219.91 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol02' [5.84 GB] inherit
  ACTIVE            '/dev/VolGroup00/LogVol00' [1.00 GB] inherit