[[CentOS]] [[LVM]]
Summary:
- df -h
  - find the volume that needs expanding
    - /dev/mapper/Volume00-mailman_lv
    - 94G 89G 564M 100% /mailman
- lvdisplay
  - find the real name
    - —- Logical volume —-
    - LV Name /dev/Volume00/mailman_lv
    - VG Name Volume00
    - LV UUID Q3hRqJ-e7mz-M9ae-RKZb-vl1l-FNvX-AJPS9V
    - LV Write Access read/write
    - LV Status available
    - # open 1
    - LV Size 94.00 GB
    - Current LE 24064
    - Segments 3
    - Allocation inherit
    - Read ahead sectors auto
    - - currently set to 256
    - Block device 253:12
- fdisk -l
  - find current partition info
    - Disk /dev/sda: 206 MB, 206831616 bytes
    - 12 heads, 32 sectors/track, 1052 cylinders
    - Units = cylinders of 384 * 512 = 196608 bytes
    - Device Boot Start End Blocks Id System
    - /dev/sda1 * 1 1047 200832 83 Linux
    - Disk /dev/sdb: 322.1 GB, 322122547200 bytes
    - 255 heads, 14 sectors/track, 176231 cylinders
    - Units = cylinders of 3570 * 512 = 1827840 bytes
    - Device Boot Start End Blocks Id System
    - /dev/sdb1 1 89789 160272384 8e Linux LVM
    - Disk /dev/sdc: 32.2 GB, 32212254720 bytes
    - 255 heads, 63 sectors/track, 3916 cylinders
    - Units = cylinders of 16065 * 512 = 8225280 bytes
    - Device Boot Start End Blocks Id System
    - /dev/sdc1 1 3916 31455206 83 Linux
- pvdisplay
  - Find current logical volume info
    - [user@host ~]$ sudo pvdisplay
    - —- Physical volume —-
    - PV Name /dev/sdb1
    - VG Name Volume00
    - PV Size **152.85 GB **/ not usable 4.00 MB
    - Allocatable yes (but full)
    - PE Size (KByte) 4096
    - Total PE 39128
    - Free PE 0
    - Allocated PE 39128
    - PV UUID lKinsV-v9jn-2waV-ErQa-CTCb-OdPh-PoY3zi
    - —- Physical volume —-
    - PV Name /dev/sdc1
    - VG Name Volume00
    - PV Size 30.00 GB / not usable 1.97 MB
    - Allocatable yes
    - PE Size (KByte) 4096
    - Total PE 7679
    - Free PE 242
    - Allocated PE 7437
    - PV UUID 7Hxg1t-954M-8Zvi-Hq2T-Y3qB-AQ7N-yBDZcr
- fdisk /dev/sdb
  - p (print partition table)
    - Disk /dev/sdb: 164.1 GB, 164120100864 bytes
    - 255 heads, 14 sectors/track, 89789 cylinders
    - Units = cylinders of 3570 * 512 = 1827840 bytes
    - Device Boot Start End Blocks Id System
    - /dev/sdb1 1 89789 160272384 8e Linux LVM
  - n (create new partition)
    - p (primary)
    - Partition number (1-4)
    - First cylinder (1+previous partition’d end cylinder)
    - Last cylinder (can specify size (+20G) or # of cylinders (+))
  - t (set partition type)
    - Select partition number
    - Hex code (8e for Linux LVM)
  - w (write)
- Reboot
- pvcreate /dev/sda3 (The partition # you just created)
- vgextend Volume00 /dev/sda3
- lvextend -L+2G /dev/Volume00/LogVol06
- resize2fs /dev/Volume00/LogVol06