Montarea volumelor logice in Linux (LVM)

Configurare noua (How To)

Situatie

Uneori aveti nevoie sa faceti mount la volume facute cu LVM si nu puteti utiliza clasicul mount direct pe device. (sdXX)

Cam asa arata partitia lvm vazuta la fdisk:

root@debian:~# fdisk -l /dev/sda

Disk /dev/sda: 240.1 GB, 240057409536 bytes
255 heads, 63 sectors/track, 29185 cylinders, total 468862128 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0001f2d1

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      514047      256000   83  Linux
/dev/sda2          514048   468860927   234173440   8e  [B]Linux LVM[/B]

Solutie

Contrar asteptarilor, se face extrem de simplu utilizand utilitarul lvdisplay pentru a afisa volumele:

root@debian:~# lvdisplay 
  --- Logical volume ---
  LV Path                /dev/vg/root
  LV Name                root
  VG Name                vg
  LV UUID                QzUpJS-161D-2cwR-n0fs-jPRw-wkaS-cZ6SrR
  LV Write Access        read/write
  LV Creation host, time devel02.vm, 2014-11-25 14:40:45 +0000
  LV Status              available
  # open                 0
  LV Size                214.62 GiB
  Current LE             6868
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:0

  --- Logical volume ---
  LV Path                /dev/vg/tmp
  LV Name                tmp
  VG Name                vg
  LV UUID                7QpmhZ-8Fi1-ajzg-8803-2Bl1-qdee-KgyszE
  LV Write Access        read/write
  LV Creation host, time devel02.vm, 2014-11-25 14:41:06 +0000
  LV Status              available
  # open                 0
  LV Size                1.00 GiB
  Current LE             32
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:1

  --- Logical volume ---
  LV Path                /dev/vg/swap
  LV Name                swap
  VG Name                vg
  LV UUID                IXmZCW-rC3A-v8da-aLnQ-4jqA-amhq-TqRfhQ
  LV Write Access        read/write
  LV Creation host, time devel02.vm, 2014-11-25 14:41:06 +0000
  LV Status              available
  # open                 0
  LV Size                7.69 GiB
  Current LE             246
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           252:2


Volumul care ne intereseaza este 'root' (lv name). Acum putem face mount 
folosind LV Path de la root + un director temporar

root@debian:~# mkdir x
root@debian:~# mount /dev/vg/root x/

Tip solutie

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