LVM

手順 [#kb409ec3]

 # pvcreate /dev/sdc1
  Physical volume "/dev/sdc1" successfully created
 # pvscan
  PV /dev/sda3   VG vg01            lvm2 [929.70 GiB / 861.70 GiB free]
  PV /dev/sdc1                      lvm2 [930.38 GiB]
  Total: 2 [1.82 TiB] / in use: 1 [929.70 GiB] / in no VG: 1 [930.38 GiB]
 # pvdisplay /dev/sda3
  --- Physical volume ---
  PV Name               /dev/sda3
  VG Name               vg01
  PV Size               929.71 GiB / not usable 2.00 MiB
  Allocatable           yes
  PE Size               4.00 MiB
  Total PE              238004
  Free PE               220596
  Allocated PE          17408
  PV UUID               iQZB88-jNmJ-SEv9-AX31-BPeo-bOLc-0a4dtc
 # vgs
  VG   #PV #LV #SN Attr   VSize   VFree
  vg01   1   6   0 wz--n- 929.70g 861.70g
 # vgcreate vg02 /dev/sdc1
  Volume group "vg02" successfully created
 # vgscan
  Reading all physical volumes.  This may take a while...
  Found volume group "vg02" using metadata type lvm2
  Found volume group "vg01" using metadata type lvm2
 # vgdisplay vg02
  --- Volume group ---
  VG Name               vg02
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               930.38 GiB
  PE Size               4.00 MiB
  Total PE              238178
  Alloc PE / Size       0 / 0
  Free  PE / Size       238178 / 930.38 GiB
  VG UUID               bPOh2m-xCAs-Tbx1-w1j6-oq22-C9TI-3Xb5Iy
 
 # lvcreate -L 200G -n lv_share01 vg02
  Logical volume "lv_share01" created
 # lvs
  lv_share01 vg02 -wi-a----- 200.00g
 # mkfs.xfs -f /dev/vg02/lv_share01
 meta-data=/dev/vg02/lv_share01   isize=256    agcount=16, agsize=3276800 blks
         =                       sectsz=4096  attr=2, projid32bit=0
 data     =                       bsize=4096   blocks=52428800, imaxpct=25
         =                       sunit=0      swidth=0 blks
 naming   =version 2              bsize=4096   ascii-ci=0
 log      =internal log           bsize=4096   blocks=25600, version=2
          =                       sectsz=4096  sunit=1 blks, lazy-count=1
 realtime =none                   extsz=4096   blocks=0, rtextents=0
 # mkdir /mnt/share01
 # mount /dev/vg02/lv_share01 /mnt/share01/
 # df -Th
 /dev/mapper/vg02-lv_share01
                     xfs    200G   33M  200G   1% /mnt/share01
 # cp -p /etc/fstab /etc/fstab.`date +%Y%m%d`
 # vi /etc/fstab
 /dev/mapper/vg02-lv_share01 /mnt/share01         xfs    defaults        1 2
 # umount /mnt/share01
 # mount /mnt/share01/
 /dev/mapper/vg02-lv_share01
                     xfs    200G   33M  200G   1% /mnt/share01