論理ボリュームの拡張

現在の容量を確認する。

$ df -h
Filesystem             Size  Used Avail Use% Mounted on
tmpfs                  6.3G  2.1M  6.3G   1% /run
/dev/nvme0n1p2         937G   22G  868G   3% /
tmpfs                   32G  124K   32G   1% /dev/shm
tmpfs                  5.0M     0  5.0M   0% /run/lock
/dev/nvme0n1p1         1.1G  6.1M  1.1G   1% /boot/efi
/dev/mapper/vg00-work  4.0T  3.2T  615G  85% /work
/dev/mapper/vg00-home  4.0T  155G  3.7T   5% /home
tmpfs                  6.3G  4.0K  6.3G   1% /run/user/1000
tmpfs                  6.3G  4.0K  6.3G   1% /run/user/1001

work には、仮想的に4.0TBのみ与えている。現在、85%の使用率で残り615GBある。

次に大きなデータを入れると入らなくなる可能性があるので、1TBを追加しようと思う。

まず論理ボリュームを確認。

$ sudo lvdisplay
  --- Logical volume ---
  LV Path                /dev/vg00/home
  LV Name                home
  VG Name                vg00
  LV UUID                0Bnq0L-mE5X-7PEE-npib-Q8BM-AktA-J0gD5e
  LV Write Access        read/write
  LV Creation host, time wasat, 2024-10-07 07:58:29 +0000
  LV Status              available
  # open                 1
  LV Size                4.00 TiB
  Current LE             1048576
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Path                /dev/vg00/work
  LV Name                work
  VG Name                vg00
  LV UUID                Q8kVeF-F49J-d7b3-Iuau-EG29-FRrS-8s6fLy
  LV Write Access        read/write
  LV Creation host, time wasat, 2024-10-07 07:58:44 +0000
  LV Status              available
  # open                 1
  LV Size                4.00 TiB
  Current LE             1048576
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

次のコマンドで拡張を実行する。

$ sudo lvextend -L+1TB /dev/vg00/work
  Size of logical volume vg00/work changed from 4.00 TiB (1048576 extents) to 5.00 TiB (1310720 extents).
  Logical volume vg00/work successfully resized.

成功した。再度、論理ボリュームを確認する。

$ sudo lvdisplay                     
  --- Logical volume ---
  LV Path                /dev/vg00/home
  LV Name                home
  VG Name                vg00
  LV UUID                0Bnq0L-mE5X-7PEE-npib-Q8BM-AktA-J0gD5e
  LV Write Access        read/write
  LV Creation host, time wasat, 2024-10-07 07:58:29 +0000
  LV Status              available
  # open                 1
  LV Size                4.00 TiB
  Current LE             1048576
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:0

  --- Logical volume ---
  LV Path                /dev/vg00/work
  LV Name                work
  VG Name                vg00
  LV UUID                Q8kVeF-F49J-d7b3-Iuau-EG29-FRrS-8s6fLy
  LV Write Access        read/write
  LV Creation host, time wasat, 2024-10-07 07:58:44 +0000
  LV Status              available
  # open                 1
  LV Size                5.00 TiB
  Current LE             1310720
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:1

無事、変更されてる。

LVの拡張に合わせてパーティションを拡張すれば、完了である。

$ sudo resize2fs /dev/mapper/vg00-work
resize2fs 1.46.5 (30-Dec-2021)
Filesystem at /dev/mapper/vg00-work is mounted on /; on-line resizing required
old_desc_blocks = 13, new_desc_blocks = 117
The filesystem on /dev/mapper/vg00-work is now 243666944 (4k) blocks long.