LinuxQuestions.org - [SOLVED] One of the logical volumes is not shown

- Linux - Newbie (https://www.linuxquestions.org/questions/linux-newbie-8/)

- - One of the logical volumes is not shown (https://www.linuxquestions.org/questions/linux-newbie-8/one-of-the-logical-volumes-is-not-shown-4175735832/)

One of the logical volumes is not shown

Hello,
The system has the following logical volumes:

Code:

# /sbin/lvdisplay 

  --- Logical volume ---

  LV Path                /dev/LB/Root

  LV Name                Root

  VG Name                LB

  LV UUID                1b37gu-87k3-hoOG-xPzo-D166-TH0C-AnuyCd

  LV Write Access        read/write

  LV Creation host, time L-B, 2024-04-09 15:35:43 +0330

  LV Status              available

  # open                1

  LV Size                74.50 GiB

  Current LE            19073

  Segments              1

  Allocation            inherit

  Read ahead sectors    auto

  - currently set to    256

  Block device          254:0

  

  --- Logical volume ---

  LV Path                /dev/LB/Home

  LV Name                Home

  VG Name                LB

  LV UUID                0LuQxk-f8Ux-Iyo4-3R51-p8nY-xOZs-JcbBn8

  LV Write Access        read/write

  LV Creation host, time L-B, 2024-04-09 15:35:57 +0330

  LV Status              available

  # open                1

  LV Size                18.62 GiB

  Current LE            4768

  Segments              1

  Allocation            inherit

  Read ahead sectors    auto

  - currently set to    256

  Block device          254:1

  

  --- Logical volume ---

  LV Path                /dev/LB/Data

  LV Name                Data

  VG Name                LB

  LV UUID                lIvuOr-8drz-88W1-uVJU-IWiT-Mpm9-19d5YV

  LV Write Access        read/write

  LV Creation host, time L-B, 2024-04-09 15:37:33 +0330

  LV Status              available

  # open                0

  LV Size                <418.87 GiB

  Current LE            107230

  Segments              1

  Allocation            inherit

  Read ahead sectors    auto

  - currently set to    256

  Block device          254:2

But there is no Data in the following output:

Code:

# df

Filesystem          1K-blocks    Used Available Use% Mounted on

udev                32947820      0  32947820  0% /dev

tmpfs                6594356    692  6593664  1% /run

/dev/mapper/LB-Root  76317468 1722272  70672664  3% /

tmpfs                32971772      0  32971772  0% /dev/shm

tmpfs                    5120      0      5120  0% /run/lock

/dev/mapper/LB-Home  19047080      44  18054168  1% /home

tmpfs                6594352      0  6594352  0% /run/user/0

tmpfs                6594352      0  6594352  0% /run/user/1000

How do I add it?

Thank you.

The df command shows space on mounted filesystems. Where is /dev/LB/Data mounted? Show the output from "lsblk -f".

Quote:

Originally Posted by rknichols (Post 6494980)

The df command shows space on mounted filesystems. Where is /dev/LB/Data mounted? Show the output from "lsblk -f".

Hi,
Thank you so much for your reply.
The output is:

Code:

# lsblk -f

NAME        FSTYPE      FSVER    LABEL UUID                                  FSAVAIL FSUSE% MOUNTPOINTS

sda                                                                                          

└─sda1      LVM2_member LVM2 001      Dx71DT-ea3d-D2fp-lEmC-zxfr-YYqp-aC0ehP                

  ├─LB-Root ext4        1.0            f683d121-8d8d-4060-bc56-b7f21b72df24    67.3G    2% /

  ├─LB-Home ext4        1.0            367133d1-b785-42d1-bf5c-4628e4e188c0    17.2G    0% /home

  └─LB-Data ext4        1.0            201e5cc4-f05e-439e-b09f-6550aaf94c85                  

sr0

so it is not mounted. You need to mount it (check how /home is mounted, you need to do the same way)

Quote:

Originally Posted by pan64 (Post 6494987)

so it is not mounted. You need to mount it (check how /home is mounted, you need to do the same way)

Hi,
Thank you so much.
I created a directory called data under the /mnt/ directory and edited the /etc/fstab file as follows:

Code:

/dev/mapper/LB-Root /              ext4    errors=remount-ro 0      1

/dev/mapper/LB-Home /home          ext4    defaults        0      2

/dev/mapper/LB-Data /mnt/data      ext4    defaults        0      2

/dev/sr0        /media/cdrom0  udf,iso9660 user,noauto    0      0

Then:

Code:

# mount -a

# systemctl daemon-reload

Problem solved.