[SOLVED] One of the logical volumes is not shown

Jason.nix · 04-09-2024, 08:15 AM

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.

rknichols · 04-09-2024, 08:23 AM

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

Jason.nix · 04-09-2024, 08:42 AM

Quote:

Originally Posted by rknichols

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

pan64 · 04-09-2024, 09:06 AM

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

Jason.nix · 04-09-2024, 10:18 AM

Quote:

Originally Posted by pan64

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.