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My lsblk is not showing gpt partition label for one disk partition, which was freshly formatted with

mkfs.ext4 -v -L MyLabel mydev

  • somehow the partition was not labeled properly afterwards. I didn't notice it until my mount-by-label operation failed.
  • I tried to reset the partition label with e2label, mount-by-label worked after that, but lsblk is still not showing the gpt partition label.
  • showing gpt partition label with blkid works.

So how can I have lsblk showing gpt partition label properly?

# As root,
# Here is the partition with working label
% blkid -s LABEL -o value /dev/sda9
os2

% lsblk -o NAME,LABEL /dev/sda9
NAME LABEL
sda9 os2

# Here is the partition without working label

% blkid -s LABEL -o value /dev/sda9
os2

% lsblk -o NAME,LABEL /dev/sda8
NAME LABEL
sda8 

$ apt-cache policy util-linux
util-linux:
  Installed: 2.36.1-8+deb11u1
  Candidate: 2.36.1-8+deb11u1
  Version table:
 *** 2.36.1-8+deb11u1 500
        500 http://deb.debian.org/debian bullseye/main amd64 Packages
        500 http://security.debian.org/debian-security bullseye-security/main amd64 Packages
        100 /var/lib/dpkg/status
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  • 2
    e2label sets the filesystem label, which isn't the same as the gpt partition label Commented Jul 7, 2023 at 5:25
  • 2
    also, after changing the filesystem label, it doesn't necessarily appear in lsblk output. You could reboot, or just run fdisk/gdisk on the device and write (without making any changes of course) - oh and if you do want the gpt partition label, use gdisk c option - and include PARTLABEL for the lsblk -o option Commented Jul 7, 2023 at 5:51
  • 1
    Yes, problem gone after reboot, which what I'll be doing next time, rather than trying to fix it before rebooting. thx! Commented Jul 7, 2023 at 17:42
  • 1
    Thanks so much for the hint about using PARTLABEL instead of LABEL @JaromandaX ! Commented Aug 21, 2023 at 16:06

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