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On one of our systems, Additional SSD device mounted is showing size of 5.8 TB, but same partition showing size of only 59 GB using df command-

[opc@kms10]$ df -Th /data1
Filesystem        Type      Size  Used Avail Use% Mounted on
/dev/mapper/edata devtmpfs   59G  9.2G   50G  16% /data1


[opc@kms10]$ lsblk
NAME    MAJ:MIN RM  SIZE RO TYPE  MOUNTPOINT
sda       8:0    0 46.6G  0 disk  
├─sda2    8:2    0    8G  0 part  [SWAP]
├─sda3    8:3    0 38.4G  0 part  /
└─sda1    8:1    0  200M  0 part  /boot/efi
nvme0n1 259:0    0  5.8T  0 disk  
└─edata 252:0    0  5.8T  0 crypt /data1
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    Something feels wrong here. The common use-case for devtmpfs is serving as an in-memory file-system for holding the kernel's file representations of the system's hardware devices. How did you manage to put that file-system on a disk? – Hermann May 31 at 10:55

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