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bug#64588: BUG: stat -f incorrectly reports a BTRFS device as a tmpfs


From: support
Subject: bug#64588: BUG: stat -f incorrectly reports a BTRFS device as a tmpfs
Date: Wed, 12 Jul 2023 23:46:38 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.13.0

coreutils version 9.1-1 on Debian testing, but also exists in previous versions.


Example:

stat -f  /dev/sdb
  File: "/dev/sdb"
    ID: eb91af7d7bda02dd Namelen: 255     Type: tmpfs
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 2012292    Free: 2012292    Available: 2012292
Inodes: Total: 2012292    Free: 2011839


stat -f  /dev/disk/by-uuid/6abaa68a-2670-4d8b-8d2a-fd7321df9242
  File: "/dev/disk/by-uuid/6abaa68a-2670-4d8b-8d2a-fd7321df9242"
    ID: eb91af7d7bda02dd Namelen: 255     Type: tmpfs
Block size: 4096       Fundamental block size: 4096
Blocks: Total: 2012292    Free: 2012292    Available: 2012292
Inodes: Total: 2012292    Free: 2011839


blkid /dev/sdb
/dev/sdb: UUID="6abaa68a-2670-4d8b-8d2a-fd7321df9242" UUID_SUB="d15f1846-8f18-4ba0-9e2a-a6aaa7bbf83b" BLOCK_SIZE="4096" TYPE="btrfs"


Not sure why the reported fstype is wrong but obviously it is a bug.


TIA






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