仕事場のサーバーで、tune2fs -lを実行。Filesystem featuresにext_attr。Default mount optionsは (none)。

[root@AMULET2 USER02]# tune2fs -l /dev/sdb1
tune2fs 1.41.12 (17-May-2010)
Filesystem volume name: <none>
Last mounted on: /share
Filesystem UUID: 1d31c3cd-4d59-4272-91bd-5c93954ceca8
Filesystem magic number: 0xEF53
Filesystem revision #: 1 (dynamic)
Filesystem features: has_journal ext_attr resize_inode dir_index filetype needs_recovery extent flex_bg sparse_super large_file huge_file uninit_bg dir_nlink extra_isize
Filesystem flags: signed_directory_hash
Default mount options: (none)
Filesystem state: clean
Errors behavior: Continue
Filesystem OS type: Linux
Inode count: 244195328
Block count: 976754176
Reserved block count: 48837708
Free blocks: 578343554
Free inodes: 243519419
First block: 0
Block size: 4096
Fragment size: 4096
Reserved GDT blocks: 791
Blocks per group: 32768
Fragments per group: 32768
Inodes per group: 8192
Inode blocks per group: 512
RAID stride: 1
Flex block group size: 16
Filesystem created: Mon Mar 15 17:23:24 2021
Last mount time: Tue Aug 10 18:08:05 2021
Last write time: Tue Aug 10 18:08:05 2021
Mount count: 11
Maximum mount count: 26
Last checked: Mon Mar 15 17:23:24 2021
Check interval: 15552000 (6 months)
Next check after: Sat Sep 11 17:23:24 2021
Lifetime writes: 2935 GB
Reserved blocks uid: 0 (user root)
Reserved blocks gid: 0 (group root)
First inode: 11
Inode size: 256
Required extra isize: 28
Desired extra isize: 28
Journal inode: 8
First orphan inode: 151520218
Default directory hash: half_md4
Directory Hash Seed: 277adfcf-a0a8-4b8b-b6f8-b4d3eeb9c27b
Journal backup: inode blocks