Why does df report 3G used on empty LV mount (XFS)?

Rocky Linux General
1

Hi-

Rocky 9.2 (DVD install w/gnome) with XFS, LVM and mutiple LVs. LV “rl-animwork” is mounted to /animwork. The target mount dir shows empty, both with “rl-animwork” mounted and without it mounted:

ls -alh /animwork
total 4.0K
drwxr-xr-x. 2 root root 6 Nov 14 19:39 .
dr-xr-xr-x. 25 root root 4.0K Nov 8 18:21 …

du -hcs /animwork
0 /animwork
0 total

but when “rl-animwork” is mounted on /animwork, df reports 2.8GiB used:
/dev/mapper/rl-animwork xfs 390G 2.8G 388G 1% /animwork

How is this possible? lsof reporting no big deleted files.
Other infos:

/etc/fstab:
/dev/mapper/rl-root / xfs defaults 0 0
/dev/mapper/rl-animwork /animwork xfs defaults 0 0
UUID=16d9afb6-8bd4-408e-b4a9-5e332f185576 /boot xfs defaults 0 0
/dev/mapper/rl-home /home xfs defaults 0 0
/dev/mapper/rl-swap none swap defaults 0 0

lvdisplay outoput for the lv:/
— Logical volume —
LV Path /dev/rl/animwork
LV Name animwork
VG Name rl
LV UUID QwG5Gj-jbhh-5UlF-4XDO-ges1-DHm4-mFDns8
LV Write Access read/write
LV Creation host, time localhost.localdomain, 2023-10-19 12:50:01 -0700
LV Status available
open 1
LV Size 390.08 GiB
Current LE 99861
Segments 1
Allocation inherit
Read ahead sectors auto
currently set to 8192
Block device 253:3

Any ideas? Thank you.

2

XFS, like any filesystem, does reserve space for its metadata.
What does xfs_info /animwork show?

3

xfs_info /animwork
meta-data=/dev/mapper/rl-animwork isize=512 agcount=4, agsize=25564416 blks
= sectsz=4096 attr=2, projid32bit=1
= crc=1 finobt=1, sparse=1, rmapbt=0
= reflink=1 bigtime=1 inobtcount=1
data = bsize=4096 blocks=102257664, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0, ftype=1
log =internal log bsize=4096 blocks=49930, version=2
= sectsz=4096 sunit=1 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0

I am not seeing it. Please advise.

4

storage - Newly created XFS filesystem shows 78 GB used - Server Fault ?

5

RE: “…depending on which metadata features you enable at mkfs time.” (from the link supplied by quartsize):
The lv was created via Rocky 9.2 install DVD image- any mkfs defaults were not altered by me nor do I recall any ability to do so. Does anyone know how to alter this at the installer DVD? Is it possible for me to remove the metadata features now- after “mkfs time”? Thank you.