mkfs/lts_5.15.conf

# V5 features that were the mkfs defaults when the upstream Linux 5.15 LTS
# kernel was released at the end of 2021.

[metadata]
nrext64=0
bigtime=1
crc=1
finobt=1
inobtcount=1
reflink=1
rmapbt=0

[inode]
sparse=1