Unclear which XFS version is presented

Issue

• Our Backup solution vendor - Avamar - states: Beware XFSv5 is first supported from 7.5.1 and not yet in 7.5.0.
• xfs_info states VERSION=2
• However dmesg states mounted as V5

# rpm -qa | grep -i xfs
xfsprogs-4.5.0-12.el7.x86_64
# xfs_info /usr
meta-data=/dev/mapper/vg00-lv_usr isize=512    agcount=4, agsize=262144 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=0 spinodes=0
data     =                       bsize=4096   blocks=1048576, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0 ftype=1
log      =internal               bsize=4096   blocks=2560, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0


# dmesg | grep -i XFS
[    1.544182] SGI XFS with ACLs, security attributes, no debug enabled
[    1.545990] XFS (dm-0): Mounting V5 Filesystem
[    2.070654] XFS (dm-0): Ending clean mount
[    2.106368] XFS (dm-2): Mounting V5 Filesystem
[    2.144956] XFS (dm-2): Ending clean mount
[    4.448675] XFS (dm-4): Mounting V5 Filesystem
[    4.448846] XFS (dm-3): Mounting V5 Filesystem
[    4.466268] XFS (dm-5): Mounting V5 Filesystem
[    4.477847] XFS (dm-6): Mounting V5 Filesystem
[    4.514435] XFS (dm-5): Ending clean mount
[    5.124175] XFS (dm-6): Ending clean mount
[    5.365848] XFS (dm-11): Mounting V5 Filesystem
[    5.366623] XFS (dm-12): Mounting V5 Filesystem
[    5.369882] XFS (dm-10): Mounting V5 Filesystem
[    5.408836] XFS (dm-11): Ending clean mount
[    5.496700] XFS (dm-10): Ending clean mount
[    5.752641] XFS (dm-12): Ending clean mount
[    8.737483] XFS (dm-3): Ending clean mount
[    8.796801] XFS (dm-4): Ending clean mount