GEOM_LABEL[2]: Tasting md0.
GEOM_LABEL[1]: MSDOSFS: md0: no FAT volume detected.
msdosfs_mount(): ENTER
mountexfat: Filesystem has exFAT revision: 1.0
mountmsdosfs() before fillinusemap
deget(pmp 0xfffff80003c4ea80, dirclust 0, diroffset 1fffffff, depp 0xfffffe001bb5d5a0)
exfat_fillusemap(): cn 0 bm_cn 2 bm_len 4090
exfat_fillusemap(): scanned 0 clusters (maxcluster: 32722)
msdosfs_inactive(): dep 0xfffff80016014e00, de_Name[0] 0
msdosfs_inactive(): v_usecount 0, de_Name[0] 0
msdosfs_reclaim(): dep 0xfffff80016014e00, file , refcnt 1
deget(pmp 0xfffff80003c4ea80, dirclust 5, diroffset 20, depp 0xfffffe001bb5d590)
DE_INTERNALIZE(): startcluster 2, filesize: 4090
exfat_fillusemap(): alloc bitmap pcbmap: ok
exfat_fillusemap(): alloc bitmap bread: ok
msdosfs_inactive(): dep 0xfffff80016014e00, de_Name[0] 0
msdosfs_inactive(): v_usecount 0, de_Name[0] 0
msdosfs_reclaim(): dep 0xfffff80016014e00, file , refcnt 1
mountmsdosfs() after fillinusemap: error=0
msdosfs_mount(): mp 0xfffffe001a3c85c0, pmp 0xfffff80003c4ea80, inusemap 0xfffff80016013000
msdosfs_root(); mp 0xfffffe001a3c85c0, pmp 0xfffff80003c4ea80
deget(pmp 0xfffff80003c4ea80, dirclust 0, diroffset 1fffffff, depp 0xfffffe001bb5d758)
msdosfs_inactive(): dep 0xfffff80016014e00, de_Name[0] 0
msdosfs_inactive(): v_usecount 0, de_Name[0] 0
msdosfs_reclaim(): dep 0xfffff80016014e00, file , refcnt 1
0

/dev/md0 on /root/exfat/mount_native (msdosfs, local, read-only)