As requested here are the outputs…
egrep ‘ext2|ext3|ext4|btrfs|xfs’:
[FONT=courier new]**linux-hc23:/var/lib/rpm #** mount | egrep 'ext2|ext3|ext4|btrfs|xfs'
/dev/sda2 on / type **btrfs** (rw,relatime,space_cache,subvolid=722,subvol=/@/.snapshots/360/snapshot)
/dev/sda2 on /.snapshots type **btrfs** (rw,relatime,space_cache,subvolid=258,subvol=/@/.snapshots)
/dev/sda2 on /boot/grub2/i386-pc type **btrfs** (rw,relatime,space_cache,subvolid=260,subvol=/@/boot/grub2/i386-pc)
/dev/sda2 on /var/lib/named type **btrfs** (rw,relatime,space_cache,subvolid=273,subvol=/@/var/lib/named)
/dev/sda2 on /var/lib/mysql type **btrfs** (rw,relatime,space_cache,subvolid=272,subvol=/@/var/lib/mysql)
/dev/sda2 on /var/lib/pgsql type **btrfs** (rw,relatime,space_cache,subvolid=274,subvol=/@/var/lib/pgsql)
/dev/sda2 on /var/lib/libvirt/images type **btrfs** (rw,relatime,space_cache,subvolid=268,subvol=/@/var/lib/libvirt/images)
/dev/sda2 on /var/lib/machines type **btrfs** (rw,relatime,space_cache,subvolid=269,subvol=/@/var/lib/machines)
/dev/sda2 on /usr/local type **btrfs** (rw,relatime,space_cache,subvolid=265,subvol=/@/usr/local)
/dev/sda2 on /var/lib/mailman type **btrfs** (rw,relatime,space_cache,subvolid=270,subvol=/@/var/lib/mailman)
/dev/sda2 on /var/lib/mariadb type **btrfs** (rw,relatime,space_cache,subvolid=271,subvol=/@/var/lib/mariadb)
/dev/sda2 on /srv type **btrfs** (rw,relatime,space_cache,subvolid=263,subvol=/@/srv)
/dev/sda2 on /opt type **btrfs** (rw,relatime,space_cache,subvolid=262,subvol=/@/opt)
/dev/sda2 on /tmp type **btrfs** (rw,relatime,space_cache,subvolid=264,subvol=/@/tmp)
/dev/sda2 on /var/tmp type **btrfs** (rw,relatime,space_cache,subvolid=278,subvol=/@/var/tmp)
/dev/sda2 on /var/crash type **btrfs** (rw,relatime,space_cache,subvolid=267,subvol=/@/var/crash)
/dev/sda2 on /var/spool type **btrfs** (rw,relatime,space_cache,subvolid=277,subvol=/@/var/spool)
/dev/sda2 on /var/log type **btrfs** (rw,relatime,space_cache,subvolid=275,subvol=/@/var/log)
/dev/sda2 on /var/opt type **btrfs** (rw,relatime,space_cache,subvolid=276,subvol=/@/var/opt)
/dev/sda2 on /var/cache type **btrfs** (rw,relatime,space_cache,subvolid=266,subvol=/@/var/cache)
/dev/sda2 on /boot/grub2/x86_64-efi type **btrfs** (rw,relatime,space_cache,subvolid=261,subvol=/@/boot/grub2/x86_64-efi)
/dev/sda3 on /home type **xfs** (rw,relatime,attr2,inode64,noquota)
[/FONT]
dmesg | grep ount:
**linux-hc23:/var/lib/rpm #** dmesg | grep ount
0.026386] M**ount**-cache hash table entries: 16384 (order: 5, 131072 bytes)
0.026396] M**ount**point-cache hash table entries: 16384 (order: 5, 131072 bytes)
0.110022] Performance Events: PEBS fmt1+, 16-deep LBR, perf_event_intel: SandyBridge events, perf_event_intel: full
-width c**ount**ers, Intel PMU driver.
0.129710] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU c**ount**er.
1.208212] hpet0: 8 comparators, 64-bit 14.318180 MHz c**ount**er
2.617764] RAPL PMU detected, API unit is 2^-32 Joules, 3 fixed c**ount**ers 163840 ms ovfl timer
18.252370] XFS (sda3): M**ount**ing V5 Filesystem
19.229771] XFS (sda3): Ending clean m**ount**
354.795675] cfg80211: Regulatory domain changed to c**ount**ry: US
[30095.880445] cfg80211: Regulatory domain changed to c**ount**ry: US
[34803.694635] cfg80211: Regulatory domain changed to c**ount**ry: US