There's the traditional manual page for mtmfs, and there's mention of local Time Machine snapshots in the manual page for tmutil, but here – running release candidate build 16A319 of Mac OS X 10.12 (macOS Sierra) with a MacBookPro11,2 notebook:
- no local snapshots
- unless I'm missing something, nothing relevant in the Time Machine pane of System Preferences.
Code:
sh-3.2$ date ; sw_vers ; uname -a
Sun 18 Sep 2016 15:03:19 BST
ProductName: Mac OS X
ProductVersion: 10.12
BuildVersion: 16A319
Darwin momh167-gjp4-macbookpro112-sierra.local 16.0.0 Darwin Kernel Version 16.0.0: Mon Aug 29 17:56:20 PDT 2016; root:xnu-3789.1.32~3/RELEASE_X86_64 x86_64
sh-3.2$ apropos mtmfs
mtmfs(8) - Mobile Time Machine file system daemon
sh-3.2$ which mtmfs
sh-3.2$ man mtmfs
sh-3.2$ man tmutil
sh-3.2$ ls -ahl /
total 189
drwxr-xr-x 35 root wheel 1.2K 18 Sep 10:49 .
drwxr-xr-x 35 root wheel 1.2K 18 Sep 10:49 ..
-rw-rw-r-- 1 root admin 6.0K 16 Sep 01:21 .DS_Store
d--x--x--x 9 root wheel 306B 17 Sep 17:22 .DocumentRevisions-V100
drwxr-xr-x@ 3 root wheel 102B 17 Sep 01:27 .PKInstallSandboxManager-SystemSoftware
drwx------ 5 grahamperrin staff 170B 8 Sep 16:39 .Spotlight-V100
drwxrwxrwt@ 3 grahamperrin staff 102B 9 Sep 00:36 .TemporaryItems
d-wx-wx-wt 2 grahamperrin staff 68B 9 Sep 00:39 .Trashes
-rw-r--r--@ 1 grahamperrin staff 0B 8 Sep 16:39 .com.apple.timemachine.donotpresent
---------- 1 root admin 0B 30 Jul 20:32 .file
drwx------ 169 grahamperrin staff 5.6K 18 Sep 13:55 .fseventsd
-rw------- 1 root wheel 64K 8 Sep 16:58 .hotfiles.btree
drwxr-xr-x@ 2 root wheel 68B 14 Sep 22:03 .vol
drwxrwxr-x+ 40 root admin 1.3K 18 Sep 12:07 Applications
drwxrwxr-x 11 root admin 374B 16 Sep 01:20 Incompatible Software
drwxr-xr-x+ 59 root wheel 2.0K 18 Sep 10:49 Library
drwxr-xr-x@ 2 root wheel 68B 14 Sep 22:03 Network
drwxr-xr-x@ 4 root wheel 136B 14 Sep 21:54 System
drwxr-xr-x 6 root admin 204B 14 Sep 22:03 Users
drwxr-xr-x@ 7 root wheel 238B 18 Sep 13:07 Volumes
drwxr-xr-x@ 38 root wheel 1.3K 2 Sep 05:30 bin
drwxrwxr-t@ 2 root admin 68B 14 Sep 22:03 cores
dr-xr-xr-x 3 root wheel 4.4K 17 Sep 17:21 dev
lrwxr-xr-x@ 1 root wheel 11B 14 Sep 22:00 etc -> private/etc
dr-xr-xr-x 2 root wheel 1B 18 Sep 10:55 home
-rw-r--r--@ 1 root wheel 313B 31 Jul 03:00 installer.failurerequests
dr-xr-xr-x 2 root wheel 1B 18 Sep 10:55 net
drwxr-xr-x 4 root wheel 136B 18 Sep 10:55 opt
drwxr-xr-x@ 6 root wheel 204B 14 Sep 22:03 private
drwxr-xr-x@ 63 root wheel 2.1K 14 Sep 22:01 sbin
lrwxr-xr-x@ 1 root wheel 11B 14 Sep 22:00 tmp -> private/tmp
drwxr-xr-x@ 11 root wheel 374B 16 Sep 01:38 usr
lrwxr-xr-x@ 1 root wheel 11B 14 Sep 22:01 var -> private/var
sh-3.2$