zfs-diff.8

ZFS-DIFF(8) System Manager's Manual ZFS-DIFF(8)

zfs-diff
show difference between ZFS snapshots

zfs diff [
-FHth
] snapshot snapshot|filesystem

Display the difference between a snapshot of a given filesystem and another snapshot of that filesystem from a later time or the current contents of the filesystem. The first column is a character indicating the type of change, the other columns indicate pathname, new pathname (in case of rename), change in link count, and optionally file type and/or change time. The types of change are:
-
The path has been removed
+
The path has been created
M
The path has been modified
R
The path has been renamed
Display an indication of the type of file, in a manner similar to the -F option of ls(1).
B
Block device
C
Character device
/
Directory
>
Door
|
Named pipe
@
Symbolic link
P
Event port
=
Socket
F
Regular file
Give more parsable tab-separated output, without header lines and without arrows.
Display the path's inode change time as the first column of output.
Do not \0ooo-escape non-ASCII paths.

Example 1: Showing the differences between a snapshot and a ZFS Dataset

The following example shows how to see what has changed between a prior snapshot of a ZFS dataset and its current state. The -F option is used to indicate type information for the files affected.
# zfs diff -F tank/test@before tank/test 
M       /       /tank/test/ 
M       F       /tank/test/linked      (+1) 
R       F       /tank/test/oldname -> /tank/test/newname 
-       F       /tank/test/deleted 
+       F       /tank/test/created 
M       F       /tank/test/modified

zfs-snapshot(8)
March 16, 2022 Debian