zfs-diff.8

ZFS-DIFF(8)

System Manager's Manual

ZFS-DIFF(8)

NAME

zfs-diff —

show difference between ZFS snapshots

SYNOPSIS

zfs

diff [

-FHth

] snapshot snapshot|filesystem

DESCRIPTION

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

-F

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

-H

Give more parsable tab-separated output, without header lines and without arrows.

-t

Display the path's inode change time as the first column of output.

-h

Do not \0ooo-escape non-ASCII paths.

EXAMPLES

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