compare / restore files from zfs snapshots
Next features of zfs-snap-diff: feature poll. Please comment / vote
With zfs-snap-diff you can explore file differences and restore changes from older file versions in different zfs snapshots.
You can restore the whole file from a older version, or select single changes to revert in the 'Diff' view.
zfs-snap-diff has a web frontend, so it can run on your local work machine or on your remote file / backup server (no Xserver necesarry).
To keep it protable and independent, it's made as a single executable with all html / js stuff included. The backend is implemented in golang, the frontend with angularjs, bootstrap and highlight.js.
##Usage under linux, you need the '-use-sudo' flag if you don't run it as root - see the options below
./zfs-snap-diff [OPT_ARGS] <ZFS_NAME>
- starts a web server on port http://127.0.0.1:12345
- optional arguments:
- -a: listen on all interfaces (default: listen only on localhost)
- -p: web server port (default: 12345)
- -default-file-action: file action when a file is selected (default: view):
- off: no action
- view: view the file from the given snapshot
- diff: diff the file from the given snapshot with the actual version
- download: download the file from the given snapshot
- restore: restore the file from the given snapshot
- -diff-context-size: context size in diff (default: 5)
- -scan-snap-limit: limit how many snapshots are scan to search older file version (default: scan all)
- negative limit: scan all snapshots
- recommended if you have many snapshots
- -compare-file-method: compare method when searching in snapshots for other file versions (default: auto)
- supported methods:
- auto: compares text files per md5, others by size+modTime
- size+modTime: compares per size and modification time (very cheap)
- size: compares per size (very cheap)
- md5: compares per md5 (VERY EXPENSIVE! combine it with '-scan-snap-limit' and use it only for text files!)
- supported methods:
- -use-sudo: use sudo when executing os commands
- necessary under linux when running as non root
- adjust sudo rules (see doc/etc/sudoers.d/zfs-snap-diff)
http://localhost:12345
Select a dataset which you would explore. If you start zfs-snap-diff on a dataset with no childrens, the current dataset are selected.
Search a file to compare in the file browser.
When a file is selected, zsd-snap-diff search all snapshots where the selected file was modified (it compares text files per md5, others per size+modTime).
When you select a snapshot, you can view, diff, download or restore the file from the selected snapshot.
View the file content from an older file version.
Explore file differences and pick single changes to revert.
intext diff:
side by side diff:
Search a snapshot in the snapshot browser. All snapshots from the selected dataset are displayed in this view.
When a snapshot is selected, the file-browser shows the content from this snapshot.
From here you can easy view / restore a deleted file.
Get a package for your platform from: https://github.com/j-keck/zfs-snap-diff/releases/latest
ping me if your platform is missing
-
clone the repository
git clone github.com/j-keck/zfs-snap-diff -
change into the project directory
cd zfs-snap-diff -
build
./build.pl build -
run it
./zfs-snap-diff <ZFS_NAME>
##Notes
-
if you download a file from a snapshot, the generated file name has the snapshot name included:
<ORG_FILE_NAME>-<SNAPSHOT_NAME>.<FILE_SUFFIX> -
if you restore / patch a file, the orginal file will be saved under:
<ORG_FILE_PATH>/.zsd/<ORG_FLILE_NAME>_<TIMESTAMP> -
for snapshot differences (Browse snapshot diff), you need to set the diff permission:
zfs allow -u <USER_NAME> diff <ZFS_NAME>
-
if you change something under 'webapp/'
-
start
zfs-snap-diffper./build.pl webdev <ZFS_NAME>to serve the static content from thewebappfolder -
re-generate bindata.go and recompile
zfs-snap-diff- ./build.pl build
-
###0.0.X###
0.0.9:
- show file size and modify timestamp in the file-browser
- list directories at first in the file-browser
- sortable columns in the file-browser
- only regular files / directories are clickable
all commits from 0.0.8...0.0.9
0.0.8:
- dataset selectable in 'browse-actual' view
- add size informations to dataset (to match 'zfs list' output)
- small fixes
- code cleanup
all commits from 0.0.7...0.0.8
0.0.7:
- support sub zfs filesystems (datasets)
- optional use sudo when execute zfs commands
- necessary under linux when running as non root
- needs sudo rules (see doc/etc/sudoers.d/zfs-snap-diff)
- start
zfs-snap-diffwith '-use-sudo'
- new view for server messages
all commits from 0.0.6...0.0.7
0.0.6:
- check if file in snapshot has changed filetype depend:
- text files: md5
- others: size+modTime
- diffs created in the backend (per go-diff)
- different presentation: intext / side by side
- possibility to revert single changes
all commits from 0.0.5...0.0.6
0.0.5:
- file compare method configurable: size+modTime (default) or md5
- optional limit how many snapshots are scan to search older file version
- autohide notifications in frontend
- show message if no snapshots found
all commits from 0.0.4...0.0.5
0.0.4:
- view, diff, download or restore file from a snapshot
- view file with syntax highlight
- browse old snapshot versions
- easy switch "versions" per 'Older' / 'Newer' buttons
- cleanup frontend
- refactor backend
0.0.3:
- show server errors on frontend
- show waiting spinner when loading
0.0.2 :
- partial frontend configuration from server
- fix firefox ui
0.0.1:
- prototype