Automatic snapshot

[kucksdorfs]

Streamline the snapshot creation process and work with scheduler to make snapshots from every X minutes up to X hours.

If nothing else, provide details on how to use scheduler to take snapshots.

[luxflow]

I'm planning to support this feature before that try using zfsnap
https://github.com/zfsnap/zfsnap

[brunopereira81]

There is also something in place from the folks from ZFS on Linux: https://github.com/zfsonlinux/zfs-auto-snapshot

I have been using this in production servers where ZFS is used to keep snapshot creating and rotation in place.

[luxflow]

I'm using currently zfs-auto-snapshot but the problem is that it doesn't use local time, so hard to know when snapshot is created

[kucksdorfs]

This is above the requirements above, but is thee any way to compare snapshots? So if nothing has changed between snapshots delete the older snapshot?

[luxflow]

zfs diff for snapshot comparing , but I didn't heard of automatically deleting not changed older snapshot, and don't think it should be

[brunopereira81]

@luxflow #22 (comment)

[root@vm000585 ~]$ zfs list -t snapshot | tail -n 5
database/postgres@zfs-auto-snap_frequent-2017-02-19-1330  67.5K      -  7.21G  -
database/postgres@zfs-auto-snap_frequent-2017-02-19-1345  66.5K      -  7.21G  -
database/postgres@zfs-auto-snap_frequent-2017-02-19-1400  65.5K      -  7.21G  -
database/postgres@zfs-auto-snap_hourly-2017-02-19-1401    66.5K      -  7.21G  -
database/postgres@zfs-auto-snap_frequent-2017-02-19-1415  67.5K      -  7.21G  -
[ANSIBLE MANAGED]
[root@vm000585 ~]$ date
Sun Feb 19 15:19:26 CET 2017
[ANSIBLE MANAGED]
[root@vm000585 ~]$ ll /etc/localtime
lrwxrwxrwx. 1 root root 38 May  6  2016 /etc/localtime -> ../usr/share/zoneinfo/Europe/Amsterdam

Weird, seems to be OK for me, what's your system setup? I might try to reproduce it and fix if needed in the auto-snapshot repository.

[luxflow]

@brunopereira81
it used localtime, but on some timezone, due to daylight saving problem,
In upstream version uses --utc option no way to fiddle this behavior except modify source

[Skaronator]

Found some more tools if somebody want to implement them:

• easy: https://github.com/zfsonlinux/zfs-auto-snapshot
• more features: https://github.com/jimsalterjrs/sanoid
• http://www.zfsnap.org/

[Skaronator]

In case anyone implement this to the plugin please take a look at this page https://github.com/zfsonlinux/zfs-auto-snapshot/wiki/Samba

The Snapshot versions of the files are available via samba on Windows which is pretty neat.

[rudedogg]

I set this up using zfSnap as suggested above.

It's as easy as ssh-ing in, running apt install zfsnap and adding a few scheduled tasks through the web admin:

A built in feature to do this would be really nice though!