SafePoints

[anonprivate]

I used to use Windows and it was common practice for me to create safe points on occasions to ensure that I could always reverse, if necessary.

Is this feature possible in KUBUNTU.

Thanks

[oshunluvr]

Safe points?

[Feathers McGraw]

Do you want to create a snapshot of the system that you can roll back to if you mess stuff up?

I think lots of people (oshunluvr included if i'm not mistaken) use Btrfs for that. It's on my bucket list of things to try, sounds like it has some great features!

[oshunluvr]

Oh yeah - If you mean rollback, as Feathers stated the btrfs filesystem supports it, but not Ubuntu itself. I can highly recommend btrfs.

[Rog132]

Restore point ?

ubuntu restore point like windows: https://www.google.com/search?q=ubun...t+like+windows

Few hits:

- Is there a “restore point” in Linux (Debian/Ubuntu) like Windows?: http://superuser.com/questions/16371...u-like-windows
- Create system restore point in Ubuntu via TimeShift: http://ubuntuhandbook.org/index.php/...via-timeshift/

[GreyGeek]

This is one of the reasons why I switched to btrfs.

How to work with snaphots in KUubuntu's layout

In order to work with snapshots of / or /home in the Ubuntu layout it is very convenient to mount the btrfs filesystem at a separate location, and work from the top of the btrfs tree, rather than from the mounted subvolumes.
sudo mount /dev/sdX# /mnt
Create snapshots

To create a snapshot use
sudo btrfs subvolume snapshot /mnt/@ /mnt/@_snapshotthis will create a snapshot of the @ subvolume named @_snapshot located also in the top of the btrfs tree.

Rollback to a snapshot

To roll back to a snapshot, you simply need to change its name to the name that ubuntu mounts, using
sudo mv /mnt/@ /mnt/@_badroot
sudo mv /mnt/@_snapshot /mnt/@and reboot.

Delete a snapshot

To delete a snapshot use

sudo btrfs subvolume delete /mnt/@_badrootbtrfs snapshots are subvolumes in themselves, and self-contained, deleting the old @ subvolume like this is fine, provided we have a replacement.

Snapshots are created instantly.

You can create a snapshot of both @ and @home before you do an update or major change. If, after the update things are not right you can revert to previous condition. While there are programs to do this automatically ("snapper, etc.) the manual process is so easy it is, IMO, much better to do it manually and control the disk space usage that way.
NOTE: The btrfs-tools command ''set-default'' will break Ubuntu's layout. DO NOT use it. If you inadvertantly use it you can reverse it by using

sudo mount /dev/sdX# /mnt
sudo btrfs subvolume set-default 5 /mnt