What is org openSUSE snapper?

Snapper is a tool for filesystem snapshot management. During a fresh install of openSUSE, the default is to use Btrfs on root, meaning / and the filesystem XFS on /home. If you select the option to not seperate /home during openSUSE install, the default is for everything, including /home, to be under Btrfs.

Why does openSUSE use Btrfs?

By default, openSUSE is set up using Btrfs and snapshots for the root partition. Snapshots allow you to easily roll back your system if needed after applying updates, or to back up files. Snapshots can easily be managed with Snapper. This is achieved by using Btrfs subvolumes on the root file system.

How do you rollback a snapper?

Using the YaST Snapper module or the snapper command line tool, you can undo the changes made by YaST/zypper by restoring files from the “pre-snapshot”. Comparing two snapshots the tools also allow you to see which files have been changed. You can also display the differences between two versions of a file (diff).

How do I configure snapper?

Creating a new configuration

1. Create a configuration file at /etc/snapper/configs/config based on the default template from /etc/snapper/config-templates .
2. Create a subvolume at /path/to/subvolume/. snapshots where future snapshots for this configuration will be stored.
3. Add config to SNAPPER_CONFIGS in /etc/conf.

Is btrfs better than ext4?

Btrfs is growing at a fast rate, but it is still not considered stable. Until now, the ext4 seems to be a much better choice on the desktop system since it is the default file system, and it is faster than the btrfs when transferring files.

Is ext4 faster than Btrfs?

Until now, the ext4 seems to be a much better choice on the desktop system since it is the default file system, and it is faster than the btrfs when transferring files. The btrfs filesystem is worth looking into, but to completely replace the ext4 on desktop Linux might be several years later.

What is better XFS or Btrfs?

Advantages of Btrfs over XFS The Btrfs filesystem is a modern Copy-on-Write (CoW) filesystem designed for high-capacity and high-performance storage servers. XFS is also a high-performance 64-bit journaling filesystem that is also capable of parallel I/O operations.

Should I use Btrfs or XFS?

Is Btrfs the best file system?

Btrfs exists because the developers wanted to expand the functionality of a file system to include additional functionality such as pooling, snapshots, and checksums. Considering that btrfs will be able to span over multiple hard drives, it’s a good thing that it supports 16 times more drive space than ext4.

Does arch support btrfs?

To enable compression when installing Arch to an empty Btrfs partition, use the compress option when mounting the file system: mount -o compress=zstd /dev/sdxY /mnt/ . Tip: Compression can also be enabled per-file without using the compress mount option; to do so apply chattr +c to the file.

What do you need to know about Snapper in openSUSE?

Snapper is a tool for filesystem snapshot management. This article assumes you will be using Snapper with the Btrfs filesystem. During a fresh install of openSUSE, the default is to use Btrfs on root, meaning / and the filesystem XFS on /home.

Is there a snapper config for root file system?

As you can see YaST has created a snapper config called “root” for your root file system. You can see what snapshots exist: Snapshot #0 always refers to the current system. There might already be several other snapshots depending on the uptime of your system and on whether you already used YaST or zypper.

How to create a snapshot of a post in openSUSE?

Create a snapshot of the type post paired with the pre snapshot number 30. Second command needed to create a pair of snapshots used to save a “before” and “after” state. Creates a stand-alone snapshot (type single) for the default (root) configuration with a description.

When to disable filesystem snapshots in SuSE?

Snapshots will be created even if the disk is almost full in older systems though newer versions of SUSE will automatically disable snapper ‘s automatic snapshots when the root disk or partition is smaller than 16GB. In the case of virtual machines it will quickly fill up the small default disk size that’s allocated.