Aug 28, 2015 · Creating a snapshot of a linux system Ask Question Asked 10 years, 5 months ago Modified 6 years, 10 months ago

A snapshot is a read-only, point-in-time copy of the filesystem state. This works because both Btrfs and ZFS are so-called Copy On Write filesystems. Whenever a block of data is changed, the changed …

The command in recent versions of snapper is (I don't remember when it was introduced, but the version in e.g., openSUSE 13.2 supports this): snapper delete number1-number2 So to delete all snapshots …

Aug 26, 2015 · Take snapshot of the current state of the filesystem, do some changes and then be able to restore the system to its original state i.e. to the snapshot I took before. I have CentOS 6.5 with an …

What are the commands to use in btrfs in case I want to: create a (read-only) snapshot of a volume; (do some experiments in the volume); and then rollback the volume to the snapshot?

Oct 28, 2015 · A snapshot will require as much storage space as changes are made to the contents in the logical volume. So, let's say that you have a 30GB volume and you take a snapshot. Initially, no …

Using some snapshot mechanism in an underlying device mapper won't work either, since you'd basically need to unmount the filesystem (or at least remount-ro) in order to obtain a consistent state …

Aug 1, 2025 · Goal I am trying to figure out why my file system has become read-only so I can address any potential hardware or security issues (main concern) and maybe fix the issue without having to …

May 4, 2021 · Here we see that incrementally sending the last snapshot based on the next-to-last snapshot would take approximately 18 GB, which nearly exactly is the amount of data which has …

Jan 24, 2023 · What type of "snapshot" are you considering? Some filesystems are able to create snapshots, and to then back up those snapshots on external media (e.g. ZFS), but you don't mention …