this post was submitted on 04 May 2024
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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And LVM is more than good enough for occasional snapshots before a major upgrade.
What's lvm like compared to btrfs?
Well lvm makes a shit filesystem and btrfs is useless at volume management.
LVM creates "block devices" and is FS agnostic. You can install btrfs on an LVM volume if you wanted. Or any other FS for that matter.
But since it doesn't know anything about the FS it can be a bit more cumbersome to modify volumes (especially when shrinking).