On Mon, Jul 22, 2024 at 11:21 PM Alex <[email protected]> wrote:
> Hi, > > I've used fedora since it was called Red Hat, but this is the first time > I've seen disk compression and mounting the same partition on multiple > mount points. > > Can someone help me understand what's happening here? > > UUID=832cbf4d-a17f-457d-b768-bd5c1a26bf86 / btrfs > subvol=root,compress=zstd:1 0 0 > UUID=a3e1f06d-f666-442f-9cd5-4d2833552e9c /boot ext4 > defaults 1 2 > UUID=832cbf4d-a17f-457d-b768-bd5c1a26bf86 /home btrfs > subvol=home,compress=zstd:1 0 0 > > This is the fstab from my new default fedora40 server install. Why is it > mounting /dev/sda3 (PERC RAID5) on both root and home? > > I'm also curious about the real-time disk compression. I wasn't aware it > could be used on the root filesystem. > https://btrfs.readthedocs.io/en/latest/Compression.html > > I have another fedora38 server that I plan to upgrade shortly. Can I > perform an update in place to do the same with my fedora38 server and xfs > or it is only supported on btrfs? > > What is the benefit of mounting the same partition on multiple mount > points? > This one of the benefits of btrfs -- root and home are btrfs sub-volumes. They share the space of the the parent volume, so inexperienced users don't end up with lots of free space one one partition and no free space on another. -- George N. White III
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