Re: why are / and /home the same filesystem?

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On Tue, 2022-02-08 at 13:56 +0100, Peter Boy wrote:
> > On the other hand, the traditional approach has only a poor
> > solution to
> > restrict directories. At installation time, the harddisk can be
> > partitioned so that every directory (eg. /usr, /var/, ...) that
> > needs a
> > limit gets its own partition. The obvious problem is that those
> > limits
> > cannot be changed without a reinstallation. The btrfs subvolume
> > feature
> > builds a bridge. Subvolumes correspond in many ways to partitions,
> > as
> > every subvolume looks like its own filesystem. With subvolume
> > quota, it
> > is now possible to restrict each subvolume like a partition, but
> > keep
> > the flexibility of quota. The space for each subvolume can be
> > expanded
> > or restricted on the fly.
> 
> The quote describes a situation which has gone for more of a decade
> now. Since we have LVM (when got that part of the Linux kernel?
> kernel 2.6? 2004 or so? Don’t know exactly), no one would partition a
> hard disk along file system subdirectories. You create logical
> volumes instead, which can easily "changed without a reinstallation“
> and space for any logical volume "can be expanded
> or restricted on the fly“. The latter even easier with „thin
> provisioning“. And of course you can do backups and restores via
> snapshot, it's called LVM snapshot. What a surprise.

I've been using BTRFS for several years now and it suits me. I could
never get my head around LVM and considered it overkill for what most
workstation users need, but that's a matter of personal taste.

poc
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