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Re: Bug#652275: Guided partitioning should not offer separate /usr, /var, and /tmp partitions; leave that to manual partitioning

On Tue, Dec 27, 2011 at 02:37:26PM +0900, Miles Bader wrote:
> Adam Borowski <kilobyte@angband.pl> writes:
> >> And things may change yet again in the future.  With Btrfs, one can
> >> have a single filesystem with multiple subvolumes.  The subvolumes
> >> can be mounted independently, and also snapshotted independently,
> >> but have a common pool for free data, so unlike partitions any
> >> subvolume can grow/shrink as required.
> >
> > Ie, almost all upsides of LVM.
> Wait, what?  AFAIK, multiple partitions in LVM _don't_ share
> free-space, they're basically independent filesystems, with the
> individual hard allocation limits (and if one wants to _change_ those
> limits, growing-shrinking filesystems in concert with partitions seems
> all too easy for a user to screw up, hosing their data).
> No...?

I meant, btrfs handles almost all reasons you could want LVM for, and then
it adds a pile of goodies on top of that.  Like snapshotting or, as you just
said, shared free space.

In fact, you currently can't have unshared free space yet as subvolume
quotas didn't make it for the 3.2 kernel merge window.  And that's one of
bigger reasons for multiple partitions.

1KB		// Yo momma uses IPv4!

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