Re: Why is the actual disk usage of btrfs considered unknowable?

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Goffredo,

> So in case you have a raid1 filesystem on two disks; each disk has 300GB
> free; which is the free space that you expected: 300GB or 600GB and why ?

You should see 300GB free.  That's what you'll see with RAID-1 with a
hardware RAID controller, and with MD RAID.  Why would you expect to see
anything else with BTRFS RAID?

Peter Ashford

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