On Sun, Mar 23, 2014 at 03:44:35PM -0700, Marc MERLIN wrote: > If I lose 2 drives on a raid5, -m raid1 should ensure I haven't lost my > metadate. > From there, would I indeed have small files that would be stored entirely on > some of the drives that didn't go missing, and therefore I could recover > some data with 2 missing drives? btrfs's RAID-1 is two copies only, so you may well have lost some of your metadata. n-copies RAID-1 is coming Real Soon Now™ (Chris has it on his todo list, along with fixing all the parity RAID stuff). > Or is it kind of pointless/waste of space? > > Actually, would it make btrfs faster for metadata work since it can read > from n drives in parallel and get data just a bit faster, or is that mostly > negligeable? I don't think we've got good benchmarks from anyone on any of this kind of thing. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- Great oxymorons of the world, no. 9: Standard Deviation ---
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