On Mon, Apr 14, 2014 at 10:38:45AM +0000, Holger Hoffstätte wrote: > > So I'm happily using subvolumes and snapshots and was wondering about > subvolume low-level isolation. Assuming metadata=single, would a corrupt > metadata block in one subvolume's directory tree affect any other subvolumes > on the same physical partition, or would the fallout from this bad block be > contained?
With snapshots, potentially the FS trees can be shared as well (that's what a snapshot is -- it's a CoW copy of the FS tree of a subvol), so a corrupt block in the FS tree could be shared between the subvols. With separately-created subvolumes (btrfs sub crea), the FS trees will be independent from each other, but they will still share the same extent tree (and all the other trees). 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 --- You've read the project plan. Forget that. We're going to Do --- Stuff and Have Fun doing it.
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