On Sun, Aug 02, 2015 at 11:42:25PM -0600, Chris Murphy wrote: > I can't tell what the data and metadata profile are? That it won't > mount degraded makes me think the metadata is not explicitly raid1; > and it either raid0 or accidentally single or dup which can happen at > mkfs time on single device, and just doing btrfs dev add to add > another device. > > I think recovery is difficult but it depends on what sort of critical > information is in those first 32MB other than the superblock. There > are copies of the superblock so that can probably be reconstructed. It's probably that the small empty single chunks left behind by mkfs are still there. I don't think we have a good solution to this yet (other than fixing mkfs so it doesn't happen in the first place). Hugo. -- Hugo Mills | Our so-called leaders speak hugo@... carfax.org.uk | with words they try to jail ya http://carfax.org.uk/ | They subjugate the meek PGP: E2AB1DE4 | but it's the rhetoric of failure. The Police
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