Just read on lwn: "Be aware that there was a recent flag day in the btrfs on-disk format: A commit shortly after the 2.6.30 release changed the on disk format in a way that isn't compatible with older kernels. If you create your btrfs file system using the old, 2.6.30 or earlier kernel and tools, and boot into a newer kernel with the new format, you won't be able to use your file system with a 2.6.30 or older kernel any longer. Linus Torvalds found this out the hard way. But if this does happen to you, don't panic - you can find rescue images and other helpful information on the the btrfs wiki. " Could we backport this change to our 2.6.30 code for openSUSE 11.2, please? Btw. Arvin just implemented feature 306587 - minimal support for creation of a btrfs filesystem in the YaST partitioner, Thanks, Andreas -- Andreas Jaeger, aj@{novell.com,opensuse.org} SUSE LINUX Products GmbH, GF: Markus Rex, HRB 16746 (AG Nürnberg) Maxfeldstr. 5, 90409 Nürnberg, Germany GPG fingerprint = 93A3 365E CE47 B889 DF7F FED1 389A 563C C272 A126