On Oct 25, 2014, at 2:33 PM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote: > > On Oct 25, 2014, at 6:24 AM, Marc Joliet <marcec@xxxxxx> wrote: >> >> First of all: does grub2 support booting from a btrfs file system with >> skinny-metadata, or is it irrelevant? > > Seems plausible if older kernels don't understand skinny-metadata, that GRUB2 won't either. So I just tested it with grub2-2.02-0.8.fc21 and it works. I'm surprised, actually. I don't understand the nature of the incompatibility with older kernels. Can they not mount a Btrfs volume even as ro? If so then I'd expect GRUB to have a problem, so I'm going to guess that maybe a 3.9 or older kernel could ro mount a Btrfs volume with skinny extents and the incompatibility is writing. Chris Murphy-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
