Yes, it was very annoying that I couldn't "fix" the issue by turning off all the feature@ things as once they are in use, you can't turn them off. Had to rebuild from scratch.
Thanks for fixing! I will grab a daily image with partman 43 in it and give it a go. Regards, Mike On 02/27/2015 04:34 PM, Steven Chamberlain wrote: > tags 775395 + confirmed > user 775395 debian-bsd@lists.debian.org > usertags 775395 + kfreebsd > thanks > > Hi Mike, > > On 09/02/15 03:02, Michael Milligan wrote: >> This may help... 10.1 added a bunch of feature flags that grub may need >> to now support in the ZFS code and are probably tripping this all up. > You're absolutely right, some of the new feature flags are breaking > GRUB; I just confirmed it in a fresh test-install with ZFS mounted on /boot > > This is my fault; I was so sure that GRUB in jessie supported these, > that I requested that `zpool create` no longer use "-d": > http://anonscm.debian.org/cgit/d-i/partman-zfs.git/commit/?id=46b42715da4ee17c95762129600958ff75f6d02d > > GRUB *does* support feature@lz4_compress, but otherwise, only features > that are 'read-only compatible' according to zpool-features(7): > http://man.freebsd.org/zpool-features > > Here is the list of "not read-only compatible' features that are > supported by GRUB - currently only lz4_compress: > http://anonscm.debian.org/cgit/pkg-grub/grub.git/tree/grub-core/fs/zfs/zfs.c#n277 > > The most problematic ones are hole_birth and embedded_data, because they > go "active" as soon as enabled. Some of the others wouldn't initially > be a problem, until that functionality is used, but it's not safe to > enable those by default. > > I think most of the new features are valuable and we should keep them if > possible, most certainly lz4_compress (which can be used to compress > metadata, even if you don't set compression=on for a dataset). So I > suggest we use "-d" but still enable lz4 and all read-only compatible > features. (`zpool create` without "-d" would enable *all* features by > default). > > Thanks for reporting this! > > Regards,
