On Wed, Aug 10, 2016 at 4:01 PM, Dave T <davestechs...@gmail.com> wrote:
> I will be very disappointed if I cannot use btrfs + dm-crypt. As far > as I can see, there is no alternative given that I need to use > snapshots (and LVM, as good as it is, has severe performance penalties > for its snapshots). See LVM thin provisioning snapshots. I haven't benchmarked it, but it's a night and day difference from conventional (thick) snapshots. The gotchas are currently there's no raid support, and the snapshots are whole volume. So each snapshot appears as a volume with the same UUID as the original, and by default they're not active. So for me it's a bit of a head scratcher what happens when mounting a snapshot concurrent with another. For Btrfs this ends badly. For XFS it refuses unless using nouuid, but still seems capable of writing to the two volumes without causing problems. But yes, I like Btrfs snapshots and refinks better. *shrug* If you find a Btrfs on dmcrypt problem, it's a serious bug, and I think it would get attention very quickly. -- Chris Murphy -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
