On Wed, Jul 29, 2015 at 12:53 PM, Bruce Schultz <brul...@gmail.com> wrote: > On 29 July 2015 6:18:43 AM AEST, Neil Bothwick <n...@digimed.co.uk> wrote: >> On Wed, 29 Jul 2015 05:29:18 +1000, Bruce Schultz wrote: >>> But I think you do if your btrfs is raid 1. The kernel can't mount >>> multidisk btrfs until it done a btrfs device scan in userspace, run >>> from initramfs. >> >> According to the btrfs wiki you can pass >> device=/dev/sda1,device=/dev/sdb1 on the kernel boot line. > > I'd forgotten that option. Btrfs wiki also says this though: > > "Using device is not recommended, as it is sensitive to device names > changing. You should really be using a initramfs. Most modern distributions > will do this for you automatically if you install their own btrfs-progs > package."
I was wondering if *anyone* has actually seen this work. I'm referring to booting a raid1 btrfs volume without performing a user-space device scan, using only the kernel `rootflags=device` setting. I have been struggling with this in various settings and am slowly starting to believe that this scenario is simply broken.
