Re: Can anyone boot a system using btrfs root with linux 3.14 or newer?

Hugo Mills
2014-04-23T22:53:58Z

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On Wed, Apr 23, 2014 at 03:50:18PM -0700, Marc MERLIN wrote:
> On Wed, Apr 23, 2014 at 11:43:03PM +0100, Hugo Mills wrote:
> > On Wed, Apr 23, 2014 at 04:40:33PM -0600, Chris Murphy wrote:
> > > The screen shot provided makes it clear that one of the following kernel parameters is incorrect:
> > >
> > > > root=/dev/mapper/cryptroot
> > >
> > > > rootflags=subvol=root
> > >
> > > So either the dmcrypt volume hasn't been opened, thus isn't available; or rootfs isn't on a subvolume named root found at the top level of the file system. So I'd say this isn't a btrfs problem, rather it's due to some earlier misconfiguration that's preventing rootfs from being mounted.
> >
> > You'll need an initrd to run cryptsetup (or whatever) to collect a
> > passphrase and decrypt the volume before you try to mount it. This
> > sounds like a case for an initrd again.
>
> I think you are confused, that's my config I pasted as an example.
> He does not use dmcrypt in his example.

Ah, OK. Never mind, then.

Hugo.

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