From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from frost.carfax.org.uk ([85.119.82.111]:59852 "EHLO frost.carfax.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751604AbaDWWnH (ORCPT ); Wed, 23 Apr 2014 18:43:07 -0400 Date: Wed, 23 Apr 2014 23:43:03 +0100 From: Hugo Mills To: Chris Murphy Cc: Btrfs BTRFS Subject: Re: Can anyone boot a system using btrfs root with linux 3.14 or newer? Message-ID: <20140423224303.GB2391@carfax.org.uk> References: <000001cf5f19$ac92b2b0$05b81810$@petrovi.no-ip.info> <20140423185413.GF26949@merlins.org> <001401cf5f27$17cae590$4760b0b0$@petrovi.no-ip.info> <20140423191546.GG26949@merlins.org> <002401cf5f2b$7f8d41b0$7ea7c510$@petrovi.no-ip.info> <20140423205819.GH26949@merlins.org> <000001cf5f3e$aaf7a080$00e6e180$@petrovi.no-ip.info> <20140423220312.GK26949@merlins.org> <000a01cf5f42$2b180b30$81482190$@petrovi.no-ip.info> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="NMuMz9nt05w80d4+" In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: --NMuMz9nt05w80d4+ Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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. Hugo. -- === Hugo Mills: hugo@... carfax.org.uk | darksatanic.net | lug.org.uk === PGP key: 65E74AC0 from wwwkeys.eu.pgp.net or http://www.carfax.org.uk --- Computer Science is not about computers, any more than --- astronomy is about telescopes. --NMuMz9nt05w80d4+ Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBU1hB9lheFHXiqx3kAQJ0TQ//Yx0wN0UTQqE/9dpilp5qG1m6oU3pSEqk 0M/To3viu7pNeoslcTqp7oB2BZEV10J3p8Zfg7eoPFCzt8weouivtUfPUt14lu+z JfG3F02GQVsaDdEnOPteLvOyLWGPcOe9x2bGRoBV6wPycOlAVSZLdmyTXL8G3eQ4 UB74Y2xnBHjq1fZN35q6cH8W49m4nRfnGFWy+wy7x2YUQVC4VulYsRGki/zEAqEA i7Eb82l2Lrg4mbhw+CAJeLY40xNrJEwDpsamheJ8cPRFNIZNxEDTrD0lHy9MKPBC AqNg02NaFgADfK0yzrifcThqc3zAmVgWNXZekIEFPuzF1Gc9sYUoIPe8VaRL8152 G3h5OiSF1mDikkp53+oaxhm9l62Tw2VyPyu8M+mjfaFMHZVhX3+2c1IH/aVqBJjB sdLtPeCrAC0FXop8Ou4habzDMli3bIK22rXNDdlIGc8x5OqAQ827AkzAbjO1DssF dwSnpIeGtc6hNwIIXCripCff9JRl/ESKx3miN7fx+Xe4kpIw3/1zXgTZUBrrymxW xh5MI5pwGLd4KMG5zvXWLyqJcrfpj/Twu01lw+aHh0BywmbE+bUdmROyG1CBb2HT d7zCfVGakJzJOcUT+zts6xTC4VEesvdtPppxlEDAmWdYALyKoWZtchP7/db0UVbQ 5P26a+TKI/k= =4bY+ -----END PGP SIGNATURE----- --NMuMz9nt05w80d4+--