Date: Thu, 11 Nov 2004 20:27:09 +0200 From: Ruslan Ermilov <ru@FreeBSD.org> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-alpha@FreeBSD.org Subject: Re: Standard bsdlabel(8) layout not understood by Alpha bootblocks? Message-ID: <20041111182709.GD5201@ip.net.ua> In-Reply-To: <200411100821.22374.jhb@FreeBSD.org> References: <20041110082702.GE65475@ip.net.ua> <200411100821.22374.jhb@FreeBSD.org>
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--3Pql8miugIZX0722 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Nov 10, 2004 at 08:21:22AM -0500, John Baldwin wrote: > On Wednesday 10 November 2004 03:27 am, Ruslan Ermilov wrote: > > Hi, > > > > When migrating to a larger disk on my AlphaPC 164SX yesterday, > > I've found that the standard bsdlabel(8) layout is not understood > > by the Alpha bootblocks. By "standard" I mean that the `a' > > partition holding the root file system starts at offset 16. > > > > I did "bsdlabel -B -w da1 auto", then split the auto-created > > `a' partition (that starts from offset 16) to /, /usr, /tmp, > > and /var, then used newfs/mount/dump/restore to copy file > > systems to a new location. > > > > After a reboot, bootblocks complained that /boot/loader was > > not found. > > > > I re-edited the label, and changed the partition `a' to start > > from offset 0, doing another newfs/mount/dump/restore cycle, > > this resulted in a mountable disk. > > > > This is with 6.0-CURRENT... >=20 > Yes, there is no standard. See sys/disklabel.h and note that there are= =20 > different offsets for different archs. >=20 > #if defined(__i386__) || defined(__amd64__) || defined(__ia64__) > #define LABELSECTOR 1 /* sector containing label */ > #define LABELOFFSET 0 /* offset of label in sector */ > #endif >=20 > #ifdef __alpha__ > #define LABELSECTOR 0 > #define LABELOFFSET 64 > #endif >=20 Pardon my ignorance, but what does this have to do with the problem I'm describing? The label in both cases is in sector 0, it's the start of the partition `a' that matters. Cheers, --=20 Ruslan Ermilov ru@FreeBSD.org FreeBSD committer --3Pql8miugIZX0722 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.6 (FreeBSD) iD8DBQFBk679qRfpzJluFF4RAjkDAJwPEUMfucHgQtIqHT0OMa6cYl6HkwCdFUHh 2zUjKqrsGiXMAYeUYCeE2EU= =2LHl -----END PGP SIGNATURE----- --3Pql8miugIZX0722--
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