Date: Wed, 10 Mar 2004 17:34:08 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Bruce Evans <bde@zeta.org.au> Cc: freebsd-current@FreeBSD.org Subject: Re: Expand libdisk to use 64bit size/offset Message-ID: <200403101734.08022.jhb@FreeBSD.org> In-Reply-To: <20040311054522.T2459@gamplex.bde.org> References: <7m7jxth70h.wl@black.imgsrc.co.jp> <200403101309.32292.jhb@FreeBSD.org> <20040311054522.T2459@gamplex.bde.org>
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On Wednesday 10 March 2004 02:16 pm, Bruce Evans wrote: > On Wed, 10 Mar 2004, John Baldwin wrote: > > On Tuesday 09 March 2004 07:37 pm, Jun Kuriyama wrote: > > > I found sysinstall(8) cannot handle TB class storage. It looks > > > both of libdisk and sysinstall should be fixed. > > > > > > I'm trying to improve this situation, but I'm not sure I'm going to > > > the right direction. Please look this patch (including my debugging > > > stuff and XXX comments which should be resolved/removed). > > This will probably need EFI, since DOS partitions are limited to 2^31 > or 2^32 sectors and the sector size may be restricted to 512. > > > > http://www.imgsrc.co.jp/~kuriyama/BSD/libdisk-20040310.diff > > I didn't look closely. > > > > I choose daddr_t as larger storage for offset, size and end member of > > > "struct chunk". I think offset and end is okay, but I don't know > > > daddr_t for offset is correct or not. > > > > dadd_t is a uint32_t, so it won't help. Just use off_t for chunk > > offset/size/end. > > Erm, daddr_t is (signed) int64_t. It is the correct type for storing > counts of DEV_BSIZE'd blocks (DEV_BSIZE = 512), so it is correct for > sector counts in libdisk to the extent that libdisk is limited to > DEV_BSIZE'd sectors. Counts of blocks of other sizes should use a > different typedef. E.g., ufs uses types ufs1_daddr_t (32-bit ufs1 > block numbers), ufs2_daddr_t (64-bit ufs2 block numbers) and ufs_lbn_t > (64-bit ufs logical block numbers). Bah, I looked for u_daddr_t (which is 32-bit (why?)). -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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