Date: Thu, 07 Oct 2004 16:25:04 +0200 From: "Poul-Henning Kamp" <phk@phk.freebsd.dk> To: Sam <sah@softcardsystems.com> Cc: freebsd-geom@freebsd.org Subject: Re: fdisk/geom, AoE 5.2.1 Message-ID: <24464.1097159104@critter.freebsd.dk> In-Reply-To: Your message of "Thu, 07 Oct 2004 09:55:25 CDT." <Pine.LNX.4.60.0410070951230.25784@athena>
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In message <Pine.LNX.4.60.0410070951230.25784@athena>, Sam writes: >Arg. My goof. I wrote zeros, read zeros and assumed i could >write to the disk. In fact I could - even when I wanted to >read. I won't go into the details, but suffice it to say you >can't do: > >if (bp->bio_flags & BIO_READ) > // do read >else > // do write > >and expect the correct behaviour. :) Please be aware that we have _three_ I/O operations under 5.x and later: BIO_READ, BIO_WRITE and BIO_DELETE. Just return EOPNOTSUPP for BIO_DELETE. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence.
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