Date: Wed, 7 May 2003 11:27:09 -0700 (PDT) From: Kirk McKusick <mckusick@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sbin/dump main.c traverse.c Message-ID: <200305071827.h47IR9kV052104@repoman.freebsd.org>
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mckusick 2003/05/07 11:27:09 PDT
FreeBSD src repository
Modified files:
sbin/dump main.c traverse.c
Log:
Dump is hard-wired to believe that it can read disks on
1024-byte boundaries. For many years this was a reasonable
assumption. However, in recent years we have begun seeing
devices with 2048-byte sectors. These devices return errors
when dump tries to read starting in the middle of a sector
or when it tries to read only the first half of a sector.
Rather than change the native block size used by dump (and
thus create an incompatible dump format), this fix checks
for transfer requests that start and/or end on a non-sector
boundary. When such a read is detected, the new code reads
the entire sector and copies out just the part that dump
needs.
Reviewed by: Poul-Henning Kamp <phk@critter.freebsd.dk>
Approved by: re (John Baldwin <jhb@FreeBSD.org>)
Sponsored by: DARPA & NAI Labs.
Revision Changes Path
1.53 +1 -0 src/sbin/dump/main.c
1.32 +47 -4 src/sbin/dump/traverse.c
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