Date: Tue, 19 Nov 2013 06:14:17 +1100 From: Peter Jeremy <peter@rulingia.com> To: John Refling <netbsdrat@gmail.com> Cc: freebsd-fs@freebsd.org, freebsd-questions@freebsd.org Subject: Re: rare, random issue with read(), mmap() failing to read entire file Message-ID: <20131118191417.GA75443@server.rulingia.com> In-Reply-To: <9CB46A22C0BE40029652144B2586462A@d40> References: <9CB46A22C0BE40029652144B2586462A@d40>
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--qMm9M+Fa2AknHoGS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2013-Nov-15 18:56:09 -0800, John Refling <netbsdrat@gmail.com> wrote: >I'm having some very insidious issues with copying and verifying (identica= l) >data from several hard disks. This might be a hardware issue or something >very deep in the disk / filesystem code. I have verified this with several >disks and motherboards. It corrupts 0.0096% of my files, different files >each time! My gut feeling is that this is a hardware issue. Since you've tried different systems, that would seem to rule them out. Have you tried different USB enclosures/cables/etc? I'm never comfortable running disks over USB. Are you able to try ZFS? It inherently checksums data and should quickly show up any hardware issues. --=20 Peter Jeremy --qMm9M+Fa2AknHoGS Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.21 (FreeBSD) iKYEARECAGYFAlKKZwlfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3Bl bnBncC5maWZ0aGhvcnNlbWFuLm5ldDBCRjc3QTcyNTg5NEVCRTY0RjREN0VFRUZF OEE0N0JGRjAwRkI4ODcACgkQ/opHv/APuIeBdQCeKmyMSw9iiFi0B83UUeExuzbd GnwAoLd6UbjK0Ghqazi5ohFWG425TwpK =FiR3 -----END PGP SIGNATURE----- --qMm9M+Fa2AknHoGS--
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