Date: Tue, 05 Feb 2008 18:22:30 +0100 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Joe Peterson <joe@skyrush.com> Cc: freebsd-fs@freebsd.org Subject: Re: Forcing full file read in ZFS even when checksum error encountered Message-ID: <86abmfwc6h.fsf@ds4.des.no> In-Reply-To: <47A88ADE.7050503@skyrush.com> (Joe Peterson's message of "Tue\, 05 Feb 2008 09\:12\:14 -0700") References: <47A73C8D.3000107@skyrush.com> <86prvby5o1.fsf@ds4.des.no> <47A864D9.4060504@skyrush.com> <864pcnxz8f.fsf@ds4.des.no> <47A88ADE.7050503@skyrush.com>
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Joe Peterson <joe@skyrush.com> writes: > Dag-Erling Sm=C3=B8rgrav <des@des.no> writes: > > There is now way to "read the bad data" since an unrecoverable > > checksum error means that ZFS has no idea which of the multiple > > version of the affected block is the right one. > Nope, no mirror, no RAIDZ - just one partition. But as far as I know, th= ere > were no read errors, just a checksum error. A checksum error results from a read error. Check your drive's SMART error log if it has one. It might not be detectable in a surface scan, as the damaged sector will be automatically reassigned if it's written to (which ZFS may very well have done) DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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