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Date:      Fri, 16 Nov 2007 15:05:26 -0700 (MST)
From:      Douglas Rodriguez <dcr@physics.utah.edu>
To:        freebsd-questions@freebsd.org
Subject:   Failing Drive
Message-ID:  <Pine.GSO.4.21.0711161456230.24135-100000@fusion.physics.utah.edu>

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I've been getting the following message repeating continuously:

ad1:FAILURE - READ_DMA status=51<READY, DSC, ERROR>
	error=1<ILLEGAL_LENGTH> LBA=216026367
g_vfs_done():ad1s1[READ(offset = 110605467648, length = 16384)]error=5
ad1:FAILURE - READ_DMA status=51<READY, DSC, ERROR>
	error=40<UNCORRECTABLE> LBA=216026367
g_vfs_done():ad1s1[READ(offset = 110605467648, length = 16384)]error=5
ad1:FAILURE - READ_DMA status=51<READY, DSC, ERROR>
        error=1<ILLEGAL_LENGTH> LBA=216026367
g_vfs_done():ad1s1[READ(offset = 110605467648, length = 16384)]error=5
....

The same thing repeats every so often.  What does this mean?  I've read
other threads (Drives Dieing) about possibly shutting down dma or
reinstalling the system, but is that the best solution to this kind of
problem?

Thanks.

~Doug




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