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Date:      Sun, 18 Sep 2005 17:17:55 -0400
From:      bob self <bobself@charter.net>
To:        freebsd-questions@freebsd.org
Subject:   What do these warning messages mean (READ_DMA UDMA ICRC error)?
Message-ID:  <432DD983.4010503@charter.net>

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I rearanged my hard drives / dvd burner and am now seeing these 
messages. The system SEEMS to run ok though.

ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=119267359
ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=119267359
ad0: FAILURE - READ_DMA status=51<READY,DSC,ERROR> 
error=84<ICRC,ABORTED> LBA=119267359
g_vfs_done():ad0s1f[READ(offset=44958728192, length=45056)]error = 5
vnode_pager_getpages: I/O read error
vm_fault: pager read error, pid 808 (firefox-bin)
ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=119267359
ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=119267359
ad0: WARNING - READ_DMA UDMA ICRC error (retrying request) LBA=119267519

thanks,
Bob




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