Date: Fri, 8 Aug 2003 11:14:57 -0400 From: Don Bowman <don@sandvine.com> To: Don Bowman <don@sandvine.com>, "'freebsd-scsi@freebsd.org'" <freebsd-scsi@freebsd.org> Subject: RE: Unrecovered read error on scsi drive Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337027421DB@mail.sandvine.com>
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> From: Don Bowman [mailto:don@sandvine.com] > > I have a system which popped out this error after many [500?] hours > of disk stress [swapping, dd]: > > (da0:ahd0:0:0:0): READ(10). CDB: 28 0 0 c7 92 a0 0 0 28 0 > (da0:ahd0:0:0:0): MEDIUM ERROR info:c792bb asc:11,0 > (da0:ahd0:0:0:0): Unrecovered read error field replaceable unit: e4 > sks:80,86 > > However, it claims to have 0 defects: > > # camcontrol defects 0:0:0 -f phys -G > Got 0 defects. > > How can this be? Are there other causes for this unrecovered > read error? Sorry, i forgot to add, I have AWRE and ARRE enabled: # camcontrol modepage 0:0:0 -m 1 AWRE (Auto Write Reallocation Enbld): 1 ARRE (Auto Read Reallocation Enbld): 1 TB (Transfer Block): 0 RC (Read Continuous): 0 EER (Enable Early Recovery): 0 PER (Post Error): 0 DTE (Disable Transfer on Error): 0 DCR (Disable Correction): 0 Read Retry Count: 11 Correction Span: 240 Head Offset Count: 0 Data Strobe Offset Count: 0 Write Retry Count: 5 Recovery Time Limit: 65535
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