Date: Mon, 30 Mar 98 00:29:00 -0000 From: mikebw@bilow.bilow.uu.ids.net (Mike Bilow) To: aic7xxx@FreeBSD.ORG Subject: Problems with aic7880 (AGAIN) Message-ID: <51ee91d0@bilow.bilow.uu.ids.net>
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Doug Ledford wrote in a message to Mike Bilow: DL> I would run the EZ-SCSI BIOS routine at startup (the CTRL-A DL> message) and then select the SCSI Disk Utilities, then DL> select Verify Media on the second hard disk. If it doesn't DL> pass this, then the disk needs a low level format to clear DL> out bad sectors and that would be the most likely cause of DL> your problems. Actually, just running "Verify Media" will remap bad sectors if found. I would also remind readers of the list that many drive manufacturers do not enable automatic remapping of sectors on write failure (AWRE). You can check this with the "scsiinfo" utility. With AWRE enabled, you should see something like this: x:~# scsiinfo -e /dev/sda Data from Error Recovery Page ----------------------------- AWRE 1 ARRE 1 TB 0 RC 0 EER 0 PER 0 DTE 0 DCR 0 Read Retry Count 33 Correction Span 48 Head Offset Count 0 Data Strobe Offset Count 0 Write Retry Count 22 Recovery Time Limit 65535 With AWRE enabled, you should monitor the grown defect list to see if new entries appear. If they do, your drive may need replacement. This can also be checked with the "scsiinfo" utility: x:~# scsiinfo -d /dev/sda Data from Defect Lists ---------------------- 21 entries in manufacturer table. Format is: bytes from index [Cyl:Head:Off] Offset -1 marks whole track as bad. 89:0:24812 96:4:24540 97:8:34888 149:4:27168 314:4:50050 427:1:5346 437:6:27732 457:0:20106 584:0:42776 673:8:29282 909:1:46118 977:8:38984 1024:3:1978 1239:8:22312 1265:1:47658 1381:8:49090 1446:8:19694 1620:1:20880 1737:3:43882 2191:2:2500 2295:8:16786 9 entries in grown table. Format is: bytes from index [Cyl:Head:Off] Offset -1 marks whole track as bad. 44:7:11700 52:5:11100 53:5:11100 54:5:11100 55:5:11100 795:7:10500 1838:5:7500 1839:5:7500 1840:5:7500 The "scsiinfo" utility can also be used to modify the settings, but that is beyond the scope of this message. -- Mike To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe aic7xxx" in the body of the message
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