Date: Tue, 10 Dec 96 12:50:33 CST From: Joe Greco <jgreco@solaria.sol.net> To: scsi@freebsd.org Cc: curt@execpc.com Subject: Micropolis 9GB drives/NCR-810 Message-ID: <199612101850.MAA24777@solaria.sol.net>
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In search of comments: System: ASUS P/I P55T2P4D, 1 x P133 CPU, 384MB RAM, 3 x NCR-810, 1 x SMC EtherPower 10/100. FreeBSD 2.1.5R. Other details available on request. I recently attempted to replace two 4GB ST-15150N Seagate Barracuda drives with two 9GB Micropolis 3391 drives on a news box. The drives are ccd'd together, across SCSI busses. It mostly-worked. However, after a number of hours of operation, the system would start reporting I/O errors (even on unrelated disks) and nothing I did could clear up this situation, short of a reboot. One odd thing I noticed was the probe message: Dec 6 09:04:44 daily-bugle /kernel: ncr2 <ncr 53c810 scsi> rev 17 int a irq 11 on pci0:12 Dec 6 09:04:44 daily-bugle /kernel: ncr2 waiting for scsi devices to settle Dec 6 09:04:44 daily-bugle /kernel: (ncr2:0:0): "SEAGATE ST32550N 0021" type 0 fixed SCSI 2 Dec 6 09:04:46 daily-bugle /kernel: sd20(ncr2:0:0): Direct-Access Dec 6 09:04:46 daily-bugle /kernel: sd20(ncr2:0:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8. Dec 6 09:04:46 daily-bugle /kernel: 2047MB (4194058 512 byte sectors) Dec 6 09:04:46 daily-bugle /kernel: (ncr2:1:0): "SEAGATE ST32550N 0021" type 0 fixed SCSI 2 Dec 6 09:04:46 daily-bugle /kernel: sd21(ncr2:1:0): Direct-Access Dec 6 09:04:46 daily-bugle /kernel: sd21(ncr2:1:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8. Dec 6 09:04:46 daily-bugle /kernel: 2047MB (4194058 512 byte sectors) Dec 6 09:04:46 daily-bugle /kernel: (ncr2:2:0): "SEAGATE ST31055N 0318" type 0 fixed SCSI 2 Dec 6 09:04:46 daily-bugle /kernel: sd22(ncr2:2:0): Direct-Access Dec 6 09:04:46 daily-bugle /kernel: sd22(ncr2:2:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8. Dec 6 09:04:46 daily-bugle /kernel: 1010MB (2069860 512 byte sectors) Dec 6 09:04:46 daily-bugle /kernel: (ncr2:3:0): "MICROP 3391 -22 P409" type 0 fixed SCSI 2 Dec 6 09:04:46 daily-bugle /kernel: sd23(ncr2:3:0): Direct-Access Dec 6 09:04:46 daily-bugle /kernel: sd23(ncr2:3:0): FAST SCSI-2 100ns (10 Mb/sec) offset 8. Dec 6 09:04:46 daily-bugle /kernel: Dec 6 09:04:46 daily-bugle /kernel: sd23(ncr2:3:0): M_DISCONNECT received, but datapointer not saved: Dec 6 09:04:46 daily-bugle /kernel: data=f04da4 save=f00d78 goal=f00d9c. Dec 6 09:04:46 daily-bugle /kernel: 8681MB (17780058 512 byte sectors) Notice that strange probe for sd23 (same happened for sd13). Removing the 9G drives and replacing the two 4G drives "cured" the problem. I suspect something is mildly funny with these drives, maybe some SCSI god would have some insight or suggestions. ... JG
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