Date: Mon, 7 Sep 1998 20:42:48 +0300 From: Vallo Kallaste <vallo@matti.ee> To: freebsd-scsi@FreeBSD.ORG Subject: ncr: frequent ccb errors and crashes Message-ID: <19980907204248.43962@matti.ee>
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Hello ! After switching completely to scsi, my machine crashes quite frequently, about 1 times for a week or so. What I can say is that this controller I have ( ASUS SC-875 ) caused similar problems in our cache server. I swapped this controller over to an Adaptec 2940UW and problems disappeared completely. Now I have this problematic controller inside my machine and here I go.. Our cache server has two Quantum Viking UW single-ended disks and previously had an ASUS SC-875 controller. Once for a week scsi subsystem crashed with messages shown: Jul 1 18:50:32 vanaema /kernel: ncr0: SCSI phase error fixup: CCB already dequeued (0xf0876800) Jul 1 18:50:45 vanaema /kernel: ncr0: timeout ccb=f08a8c00 (skip) Jul 1 18:50:45 vanaema /kernel: ncr0: timeout ccb=f089f000 (skip) Jul 1 18:50:50 vanaema /kernel: ncr0: timeout ccb=f089f400 (skip) Machine usually stayed up, because system slices are on the one EIDE disk, but cache (squid) area rendered completely unusable. For cache machine I have no other comments, because I swapped controller quickly. My own machine has two Quantum Viking II UW single-ended disks and no IDE devices at all for now. Similar symptoms appeared as before, with one exception - my machine crashes completely. I checked logs, but no messages related to scsi. I have not written down panic messages yet, because maybe this problem is known incompatability between Quantum drives and Sym.Logic controllers ? I think so, because with Adaptec controller all this just works. Can somebody comment this closely or give some guidelines ? I have written to the -questions list about month ago, but have no answer. I don't have any specific ncr driver options set. >From dmesg: ncr0: <ncr 53c875 fast20 wide scsi> rev 0x03 int a irq 9 on pci0.9.0 ncr0: waiting for scsi devices to settle scbus0 at ncr0 bus 0 cd0 at scbus0 target 0 lun 0 cd0: <TOSHIBA CD-ROM XM-6201TA 1030> type 5 removable SCSI 2 cd0: CD-ROM cd0: 10.0 MB/s (100 ns, offset 16) can't get the size sd0 at scbus0 target 5 lun 0 sd0: <QUANTUM VIKING II 4.5WSE 4110> type 0 fixed SCSI 2 sd0: Direct-Access sd0: WIDE SCSI (16 bit) enabled sd0: 40.0 MB/s (50 ns, offset 16) 4350MB (8910423 512 byte sectors) sd1 at scbus0 target 6 lun 0 sd1: <QUANTUM VIKING II 4.5WSE 4110> type 0 fixed SCSI 2 sd1: Direct-Access sd1: WIDE SCSI (16 bit) enabled sd1: 40.0 MB/s (50 ns, offset 16) 4350MB (8910423 512 byte sectors) Please cc: directly to me, I'm not subscribed to -scsi list. Thanks Vallo Kallaste vallo@matti.ee To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message
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