Date: Thu, 14 Feb 2008 11:28:44 +0100 From: Ben Stuyts <ben@altesco.nl> To: freebsd-usb@freebsd.org Subject: LaCie hd SYNCHRONIZE CACHE errors Message-ID: <A8832964-7178-4803-B702-7931EBE7F65A@altesco.nl>
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Hello, Now that these drives no longer immediately panic the system (see other thread), I see another problem. The drive is a mini LaCie 250 GB 2.5". On connecting the drive I see: Feb 13 20:44:25 mars root: Unknown USB device: vendor 0x059f product 0x0c41 bus uhub3 Feb 13 20:44:25 mars kernel: umass1: <LaCie LaCie Hard Drive USB, class 0/0, rev 2.00/0.00, addr 3> on uhub3 Feb 13 20:44:26 mars kernel: da1 at umass-sim1 bus 1 target 0 lun 0 Feb 13 20:44:26 mars kernel: da1: <SAMSUNG HM250JI > Fixed Direct Access SCSI-2 device Feb 13 20:44:26 mars kernel: da1: 40.000MB/s transfers Feb 13 20:44:26 mars kernel: da1: 238475MB (488397168 512 byte sectors: 255H 63S/T 30401C) Feb 13 20:44:26 mars kernel: GEOM_LABEL: Label for provider da1s1 is msdosfs/LACIE. uname -a: FreeBSD mars.altus-escon.com 7.0-PRERELEASE FreeBSD 7.0-PRERELEASE #20: Wed Feb 13 20:22:18 CET 2008 root@mars.altus-escon.com:/usr/ obj/usr/src/sys/MARS amd64 When accessing the drive I get lots of these errors: Feb 13 22:27:30 mars kernel: (da1:umass-sim1:1:0:0): SYNCHRONIZE CACHE. CDB: 35 0 0 0 0 0 0 0 0 0 Feb 13 22:27:30 mars kernel: (da1:umass-sim1:1:0:0): CAM Status: SCSI Status Error Feb 13 22:27:30 mars kernel: (da1:umass-sim1:1:0:0): SCSI Status: Check Condition Feb 13 22:27:30 mars kernel: (da1:umass-sim1:1:0:0): ILLEGAL REQUEST asc:20,0 Feb 13 22:27:30 mars kernel: (da1:umass-sim1:1:0:0): Invalid command operation code Feb 13 22:27:30 mars kernel: (da1:umass-sim1:1:0:0): Unretryable error After each message it takes a moment for I/O to start again, so I/O performance is terrible. From reading sys/cam/README.quirks, I see there is a DA_Q_NO_SYNC_CACHE quirk that can be added, but this should only be done on a device or system hang. Is this enough cause? Or is there something else I can try? Thanks, Ben
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