On Fri, 7 Jan 2005, lonblu wrote: > This is from dmesg when I plug the pen
Looks normal. > Transferring a 172K file > > /------------------------------------------------------------------ > -storage: queuecommand called > usb-storage: *** thread awakened. > usb-storage: Command TEST_UNIT_READY (6 bytes) > usb-storage: 00 00 00 00 00 00 > usb-storage: Bulk Command S 0x43425355 T 0xaa1 L 0 F 0 Trg 0 LUN 0 CL 6 > usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes > usb-storage: Status code 0; transferred 31/31 > usb-storage: -- transfer complete > usb-storage: Bulk command transfer result=0 > usb-storage: Attempting to get CSW... > usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes > usb-storage: Status code 0; transferred 13/13 > usb-storage: -- transfer complete > usb-storage: Bulk status result = 0 > usb-storage: Bulk Status S 0x53425355 T 0xaa1 R 0 Stat 0x0 > usb-storage: scsi cmd done, result=0x0 > usb-storage: *** thread sleeping. > usb-storage: queuecommand called > usb-storage: *** thread awakened. > usb-storage: Command WRITE_10 (10 bytes) > usb-storage: 2a 00 00 02 50 4f 00 00 04 00 > usb-storage: Bulk Command S 0x43425355 T 0xaa2 L 2048 F 0 Trg 0 LUN 0 CL 10 > usb-storage: usb_stor_bulk_transfer_buf: xfer 31 bytes > usb-storage: Status code 0; transferred 31/31 > usb-storage: -- transfer complete > usb-storage: Bulk command transfer result=0 > usb-storage: usb_stor_bulk_transfer_sglist: xfer 2048 bytes, 1 entries > usb-storage: Status code 0; transferred 2048/2048 > usb-storage: -- transfer complete > usb-storage: Bulk data transfer result 0x0 > usb-storage: Attempting to get CSW... > usb-storage: usb_stor_bulk_transfer_buf: xfer 13 bytes > usb-storage: Status code 0; transferred 13/13 > usb-storage: -- transfer complete > usb-storage: Bulk status result = 0 > usb-storage: Bulk Status S 0x53425355 T 0xaa2 R 0 Stat 0x0 > usb-storage: scsi cmd done, result=0x0 > usb-storage: *** thread sleeping. > usb-storage: queuecommand called > usb-storage: *** thread awakened. > usb-storage: Command TEST_UNIT_READY (6 bytes) Almost every WRITE command here is followed by a TEST UNIT READY. No wonder the throughput is low! Did you mount the device with -o sync or something similar? > Moreover I don't understand why the name of the device change from sda > to sdb sometimes.... SCSI disk device names are assigned are devices are plugged in. The first device is named sda, the next sdb, and so on. If you're using udev then you can set up a rule to provide a fixed symbolic link to the device, no matter what the name is. Alan Stern ------------------------------------------------------- The SF.Net email is sponsored by: Beat the post-holiday blues Get a FREE limited edition SourceForge.net t-shirt from ThinkGeek. It's fun and FREE -- well, almost....http://www.thinkgeek.com/sfshirt _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
