Hi,
I have been trying for some time to get a JMicron USB/eSata adapter to
work properly with a 4 drive Silicon Image based port multiplier
enclosure without success. The port multiplier and drives work cleanly
off a PCI Silicon Image eSata card using Debian Wheezy.
Bus 002 Device 004: ID 152d:0539 JMicron Technology Corp. / JMicron USA
Technology Corp.
First attempt was with a stock Ubuntu 12.04 kernel, further attempts
were with a 3.2.27 kernel with the patches here manually applied:
http://marc.info/?l=linux-usb&m=132586396527466&w=2
My most recent tests have been with 3.6.0-rc6 (no patches)
In all cases I am getting the following kernel output trying to access
any of the 4 drives (/dev/sdc - /dev/sdf):
[ 463.600972] sd 7:0:0:0: [sdc] Unhandled error code
[ 463.600981] sd 7:0:0:0: [sdc]
[ 463.600986] Result: hostbyte=DID_ERROR driverbyte=DRIVER_OK
[ 463.600992] sd 7:0:0:0: [sdc] CDB:
[ 463.600995] Read(10): 28 00 74 70 6d 70 00 00 08 00
[ 463.601016] end_request: I/O error, dev sdc, sector 1953525104
[ 463.601026] Buffer I/O error on device sdc, logical block 244190638
[ 463.720092] usb 2-4: reset high-speed USB device number 4 using ehci_hcd
Please find the usbmon output (taken while trying to do an fdisk -l on
each of the drives) and hopefully some other useful bits of information
here:
http://biggeeks.org/~harry/3.6.0-rc6/
Any suggestions, patches, etc are welcome, this system is a home system,
and can be easily rebooted to try any fixes suggested.
-Harry
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
