On Sat, 2015-04-04 at 15:48 -0400, Alan Stern wrote: > > Is that really all? Was there a "UAS is blacklisted for this device" > line in the kernel log? It looks like the usb-storage driver didn't do > anything at all with the device. Yes that's it. Using xhci at super speed, blacklisting uas is ignored and the uas module apparently loaded anyway. Here's a small snipet of dmesg w/uas blacklisted in usr/lib/modprobe.d/dist-blacklist.conf using xhci at super speed. 3.329222] usb 1-10: new full-speed USB device number 10 using xhci_hcd [ 3.494369] usb 1-10: New USB device found, idVendor=0cf3, idProduct=0036 [ 3.494372] usb 1-10: New USB device strings: Mfr=0, Product=0, SerialNumber=0 [ 3.500030] usbcore: registered new interface driver usb-storage [ 3.501375] usbcore: registered new interface driver uas [ 3.502435] ums-realtek 1-9:1.0: USB Mass Storage device detected [ 3.512254] scsi host5: usb-storage 1-9:1.0 But with ehci or xhci w/usb2 cable blacklisting succeeded and a message was printed in the logs. Also note the Quirk match. [ 192.802720] xhci_hcd 0000:00:14.0: Endpoint 0x2 ep reset callback called [ 192.844585] usb 1-2: UAS is blacklisted for this device, using usb-storage instead [ 192.844588] usb-storage 1-2:1.0: USB Mass Storage device detected [ 192.844990] usb-storage 1-2:1.0: Quirks match for vid 174c pid 55aa: 400000 [ 192.845004] scsi host5: usb-storage 1-2:1.0 [ 192.845065] usbcore: registered new interface driver usb-storage Another usbmon trace but with the uas module renamed. ffff88040c22f6c0 1404716006 S Ci:2:001:0 s a3 00 0000 0001 0004 4 < ffff88040c22f6c0 1404716087 C Ci:2:001:0 0 4 = a0020000 ffff88040c22f6c0 1404716097 S Ci:2:001:0 s a3 00 0000 0002 0004 4 < ffff88040c22f6c0 1404716114 C Ci:2:001:0 0 4 = 03020100 ffff88040c22f6c0 1404716120 S Co:2:001:0 s 23 01 0010 0002 0000 0 ffff88040c22f6c0 1404716132 C Co:2:001:0 0 0 ffff88040d21fd80 1404817133 S Ii:2:001:1 -115:2048 4 < ffff88040c22f6c0 1404817151 S Ci:2:001:0 s a3 00 0000 0002 0004 4 < ffff88040c22f6c0 1404817183 C Ci:2:001:0 0 4 = 03020000 ffff88040c22f6c0 1404817325 S Ci:2:001:0 s a3 00 0000 0002 0004 4 < ffff88040c22f6c0 1404817342 C Ci:2:001:0 0 4 = 03020000 ffff88040c22f6c0 1404817347 S Co:2:001:0 s 23 03 0004 0002 0000 0 ffff88040c22f6c0 1404817360 C Co:2:001:0 0 0 ffff88040c22f6c0 1404868129 S Ci:2:001:0 s a3 00 0000 0002 0004 4 < ffff88040c22f6c0 1404868161 C Ci:2:001:0 0 4 = 03021000 ffff88040c22f6c0 1404919143 S Co:2:001:0 s 23 01 0014 0002 0000 0 ffff88040c22f6c0 1404919184 C Co:2:001:0 0 0 ffff88040c22f6c0 1404919192 S Co:2:001:0 s 23 01 001d 0002 0000 0 ffff88040c22f6c0 1404919205 C Co:2:001:0 0 0 ffff88040c22f6c0 1404919209 S Co:2:001:0 s 23 01 0019 0002 0000 0 ffff88040c22f6c0 1404919220 C Co:2:001:0 0 0 ffff88040c22f6c0 1404919224 S Co:2:001:0 s 23 01 0010 0002 0000 0 ffff88040c22f6c0 1404919235 C Co:2:001:0 0 0 ffff88040c22f6c0 1404919240 S Ci:2:001:0 s a3 00 0000 0002 0004 4 < ffff88040c22f6c0 1404919256 C Ci:2:001:0 0 4 = 03020000 ffff88040c22f6c0 1404930049 S Ci:2:002:0 s 80 06 0100 0000 0008 8 < ffff88040c22f6c0 1404930103 C Ci:2:002:0 0 8 = 12010003 00000009 ffff88040c22f6c0 1404930130 S Ci:2:002:0 s 80 06 0100 0000 0012 18 < ffff88040c22f6c0 1404930179 C Ci:2:002:0 0 18 = 12010003 00000009 4c17aa55 00010203 0101 ffff88040c22f6c0 1404930195 S Ci:2:002:0 s 80 06 0f00 0000 0005 5 < ffff88040c22f6c0 1404930235 C Ci:2:002:0 0 5 = 050f1600 02 ffff88040c22f6c0 1404930250 S Ci:2:002:0 s 80 06 0f00 0000 0016 22 < ffff88040c22f6c0 1404930288 C Ci:2:002:0 0 22 = 050f1600 02071002 02000000 0a100300 0e00010a ff07 ffff88040c22f6c0 1404930306 S Ci:2:002:0 s 80 06 0200 0000 0009 9 < ffff88040c22f6c0 1404930402 C Ci:2:002:0 0 9 = 09027900 010100c0 12 ffff88040c22f6c0 1404930420 S Ci:2:002:0 s 80 06 0200 0000 0079 121 < ffff88040c22f6c0 1404930511 C Ci:2:002:0 0 121 = 09027900 010100c0 12090400 00020806 50000705 81020004 0006300f 00000007 ffff88040c22f480 1404930533 S Ci:2:002:0 s 80 06 0300 0000 00ff 255 < ffff88040c22f480 1404930575 C Ci:2:002:0 0 4 = 04030904 ffff88040c22f480 1404930597 S Ci:2:002:0 s 80 06 0303 0409 00ff 255 < ffff88040c22f480 1404930644 C Ci:2:002:0 0 32 = 20035500 53004200 33002d00 53004100 54004100 2d005500 41005300 50003100 ffff88040c22f480 1404930657 S Ci:2:002:0 s 80 06 0302 0409 00ff 255 < ffff88040c22f480 1404930696 C Ci:2:002:0 0 18 = 12035000 6c007500 67006100 62006c00 6500 ffff88040c22f480 1404930707 S Ci:2:002:0 s 80 06 0301 0409 00ff 255 < ffff88040c22f480 1404930748 C Ci:2:002:0 0 26 = 1a033100 32003300 34003500 36003700 38003900 30003100 3400 ffff88040c22f900 1404932378 S Co:2:002:0 s 00 09 0001 0000 0000 0 ffff88040c22f900 1404932421 C Co:2:002:0 0 0 > > This seems to be a separate problem from the original one. > > > usbmon trace using ehci: > ... > > Comparing this with the original usbmon trace, it looks like the first > problem in the xHCI trace shows up when we try to transfer more than > 122880 bytes. A 196608-byte transfer has to be aborted after 30 > seconds, and only 65536 bytes were received. (Note that 122880-byte > transfers succeeded in both the EHCI and xHCI-with-a-USB-2-cable > traces.) > > Perhaps this drive needs some sort of max_sectors restriction. > > Alan Stern Okay, is there a patch i can try? Thanks for your help with this. Steve -- 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
