On 18.05.2017 17:30, Christoph Gohle wrote:
Hi, I have seen several reports around the internet regarding failing io on USB-SATA bridges. However, these reports seem to be partially old and/or fixes proposed are implemented in my kernel but don’t fix things. Therefore I thought I report here again. If this is know/duplicate please apologise. I am running on ubuntu 16.04 LTS with kernel $ ~> uname -a Linux gserv 4.8.0-52-generic #55~16.04.1-Ubuntu SMP Fri Apr 28 14:36:29 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux I was also using the 4.4.0-75-generic version of the kernel before, with same results. I am having a JMS567 bridge with (currently) three disks attached. $ ~> lsusb Bus 002 Device 002: ID 152d:0567 JMicron Technology Corp. / JMicron USA Technology Corp. JMS567 SATA 6Gb/s bridge Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub … $ ~> ls -l /dev/disk/by-id/ total 0 … lrwxrwxrwx 1 root root 9 May 18 00:20 usb-JMicron_Generic_DISK00_0123456789ABCDEF-0:0 -> ../../sdc lrwxrwxrwx 1 root root 10 May 18 00:20 usb-JMicron_Generic_DISK00_0123456789ABCDEF-0:0-part1 -> ../../sdc1 lrwxrwxrwx 1 root root 10 May 18 00:20 usb-JMicron_Generic_DISK00_0123456789ABCDEF-0:0-part9 -> ../../sdc9 lrwxrwxrwx 1 root root 9 May 18 00:20 usb-JMicron_Generic_DISK01_0123456789ABCDEF-0:1 -> ../../sdd lrwxrwxrwx 1 root root 10 May 18 00:20 usb-JMicron_Generic_DISK01_0123456789ABCDEF-0:1-part1 -> ../../sdd1 lrwxrwxrwx 1 root root 9 May 18 00:20 usb-JMicron_Generic_DISK02_0123456789ABCDEF-0:2 -> ../../sde lrwxrwxrwx 1 root root 10 May 18 00:20 usb-JMicron_Generic_DISK02_0123456789ABCDEF-0:2-part1 -> ../../sde1 lrwxrwxrwx 1 root root 10 May 18 00:20 usb-JMicron_Generic_DISK02_0123456789ABCDEF-0:2-part9 -> ../../sde9 … I am running a ZFS filesystem on those… (actually two pools…). The system seems to run fine as long as there is only reading going on or only writing to one disk (possibly from somewhere else)…. However once I start a copy operation (here data coming from one of the above devices and going to the two others (in a mirror configuration), I get frequent io errors from the kernel: May 17 22:53:13 gserv kernel: [ 474.505548] xhci_hcd 0000:00:14.0: ERROR Transfer event for disabled endpoint or incorrect stream ring May 17 22:53:13 gserv kernel: [ 474.505670] xhci_hcd 0000:00:14.0: @000000026e54c460 00000000 00000000 04000000 02088001
4.11 kernel has xhci traces enabled, could you try to reproduce it with 4.11? xhci traces can be enabled with: echo 1 > /sys/kernel/debug/tracing/events/xhci-hcd/enable If you know how to reliably reproduce this then please enable tracing just before triggering this. It generates a lot of data. -Mathias -- 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
