On 06/04/16 19:53, Greg KH wrote:
On Tue, Apr 05, 2016 at 06:42:51PM +1000, Brian Chadwick wrote:
SETUP:

i7 16GB Computer.

1 x PCI-x USB3 adaptor card (i think uses xhci-hcd)04:00.0 USB controller:
Renesas Technology Corp. uPD720202 USB 3.0 Host Controller (rev 02)
     Kernel driver in use: xhci_hcd

2 x USB3 to dual SATA HDD docks. uses JMicron JMS56x Series controllers,
uses uas.ko kernel module
Bus 004 Device 002: ID 152d:9561 JMicron Technology Corp. / JMicron USA
Technology Corp.
Bus 004 Device 003: ID 152d:9561 JMicron Technology Corp. / JMicron USA
Technology Corp.

3 x Western Digital 320GB 3.5" SATA drives

USE:

RAID 5

KERNEL:
4.3.5

System works perfectly as expected.


Change to kernel 4.4.x or 4.5 and RAID 5 doesnt work. I am not sure whether
its actually RAID 5 at fault or if its the USB Attached SCSI driver uas.ko,
or maybe the host driver xhci-hcd.
Can you run 'git bisect' to try to track down the offending commit?

thanks,

greg k-h

Hi, I am unfamiliar with that command, when should it be run, and in what directory?

thanks

Brian C
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