On Wed, 2017-03-01 at 13:27 -0800, Stephen Hemminger wrote: > Ok here is much better data, wasn't accounting for the offset in the > payload But now both responses are the same: > Working 4.10 [...] > [ 1.048920] hv_storvsc: INQUIRY cmd 0x12 0x0 0x0 scsi status 0x0 > srb status 0x20 length 36 > [ 1.048920] hv_storvsc: payload size 288 count 1 offset 1024 len > 36 pfn 0x1f15d7 > [ 1.048921] hv_storvsc: sg 0: phys 0x1f15d7000 virt > ffff9270b15d7000 offset 0x400 length 36 > [ 1.048922] data: 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 ................ > [ 1.048923] data: 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 ................ > [ 1.048923] data: 00000020: 00 00 00 00 > .... > [ 1.048942] scsi host1: scsi scan: INQUIRY result too short (5), > using 36 > > > Broken 4.11 [...] > [ 1.812926] hv_storvsc: INQUIRY cmd 0x12 0x0 0x0 scsi status 0x0 > srb status 0x20 length 36 > [ 1.812927] hv_storvsc: payload size 288 count 1 offset 2816 len > 36 pfn 0x1f198b > [ 1.812928] hv_storvsc: sg 0: phys 0x1f198b000 virt > ffff9a42f198b000 offset 0xb00 length 36 > [ 1.812953] data: 00000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 ................ > [ 1.812953] data: 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 > 00 00 00 ................ > [ 1.812954] data: 00000020: 00 00 00 00 > .... > [ 1.813258] scsi host1: scsi scan: INQUIRY result too short (5), > using 36 Hyper-v is returning a buffer of zeros for INQUIRY to the offline device in both cases ... that means the problem isn't where I thought it was. James
