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[Qemu-devel] [Bug 1576347] Re: Only one NVMe device is usable in Windows
From: |
Sergey Blagodurov |
Subject: |
[Qemu-devel] [Bug 1576347] Re: Only one NVMe device is usable in Windows (10) guest |
Date: |
Wed, 16 Aug 2017 21:18:56 -0000 |
Trying it on Windows 10 guest and QEMU 2.8.0 has the same issue. However, I
noticed that:
Supplying 1 NVMe drive -> Win10 sees it.
Supplying 2 NVMe drives -> Win10 sees only one of them.
Supplying 3 NVMe drives -> Win10 sees only two of them.
So I still have been able to create a ReFS mirrored storage space with two NVMe
disks under QEMU, I just had to pass three drives instead of two:
qemu-system-x86_64 -enable-kvm <...> -drive
file=/media/ssd/NVMe_drvA.qcow2,id=diskNVMeA,format=qcow2,if=none -drive
file=/media/ssd/NVMe_drvB.qcow2,id=diskNVMeB,format=qcow2,if=none -drive
file=/media/ssd/NVMe_drvC.qcow2,id=diskNVMeC,format=qcow2,if=none
-device nvme,drive=diskNVMeA,serial=foo -device
nvme,drive=diskNVMeB,serial=foo -device nvme,drive=diskNVMeC,serial=foo
Hope this helps,
--Sergey
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https://bugs.launchpad.net/bugs/1576347
Title:
Only one NVMe device is usable in Windows (10) guest
Status in QEMU:
New
Bug description:
Full command: qemu-system-x86_64 -enable-kvm -cpu host -smp cores=4 -m
4G -net bridge -net nic -full-screen -drive
file=ovmf_x64.bin,format=raw,if=pflash -drive
file=disks/win16_ide.img,format=raw,cache=none,aio=native -drive
file=disks/one.img,if=none,format=qcow2,id=one -drive
file=disks/two.img,if=none,format=qcow2,id=two -device
nvme,drive=one,serial=E86C3CFC43518D6F -device
nvme,drive=two,serial=2BDAC262CF831698
QEMU version: 2.5.0
Kernel: 4.5.1 (Arch Linux)
When there are two NVMe devices specified, only the second one will be
usable in Windows. The following error is shown under "Device status"
of the failed NVMe controller in Device Manager:
"This device cannot start. (Code 10)
The I/O device is configured incorrectly or the configuration
parameters to the driver are incorrect."
The only thing seems suspicious to me is that the nvme emulation in
qemu does not have WWN/EUI-64 set for the devices, though I have no
idea at all whether that is mandatory:
"C:\Windows\system32>sg_vpd -i PD1
Device Identification VPD page:
Addressed logical unit:
designator type: SCSI name string, code set: UTF-8
SCSI name string:
8086QEMU NVMe Ctrl 00012BDAC262CF831698
C:\Windows\system32>sg_vpd -p sn PD1
Unit serial number VPD page:
Unit serial number: 0000_0000_0000_0000."
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