iSCSI, windows 7 and virtio disk

A

alaint

Renowned Member
Mar 21, 2011
18
0
66
Hi,

Question: On a windows 7 (xp and 2008) guest, should I be able to use "virtio" drive on a iSCSI target ?

When I use viostor on a iSCSI storage, every time I run "Crystal Disk Benchmark" on my guest, I get a blue screen on the "4K write test".
It all works fine with IDE, but unfortunately the performance goes down by 25%.

Also tried different combination of proxmox Kernels, viostor, with AoE targets and E1000 instead of virtioNet and they all gave the the same result .. blue screen on the 4k write test.

Use of viostor on local .raw drives seem stable, C.D.B. goes all the way without blue screen.

thanks, alain

----
name: windows.7.x32.raw
ide2: local:iso/Windows_Ent_7_32BIT_English.ISO,media=cdrom
vlan0: virtio=32:BF:2D:xx:xx:xx
bootdisk: virtio0
ostype: wvista
memory: 2048
sockets: 1
ide0: local:iso/virtio-win-0.1-15.iso,media=cdrom
boot: dc
freeze: 0
cpuunits: 1000
acpi: 1
kvm: 1
virtio0: local:104/vm-104-disk-1.raw
onboot: 0
cores: 1
description: windows 7 32bits base
#unstable under load
virtio1: iscsi0:vm-104-disk-1,cache=none
#stable
#ide1: iscsi0:vm-104-disk-1
-
pve-manager: 1.9-24 (pve-manager/1.9/6542)
running kernel: 2.6.32-6-pve
proxmox-ve-2.6.32: 1.9-48
pve-kernel-2.6.32-4-pve: 2.6.32-33
pve-kernel-2.6.32-6-pve: 2.6.32-48
qemu-server: 1.1-32
pve-firmware: 1.0-14
libpve-storage-perl: 1.0-19
vncterm: 0.9-2
vzctl: 3.0.29-3pve1
vzdump: 1.2-16
vzprocps: 2.0.11-2
vzquota: 3.0.11-1
pve-qemu-kvm: 0.15.0-2
ksm-control-daemon: 1.0-6
 
macday said:
please try the pve-qemu-kvm: 0.14.x just to be sure...thank you
Click to expand...

For sure I want to try, I am not a dpkg user so please reassure me ..
If I add "pve1.8" to my apt list, then do a "aptitude install pve-qemu-kvm=0.14.1-1" and "reboot"
.. that will do? and the system will still be stable?

I found a way to use iSCSI with viostor, but I do not like what I found out.
With my current proxmox config 1.9-2.6.32.pvetest .. I downgraded (overwrite) "windows\system32\drivers\viostor.sys" to ver.5.0.1.1 (I think this is a RH release from Sept2010)
.. I vaguely remember they where other issues with "virtio-win-1.1.16.iso", but can't remember if it was the stor or the net driver.. I think it was the Net.
In any case, I do not feel to confident about my move and make me wonder about the Fedora releases.

fyi-I started my tests with 2.6.35 at that time it was the only option for KSM.
 
funny, I would have done it the same way with rpm :rolleyes:

It did change something, with 014.1-1 and the most recent virtiostor.sys (Ver.61.62.102.2000) the CristalDiskMark finished.. no crash on the 4K test.
The blue screen came about 1 minute after.

The old virtiostor.sys (ver.5.0.1.1) and proxmox1.9 setup is still up .. no blue screen.
 
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