Hi All,
I have some questions about presenting LUNS to a virtual machine. My configuration is as follows:
1 HP EVA 8000 that is being presented to a blade bl 456c running Rhel 5. The kernel is basic 2.6.18 xen kernel. I can see the LUNS on the blade, by using multipath. Below is a snippet of mulitpath.
mpath10 (3600508b4001069430001d000017d0000) dm-17 HP,HSV200
[size=100G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 0:0:0:11 sdk 8:160 [active][undef]
mpath3 (3600508b4001069430001d00001960000) dm-5 HP,HSV200
[size=250G][features=1 queue_if_no_path][hwhandler=0]
\_ round-robin 0 [prio=0][active]
\_ 0:0:0:4 sdd 8:48 [active][undef]
Now as you can see the devices are showing up under /dev/sd* and /dev/mapper/mpath*. I can mount the LUNS to blade without any problems. I now want these devices to be seen by the virtual machine created on the san. Below is a my configuration that I have set up for one of my VM's.
VM Config file:
# Automatically generated xen config file
name = "REDDISK"
builder = "hvm"
memory = "2000"
disk = [ 'file:/opt/reddiskd0,hda,w','phy:/dev/mapper/mpath0,sda1,w', ]
vif = [ 'type=ioemu, mac=00:16:3e:4d:d2:ea, bridge=xenbr0', ]
uuid = "57ad8f41-cd50-5e89-985f-6462aa5a5f9b"
device_model = "/usr/lib64/xen/bin/qemu-dm"
kernel = "/usr/lib/xen/boot/hvmloader"
vnc=1
vncunused=1
apic=1
acpi=1
pae=1
vcpus=1
serial = "pty" # enable serial console
on_reboot = 'restart'
on_crash = 'restart'
**************************************************************
I can also run the following command from cli and see the output in my configuration file once I enter this command:
command 1: xm block-attach TXWD_COURT /block/sda sda w
command 2: xm list REDDISK --long | less
results from command 2
domain
(domid 20)
(uuid 57ad8f41-cd50-5e89-985f-6462aa5a5f9b)
(vcpus 1)
(cpu_weight 1.0)
(memory 2000)
(shadow_memory 9)
(maxmem 2000)
(features )
(name REDDISK)
(on_poweroff destroy)
(on_reboot restart)
(on_crash restart)
(image
(hvm
(kernel /usr/lib/xen/boot/hvmloader)
(device_model /usr/lib64/xen/bin/qemu-dm)
(pae 1)
(vcpus 1)
(boot c)
(serial pty)
(vnc 1)
(vncunused 1)
(display localhost:1003.0)
(xauthority /root/.xauthJl2aRE)
(acpi 1)
(apic 1)
(vncpasswd 'None')
)
)
(device
(vif
(backend 0)
(script vif-bridge)
(bridge xenbr0)
(mac 00:16:3e:4d:d2:ea)
(type ioemu)
)
)
(device
(vbd (backend 0) (dev hda:disk) (uname file:/opt/reddiskd0) (mode w))
)
(device (vbd (backend 0) (dev sda:disk) (mode w)))
(device (vkbd (backend 0)))
(device
(vfb
(backend 0)
(type vnc)
(vncunused 1)
(display localhost:1003.0)
(xauthority /root/.xauthJl2aRE)
)
)
(state -b----)
(shutdown_reason poweroff)
(cpu_time 116.031996341)
(online_vcpus 1)
(up_time 3220.21273112)
(start_time 1186604696.56)
(store_mfn 61791)
)
This tells me that the command was ok an that it should be see as sda on my virtual machine ( i think)?
*************************************************************************
So sum up all my questions:
1. Is my configuration file correct to present LUNS to the VM's ?
disk = [ 'file:/opt/reddiskd0,hda,w','phy:/dev/mapper/mpath0,sda1,w', ]
2. Do I need to create a scsi block device in order for this work?
ie mknod or MAKEDEV. Reason being none of the scsi partitions show up at all
I checked cat /proc/partitions and /dev
3.Am I presenting this information wrong to the VM?
4. I have also explored setting up WWID inside the VM but if it can't see the SAN then it does me no good for right now.
I know that this may see confusing but if you need me to clarify then I can do that.
ANY IDEAS OR SUGGESTIONS ?
Thanks in advance,
Tameika
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