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LUN shared by multiple VM's

Deepak Seth_1
Regular Advisor

LUN shared by multiple VM's

I need mount a LUN (actually a snap LUN from clariion) to different VM guest . Was able to add the device on first VM but then tried to make LUN visible to other VM also but it failed with the following error message.

This command running from VM host system .

/opt/hpvm/bin/hpvmmodify -P hervmd03 -F -a disk:avio_stor::disk:/dev/rdisk/disk7>
hpvmmodify: ERROR (hervmd03): Duplicate backing device '/dev/rdisk/disk72'.
hpvmmodify: ERROR (hervmd03): Unable to add device '/dev/rdisk/disk72'.
hpvmmodify: Unable to create device disk:avio_stor::disk:/dev/rdisk/disk72.
hpvmmodify: Unable to modify the guest.


5 REPLIES
Deepak Seth_1
Regular Advisor

Re: LUN shared by multiple VM's

just notice one more thing , the GUI (System Management Page) option is however showing the above LUN is shared by both VM's .

However ioscan is not showing it on guest .
Do you think rebooting guest will fix the issue ?

Deepak Seth_1
Regular Advisor

Re: LUN shared by multiple VM's

Issues resolved after reboot.

I don't like the the way HP VM works , I need to reboot the VM anytime i need to add a LUN - not good . Is i am missing something ?

Prasanth Thomas
Valued Contributor

Re: LUN shared by multiple VM's

did you get any error message from storage end ?


Regards,
PT.
Kapil Jha
Honored Contributor

Re: LUN shared by multiple VM's

Are you running any cluster over VMs, why you want to share same LUN to other VM.

Well it does not ask for reboot normally!!

Did you see any other issue?
what version of HPVM and HP-UX.

BR,
Kapil+
I am in this small bowl, I wane see the real world......
Deepak Seth_1
Regular Advisor

Re: LUN shared by multiple VM's

These are clariion snap LUNS which needs to be mounted on both VM's from time to time (one at a time only).


T2767BC B.04.00 Integrity VM
ParMgr B.31.02.04.01 Partition Manager - HP-UX

We are on Sept,2008 patch level for Host and all the guest are on March,2009.