topic Re: remove virtual disk from vmguest in Operating System - HP-UX

remove virtual disk from vmguest

DV-Betrieb ORG+IS — Fri, 24 Jul 2009 07:45:20 GMT

Hello folks,

I have a problem with removing a virtual disk from vmguest. Isn't it possible to remove the disk online ?

Here is what I did:

hpvmmodify -P vseux001 -d disk:avio_stor:1,0,6:disk:/dev/rdisk/disk14
hpvmmodify: Unable to dynamically delete device disk:avio_stor:1,0,6:disk:/dev/rdisk/disk14 - Device busy.
hpvmmodify: Guest needs to be restarted (using hpvmstop followed by hpvmstart) for all changes to take effect.

When Í execute hpvmdevmgmt -l all the disk is not displayed anymore. The vmguest has the disk still in its configuration.

hpvmstatus -P vseux001 -V :

<<<<< snip

Guest Device type : disk
Guest Adaptor type : avio_stor
Bus : 1
Device : 0
Function : 0
Target : 6
Lun : 0
Physical Storage type : disk
Physical Device : /dev/rdisk/disk14

<<<<< snip

Any hints that this task can be done without reboot ?

Best regards,

Joerg

Re: remove virtual disk from vmguest

melvyn burnard — Fri, 24 Jul 2009 10:52:22 GMT

couple of questsions:
1) is this the Guest OS disk?
2) If not, is this the ONLY disk on Bus 1?
3) Have you used hpvmstatus -D to check and see if this change is scheduled for next reboot?

I suspect it is NOT the OS Guest disk, and that it is the only device on Bus 1, in which case this is expected behaviour, as HPVM not only removes the disk, but if it is the LAST disk on a bus, it "removes" the virtual I/O card as well, and this is NOT an online change

Re: remove virtual disk from vmguest

cjb_1 — Mon, 27 Jul 2009 13:16:34 GMT

The reboot does sort it but i cant find a workaround without. The -D flag will show the resource has gone.

I'd removed a disk and left the guest in the state you describe for a few weeks and eventually got an issue where 'ioscan -f' hung up and couldn't be killed.

The 4.1 admin guide does state you can to this on the fly.

Call open with HP support at moment. Will update you with the results.

Re: remove virtual disk from vmguest

DV-Betrieb ORG+IS — Wed, 05 Aug 2009 05:47:12 GMT

Hi ,

thanks for the Info. I will open a case at HP , too. We can compare our knowledge if we got some new infos.

Best regards,

Joerg

Re: remove virtual disk from vmguest

cjb_1 — Fri, 07 Aug 2009 06:58:52 GMT

got an answer back.

identify HW address of the device to be moved through ioscans.
on the guest, rmsf -H that device.
on the host, perform the hpvmmodify -d on the device.

device now disappears from guest and hpvmstatus on host.

not elegant, as its nice to see the NO_HW flag before rmsf is run but it works.

Re: remove virtual disk from vmguest

DV-Betrieb ORG+IS — Mon, 10 Aug 2009 13:26:13 GMT

Hi,

thanks for the hint. It works, but I agree its not a nice way ;)

Best regards,

Joerg