Raw disk sharing between VM?

[root_wp]

Hello

It is  possible to share (read-write)  raw disk device between  two Integrity VM?

System  - HP_UX 11.31 VSE

 

Thanks

[Patrick Wallek]

It might be possible, but I'm not sure I would advise it.

I can see lots of possibilities where the data could be corrupted if both VMs are trying to write at the same time.

However, if only one VM at a time will be up and accessing the disk, then that could be OK.

[pradeep m · Accepted solution]

Yes you can share a disk between two VM guests. 

1. Set the SHARE attribute to YES for that disk using the "hpvmdevmgmt" command. Refer the hpvmdevmgmt man page for details.

Example: 

# hpvmdevmgmt -m gdev:/dev/rdsk/c1t1d1:attr:SHARE=YES

2. Now present the shared disk to other guests. 

NOTE: As Patrick mentioned, writing to the share disk at the same time from both the guest might lead to data curruption. 

[root_wp]

It works big Thanks