topic Using EFI filesystem in Operating System - HP-UX

Using EFI filesystem

Siddharth Tuli — Thu, 07 Jun 2007 00:05:45 GMT

Hi

There is some data common to all the vpars in an npar. Each of the vpars builds that data. Can one of the vpar create and store the data into a file in EFI partition and all other vpars copy that file to the respective locations in the vpar. Is it good to use EFI partition ? Are there any restrctions ?

Thanks
Siddharth

Re: Using EFI filesystem

Steven E. Protter — Thu, 07 Jun 2007 00:42:00 GMT

Shalom,

I don't think you have a choice about using EFI. I have yet to run into anybody that ran out of space on EFI, at least in the forums.

Think you are good there.

SEP

Re: Using EFI filesystem

Torsten. — Thu, 07 Jun 2007 01:44:23 GMT

Hi,

each vPar owns its own disk with a unique EFI partition. A vPar instance cannot access the disk (or the EFI partition) of another vPar instance.
Why not using other methods like nfs or cp/scp ...

Re: Using EFI filesystem

Siddharth Tuli — Tue, 12 Jun 2007 00:18:42 GMT

Thank you for the responses.

Is there any storage area that is common to all the vpars in an npar (which can be accessed by all the vpars) ?

Thanks
Siddharth

Re: Using EFI filesystem

Torsten. — Tue, 12 Jun 2007 00:42:30 GMT

Yes, if you create a NFS share for example.

Re: Using EFI filesystem

Siddharth Tuli — Tue, 12 Jun 2007 07:09:45 GMT

But nfs shares can be disabled.

vpmon resides on the EFI partition. vpmon brings up all other vpars. Can the other vpar access the vpmon's EFI partition.

Can EFI variables be used for the purpose of sharing data between vpars on an npar ?

Thanks
Siddharth

Re: Using EFI filesystem

Torsten. — Tue, 12 Jun 2007 11:45:36 GMT

> Can EFI variables be used for the purpose of sharing data between vpars on an npar ?

No.

Each partition owns at least 1 boot disk.
Each boot disk has a EFI area (including a vpmon).
Each vPar can only access its own EFI partition.

Each vPar sends and receives information to the active vpmon - the information will be "mirrored" to each vp database.

So your plan is not possible.

Re: Using EFI filesystem

Siddharth Tuli — Tue, 12 Jun 2007 23:37:12 GMT

Thanks Trosten.

Re: Using EFI filesystem

Reshma Malusare — Wed, 13 Jun 2007 00:12:06 GMT

Hi siddharth,
In vpar, users on one partition canot access files or Fs on another partition except NFS...as users on one partition does not imply his presence on another partition..thus ensuring security in vpar.
So solution to your problem lies in above statement i.e NFS.

Thanks & Regards
Reshma

Re: Using EFI filesystem

Siddharth Tuli — Wed, 13 Jun 2007 00:17:54 GMT

Thanks Reshma