topic Re: upgrading to a larger HD in Operating System - HP-UX

upgrading to a larger HD

Mike Spencer — Tue, 26 Apr 2005 12:26:18 GMT

Apr 21, 2005 19:25:22 GMT unassigned

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I have a similar situation to the one referenced in the thread "expanding disk size into a larger disk". I have read all related posts (that I can find) in the forum, but haven't found a complete non-ignite solution. I realize ignite is the preferred method, but I'm curious to know if there is a similar one for "dd".

There was a reference to a Peggy Fong post that sounds like it might be what I'm looking for, but for some reason that link is inaccessible.

http://forums.itrc.hp.com/cm/QuestionAnswer/1,1150,0xa1c6d06ed8c8d4118fef0090279cd0f9,00.html

I have already dd'ed my boot disk to a larger counterpart and re-imported vg00, specifying the new device. I have also re-defined the Boot Data Area. The remaining issue, as I understand it, is that the max_pe is set for the old drive. Since this is set during the vgcreate, it can't be modified without dismantling vg00.

Does anyone have a method for resolving this problem and/or can you provide me with Peggy Fong's post (referenced above)?

Re: upgrading to a larger HD

A. Clay Stephenson — Tue, 26 Apr 2005 12:43:45 GMT

There is supposedly an undocumented, unsupported utility called "vgmodify" which allows modification of the underlying LVM data structures. Even if I talked my HP Mr. Goodwrench into getting it for me, I wouldn't trust it. Dd'ing the data is easy (and rather useless); it's modifying and expanding the LVM data structures that's difficult.

Ignite is the supported and straightforward method.

Re: upgrading to a larger HD

Steven E. Protter — Tue, 26 Apr 2005 12:45:03 GMT

You are apparently a victim of several issues:

1) The thread you refer to seems to have suffered content damage in the October 2003 upgrade. I know content is gradually being recovered, but there is no timetable.

2) Ignite is the only supported methodology for doing what you want to do. Its also kind of easy. You back up vg00 with make_tape_recovery boot off the tape and then can restore your system to a new, larger boot drive merely by intervening when prompted and changing a few parameters.

The safest way to dismantle and re-assemble vg00 is Ignite.

SEP