topic Re: Rezoned EVA not lvmtab out of date in Operating System - HP-UX

Rezoned EVA not lvmtab out of date

Kevin P Bannister — Mon, 24 May 2010 13:01:03 GMT

Hi Folks,
Our EVA team recreated the fabric on our eva.

we are running hp-ux 11.31 server has 2 hba's

(alsmp2):/:# vgdisplay /dev/vg05
vgdisplay: Warning: couldn't query physical volume "/dev/dsk/c6t0d4":
The specified path does not correspond to physical volume attached to
this volume group
and "/dev/dsk/c2t0d4":
and "/dev/dsk/c8t0d4":

looking at lvmtab all links failed except /dev/dsk/c4t0d4

thus I tried
(alsmp2):/:# ioscan -m dsf /dev/dsk/c4t0d4
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk28 /dev/dsk/c4t0d4

(alsmp2):/:# ioscan -m dsf /dev/disk/disk28
Persistent DSF Legacy DSF(s)
========================================
/dev/disk/disk28 /dev/dsk/c4t0d4
/dev/dsk/c24t0d4
/dev/dsk/c16t0d4
/dev/dsk/c20t0d4

Now can I run vgreduce to clear the redundant links as only one is still working.
Then can I run vgextend with the new links I get above?

Also can I do it on a live system as the old links do not work anyway?

Please the exact command would help a stressed administrator.
Thanks
Kevin

Re: Rezoned EVA not lvmtab out of date

Pete Randall — Mon, 24 May 2010 13:09:13 GMT

man vgscan:

The vgscan command allows the re-creation of the /etc/lvmtab file and possibly the associated volume group device files. This command should be run only in the event of a catastrophic error such as the deletion of the /etc/lvmtab file or the mismatch of names of the physical volumes in the /etc/lvmtab file to the actual physical volume path configuration.

Pete

Re: Rezoned EVA not lvmtab out of date

Aneesh Mohan — Mon, 24 May 2010 13:13:50 GMT

do,

mv /etc/lvmtab /etc/lvmtab.bck
vgscan -v -N
vgchange -a y
lvlnboot -R

Aneesh

Re: Rezoned EVA not lvmtab out of date

S. Ney — Mon, 24 May 2010 20:22:04 GMT

I've attached a doc with scsimgr commands. Page 28 and go forward from there.

Re: Rezoned EVA not lvmtab out of date

Kevin P Bannister — Mon, 07 Jun 2010 09:04:20 GMT

Used feedback but used commands
vgreduce and vgextend to fix .