Re: San Disks and boot device with powerpath

From: Clifton, Pablo (Pablo.Clifton_at_BCBSFL.COM)
Date: 02/23/05

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    Date:         Wed, 23 Feb 2005 15:03:23 -0500
To: aix-l@Princeton.EDU

    John-

    You need to run:

            /usr/sbin/pprootdev fix

    Right now, I'm pretty sure your system shows:

            lsvg -p rootvg
                    hdiskpower0

    Can you run:

            powermt display dev=hdiskpower0

    Should return output like:

    Pseudo name=hdiskpower0
    Symmetrix ID=000185704866
    Logical device ID=00A7
    state=alive; policy=SymmOpt; priority=0; queued-IOs=0
    ========================================================================
    ======
    ---------------- Host --------------- - Stor - -- I/O Path - --
    Stats ---
    ### HW Path I/O Paths Interf. Mode State Q-IOs
    Errors
    ========================================================================
    ======
      1 fscsi1 hdisk15 FA 13bA active alive 0
    0
      0 fscsi0 hdisk3 FA 4bA active alive 0
    0

    Run:

            pprootdev fix
                    this will run bosboot- and tell you powerpath boot is
    still enabled for next boot

            lsvg -p rootvg
                    should show an hdisk and not an hdiskpower device at
    that point
                    ** note- rootvg is still protected with failover if you
    have multiple HBAs configured

            lspv | grep rootvg
                    should show rootvg on multiple hdiskXX devices now

            bosboot commands will now work

            bootlist -om normal hdiskXX hdiskYY
            (add the underlying hdisks making up the power device to your
    bootlist- hdisk15 and 3 in my case)

            add pprootdev fix to a startup script so it is run each time the
    system reboots.

    thanks,
    pablo 

    ---
Pablo Clifton
Storage Administrator
-----Original Message-----
From: IBM AIX Discussion List [mailto:aix-l@Princeton.EDU] On Behalf Of
Jason delaFuente
Sent: Wednesday, February 23, 2005 2:26 PM
To: aix-l@Princeton.EDU
Subject: Re: San Disks and boot device with powerpath
The bosboot command uses the link /dev/ipldevice.  To get around a
similar problem once, not related to EMC though, I deleted the
/dev/ipldevice and recreated it as a hard link to the device I wanted to
use as the boot device.
Jason de la Fuente
>>> jriorda2@CSC.COM 02/23/05 01:10PM >>>
Hello,
I have an lpar that is attached to the san.  For reasons that I could
not control we have all the volume groups coming from the SAN.  So,
rootvg is also on the san.  One problem I keep having is when I try to
load updates the updates fail with  " 0503-409 bosboot verification
starting...
" 0503-497 An error occurred during bosboot verification processing.
I think I know why as powerpath renames "hdisk0" to hdiskpower0.  When I
try to run bosboot -a it fails at if can't find /dev/hdisk0 hd5.
I thought you could run "powermt" with a switch to get the system to
recognize hdiskpower0 as the boot device.
Anyone heard of this?
Thanks
John
John Riordan
Unix Systems Administrator
CSC / Bath Iron Works
Bath, Maine
jriorda2@csc.com
207.442.1094 -Office
207.504.0140  -Cell
580.6611 -Page
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    Relevant Pages

    • San Disks and boot device with powerpath
      ... I have an lpar that is attached to the san. ... " 0503-497 An error occurred during bosboot verification processing. ... Unix Systems Administrator ... bind CSC to any order or other contract unless pursuant to explicit written ...
      (AIX-L)
    • Re: San Disks and boot device with powerpath
      ... The bosboot command uses the link /dev/ipldevice. ... I have an lpar that is attached to the san. ... recognize hdiskpower0 as the boot device. ... bind CSC to any order or other contract unless pursuant to explicit ...
      (AIX-L)