Re: /unix linked to /usr/lib/boot/unix_mp - but it's a single processor

From: Anthony F. Fiore (anthony.fiore@NYU.EDU)
Date: Thu Feb 06 2003 - 11:38:51 EST


When was the last time you rebooted?

I think I remember seeing something similar to that after an ML was
applied and a reboot had not yet occured.

-Anthony

Michelle DeVault wrote:

>server/# sar -P ALL 1 3
>sadc: 0551-109 Warning: The kernel data structures are
>not consistent.
>sadc: 0551-109 Warning: The kernel data structures are
>not consistent.
>
>AIX server 3 4 ########## 02/06/03
>
>10:28:21 cpu %usr %sys %wio %idle
>sar: 0551-211 Specify a positive integer for the time
>change.
>sar: 0551-211 Specify a positive integer for the time
>change.
>sar: 0551-211 Specify a positive integer for the time
>change.
>
>
>--- Bill Verzal <Bill_Verzal@BCBSIL.COM> wrote:
>
>
>>Because if you decide to add an additional CPU,
>>you'll need to change it
>>again.
>>
>>The MP kernel has the same functionality as the UP
>>kernel, excepts it adds
>>the MP extensions.
>>
>>I stand my ground - don't change it.
>>
>>What is wrong with sar ?
>>
>>BV
>>
>>
>>
>--------------------------------------------------------------------------------------------------------
>
>
>>Bill Verzal
>>Technical Consultant
>>Forbes Technical Consulting
>>(312) 653-3684
>>bill_verzal@bcbsil.com
>>billverzal@imcingular.com (Pager)
>>888-428-4025 (Pager)
>>MailStop: 27.202B
>>
>>
>>
>> "Michelle
>> DeVault" To:
>>aix-l@Princeton.EDU
>> <adsmigmo@YAHO cc:
>> O.COM> Subject:
>> Re: /unix linked to /usr/lib/boot/unix_mp - but
>>it's a
>> Sent by: "IBM single
>>processor
>> AIX Discussion
>> List"
>> <aix-l@Princet
>> on.EDU>
>>
>>
>> 02/06/2003
>> 09:36 AM
>> Please respond
>> to "IBM AIX
>> Discussion
>> List"
>>
>>
>>
>>
>>
>>
>>Hmmm, but IBM support told me I should.
>>
>>The reason I noticed it was that I was trying to get
>>sar to work. I did what the IBM instructions say to
>>do:
>>1. uncomment the stuff in adm's crontab
>>2. uncomment the stuff in /etc/rc
>>3. Reboot.
>>
>>Still couldn't get sar to run. Called IBM support
>>back and they said to:
>>
>>1. link /unix to /usr/lib/boot/unix_up
>>2. link /usr/lib/boot/unix to /usr/lib/boot/unix_up
>>3. bosboot -ad /usr/ipldevice
>>4. reboot
>>
>>I can't reboot the machine until Sunday, so this is
>>on
>>hold until then.
>>
>>Why do you say "Don't change it"?
>>
>>M.
>>
>>
>>--- Bill Verzal <Bill_Verzal@BCBSIL.COM> wrote:
>>
>>
>>>I have found that this is the case if the install
>>>detects a system that is
>>>MP capable, even if it has only one processor.
>>>
>>>Don't change it.
>>>
>>>BV
>>>
>>>
>>>
>--------------------------------------------------------------------------------------------------------
>
>
>>>Bill Verzal
>>>Technical Consultant
>>>Forbes Technical Consulting
>>>(312) 653-3684
>>>bill_verzal@bcbsil.com
>>>billverzal@imcingular.com (Pager)
>>>888-428-4025 (Pager)
>>>MailStop: 27.202B
>>>
>>>
>>>
>>> "Michelle
>>> DeVault" To:
>>>aix-l@Princeton.EDU
>>> <adsmigmo@YAHO cc:
>>> O.COM> Subject:
>>> /unix linked to /usr/lib/boot/unix_mp - but it's
>>>
>>>
>>a
>>
>>
>>>single
>>> Sent by: "IBM
>>>
>>>
>>processor
>>
>>
>>> AIX Discussion
>>> List"
>>> <aix-l@Princet
>>> on.EDU>
>>>
>>>
>>> 02/04/2003
>>> 04:28 PM
>>> Please respond
>>> to "IBM AIX
>>> Discussion
>>> List"
>>>
>>>
>>>
>>>
>>>
>>>
>>>I have a fairly new (couple months old) B50
>>>
>>>
>>runinng
>>
>>
>>>AIX 4.3.3 ML9. I've been having a devil of a time
>>>getting sar to work, and have noticed that /unix
>>>
>>>
>>is
>>
>>
>>>linked to /usr/lib/boot/unix_mp, not
>>>/usr/lib/boot/unix_up. I think this is what is
>>>causing my sar problem.
>>>
>>>So, how do I fix? Can I just unlink /unix,
>>>
>>>
>>re-link
>>
>>
>>>to
>>>/usr/lib/boot/unix_up, then reboot? Is there
>>>anything
>>>else that I need to do or to check?
>>>
>>>I'll need to take another mksysb after the reboot,
>>>won't I?
>>>
>>>M>
>>>
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>>The information contained in this communication is
>>confidential, private, proprietary, or otherwise
>>privileged and is intended only for the use of the
>>addressee. Unauthorized use, disclosure,
>>distribution or copying is strictly prohibited and
>>may be unlawful. If you have received this
>>communication in error, please notify the sender
>>immediately at (312)653-6000 in Illinois;
>>(972)766-6900 in Texas; or (800)835-8699 in New
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>
>
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--
Anthony Fiore
System Administrator
ITS Operations and Production Services
New York University
Tel: (212) 998-1110
Fax: (212) 995-4120
anthony.fiore@nyu.edu


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