No subject


Thu Sep 26 10:19:11 MST 2013


e 'standard' raw devices without a 'raw' command --raw device level perform=
ance with no OS system-level buffering=0A=
 or caching overhead. But this was for that build of RHEL (6.5?) and I am n=
ot sure about other builds or variants of LINUX=2C in regards to setting up=
 raw devices for ASE.
=0A=

=0A=
-Rob.=0A=
=0A=
=0A=
=0A=
=0A=
From:=0A=
David.Louie at blackrock.com
=0A=
To: robhendershot at hotmail.com=3B =0A=
c.baker at sap.com=3B mark.mumy at sap.com=3B =0A=
asif.arif at sybaseproducts.com=3B iqug at dssolutions.com
=0A=
Subject: RE: [IQUG] IQ 16.0 raw devices on Linux
=0A=
Date: Wed=2C 23 Apr 2014 16:30:44 +0000=0A=
=0A=
I=92ll need to get more info from my admin team.   We don=92t run the raw u=
tility for ASE on Linux but do on IQ hence the issue.=0A=
 =0A=
=0A=
=0A=
From: Rob Hendershot [mailto:robhendershot at hotmail.com]=0A=

=0A=
Sent: Wednesday=2C April 23=2C 2014 12:20 PM
=0A=
To: Baker=2C Chris=3B Mumy=2C Mark=3B Louie=2C David=3B Asif Arif=3B =0A=
iqug at dssolutions.com
=0A=
Subject: RE: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
=0A=
 =0A=
=0A=
This is really a Linux 'thing' and a needed command to use raw devices in t=
he Linux setting. Regardless if it's IQ=2C ASE=2C DB2=2C or Oracle=2C etc=
=2C if you are using=0A=
 raw devices=2C this is the 'standard' step that needs to be completed. Bel=
ow is info from DB2 (as an example an explanation) concerning raw on Linux:
=0A=

=0A=
Procedure:
=0A=

=0A=
Linux has a pool of raw device nodes that must be bound to a block device b=
efore raw I/O can be performed on it. There is a raw device controller that=
 acts as the central repository of raw to block device binding information.=
 Binding is performed using a utility=0A=
 named raw=2C which is normally supplied by the Linux distributor.
=0A=

=0A=

=0A=
FYI=2C
=0A=

=0A=

=0A=
-Rob.=0A=
=0A=
=0A=
=0A=
=0A=
From: =0A=
c.baker at sap.com
=0A=
To: mark.mumy at sap.com=3B =0A=
David.Louie at blackrock.com=3B asif.arif at sybaseproducts.com=3B=0A=
iqug at dssolutions.com
=0A=
Date: Wed=2C 23 Apr 2014 16:06:04 +0000
=0A=
Subject: Re: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
ASE devices would still require the =91raw=92 command as well.=0A=
 =0A=
What is your =91standard=92 way of managing?  Is ASE actually using VMFS fi=
le devices?  If you are using VMFS raw for IQ=2C then you will not be using=
 multiplex=2C so you could use=0A=
 file system as well=2C if ASE is.=0A=
 =0A=
Chris=0A=
 =0A=
=0A=
Chris Baker | Solution Advisor Expert=0A=
 | Enterprise Systems Group | SAP
=0A=
8 King Street East=2C Suite 1400=2C Toronto=2C Ontario=2C M5C 1B5=2C Canada=
=20
=0A=
T +1 647-426-0673 | M +1 647-224-2033 | TF +1 866-716-8860=0A=
c.baker at sap.com |=0A=
www.sap.com=0A=
 =0A=
https://sap.na.pgiconnect.com/I826572=0A=
Conference tel: 1-866-312-7353=2C=2C9648565377#=0A=
 =0A=
Come see ASE 16 @ ISUG Atlanta April 14-17=2C 2014=0A=
http://my.isug.com/conference=0A=
=0A=
 =0A=
=0A=
=0A=
From:=0A=
iqug-bounces at iqug.org [mailto:iqug-bounces at iqug.org]=0A=
On Behalf Of Mumy=2C Mark
=0A=
Sent: Wednesday=2C April 23=2C 2014 12:02 PM
=0A=
To: Louie=2C David=3B Asif Arif=3B iqug at dssolutions.com
=0A=
Subject: Re: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
=0A=
 =0A=
You=92re saying that ASE raw devices don=92t require the =91raw=92 command?=
  I was under the impression that they still do.=0A=
=0A=
 =0A=
Mark=0A=
 =0A=
Mark Mumy=0A=
Director=2C Solution Architecture=2C SAP Big Data GCoE=0A=
M +1 347-820-2136 | E=0A=
mark.mumy at sap.com=0A=
My Blogs:=0A=
http://scn.sap.com/people/markmumy/blog=0A=
 =0A=
https://sap.na.pgiconnect.com/I825063=0A=
Conference tel: 18663127353=2C=2C7090196396#=0A=

=0A=
=0A=
=0A=
 =0A=
=0A=
=0A=
From: Louie=2C David [mailto:David.Louie at blackrock.com]=0A=

=0A=
Sent: Wednesday=2C April 23=2C 2014 10:52
=0A=
To: Mumy=2C Mark=3B Asif Arif=3B iqug at dssolutions.com
=0A=
Subject: RE: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
=0A=
 =0A=
Mark=2C=0A=
 =0A=
So this will always be a feature going forward.  My Linux admins would love=
 not have to do this so we can manage out ASE and IQ SAN devices in one sta=
ndard way.=0A=
 =0A=
Would a feature enhancement request not be considered?=0A=
 =0A=
Thanks=0A=
David=0A=
 =0A=
 =0A=
=0A=
=0A=
From: Mumy=2C Mark [mailto:mark.mumy at sap.com]=0A=

=0A=
Sent: Wednesday=2C April 23=2C 2014 11:46 AM=0A=

=0A=
To: Louie=2C David=3B Asif Arif=3B iqug at dssolutions.com
=0A=
Subject: RE: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
=0A=
 =0A=
Yes=2C no changes are made to that.  We use the raw interface on Linux call=
ed RAW_GETBIND to access the raw devices.  That is exposed through the use =
of the =91raw=92 command.  This=0A=
 can be run manually after startup=2C or can be scripted via UDEV rules so =
that it is done once and never touched again.=0A=
=0A=
 =0A=
Mark=0A=
 =0A=
Mark Mumy=0A=
Director=2C Solution Architecture=2C SAP Big Data GCoE=0A=
M +1 347-820-2136 | E=0A=
mark.mumy at sap.com=0A=
My Blogs:=0A=
http://scn.sap.com/people/markmumy/blog=0A=
 =0A=
https://sap.na.pgiconnect.com/I825063=0A=
Conference tel: 18663127353=2C=2C7090196396#=0A=

=0A=
=0A=
=0A=
 =0A=
=0A=
=0A=
From: Louie=2C David [mailto:David.Louie at blackrock.com]=0A=

=0A=
Sent: Wednesday=2C April 23=2C 2014 10:11
=0A=
To: Asif Arif=3B Mumy=2C Mark=3B iqug at dssolutions.com
=0A=
Subject: RE: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
=0A=
 =0A=
Hi Asif=2C  Yes this is exactly what we do.  We are just wondering if we wi=
ll still need to do this in IQ 16.0.   Thanks -David=0A=
 =0A=
=0A=
=0A=
From: Asif Arif [mailto:asif.arif at sybaseproducts.com]=0A=

=0A=
Sent: Wednesday=2C April 23=2C 2014 10:30 AM
=0A=
To: Louie=2C David=3B 'Mumy=2C Mark'=3B iqug at dssolutions.com
=0A=
Subject: RE: [IQUG] IQ 16.0 raw devices on Linux=0A=
=0A=
=0A=
 =0A=
Hi David=2C=0A=
=0A=
 =0A=


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