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RE: RAID chunk size configuration from kickstart



Just curious, why do you need an 8M chunk size? What sort of devices are you writing to?
-C

Well the box is normal dell C2100 box with (LSI MegaRAID SAS 9260-8i w/ 512 MB cache 12x 450GB, 15K SAS). I am playing with different RAID configuration to see what numbers I get for pure block I/O performance.
But looks like I will have to get this done in %post section.

Just wondering though why does not kickstart allow setting chunk size directly if underlying utilities support this parameter ?

-Jay

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Subject:
Re: RHEL 6 Anaconda Error - AttributeError
From:
Chris Lumens <clumens redhat com>
Date:
Tue, 21 Dec 2010 09:15:19 -0800
To:
"kickstart-list redhat com" <kickstart-list redhat com>

To:
"kickstart-list redhat com" <kickstart-list redhat com>



Here's a link to the anaconda-tb-* ...

http://www.aqr.aero/files/anaconda-tb-tTx5Tj

Hm, that wasn't very enlightening.  This is one of those bugs where a
lot of people should be hitting it, but this is the first I have heard
of it.  Can you think of anything unusual you did during install?  Did
you run media check?  Is it at all reproducible?

- Chris



------------------------------------------------------------------------

Subject:
RE: RAID chunk size configuration from kickstart
From:
Jay Naikwadi <jnaikwadi asterdata com>
Date:
Tue, 21 Dec 2010 11:47:37 -0800
To:
"kickstart-list redhat com" <kickstart-list redhat com>

To:
"kickstart-list redhat com" <kickstart-list redhat com>



Well in my case the nodes did have exact same config so that is not issue.
But if kickstart command itself supported additional parameters it would have been lot simpler to specify chunk size. As in other cases we need to worry about different devices names(sd*/cciss*) etc and do all of this stuff in %post section to set the chunk size.

But just to confirm , so there is no way this can be done using kickstart 'raid' command and has to be done using tools like mdadm in %pre / %post sections ?

Thanks,
Jay

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Subject:
RE: RAID chunk size configuration from kickstart
From:
"Kovacs, Corey J." <cjk techma com>
Date:
Fri, 17 Dec 2010 23:04:28 -0800
To:
Discussion list about Kickstart <kickstart-list redhat com>

To:
Discussion list about Kickstart <kickstart-list redhat com>








As far as I know, not for the root fs which "normally" shouldn't be a problem since setting the chunk size is a performance tuning task and you typically don't do high load tasks against your root fs (Well I don't anyway). So, I'd suggest simply building a small root fs using the normal kick start methods, then elsewhere in your post section, manually create the raid device and file-system where you need to set the chunk size. Also, this is sort of predicated by all of your nodes are exactly the same and have exactly the same (or very similar) workload. -C
------------------------------------------------------------------------
*From:* kickstart-list-bounces redhat com [kickstart-list-bounces redhat com] on behalf of Jay Naikwadi [jnaikwadi asterdata com] *Sent:* Wednesday, December 15, 2010 2:10 PM *To:* kickstart-list redhat com *Subject:* Re: RAID chunk size configuration from kickstart
Jay Naikwadi wrote:
Hi , I am trying to deploy software raid setup using kickstart and was wondering if I can specify chunk-size as parameter in kickstart file.I am using RHEL 6. I didn't see any documentation for this parameter in kickstart. The default installation seems to be using 512K as chunk size whereas I would like to set it to 8MB . This is new device configuration and there is nothing configured on system before this. If kickstart does not allow setting this parameter , Is there another way in %pre , %post sections where we can change it ? How else this parameter could be set for '/' , '/boot/' partitions on clean install ? Thanks and regards, Jay
Any suggestions about how this could be done ? -Jay




------------------------------------------------------------------------

Subject:
RE: RAID chunk size configuration from kickstart
From:
"Kovacs, Corey J." <cjk techma com>
Date:
Tue, 21 Dec 2010 12:16:02 -0800
To:
Discussion list about Kickstart <kickstart-list redhat com>

To:
Discussion list about Kickstart <kickstart-list redhat com>



Just curious, why do you need an 8M chunk size? What sort of devices are you writing to?

-C
________________________________________
From: kickstart-list-bounces redhat com [kickstart-list-bounces redhat com] on behalf of Jay Naikwadi [jnaikwadi asterdata com]
Sent: Tuesday, December 21, 2010 2:47 PM
To: kickstart-list redhat com
Subject: RE: RAID chunk size configuration from kickstart

Well in my case the nodes did have exact same config so that is not issue.
But if kickstart command itself supported additional parameters it would
have been lot simpler to specify chunk size. As in other cases we need
to worry about different devices names(sd*/cciss*) etc and do all of
this stuff in %post section to set the chunk size.

But just to confirm , so there is no way this can be done using
kickstart 'raid' command and has to be done using tools like mdadm in
%pre / %post sections ?

Thanks,
Jay

kickstart-list-request redhat com wrote:
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      kickstart-list redhat com

To subscribe or unsubscribe via the World Wide Web, visit
      https://www.redhat.com/mailman/listinfo/kickstart-list
or, via email, send a message with subject or body 'help' to
      kickstart-list-request redhat com

You can reach the person managing the list at
      kickstart-list-owner redhat com

When replying, please edit your Subject line so it is more specific
than "Re: Contents of Kickstart-list digest..."

------------------------------------------------------------------------

Subject:
RE: RAID chunk size configuration from kickstart
From:
"Kovacs, Corey J." <cjk techma com>
Date:
Fri, 17 Dec 2010 23:04:28 -0800
To:
Discussion list about Kickstart <kickstart-list redhat com>

To:
Discussion list about Kickstart <kickstart-list redhat com>








As far as I know, not for the root fs which "normally" shouldn't be a
problem since setting the chunk size is a performance tuning task and
you typically don't do high load tasks against your root fs (Well I
don't anyway). So, I'd suggest simply building a small root fs using
the normal kick start methods, then elsewhere in your post section,
manually create the raid device and file-system where you need to set
the chunk size. Also, this is sort of predicated by all of your nodes
are exactly the same and have exactly the same (or very similar)
workload. -C
------------------------------------------------------------------------
*From:* kickstart-list-bounces redhat com
[kickstart-list-bounces redhat com] on behalf of Jay Naikwadi
[jnaikwadi asterdata com] *Sent:* Wednesday, December 15, 2010 2:10 PM
*To:* kickstart-list redhat com *Subject:* Re: RAID chunk size
configuration from kickstart
Jay Naikwadi wrote:
Hi , I am trying to deploy software raid setup using  kickstart and
was wondering if I can specify chunk-size as parameter in kickstart
file.I am using RHEL 6.  I didn't see any documentation for this
parameter in kickstart. The default installation seems to be using
512K as chunk size whereas I would like to set it to 8MB . This is
new device configuration and there is nothing configured on system
before this. If kickstart does not allow setting this parameter ,  Is
there another way in %pre , %post sections where we can change it ?
 How else this parameter could be set for  '/' ,  '/boot/'
 partitions  on clean install ? Thanks and regards, Jay
Any suggestions about how this could be done ? -Jay



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------------------------------------------------------------------------

Subject:
RE: RHEL 6 Anaconda Error - AttributeError
From:
"Speagle, Andy" <andy speagle wichita edu>
Date:
Wed, 22 Dec 2010 08:09:57 -0800
To:
Discussion list about Kickstart <kickstart-list redhat com>

To:
Discussion list about Kickstart <kickstart-list redhat com>



Here's a link to the anaconda-tb-* ...

http://www.aqr.aero/files/anaconda-tb-tTx5Tj
Hm, that wasn't very enlightening.  This is one of those bugs where a lot
of people should be hitting it, but this is the first I have heard of it.
Can you think of anything unusual you did during install?  Did you run
media check?  Is it at all reproducible?

Well, keep in mind this is a kickstart generated via Spacewalk v1.2 ... I cloned the majority of it from a RHEL 5 kickstart.  I'm not certain if there are new directives I need to be considering.  Here's the relevant generated kickstart...  Perhaps there's something you can readily identify.

# Kickstart config file generated by Spacewalk Config Management
# Profile Label : rhel-x86_64-server-6-0
# Date Created  : 2010-11-29 21:27:30.0

install
text
network --device=eth0 --bootproto=dhcp --noipv6
url --url http://spacewalk.wichita.edu/ks/dist/rhel-x86_64-server-6-0
lang en_US
keyboard us
zerombr yes
clearpart --all --drives=sda --initlabel
bootloader --location mbr --driveorder=sda --append="rhgb quiet"
timezone --utc America/Chicago
auth --enablemd5 --enableshadow
rootpw --iscrypted <nunya>
selinux --disabled
reboot
firewall --enabled --port=22:tcp
skipx
firstboot --disabled
part /boot --fstype ext4 --size=200 --ondisk=sda
part pv.6 --size=100 --grow --ondisk=sda
volgroup rootvg --pesize=32768 pv.6
logvol swap --fstype=swap --name=swap --vgname=rootvg --size=2048
logvol /var --fstype=ext4 --name=var --vgname=rootvg --size=2048
logvol /var/tmp --fstype=ext4 --name=vartmp --vgname=rootvg --size=1024
logvol /home --fstype=ext4 --name=home --vgname=rootvg --size=2048
logvol /tmp --fstype=ext4 --name=tmp --vgname=rootvg --size=1024
logvol /opt --fstype=ext4 --name=opt --vgname=rootvg --size=2048
logvol / --fstype=ext4 --name=root --vgname=rootvg --size=4096

%packages @core
@base
@java
lvm2
gcc
gcc-c++
net-snmp
sysstat
strace
ntp
screen
compat-libstdc++-33
-NetworkManager*
-bluez*
-yum-updatesd
%end


Thanks,

Andy




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