[Linux-ia64] Greater than 2TB Filesystem support?

[Linux-ia64] Greater than 2TB Filesystem support?

[Eastham, M. Thomas (Anitel Technologies)]

Is there anyone out there that can give me an indication of when the 2TB FS
limitation will be addressed?  We are ready to implement XFS based IDE Raid
IA64 servers with 4+TB today.  Any information you can provide me about
timelines would be very helpful.

Regards,
Thomas Eastham

-----Original Message-----
From: Keith Owens [mailto:kaos@sgi.com]
Sent: Wednesday, September 11, 2002 12:51 AM
To: Steven Cole
Cc: linux-ia64@linuxia64.org
Subject: Re: [Linux-ia64] [trivial] Request for merging of two sets of
redundant SGI IA64Configure.help texts


Steven Cole <elenstev@mesatop.com> wrote:
>Could one of you help resolve the following very trivial problem.  In
>2.4.20-pre5 Documentation/Configure.help, there exists two
>Configure.help entries for CONFIG_IA64_SGI_SN_SIM and
>CONFIG_IA64_SGI_SN_DEBUG.
>
>The configurators will of course only display the first of the two.
>Would someone please indicate which of the texts is the more accurate or
>combine them as you see fit.  You can send me the results or make up a
>patch yourself.
>
>If this is a moot point, deleting the second text would be the default
>thing to do.

The first set is wrong.  There is also an error in ia64/config.in for
one of these variables.  Patch against 2.4.19.

--- Documentation/Configure.help.orig	Wed Sep 11 15:44:36 2002
+++ Documentation/Configure.help	Wed Sep 11 15:45:24 2002
@@ -24409,16 +24409,6 @@
 
   If you don't know what to do, choose "generic".
 
-CONFIG_IA64_SGI_SN_SIM
-  Build a kernel that runs on both the SGI simulator AND on hardware.
-  There is a very slight performance penalty on hardware for including this
-  option.
-
-CONFIG_IA64_SGI_SN_DEBUG
-  This enables addition debug code that helps isolate
-  platform/kernel bugs. There is a small but measurable performance
-  degradation when this option is enabled.
-
 # Choice: pagesize
 Kernel page size
 CONFIG_IA64_PAGE_SIZE_4KB
--- arch/ia64/config.in.orig	Wed Sep 11 15:45:29 2002
+++ arch/ia64/config.in	Wed Sep 11 15:49:01 2002
@@ -75,7 +75,7 @@
 
 if [ "$CONFIG_IA64_SGI_SN1" = "y" ] || [ "$CONFIG_IA64_SGI_SN2" = "y" ];
then
 	define_bool CONFIG_IA64_SGI_SN y
-	bool '  Enable extra debugging code' CONFIG_IA64_SGI_SN_DEBUG n
+	bool '  Enable extra debugging code' CONFIG_IA64_SGI_SN_DEBUG
 	bool '  Enable SGI Medusa Simulator Support' CONFIG_IA64_SGI_SN_SIM
 	bool '  Enable autotest (llsc). Option to run cache test instead of
booting' \
 			CONFIG_IA64_SGI_AUTOTEST n


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Re: [Linux-ia64] Greater than 2TB Filesystem support?

[David Mosberger]

>>>>> On Wed, 11 Sep 2002 09:18:00 -0500, "Eastham, M. Thomas (Anitel Technologies)" <EasthaMT@bp.com> said:

  Thomas> Is there anyone out there that can give me an indication of
  Thomas> when the 2TB FS limitation will be addressed?  We are ready
  Thomas> to implement XFS based IDE Raid IA64 servers with 4+TB
  Thomas> today.  Any information you can provide me about timelines
  Thomas> would be very helpful.

Peter Chubb from the University of New South Wales has done some very
nice work in this regard as part of the Gelato project.  He has a web
page and patches for the 2.5 kernel series at:

	http://www.gelato.unsw.edu.au/~peterc/lfs.html

I fully expect this to be part of 2.6.  I'm not sure whether anybody
has tried to back-port it to 2.4.

	--david

Re: [Linux-ia64] Greater than 2TB Filesystem support?

[Peter Chubb]

>>>>> "David" = David Mosberger <davidm@napali.hpl.hp.com> writes:

>>>>> On Wed, 11 Sep 2002 09:18:00 -0500, "Eastham, M. Thomas (Anitel Technologies)" <EasthaMT@bp.com> said:
Thomas> Is there anyone out there that can give me an indication of
Thomas> when the 2TB FS limitation will be addressed?  We are ready to
Thomas> implement XFS based IDE Raid IA64 servers with 4+TB today.
Thomas> Any information you can provide me about timelines would be
Thomas> very helpful.

David> Peter Chubb from the University of New South Wales has done
David> some very nice work in this regard as part of the Gelato
David> project.  He has a web page and patches for the 2.5 kernel
David> series at:

David> 	http://www.gelato.unsw.edu.au/~peterc/lfs.html

I'm working on a backport to 2.4; also I haven't recently updated the
2.5 IA64 port --- if you want it I can do it today and test tomorrow.

Which kernel are you interested in?

--
Dr Peter Chubb				    peterc@gelato.unsw.edu.au
You are lost in a maze of BitKeeper repositories, all almost the same.

RE: [Linux-ia64] Greater than 2TB Filesystem support?

[Eastham, M. Thomas (Anitel Technologies)]

Peter,
	I would be forever in you debt if you could patch 2.4.19  I can test
up to 2.5TB immediately using SGI's XFS.  This would actually be two
hardware RAID 0 arrays of 1260GB each software raid'ed together.  Our test
platform today is i386 but we hope to move to IA64 if the testing shows
promise.  If this works I hope to be able to test a 7.6TB i386 NAS box
within a few weeks.
	I'll be sure to share results with the list.

Regards,
Thomas



-----Original Message-----
From: Peter Chubb [mailto:peter@chubb.wattle.id.au]
Sent: Wednesday, September 11, 2002 7:41 PM
To: davidm@hpl.hp.com
Cc: Eastham, M. Thomas (Anitel Technologies); linux-ia64@linuxia64.org
Subject: Re: [Linux-ia64] Greater than 2TB Filesystem support?


>>>>> "David" = David Mosberger <davidm@napali.hpl.hp.com> writes:

>>>>> On Wed, 11 Sep 2002 09:18:00 -0500, "Eastham, M. Thomas (Anitel
Technologies)" <EasthaMT@bp.com> said:
Thomas> Is there anyone out there that can give me an indication of
Thomas> when the 2TB FS limitation will be addressed?  We are ready to
Thomas> implement XFS based IDE Raid IA64 servers with 4+TB today.
Thomas> Any information you can provide me about timelines would be
Thomas> very helpful.

David> Peter Chubb from the University of New South Wales has done
David> some very nice work in this regard as part of the Gelato
David> project.  He has a web page and patches for the 2.5 kernel
David> series at:

David> 	http://www.gelato.unsw.edu.au/~peterc/lfs.html

I'm working on a backport to 2.4; also I haven't recently updated the
2.5 IA64 port --- if you want it I can do it today and test tomorrow.

Which kernel are you interested in?

--
Dr Peter Chubb				    peterc@gelato.unsw.edu.au
You are lost in a maze of BitKeeper repositories, all almost the same.