Re: [xcat-user] Local scratch for stateless compute nodes

Mon, 27 Nov 2017 18:16:10 -0800

That is correct, diskless and statelite both support local disk for different purposes now.
 
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----- Original message -----
From: Vinícius Ferrão <fer...@versatushpc.com.br>
To: xCAT Users Mailing list <xcat-user@lists.sourceforge.net>
Cc:
Subject: Re: [xcat-user] Local scratch for stateless compute nodes
Date: Tue, Nov 28, 2017 12:14 AM
 
 
Hello,
 
Accordingly to the documentation they are different on a specific way:
 
. Stateless: nodes boot from a RAMdisk OS image downloaded from the xCAT mgmt node or service node at boot time.
 
. Statelite: nodes boot from an NFS-root diskless OS image.
 
And both support local disk for different purposes, what we are targeting are local disks just for scratch and swap. They will not handle any state, and this is perfectly supported as said on the documentation.
 
 
Thanks,
V.
 
Sent from my iPhone

On 27 Nov 2017, at 12:50, Russ Auld <russa...@comcast.net> wrote:
 
If you're using netboot and local disk,  then isn't that "statelite"?
Do the satellite instructions not work? 
 
On Nov 27, 2017 9:26 AM, Gilad Berman <gber...@lenovo.com> wrote:

All,

 

I would like to join this question –

Does even localdisk works with stateless? From the docs it seems that should be supported (because it is under stateless), however –

-         the instructions are taken from statelite and refer to statelite code (litefile)

-         The rc.localdisk code is under statelite

-         In the linuximage man – “Partitionfile - Only available for diskful osimages and statelite osimages(localdisk enabled)“

 

A very quick trial on my statless nodes results in nothing J, it seems there is simply no reference to localdisk with stateless.

 

So, can someone please help clarify it?

 

** as always, there is a chance I missed something very basic and it should be working J

 

THX in advance!

 

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Lenovo EMEA

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From: Vinícius Ferrão [mailto:fer...@versatushpc.com.br]
Sent: Wednesday, November 22, 2017 4:09 AM
To: xcat-user@lists.sourceforge.net
Subject: [xcat-user] Local scratch for stateless compute nodes

 

Hello,

 

I would like to enable swap and local /tmp on my stateless nodes, but after following the documentation on the following link nothing appears to work:

 

I’m aware that the documentation is for service nodes and not for compute nodes, but I was thinking the procedure would be similar.

 

At this point I’m with this settings on osimage:

[root@headnode xcat]# lsdef -t osimage centos7.4-x86_64-netboot-compute
    exlist=/opt/xcat/share/xcat/netboot/centos/compute.centos7.exlist
    imagetype=linux
    osarch=x86_64
    osdistroname=centos7.4-x86_64
    osname=Linux
    osvers=centos7.4
    otherpkgdir=/install/post/otherpkgs/centos7.4/x86_64

****    partitionfile=/install/custom/netboot/centos7.4-x86_64-netboot-compute/partitionfile

    permission=755
    pkgdir=/install/centos7.4/x86_64
    pkglist=/opt/xcat/share/xcat/netboot/centos/compute.centos7.pkglist
    postinstall=/opt/xcat/share/xcat/netboot/centos/compute.centos7.postinstall
    profile="">    provmethod=netboot
    rootimgdir=/install/netboot/centos7.4/x86_64/compute
    synclists=/install/custom/netboot/compute.synclist

 

And the content of the partition file is the following:

cat /install/custom/netboot/centos7.4-x86_64-netboot-compute/partitionfile
enable=yes
enablepart=yes

[disk]
dev=/dev/sda
clear=yes
parts=10,90

[swapspace]
dev=/dev/sda1

[localspace]
dev=/dev/sda2
fstype=xfs

 

Finally the following commands were executed:

chtab priority=7.1 policy.commands=getpartition policy.rule=allow

chtab litefile.image=centos7.4-x86_64-netboot-compute litefile.file=/var/log/ litefile.options=localdisk

chtab litefile.image=centos7.4-x86_64-netboot-compute litefile.file=/tmp/ litefile.options=localdisk

 

After a new genimage/packimage the local scratch does not appears to be made nor working.

 

Someone knows what to do next?

 

Thanks,

V.

 

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