Hello,
The major problem is the missing documentation on how to use the local disks on
a stateless (diskless) installation. Tricks are being deployed instead.
Trying to mimic the steps of a statelite installation is not sufficient to make
it work on stateless deployments.
V.
> On 28 Nov 2017, at 00:15, Yuan Y Bai <by...@cn.ibm.com> wrote:
>
> That is correct, diskless and statelite both support local disk for different
> purposes now.
>
> Best Regards
> --------------------------------------------------
> Yuan Bai (白媛)
>
> CSTL HPC System Management Development
> Tel:86-10-82451401
> E-mail: by...@cn.ibm.com
> Address: IBM ZGC Campus. Ring Building 28,
> ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian District,
> Beijing P.R.China 100193
>
> IBM环宇大厦
> 北京市海淀区东北旺西路8号，中关村软件园28号楼
> 邮编:100193
>
>
> ----- 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.
>
> Here’s the documentation:
> https://sourceforge.net/p/xcat/wiki/XCAT_Overview,_Architecture,_and_Planning/#xcat-cluster-node-types
>
> <https://urldefense.proofpoint.com/v2/url?u=https-3A__sourceforge.net_p_xcat_wiki_XCAT-5FOverview-2C-5FArchitecture-2C-5Fand-5FPlanning_-23xcat-2Dcluster-2Dnode-2Dtypes&d=DwMFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=uiTcPxjMR44SPRNNb6l_nA&m=oAQVc_Sh4trqtOHvVelQBzsfz8vF7IL0CwQcnYf1Nbs&s=fH1AxDWPRLVZLj9RfODpdKPJOENCWrDCRvH0_M8TsjA&e=>
>
> Thanks,
> V.
>
> Sent from my iPhone
>
> On 27 Nov 2017, at 12:50, Russ Auld <russa...@comcast.net
> <mailto: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
>> <mailto: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!
>>
>>
>>
>>
>> Gilad Berman
>> HPC Architect
>> Lenovo EMEA
>>
>> +972-52-2554262
>> gber...@lenovo.com <mailto:gber...@lenovo.com>
>>
>>
>> Lenovo.com
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>>
>>
>>
>> From: Vinícius Ferrão [mailto:fer...@versatushpc.com.br
>> <mailto:fer...@versatushpc.com.br>]
>> Sent: Wednesday, November 22, 2017 4:09 AM
>> To: xcat-user@lists.sourceforge.net <mailto: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:
>>
>> http://xcat-docs.readthedocs.io/en/stable/advanced/hierarchy/provision/diskless_sn.html
>>
>> <https://urldefense.proofpoint.com/v2/url?u=http-3A__xcat-2Ddocs.readthedocs.io_en_stable_advanced_hierarchy_provision_diskless-5Fsn.html&d=DwMFaQ&c=jf_iaSHvJObTbx-siA1ZOg&r=uiTcPxjMR44SPRNNb6l_nA&m=oAQVc_Sh4trqtOHvVelQBzsfz8vF7IL0CwQcnYf1Nbs&s=Gx5Rpj3rHwRYRV3sDlD3Gw5m4HChY86jM8rPWsui31M&e=>
>>
>> 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=compute
>> 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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