topic Re: Configuring MSA2324i whith RedHat 5 in Operating System - Linux

Configuring MSA2324i whith RedHat 5

Ialiaga U — Wed, 20 Oct 2010 23:56:45 GMT

Did anyone know how to implement an MSA 2342i with two controlers using RedHat Linux, I'm looking for any manual but I didn't find it. Can anybody help me? or advice me about any manual.

Re: Configuring MSA2324i whith RedHat 5

AnthonySN — Thu, 21 Oct 2010 12:51:09 GMT

all red hat linux documents can be found at this site.

http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/5/html/Installation_Guide/index.html

Re: Configuring MSA2324i whith RedHat 5

Alzhy — Thu, 21 Oct 2010 13:06:55 GMT

You wil need device mapper and device multipath (multipathd) enabled and configured.

Additionally, you NEED to have HP Device Mapper Multipath enablement kit. If you have RHEL up to 5.5 - you can download and install from this URL: javascript&colon;openExternal('http://bizsupport1.austin.hp.com/bizsupport/TechSupport/SoftwareDescription.jsp?lang=en&cc=us&prodTypeId=18964&prodSeriesId=3559651&prodNameId=3559652&swEnvOID=2027&swLang=13&mode=2&taskId=135&swItem=co-82195-1')

Once you download, simpply untar/unpack. and run the INSTALL program. If you are missing device-mapper multipath bits -- it will alert you.

Once installed, you will have the correct /etc/multipath.conf

Zone and present MSA LUNS to your server.

Scan your FC Hosts with FibreUtils or that echo trick on the fc hosts.

Then:

multipath -v2
multipath -ll

You should now be able to see your multipathed device in "multipath -ll" and coresponding mapper and mpath devices like:

/dev/mapper/mpathNNN
/dev/mpath/mpathNNN

either of these you can use in LVM or in Oracle ASM, etc.

If you want "friendly" persistent names like /dev/mapper/oradata001 or /dev/mapper/sapdisk01 -- just edit and add wwids in the wwid aliases section of /etc/multipath.conf and reconfig/reread multipath "multipath -v2"

Hope this helps.

Re: Configuring MSA2324i whith RedHat 5

Ialiaga U — Thu, 21 Oct 2010 18:56:07 GMT

Thnks,for the reply, but MSA 2324i, has iscsi conection, another point of advice I'm using RHEL 5.3 x64, and I have problems configuring multipath in iscsi, or maybe I'm doing something Wrong, that's why I'm looking for a manual, or a guide to show me how to do it.

Re: Configuring MSA2324i whith RedHat 5

Alzhy — Thu, 21 Oct 2010 19:02:02 GMT

Oh so sorry man...
But here are a couple of Googly good hitz which may help ya:

http://www.cyberciti.biz/tips/tag/red-hat-iscsi
http://www.cyberciti.biz/tips/rhel-centos-fedora-linux-iscsi-howto.html

iSCSI is still being detested in my enterprise even with the recent million IOPS demo by Intel.

FC and soon FCOE still reigns supreme in my hood.

Re: Configuring MSA2324i whith RedHat 5

Tim Nelson — Thu, 21 Oct 2010 19:24:53 GMT

yes. telling us that you are using iSCSI is an important detail that was left off your description.

so if I go to redhat knowledge base and type in multipath iscsi, then just like magic, a document telling how to do it shows up..

did you try this ?