topic Re: how to create a File system using LVM for disks assigned from SAN in Operating System - Linux

how to create a File system using LVM for disks assigned from SAN

senthil_kumar_1 — Fri, 13 Mar 2009 06:22:37 GMT

Hi

in my environment, we are using Emulex and qlogic HBA cards. so i need information for both the cards.

I want information for followings.

1) what command is used / how to view the device files for both Emulex and qlogic HBA cards?

2) what command is used / how to view the wwnn and wwpn for both Emulex and qlogic HBA cards?

3) what command is used / how to view the newly created SAN device.

4) How to create a logical volume using this newly created SAN device.

pls explain me step by step.

Re: how to create a File system using LVM for disks assigned from SAN

smatador — Fri, 13 Mar 2009 10:41:31 GMT

Hi,
For the second question look at the answer of Matti
http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1318321

Re: how to create a File system using LVM for disks assigned from SAN

Hemmetter — Fri, 13 Mar 2009 11:26:25 GMT

Hi,

2) this depends on the kernel you use.
you may find them
either under /proc
or under /sys/class/scsi_host/host?
or under /sys/class/fc_host/....

identify the correct one with a glance.

3) to rescan the bus in question you can change into the found /sys/class/*host/host*/ directory and then
# echo "- - - " > scan

#dmesg should show up new devices.

4) i would first create a single partition covering the whole disk with type 8e / Linux LVM".

second "pvcreate" all the new /dev/sd*

third you either "vgextend" an existing vg or "vgcreate" a new one.

then "lvcreate" a new volume.

SEE pvcreate(1), vgcreate(1), vgextend(1), lvcreate(1)

rgds
HGH

Re: how to create a File system using LVM for disks assigned from SAN

Ivan Ferreira — Fri, 13 Mar 2009 12:09:00 GMT

1 and 2) Use SanSurfer utility for Qlogic and HBA Anywhere for Emulex.

3) Please see: http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1060267

4) Please see: http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=960077