Having problem with a new LUN

[Darryl Baker]

I' on a 11i system attach to an EMC Clariion. I have one volume group vg_oramgd with redundent paths using pvlinks. On this LUN/vg everything worked just as expected. I was later given a second LUN off the Clariion for a second volume group. The problem is I can see the 2 LUN on 2 paths using ioscan but in the sam disk display it shows only the first LUN now with 4 paths. I was able to pvcreate, vgcreate, and lvcreate to get it working I just am pondering what is confused and what trouble I might get into later.

[A. Clay Stephenson]

Post your output of vgdisplay -v /dev/vg_oramgd. That I trust. SAM has always been a bit squirrelly with complex disk arrangements. If your vgdisplay looks okay, search for the latest SAM patches -- that might help.

[Steven E. Protter]

With Most SAN's when they present disk, a reboot is required to gain full use.

Upon presentation the disk is sometimes visible but not useable.

This is from my 11i experience. Not wide SAN experience but not negligible either.

Good luck,

Like to see the report A. Clay asked form.

SEP

[Tim D Fulford]

Hi

I've carved out luns presented them and used them no reboots.. instead ioscan -f; insf -e; ioscan -f.. this usually does the trick.

Regards

Tim

[Edgar_8]

Hi,

Do you have 4 fc HBAs and if so has the LUN been presented to all 4 fc HBAs? Aas requested, could you attach the vgdisplay output.

Regards

[Darryl Baker]

I have rebooted, many ioscan/insf... The EMC reported the drive as c7t0d0 so I tried using that. From the command line I did the pvcreate and vgcreate. From sam I was able to create the logical volumes but still in the disk view I have one SAN disk with 4 paths.

[Devender Khatana]

Hi,

Alongwith c7t0d0, there should be more device files for the same LUN because of multiple paths. Also you need to extend your VG to all these other paths for these paths to be enabled. This can be done by

#vgextend vgname /dev/dsk/cxtydz /dev/dsk/cx1ty1dz1 .. ...

Also confirm the alternate paths added using

#vgdisplay -v vgname

HTH,
Devender