Originally posted by: SystemAdmin

Hi,

I'm new to AIX,i found that the DISK/LVM Commands in AIX are:
a) mkdev
b) mkvg
c) mklv

But while preparing a physical disk for LVM,i get following message:

1. mkdev -c disk -l hdisk1

mkdev: 0514-517 The information provided to this configuration command
was not adequate to uniquely identify the device.
Provide more device information than the following:
class = 'disk'

How should i proceed furhter.

Thanks.

Originally posted by: steevojb

Hi There,

I have never needed to use mkdev.

I suggest your start here,

http://www.redbooks.ibm.com/abstracts/sg245433.html?Open

HTH

Steve

Originally posted by: nh4aix

Use SMIT first... let it help you build the command... "smitty lvm" will take you to the LVM screens... choose disks and then make or create a disk...

F6 will show you the command your are building or built. $HOME/smit.script will show you the command you ran...

It is a much better way than fighting with the command syntax...

Good luck,
Joe

Originally posted by: SystemAdmin

Thanks Joe,

I wanted to come out with some shell scripts for doing such adminstration,which i think should now be tried with "Expect".

Originally posted by: SystemAdmin

Thanks for the pointer steve.

Originally posted by: orphy

You typically don't need to use mkdev when dealing with LVM tasks
unless the disk is in Defined state and you want to make it Available.
Or that you need to do some troubleshooting. Or that you want to rename it,
say, to a more meaningful name. I used to use rmdev/mkdev to rename disks
in HACMP clusters.

That said, if you are trying to make a LV or FS, the hdisk should already
be there and if you just happened to have added a hot-plug disk, all you
need is run a "cfgmgr" and "lsdev -Clhdisk1" should show it as Available.

After having hdiskX, you can, as Joe suggested, use SMIT to create the LV/FS.
Try "smitty mklv" & "smitty crfs". After than you can simply "mount /xyz".
If hdisk1 is not part of a VG yet, you need to do "smitty mkvg" first.

So,

cfgmgr
smitty mkvg
smitty mklv
smitty crfs
smitty mount

I tend to manage AIX disk/LVM from the CLI but SMIT is a good learning tool.
I normally don't use Expect to cut the LV/FS. And if I have to create a
bunch of them, I'll just do a simple ksh script for it...
Orphy! :-)