[mihha]

Hi people!


Here is my problem.

I have 2 defined and installed VIOS servers and 4 defined LPARs (AIX will be installed in them).

I have 1 VIOS up and running with one SEA Ethernet and 5 virtual SCSI adapters configured.

On vhost0 I have virtual CD drive defined (mkvdev -vdev cd0 -vadapter vhost0 -dev vcd).

One LPAR with AIX is up and running. It has CD drive access through vcd in VIOS 1.

1. I need to start VIOS 2 and boot 1 LPAR through it. How can I tell that LPAR to use CD? I can't define virtual CD with 'mkvdev' command because cd0 device is in 'Defined' state and I don't know how to put it in 'Available' state?

2. In VIOS 2 I accidently deleted cd0 and ide0 devices. How can I define them back?

3. In VIOS 1 I have connection to external storage (IBM DS4800). I have hdisk2 with reserve_policy=single_path and already I made virtual disk device with mkvdev command. One active LPAR is booted from this disk and already some applications are installed on it. I need to define the same disk in VIOS 2 but I keep getting the error that device is busy (because reserve_policy attribute set in VIOS 1). How can I change reserve_policy attribute without destroying data on physical disk?

I know that I have lot of questions but I really need to resolve those issues so I can finish this installation already.

Thank you in advance!

[ross.mather]

1. I would not share a CD drive like this - its for hdisk devices. The CD drive is probably owned by VIO one and therefore not available for VIO 2. A hardware adapter can only be owned by one LPAR at a time.

To move the CD drive around you need to enable the Dynamic LPARING and mark the CDROM adapter (usually called other mass storage device) as desired - not required, and then you can move it around as needed.

What you should do is set up a NIM server and use it to install all the other LPARS that way you don't need to keep moving the CD around.


2. cfgdev if they are still attached to the VIO, but in your config it looks like the cd drive is allocated to VIO1

3. You'll need to break tha allocation to the LPAR and then deallocte the hdisk from both VIO servers and then reallocated it (break the persistent reserve). Once its back - before you allocate the disk back to the LPAR you need to do chdev -dev hdisk2 -attr reserve_policy=no_reserve, but do it twice - the second time with -perm

You can also use this:
FRED=`lsdev -type disk | grep MPIO | awk '{print $1}'`
for i in $FRED
do
chdev -dev $i -attr reserve_policy=no_reserve pv=yes
chdev -dev $i -attr reserve_policy=no_reserve -perm
done

If you don't touch the LUN on the DS4800 the data will be fine.

[mihha]

Ross,

thank you very much for a quick reply. I will try what you suggest and let you know the result.