Upgrading from native MPIO to SDDPCM AIX 6.1

UNIX AIX
1

We have AIX 6.1 system attached to SAN disks (DS4700 and DS8100) thru SVC.

Initially when the system was I forgot to install sddpcm drivers. and wanted to know how can i go with the installation of the sddpcm drivers.

My understandin going thru the manual
http://publib.boulder.ibm.com/infocenter/tssfsv21/v1r0m0/topic/com.ibm.sanfs222.doc/f2bsdu03.pdf

is

  1. Unmount all the FS related to the VG.
  2. varyoff VG
  3. Export VG
  4. rmdev -Rdl hdiskxx
  5. install sddpcm drivers
  6. import vg

Does this look correct.

$ lsdev -Cc disk
hdisk0 Available 00-08-00 SAS Disk Drive
hdisk1 Available 00-08-00 SAS Disk Drive
hdisk2 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk3 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk4 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk5 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk6 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk7 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk8 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk9 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk10 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk11 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk12 Available 05-00-02 MPIO IBM 2145 FC Disk
hdisk13 Available 05-00-02 MPIO IBM 2145 FC Disk

$ lslpp -l | grep devices.fcp.*
devices.fcp.disk.array.diag
devices.fcp.disk.array.rte
devices.fcp.disk.rte 6.1.4.6 COMMITTED FC SCSI CD-ROM, Disk,
devices.fcp.tape.rte 6.1.4.2 COMMITTED FC SCSI Tape Device Software
devices.fcp.disk.array.rte
devices.fcp.disk.rte 6.1.4.6 COMMITTED FC SCSI CD-ROM, Disk,
devices.fcp.tape.rte 6.1.4.2 COMMITTED FC SCSI Tape Device Software

I did look at the sddpcm manual
http://publib.boulder.ibm.com/infocenter/tssfsv21/v1r0m0/topic/com.ibm.sanfs222.doc/f2bsdu03.pdf
and I think this is what I need to kn

2

Try these command and paste the output:
# datapath query adapter
# datapath query device

Regards
Manoj

3

These commands are not available, since sdd drivers are not installed. These commands are only available if sdd or sddpcm drivers are installed.

4

I went through this a while ago, if I remember correctly you can just install sddpcm and then reboot. The above commands you have posted are if you are upgrading sddpcm to another OS release - if you have a test lpar you could try it?

If not it won't hurt to do the above method, this is what I have done recently after upgrading from AIX 6.1 to 7.1 - I didn't do step 6 though, it's just easier to reboot :slight_smile:

Don't forget to install the host attachment fileset for your relevent storage as well, the disks will look like this after (this is DS8000)

hdisk2 Available 09-08-02 IBM MPIO FC 2107
hdisk3 Available 09-08-02 IBM MPIO FC 2107
hdisk4 Available 09-08-02 IBM MPIO FC 2107
hdisk5 Available 09-08-02 IBM MPIO FC 2107
hdisk6 Available 09-08-02 IBM MPIO FC 2107
hdisk7 Available 09-08-02 IBM MPIO FC 2107

When all done you should be able to run the pcmpath query adapter command