We recently acquired a new IBM System Storage Storwize V7000. This would extend the storage capacity offered by the DS4700 Storage systems. Surprisingly, the new storage integration with our platform was not "transparent."
Before:
AIX 6.1-02-02
VIOS 2.2.0.10-FP-24
DS4700
MPIO 6.1.6.4
Basically we could not use both storages simultaneously. So we had to make a version leveling in our environment:
After:
LPAR minimum OS version
# oselvel -s
6100-03-02
Minimum driver version SDDPCM
# lslpp -L | grep sddpcm
2.6.1.0 CF IBM devices.sddpcm.61.rte SDD PCM for AIX V61
Required: IBM MPIO FCP Disk Device
# lslpp -L devices.fcp.disk.ibm.mpio.rte
Level State Type fileset Description (Uninstaller)
-------------------------------------------------- --------------------------
devices.fcp.disk.ibm.mpio.rte
1.0.0.21 C F IBM MPIO FCP Disk Device
Required: IBM MPIO SAS Disk Device
# lslpp -L devices.sas.disk.ibm.mpio.rte
Level State Type fileset Description (Uninstaller)
-------------------------------------------------- --------------------------
devices.sas.disk.ibm.mpio.rte
1.0.0.0 C F IBM SAS MPIO Disk Device
MPIO already installed:
# lslpp -L devices.common.IBM.mpio.rte
Level State Type fileset Description (Uninstaller)
-------------------------------------------------- --------------------------
devices.common.IBM.mpio.rte
6.1.6.4 MPIO Disk Path Control AF Module
VIOS version recommended (not minimum: see readme):
$ ioslevel
2.2.0.10-FP-24
V7000 firmware Level:
6.2.0.1
For further information, access the sddpcm.readme.2.6.1.0.txt
Get the right dirver here
Tips:
Worked with this AIX particular version: 6100-06-04-1112. See roadmap from IBM Fix Central
When you start using sddpcm, it's necessary to read the manual SDD_X.X.X_User_Guide_English_version.pdf.
See Biblioteca U&S
sddpcm_get_config -Av command only available from version 2.6.0.4.
pcmpath query device offers similar results for mpio_get_config -Av