A 'first look' at creating an AIX 5.2 WPAR on AIX 7.
cggibbo 270000TMUJ Visits (14508)
I created my first ‘versioned’ AIX 5.2 WPAR on AIX 7 today. To get me started, I followed the steps in the following guide from the AIX 7 Open Beta On-line Information Centre:
In order to create the WPAR, I needed an AIX 5.2 mksysb file to supply to the mkwpar command.
Fortunately, I just happened to have an old AIX 5.2 mksysb image in my archives!
I then executed the following command to build the WPAR:
# mkwpar -n wpar1 -C -B /hom
The flags to the command are:
Specifies the name for the workload partition to be created. You must specify a name, either using the -n flag or in a specification file using the -f flag, unless the -p name or both –w and -o flags are used.
Specifies a device containing a workload partition backup image. This image is used to populate the workload partition file systems. The wparBackupDevice parameter is a workload partition image that is created with the savewpar, mkcd, or mkdvd command. The -B flag is used by the restwpar command as part of the process of creating a workload partition from a backup image.
Creates a versioned workload partition. This option is valid only when additional versioned workload partition software has been installed.
I was then able to start my new AIX 5.2 WPAR successfully!
# startwpar -v wpar1
Starting workload partition wpar1.
Mounting all workload partition file systems.
Loading workload partition.
Exporting workload partition devices.
Exporting workload partition kernel extensions.
Starting workload partition subsystem cor_wpar1.
0513-059 The cor_wpar1 Subsystem has been started. Subsystem PID is 8388822.
Verifying workload partition startup.
Return Status = SUCCESS.
The WPAR was now in an active state and the associated file systems were mounted (as shown from the Global environment).
Name State Type Hostname Directory RootVG WPAR
wpar1 A S wpar1 /wpars/wpar1 no
# mount | grep wpar
/dev/lv00 /wpars/wpar1 jfs Jul 26 20:13 rw,log=/dev/loglv00
/dev/lv01 /wpars/wpar1/home jfs Jul 26 20:13 rw,log=/dev/loglv00
/dev/lv02 /wpars/wpar1/mksysb jfs Jul 26 20:13 rw,log=/dev/loglv00
/dev/lv03 /wpars/wpar1/opt jfs Jul 26 20:13 rw,log=/dev/loglv00
/proc /wpars/wpar1/proc namefs Jul 26 20:13 rw
/dev/lv04 /wpars/wpar1/tmp jfs Jul 26 20:13 rw,log=/dev/loglv00
/dev/lv05 /wpars/wpar1/usr jfs Jul 26 20:13 rw,log=/dev/loglv00
/dev/lv07 /wpars/wpar1/var jfs Jul 26 20:13 rw,log=/dev/loglv00
I was curious what the WPAR environment was going to look like, so I used clogin to access it and run a few commands.
From the Global environment I confirmed I was indeed on an AIX 7 system.
# uname -W
From within the WPAR, I confirmed that I was indeed running AIX 5.2! Wow!
# clogin wpar1
wpar1 : / # oslevel
And I could see all 8 logical CPUs (4 hardware threads per POWER7 processor i.e. SMT-4).
wpar1 : / # sar -P ALL 1 5
AIX wpar1 2 5 00F602734C00 07/26/10
wpar1 configuration: @lcpu=8 @mem=4096MB @ent=0.50
20:22:20 cpu %usr %sys %wio %idle physc %entc
20:22:21 0 7 78 1 14 0.01 0.0
1 1 70 0 29 0.01 0.0
2 0 1 0 99 0.00 0.0
3 0 0 0 100 0.01 0.0
4 0 35 0 65 0.00 0.0
7 0 28 0 72 0.00 0.0
U - - 0 93 0.47 93.9
- 0 3 0 97 0.03 0.0
I noticed an interesting device in the lscfg output.
wpar1 : / # lscfg
INSTALLED RESOURCE LIST
The following resources are installed on the machine.
+/- = Added or deleted from Resource List.
* = Diagnostic support not available.
Model Architecture: chrp
Model Implementation: Multiple Processor, PCI bus
+ sys0 System Object
* wio0 WPAR I/O Subsystem
Also noticed some new and interesting mount points, for example /nre/opt.
wpar1 : / # df
Filesystem 512-blocks Free %Used Iused %Iused Mounted on
Global 131072 99928 24% 1424 5% /
Global 131072 126704 4% 70 1% /home
Global 1048576 1015560 4% 17 1% /mksysb
Global 786432 428904 46% 7331 14% /nre/opt
Global 458752 88400 81% 10020 47% /nre/sbin
Global 4980736 24872 100% 53698 87% /nre/usr
Global 131072 63800 52% 1640 11% /opt
Global 131072 125080 5% 52 1% /tmp
Global 1572864 165744 90% 23183 12% /usr
Global 524288 494464 6% 154 1% /usr/local
Global 262144 253744 4% 28 1% /var/log
Global 131072 126832 4% 20 1% /var/tsm/log
I did have one minor problem when I first tried to start my WPAR, but that issue was quickly resolved by the AIX developers on the AIX 7 Open Beta Forum.
Such a fast response to my query demonstrates IBMs commitment to the Open Beta program.
I was notified this morning that I’ve been selected to work on an upcoming AIX Redbook in Austin, Texas. I’m really looking forward to it.
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