Virtually converted to AIX 7
I just did my first migration of an LPAR to AIX 7.1. I chose to migrate my AIX 6.1 NIM server.
I first downloaded AIX 7.1 from the Entitled Software Support web site
I copied the two ISO images to the Virtual Media Library on the VIO server, and I broadly followed the procedure outlined by my compatriot Chris Gibson in his article AIX Migration with File-Backed VIOS Devices.
I gave the two ISO images shorter names when I copied them into /var/vio/VMLibrary. You can also rename them using the VIO server mkvopt
The fine print
All up, the migration took about 35 minutes from the SMS menus to the login prompt following the reboot. I migrated from AIX 6.1 on a virtualised LPAR (no dedicated physical adapters) and there were 555 filesets to install. Most of my time was spent speed reading copyright notices.
Given my reluctance to open data centre doors, and the fact that it's spring in Sydney so I didn't bring my winter woollies with me, I decided to do it all from the comfort of my desk.
Here is the list of hardware I was in physical contact with:
- a keyboard
- a mouse
- a chair
- a coffee cup
df shows free space (see update below)
After the reboot, I noticed a small but significant change to the df command in AIX 7. It now displays free space by default, without using the -I flag. I still like to have the sizes in Gigabytes, so I used df -g
# df -g
Filesystem GB blocks
Free %Used Iused %Iused Mounted
0.38 0.17 55%
10177 18% /
2.00 0.32 84%
41293 30% /usr
0.56 0.22 62%
12238 17% /var
1.06 1.06 1%
69 1% /tmp
0.06 0.06 1%
13 1% /home
0.12 0.12 1%
5 1% /admin
4.94 1.34 73%
98194 20% /opt
0.25 0.25 1%
4 1% /var/adm/ras/livedump
0.12 0.04 65%
13 1% /tftpboot
16.00 5.74 65%
64201 5% /export/eznim
The default output of the df command hasn't changed from AIX 6 to AIX 7. It just took me to do a migration to notice!
AIX 7 migration - a positive experience
It was a very straightforward migration with no surprises, apart from some warnings about missing filesets to do with virtual devices. I ignored them and they went away (the warnings, not the devices).
I am tempted to use the VM Library rather than NIM for the other LPARs I have to do, as most of the LPARs are on the one physical server and are clients of the same VIO server.
Installing AIX 7.1 was a very positive experience.
From my desk in the remote antipodes, I'm reaping the benefits of virtualisation on IBM Power Systems. Looks to me that IBM has done a great job with AIX 7.1.