HSCLA27C, reserve_policy and LPM validation error.
A customer was attempting to move an LPAR from one POWER7 750
to another POWER7 750 using Live Partition Mobility (LPM). But he was receiving
the following error message when performing an LPM validation. This was an
easy one to fix. The reserve policy on the hdisk on the VIOS (yes, it was a
single VIO server not dual VIOS, don’t ask why!) was set to PR_exclusive instead of no_reserve. $ lsmap
–vadapter vhost0 SVSA Physloc Client
Partition ID... [More]
Tags:  aix live mobility lpm partition gibson reserve_policy hscla27c chris |
Creating a CAA cluster on AIX 7.1.
In this post I’ll demonstrate how to
create a Cluster Aware AIX (CAA) cluster on AIX 7.1. I’ll create a simple
two-node CAA cluster. I’ll then check the cluster status and, finally, remove
the cluster. Before I start, I make sure that both
nodes have entries in /etc/hosts on both systems. node1[/] > grep node /etc/hosts 172.29.134.169
node1 172.29.152.160
node2 node2[/] > grep node /etc/hosts 172.29.134.169
node1 172.29.152.160
node2 I verify that cluster services are not
active on both nodes. node1[/tmp/cg]... [More]
Tags:  creating mkcluster lscluster caavg_private caa 7.1 cluster chris gibson aware creation aix |
JFS2 logging disabled during mksysb restore.
While attending the IBM Power Systems
Symposium this week, I learnt that starting with AIX 7.1 (and AIX 6.1 TL6) JFS2
logging is disabled during a mksysb restore. You may be familiar with disabling
JFS2 logs, if not, take a look at this IBM technical note: https://www-304.ibm.com/support/docview.wss?uid=isg3T1012643 I’ve been unable to find any official
documentation from IBM that mentions this new enhancement to the mksysb restore
process. However, when I checked my own AIX 7.1 system I found the following
statement/code in the... [More]
Tags:  mksysb log=null disabled logging jfs2 chris aix gibson |
Querying the Cluster Aware AIX solidDB database.
Did you
know that you can connect to and query the new solidDB database used by Cluster
Aware AIX (CAA)? You can
connect to the solidDB instance and issue SQL queries against the database. In
the following example, I issued two queries: one to list the tables in the
database and another to query information relating to the nodes in the cluster.
The formatting in the second query is a mess, but you get the idea. root@node1:/>
/opt/cluster/solidDB/bin/solsql
-x pwdfile:/etc/cluster/dbpass 'tcp localhost 2188' caa IBM
solidDB SQL... [More]
Tags:  soliddb solsql aware gibson caa chris /opt/cluster/soliddb/bin/... cluster aix |
How much memory or CPU will that CoD code activate anyway?
This little tip was passed on to me by
a friendly IBM hardware engineer many years ago. When entering a capacity on demand
(CoD) code into a Power system, you can tell how many processors and how much
memory will be activated, just by looking at the code you’ve given by IBM. For example, the following codes, when
entered for the appropriate Power system, will enable 4 processors (POD) and
64GB of memory (MOD). I can also tell* that once the VET code is entered, this
system will be licensed for PowerVM Enterprise Edition (2C28). ... [More]
Tags:  power cod gibson mod demand activation aix pod capacity chris code on powervm vet |