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Simplifying AIX Live Update with PowerVC
Starting with AIX Version 7.2, the AIX operating system provides the Live Update function which eliminates downtime required when patching the AIX operating system kernel. Your application workloads are not stopped, yet they can take advantage of the new fixes immediately after the Live Update operation, without a reboot. Administrators can use the Live Update feature to install AIX interim fixes, service packs and technology levels. In a nutshell, Live Update allows AIX administrators to install AIX updates in-place, but instead of... [More]
Tags:  7.2 blog openstack pvcauth powervc aix live update novalink hmc tl2 power8 chris vios cloud geninstall powervm gibson power |
IVM and VLAN Tagging
I was working
with a customer recently on a Power Blade that was running the Integrated
Virtualisation Manager (IVM). They’d installed a VIO partition onto the Blade
and had hoped to install a couple of AIX LPARs on the system. However they didn’t
get very far. As soon as they
attempted to NIM install the LPARs, they would get stuck at trying to ping the
NIM master from the client. Basically, the Shared Ethernet Adapter (SEA) was
not working properly and none of the LPARs could communicate with the external
network. So they asked for... [More]
Tags:  ivm chhwres vlan lshwres tag aix vios sea |
Understanding viostat -adapter vfchost output.
The first
time I ran the ’ viostat –adapter’ command I expected to find
non-zero values for kbps , tps , etc, for each vfchost adapter. However, the values were always zero, no matter
how much traffic traversed the adapters.
$ viostat
-adapter 1 10
... vadapter: Kbps tps
bkread ... [More]
Tags:  virtual vios channel powervm aix vfchost fibre vfc viostat npiv -adapter |
Make sure you monitor file system space on your VIOS.
Make sure you are monitoring file
system space on your VIOS. Why? If you run out of space in the root
file system, odd things can happen when you try to map virtual devices to
virtual adapters with mkvdev . For example, a colleague of mine was
attempting to map a new hdisk to a vhost adapter on a pair of VIOS. The VIOS
was running a recent version of code. He received the following error message
(see below). It wasn’t a very helpful message. At first I thought it was due to
the fact that he had not set the reserve_policy attribute... [More]
Tags:  this_may_or_may_not_indic... root_filesystem_is_full vios aix mkvdev cli_debug=33 powervm 0514-548 chris_gibson the_command's_response_wa... |
VSCSI hdisk path priority - which path am I using?
Here’s a question I received recently, that relates to virtual
SCSI hdisk path priority. Hi, Chris, I use MPIO for our virtualization environment. I'd like to check which path is currently used. How can I get the result? For example: [nim:/]# lspath Enabled hdisk0 vscsi0 Enabled hdisk0 vscsi1 Enabled hdisk2 vscsi2 Enabled hdisk1 vscsi1 Enabled hdisk1 vscsi0 Enabled hdisk3 vscsi2 Enabled hdisk2 vscsi3 Enabled hdisk3 vscsi3 How can I determine vscsi0 or vscsi1 is currently carrying data
through VIOS and VIOC. Thanks a lot! By default... [More]
Tags:  priority aix hdisk gibson vios vscsi chris |
Virtual I/O Server and DS5020 disk.
Recently I
had the pleasure of configuring a couple of POWER7 720s for a customer. Each
720 was to host roughly 12 LPARs each. There were two VIO servers and a NIM
server per 720. Everything
went along nicely and according to plan. In a few days we had both systems
built. My steps for building the systems were almost identical to those
described by Rob McNelly in a recent post . All four
VIO servers were running the latest VIOS code i.e. 2.2.0.10-FP-24 SP-01 . All the client LPARs were running AIX 6.1 TL6 SP3 . Each VIOS... [More]
Tags:  ds5020 aix vios |
Can't change max_transfer for a VSCSI hdisk? Check your vtopt devices!
When attempting to change the max_transfer attribute on a VSCSI hdisk, the following error was displayed: #
chdev -l hdisk0 -a max_transfer= 0x100000 -P Method
error (/etc/methods/chgdisk):
0514-018 The values specified for the following attributes
are not valid: max_transfer
Maximum TRANSFER Size The
desired value, 0x100000, was an allowed value for this type of device (as shown
in the lsattr output below): #
lsattr -El hdisk0 PCM
PCM/friend/vscsi
Path Control... [More]
Tags:  rmdev vtopt0 max_transfer rmvdev aix vios chdev hdisk cd0 virtual_optical vio |
SSP and Disaster Recovery (Tech Preview)
I’ve been working with a customer recently that required a special kind of disaster recovery capability for their shared storage pool (SSP) environment. The customer had implemented a private cloud solution in their existing POWER environment. The solution consisted of an IBM SmartCloud deployment with IBM Systems Director and VMControl managing the PowerVM deployment of virtual machines (AIX partitions) across the landscape. The decision to use shared storage pools was driven by the fact that the customer was using SAN storage... [More]
Tags:  ssp aix vios dr recovery chris disaster gibson |
LPM and viosecure
I came across this strange LPM issue recently. Thought I’d share it with you. All the customers VIOS were configured with the viosecure level set to high . When the VIOS is configured with a security profile set to high , PCI or DoD , a new feature is enabled during LPM. This new feature is called “ Secure LPM ”. As a result when you initiate an LPM operation, the “Secure LPM” feature automatically enables the VIOS firewall and configures a secure (ipsec) tunnel for all LPM traffic over the network.... [More]
Tags:  lpm ipsec firewall vios hscla230 |
SMS SAN zoning support
Until recently, if you were
configuring a new LPAR with virtual FC adapters you couldn’t force it to log
into the SAN before an operating system (such as AIX) was installed. I’ve
written about this before (see link below). I also offered a way to work around
this issue. https://www.ibm.com/developerworks/mydeveloperworks/blogs/cgaix/entry/new_hmc_commands_chnportlogin_and_lsnportlogin_login_in_virtual_fibre_channel_adapters_for_npiv_client_lpars1?lang=en As mentioned in my post, there are
new HMC commands to force a new LPAR to connect... [More]
Tags:  npiv virtual_fibre_channel powervm chris_gibson power_systems aix vios vfc |