In the event you have two systems configured with identical UUIDs for their primary/control domain, for example following a disk clone or system duplication, or if you wish to change the UUID for your own reasons, you can use the following procedure to do so. 1. Backup all of your current LDOMs configuration. How to […]
LDOMs
LDOMs troubleshooting : guest and control domains can not talk to each other but can talk with anyone else on the network
One of the common mistakes done while configuring the guest LDOMs for the first time is – to not configure control domain for inter domain communications. In this case the control domain and guest ldoms can talk to everyone on the network but not to each other. There are 2 scenarios: 1. If one just […]
How to Collect a Forced Crash Dump of a Hanging Solaris Guest LDom
A Solaris system panics when it encounters an unrecoverable software or hardware error. When a panic occurs, it saves data about the state of the system and then reboots. A crash dump is created so that an Oracle engineer can determine the reason for the panic. The post describes a manual way to generate a […]
Solaris 11 : Increasing the size of a vdisk in LDom ( with backend device as ZFS volume )
LDom supports a number of possible other devices to be exported by the virtual disk server as a virtual disk to the guest domain. You can export a physical disk, disk slice, volumes, or file as a block device. The following procedure is based on a setup of ZVOLs for underlying backend device on primary […]
The Ultimate LDOMs troubleshooting guide
Most of the LDOM issues can be easily resolved by looking at the error message. Below are some of the most commonly faced LDOM issues and basic troubleshooting tips to resolve them. 1. Unable to create LDom 2. Unable to install LDom 3. Unable to configure LDom 4. Unable to bind LDom 5. Unable to […]
LDOMs (OVM for SPARC) Command line reference [cheat sheet]
Display Default LDOM services Purpose Command Check ldom manager (ldmd) # svcs ldmd Check vntsd is running # svcs vntsd Check Default Services are running # ldm list-services primary Check ldm software # ldm -V check ldoms manager package in Solaris 11 # pkg info ldomsmanager Creating Default LDOM services Purpose Command add virtual console concentrator […]
OVM for SPARC (LDOMs) : Troubleshooting console issues
Basics In a Logical Domains environment, console I/O from all domains, except the primary domain, is redirected to a service domain running the virtual console concentrator (vcc) and virtual network terminal server (vntsd) services, instead of the systems controller. The virtual console concentrator service functions as a concentrator for all domains, console traffic, and interfaces […]
How to assign CPU/Memory/MAU resources to Guest LDOMs [OVM for SPARC]
The CPU, Memory and MAU resources can be added/removed dynamically to/from the guest LDOMs. Before adding the resources to guest LDOMs make sure you check the available resources in the primary domain : # ldm ls -o memory # ldm ls -o cpu # ldm ls -o mau Resources and their meanings The various resources […]
How to add/remove vdisk to/from Guest LDOMS online
Prerequisites In order to add vdisk online to a guest LDOM, the SMF service svc:/platform/sun4v/drd must be online in Guest LDOM : ldom01 # svcs drd STATE STIME FMRI online Feb_12 svc:/platform/sun4v/drd:default 1. Adding ZFS volume primary # zpool list NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT ldom 86.5G 14.6G 71.9G 16% 1.00x ONLINE […]
How to rename a LDOM (OVM for SPARC)
In some rare situations you may get a request to change the name of the LDOM. This can be done in 2 ways. 1. Using live migration (can be done online) 2. By editing XML constraints file (requires downtime) Using live migration feature (online) In this case we migrate the guest LDOM to another machine […]