OVM for SPARC Primer part 5

Modifying resource allocations on ldoms:

To get a detailed view of current configuration & resource allocations of the guest domain type:

#ldm list-bindings domainname

To increase CPU/memory resources on an ldom type the following:

bash-3.00# ldm list-domain  domain1

NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME

domain1          inactive   ------          2     1G

bash-3.00# ldm set-mem 2g  domain1

bash-3.00# ldm set-vcpu 4  domain1

bash-3.00#

bash-3.00# ldm list-domain  domain1

NAME             STATE      FLAGS   CONS    VCPU  MEMORY   UTIL  UPTIME

domain1          inactive   ------          4     2G

bash-3.00#

To check for available resources go to primary domain & get total available resources from prtdiag command & subtract from that the aggregate of resources currently allocation to all the ldoms.

You can modify resource allocations to guest domains on the fly but in case of primary domain you need a reboot.

For troubleshooting purpose you may need to capture a crash dump requiring a panic to be executed.

You can panic a guest domain using the following command:

bash-3.00# ldm panic domain1

Some basic troubleshooting checks:

·         Check the status of required services

bash-3.00# svcs -l ldmd

fmri         svc:/ldoms/ldmd:default

name         Logical Domains Manager

enabled      true

state        online

next_state   none

state_time   Wed May 27 19:30:18 2015

logfile      /var/svc/log/ldoms-ldmd:default.log

restarter    svc:/system/svc/restarter:default

contract_id  42

dependency   require_all/none svc:/system/filesystem/local (online)

dependency   require_all/none svc:/network/loopback (online)

bash-3.00#

bash-3.00# svcs -l vntsd

fmri         svc:/ldoms/vntsd:default

name         virtual network terminal server

enabled      true

state        online

next_state   none

state_time   Wed May 27 19:30:21 2015

logfile      /var/svc/log/ldoms-vntsd:default.log

restarter    svc:/system/svc/restarter:default

contract_id  60

dependency   optional_all/error svc:/milestone/network (online)

dependency   optional_all/none svc:/system/system-log (online)

bash-3.00#

·         If there are any issues with services then check their corresponding log files for further analysis.

·         If the ldom manager version is greater than 3.0 you can view individual guest domain logs under /var/log/vntsd.

·         You can run explorer with ldom option to gather ldom related logs.

·         Check for consistency of /var/opt/SUNWldm/ldom-db.xml file.