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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en-us" lang="en-us"><head><title>SMF Support Specification Document</title>
<h1><a name="Functional_Specification_Documen"></a> Functional Specification Document for <strong>SMF support for SGE</strong> </h1>
<pre>Version 1.0 26/03/2008 Lubomir Petrik</pre>
<h2><a name="1_Introduction"></a> 1 Introduction </h2>
<p>
This document describes the Sun Grid Engine's SMF support.
SMF (Service Management Facility) is new feature in Solaris 10. The
purpose is to speed up boot time, provide permanent services and ease
up the administration of services and their dependencies.
</p><p>
</p><h2><a name="2_Project_Overview"></a> 2 Project Overview </h2>
<h3><a name="2_1_Project_Aim"></a> 2.1 Project Aim </h3>
<p>
After the project is completed SGE should be able to: </p><ol>
<li> To be controlled over SMF administrative commands as well as old qconf interfaces (-km, ke) on Solaris 10+. <span style="color: blue;">MANDATORY</span>
</li> <li> Support all existing commands like: migrate qmaster, etc. <span style="color: blue;">MANDATORY</span>
</li> <li> Provide option -nosmf to installation scripts not to use SMF. <span style="color: blue;">MANDATORY</span><span style="color: blue;"></span>
</li> <li> <span style="color: blue;"><span style="color: black;">We might provide an RBAC role solaris.smf.sge.access, </span></span><span style="color: blue;"><span style="color: black;">solaris.smf.sge.modify and appripriate profiles SGE manager/SGE operator,</span></span><span style="color: blue;"><span style="color: black;">
so that SGE manager and operator can get it during the installation and
are later allowed to start/stop SGE over SMF / modify the SGE SMF
service manifest. This also means that the service manifest already
support and check for these roles. <span style="color: blue;">OPTIONAL</span></span></span>
</li> <li> <span style="color: blue;"><span style="color: black;"><span style="color: blue;"><span style="color: black;">As an addition to 4. we might want to start each SGE processes with only necessary privileges. For increasing security </span></span></span></span><span style="color: blue;"><span style="color: black;"><span style="color: blue;">OPTIONAL</span></span></span><span style="color: blue;"><span style="color: black;"><span style="color: blue;"><span style="color: black;"></span><br></span></span></span>
</li></ol>
<p>
</p><h3><a name="2_2_Project_Benefit"></a> 2.2 Project Benefit </h3>
<p>
The SMF support can improve bootup time, administration of SGE for administrators used to work with SMF and SGE availability.<br>
</p><p>
</p><h3><a name="2_3_Project_Duration"></a> 2.3 Project Duration </h3>
<p>
All estimated values are net times which mean working full time on the project without interruption.
</p><p>
Core development:
</p><table style="border-width: 1px;" border="1" cellpadding="0" cellspacing="0"><tbody><tr><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Task</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Duration in Man Weeks</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">possible engineer</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">state</a> </th></tr>
<tr><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> <a>Research</a> </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> 1 </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> LP </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> closed </td></tr>
<tr><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> <a>Prepare</a> </td><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> 1 </td><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> LP </td><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> closed </td></tr>
<tr><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> <a>Integrate</a> </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> 1 </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> LP </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> closed </td></tr>
<tr><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> <a>Test</a> </td><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> 1 </td><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> LP </td><td style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> closed </td></tr>
</tbody></table>
<p>
Additionally:
</p><table style="border-width: 1px;" border="1" cellpadding="0" cellspacing="0"><tbody><tr><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a rel="nofollow" style="color: rgb(255, 255, 255);" >Task</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a rel="nofollow" style="color: rgb(255, 255, 255);">Duration in Man Weeks</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a rel="nofollow" style="color: rgb(255, 255, 255);">possible engineer</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a rel="nofollow" style="color: rgb(255, 255, 255);" >state</a> </th></tr>
<tr><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> Doc support </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> 1/3 </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> LP </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> open </td></tr>
</tbody></table>
<p>
</p><h3><a name="2_4_Project_Dependencies"></a> 2.4 Project Dependencies </h3>
<p>
</p><table style="border-width: 1px;" border="1" cellpadding="0" cellspacing="0"><tbody><tr><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Available</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Supplier</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Product/Project/Interface</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Dependency</a> </th></tr>
<tr><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> now </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> Sun Microsystems </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> Solaris 10 </td><td style="vertical-align: top;" bgcolor="#ffffff" valign="top"> OS </td></tr>
</tbody></table>
<p>
<a name="MileStones"></a>
</p><h3><a name="2_5_Milestones"></a> 2.5 Milestones </h3>
<p> </p><ol>
<li> <strong>Research the SMF and SGE startup procedures</strong> <ul>
<li> Study the SMF
</li> <li> Study qmaster/execd startup scripts<br>
</li> <li> Test the functionality and behavior with SGE installation
</li></ul>
</li> <li> <strong>Prepare all required information from SGE that SMF needs</strong> <ul>
<li> The SMF Support Project Definition and Specification Document
</li> <li> Prepare a prototype to prove that SMF can work with SGE
</li></ul>
</li> <li> <strong>Integrate the SMF support to SGE start/stop/install/uninstall process</strong> <ul>
<li> Finalize The SMF Support Project Definition and Specification Document
</li> <li> Modify install script to get the SMF required information in installation time
</li> <li> Create a test sge_smf.sh script to support operations like:
register/unregister [qmaster|shadowd|execd|dbwriter|bdb] | supported
</li> <li> Modify install, startup scripts to call the SMF support script where needed
</li> <li> Create custom stop methods for each service<br>
</li></ul>
</li> <li> <strong>Test and document</strong> <ul>
<li> Test the installation process
</li> <li> Test the multi cluster scenario
</li> <li> Create doc page for SMF support in sge
</li></ul>
</li></ol>
<h2><a name="3_System_Architecture"></a> 3 System Architecture </h2>
<p>
</p><h3><a name="3_1_Enhancement_Functions"></a> 3.1 Enhancement Functions </h3>
<p> </p><ul>
<li> The SGE should integrate with SMF
</li></ul>
<p>
</p><h3><a name="3_2_Overall_Block_Diagram"></a> 3.2 Overall Block Diagram </h3>
<p> </p><ul>
<li> The SMF. <ul>
<li> SMF service repository
</li> <li> The svcadm/svccfg/svcprop/svcs command line interfaces
</li></ul>
</li> <li> The Sun Grid Engine <ul>
<li> bdb<br>
</li> <li> qmaster
</li> <li> execd
</li> <li> shadowd<br>
</li> <li> dbwriter
</li></ul>
</li></ul>
<p>
</p><h2><a name="4_Functional_Definition"></a> 4 Functional Definition </h2>
<p>
</p><h3><a name="4_1_Performance"></a> 4.1 Performance </h3>
No impact on performance is expected. Booting machine might a bit faster.
<p>
</p><h3><a name="4_2_Reliability_Availability_Ser"></a> 4.2 Reliability, Availability, Serviceability (RAS) </h3>
Administrators will then have a chance to control SGE startup via SMF.
<p>
</p><h3><a name="4_3_Diagnostics"></a> 4.3 Diagnostics </h3>
<p>The new util /sgeSMF/sge_smf.sh command is added. This command can
be used for detecting if the SMF is available. We might consider not to
document it though. Administators should use SMF commands to check if
SMF SGE services are present on the system.<br>
</p><p>
</p><h3><a name="4_4_User_Experience"></a> 4.4 User Experience </h3>
<p>
SMF will be automatically used on Solaris 10 hosts unless -nosmf option
is provided. User will have to additionally name the cluster he/she is
installing. This cluster name will become part of the service name.
</p><p>
</p><h3><a name="4_5_Manufacturing"></a> 4.5 Manufacturing </h3>
<h3><a name="4_6_Quality_Assurance"></a> 4.6 Quality Assurance </h3>
<h4><a name="4_6_1_Testsuite_adjustments"></a> 4.6.1 Testsuite adjustments </h4>
The testsuite must know about a new installation option and should handle it correctly and test the correct behavior.
<p>
</p><h4><a name="4_6_2_Testsuite_tests"></a> 4.6.2 Testsuite tests </h4>Testsuite
tests will verify that a new sge_smf.sh wrapper script works. The new
tests also include positive and negative tests for all options of this
new command.
<p>
</p><h4><a name="4_6_3_Tested_the_auto_installati"></a> 4.6.3 Tested the auto installation </h4>
The auto installation should be tested. Install template now contains cluster name.<br>
<p>
</p><h4><a name="4_6_4_Backup_the_SMF_files_test"></a><a name="4_6_4_Backup_the_SMF_files_test_"></a> 4.6.4 Backup the SMF files test? </h4>No
backup needed. We will not support backing up the SMF repository. That
can be done by the administrator. SMF also supports snapshots of the
service manifests.
<p>
</p><h3><a name="4_7_Security_Privacy"></a> 4.7 Security & Privacy </h3>
<p>
</p><h3><a name="4_8_Migration_Path"></a> 4.8 Migration Path </h3>
<p>After upgrading to 6.2 version, the administrator will not have a
chance to enable SMF support. The reason is that we need to reinstall
the hosts in order to register them as SMF services. </p><p>
<span style="color: blue;">OPTIONAL:</span> We could provide a script
that would connect to all existing hosts, remove RC scripts (any
customizations would be lost) and enabled SMF from the new templates
after the migration has been finished.
</p><p>
</p><h3><a name="4_9_Documentation"></a> 4.9 Documentation </h3>
<p>No new man page will be added, sge_smf.sh command is a helper script
and as such should not be used by the users. Only
installation/users/administration guide will explain the SMF support.
</p><p>
</p><h3><a name="4_10_Installation"></a> 4.10 Installation </h3>
Administrator can disable SMF support my adding -nosmf option to the install script.<br>
<p>
</p><h3><a name="4_11_Packaging"></a> 4.11 Packaging </h3>
New files in the distribution will be at $SGE_ROOT/util/sgeSMF:
<pre>sge_smf.sh - script for import/deleting SGE services to/from the repository
</pre>
<pre>sge_smf_support.sh - helper script for sge_smf
</pre>
<pre>bdb_template.xml
</pre>
<pre>qmaster_template.xml
</pre>
<pre>shadowd_template.xml
</pre>
<pre>execd_template.xml
</pre>
<p>
At $SGE_ROOT/dbwriter/util/sgeSMF:
</p><pre>dbwriter_template.xml
</pre>
<p>
<a name="LimitationsSet"></a>
</p><h3><a name="4_12_Issues_Risks_and_Proposed_M"></a> 4.12 Issues/Risks and Proposed Mitigation </h3> <ol>
<li> SMF needs an unique service name - this mean we need to ask user how to name the cluster
</li> <li> Upgrade (migration) from RC to SMF will not be done automatically. See 4.8
</li> <li> Getting the correct service dependencies might be difficult
</li> <li> TBD<br>
</li></ol>
<p>
</p><table style="border-width: 1px;" border="1" cellpadding="0" cellspacing="0"><tbody><tr><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Category</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Risk</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Impact (L/M/H)</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Probability (L/M/H)</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Mitigation Plan</a> </th><th style="text-align: center; vertical-align: top;" maxcols="0" align="center" bgcolor="#6b7f93" valign="top"> <a style="color: rgb(255, 255, 255);" title="Sort by this column">Owner</a> </th></tr>
<tr><td colspan="6" style="vertical-align: top;" bgcolor="#ffffff" valign="top"> </td></tr>
<tr><td colspan="6" style="vertical-align: top;" bgcolor="#edf4f9" valign="top"> </td></tr>
</tbody></table>
<p>
</p><h2><a name="5_Component_Descriptions"></a> 5 Component Descriptions </h2>
<h3><a name="5_1_Component_Service_Management"></a> 5.1 Component Service Management Facility (SMF) </h3>
<h4><a name="5_1_1_Overview"></a> 5.1.1 Overview </h4>SMF is new
feature in Solaris 10 providing unified model for controlling services.
Replaces RC scripts, handles service dependencies, provides better
service availability and speeds up boot process.
<p>
</p><h4><a name="5_1_2_Functionality"></a> 5.1.2 Functionality </h4>Installation
of each daemon should import appropriate service manifest to the SMF
repository. Services will then be controlled by the SMF framework
instead of RC scripts and startup scripts. Users no longer can use
startup scripts, if they want to use SMF.
<p>
Since SMF can define multiple instances of the same service we do the following:<br>Define
a unique name for a service and ask the user to provide a cluster name
during the installation which will become the service instance. </p><p>
<span style="color: blue;">OPTIONAL:</span> When we release
incompatible SGE version (increased cull version) we should provide a
new service name since these services are no longer compatible. This
needs also be done with there are any changes between the updates that
break any functionality.<br>
</p><p>
Qmaster service name example:<br>First release: <br>application/sge/qmaster:test<br>application/sge/qmaster:production<br>We release incompatible update:<br>application/sge_v62u1/qmaster:test
</p><p>
The reason why we should do this is that other service providers can
depend on our service and they might expect certain version of the
software/functionality to work. If we provide just
application/sge/qmaster service any qmaster instance present on the
system would satisfy such dependency.
</p><p>After a discussion we decided not to do this as we don't expect
anyone to depend on our services. Once that happens we still might do
it, for now we don't add SGE_VERSION to the service name.
</p><p>
Service manifests are stored in SMF repository database in XML. Qmaster service manifest template example:<br>
</p><p>
</p><pre><?xml version='1.0'?>
<!DOCTYPE service_bundle SYSTEM '/usr/share/lib/xml/dtd/service_bundle.dtd.1'>
<service_bundle type='manifest' name='export'>
<service name='application/sge/qmaster' type='service' version='0'>
<dependency name='network' grouping='require_all' restart_on='none' type='service'>
<service_fmri value='svc:/milestone/network'/>
</dependency>
<dependency name='fs-autofs' grouping='optional_all' restart_on='none' type='service'>
<service_fmri value='svc:/system/filesystem/autofs'/>
</dependency>
<instance name='test' enabled='false'>
<exec_method name='start' type='method' exec='/grid/sge/default/common/sgemaster -qmaster %m' timeout_seconds='30'>
<method_context>
<method_environment>
<envvar name='SGE_ROOT' value='/grid/sge'/>
<envvar name='SGE_QMASTER_PORT' value='21636'/>
<envvar name='SGE_CELL' value='default'/>
</method_environment>
</method_context>
</exec_method>
<exec_method name='stop' type='method' exec=':kill' timeout_seconds='60'/>
<property_group name='startd' type='framework'>
<propval name='ignore_error' type='astring' value='signal'/>
</property_group>
</instance>
<stability value='Unstable'/>
<template>
<common_name>
<loctext xml:lang='C'>Sun Grid Engine - QMaster service</loctext>
</common_name>
<documentation>
<manpage title='sge_qmaster' section='8M' manpath='/grid/sge/man'/>
</documentation>
</template>
</service>
</service_bundle>
</pre>
<p>NOTE: Service does not depend on bootstrap file due to outstanding
bugs in SMF. Instead startup script might check it's presence and exit
with $SMF_EXIT_ERR_CONFIG.
</p><h4><a name="5_1_3_Interfaces"></a> 5.1.3 Interfaces </h4>
Command administrator can use to control, query or customize services:<br>
<pre>svccfg(1M)
</pre>
<pre>svcadm(1M)
</pre>
<pre>svcs(1)
</pre>
<pre>svcprop(1)
</pre>To import the service manifests during the installation either
root has to do it or the users has to possess appropriate profile
(Solaris Management/Operator or just or custom profile see 2.1.4). Some
for managing the services with svcadm. For SMF to be enabled in SGE
installation we will require root.<br>
<p>
</p><h4><a name="5_1_4_Other_Requirements"></a> 5.1.4 Other Requirements </h4>
None<br>
<p>
</p><h3><a name="5_2_Component_Sun_Grid_Engine"></a> 5.2 Component Sun Grid Engine </h3>
<h4><a name="5_2_1_Overview"></a> 5.2.1 Overview </h4>
Sun Grid Engine consists of several daemons that will now be controlled by SMF framework on Solaris 10+.<br>
<p>
</p><h4><a name="5_2_2_Functionality"></a> 5.2.2 Functionality </h4>
The inst_sge script will prompt always for the cluster name and this
name will be used as an instance name for the service that will be
imported to the SMF repository. If installation is done on other
OS/version or -nosmf is provided to the script, SMF will not be used.
installation will remain the same as in the previous version (except
for new features questions). Installation will check if such service
instance already exists and will require a new name.<br>
<p>
Inside the installation SMF support function sge_smf.sh is called. This
command is located in the util/sgeSMF directory. This command wraps SMF
interfaces and publishes just a simple client interface. </p><p>
sge_smf.sh register|unregister|supported|help
</p><p>
The options of this command is described in this component interface section.
</p><p>
The sge_smf.sh command is designed to be callable inside the inst_sge script as well as a standalone command.
</p><h1><a name=""></a> </h1>
<h2><a name="SGE"></a> SGE<br> </h2>
<h5><a name="The_inst_sge_changes"></a> The inst_sge changes </h5>
The inst_sge will be extended to include the <em>Enter unique cluster name dialog</em> and will call SMF functions for registering the service, when SMF supported system is detected.<br>
<p>
</p><h5><a name="The_new_util_sgeSMF_sge_smf_sh_c"></a> The new util/sgeSMF/sge_smf.sh client interface added </h5>
The sge_smf command script will be added. Please see the functionality section.
<p>
</p><h5><a name="The_new_util_sgeSMF_qmaster_temp"></a> The new util/sgeSMF/qmaster_template.xml file </h5>
Template for qmaster service manifest.
<h5><a name="The_new_util_sgeSMF_shadowd_temp"></a> The new util/sgeSMF/shadowd_template.xml file </h5>
Template for shadowd service manifest.
<h5><a name="The_new_util_sgeSMF_bdb_template"></a> The new util/sgeSMF/bdb_template.xml file </h5>
Template for BDB server service manifest.<br>
<p>
</p><h5><a name="The_new_util_sgeSMF_execd_templa"></a> The new util/sgeSMF/execd_template.xml file </h5>
Template for execd service manifest.
<p>
In addition auto_install must handle cluster name.
</p><p>
</p><h2><a name="QMASTER"></a> QMASTER </h2>
svc:/application/sgeqmaster:<SGE_CLUSTER_NAME>
<p>
Since default HA is ensured by configuring optional shadowd that
take over its functionality, we should not automatically restart
QMASTER service. In real HA availability scenarios (deployment in Sun
Cluster) it's also not desired to do the restarting as
well, in this case SC is responsible for restarting the service.
</p><h3><a name="OLD_read_6_1_BEHAVIOUR_with_RC_s"></a> OLD (read 6.1) BEHAVIOUR with RC scripts: </h3>
<p>
<strong>sgemaster stop, qconf -km, kill -15</strong> Correct shutdown,
service does not start
</p><p>
<strong>kill -9</strong> Incorrect shutdown, service does not start
</p><p>
<strong>reboot</strong> Service starts
</p><h3><a name="SMF_BEHAVIOUR"></a><a name="SMF_BEHAVIOUR_"></a> SMF BEHAVIOUR: </h3>
NOTE: kill -9 will no longer shutdown qmaster, SMF will restart it.
<p>
<strong>svcadm disable -t qmaster:<SGE_CLUSTER_NAME></strong> The
correct way in SMF to stop the service, without turning off automatic
startup after reboot. Service is correctly stopped.
</p><p>
Other old interfaces still can be used
as they simulating the old behaviour:
</p><p>
<strong>sgemaster stop, qconf -km, kill -15</strong> Correct shutdown, SMF
qmaster handles the SIGTERM and temporary disables the service instance
– SAME
</p><p>
<strong>kill -9</strong> Incorrect shutdown, SMF detects interrupted
service and restarts the service – DIFFERENT
</p><p>
<strong>reboot</strong> Service starts
</p><p>
</p><h2><a name="SHADOWD"></a> SHADOWD </h2>
svc:/application/sge/shadowd:<SGE_CLUSTER_NAME>
<p>
Uses same scripts and functionality as QMASTER, logic is unchanged
takes over if it detects no qmaster is alive.
</p><p>
</p><h2><a name="EXECD"></a> EXECD </h2>
svc:/application/sge/execd:<SGE_CLUSTER_NAME>
<h3><a name="OLD_BEHAVIOUR_with_RC_scripts"></a><a name="OLD_BEHAVIOUR_with_RC_scripts_"></a> OLD BEHAVIOUR with RC scripts: </h3>
<p>
<strong>sgeexecd stop, qconf -kej</strong> Correct shutdown, service does
not start
</p><p>
<strong>qconf -ke, kill -15</strong> Correct shutdown, service does not
start
</p><p>
<strong>kill -9</strong> Incorrect shutdown, service does not start
</p><p>
<strong>reboot</strong> Service starts
</p><p>
</p><h3><a name="SMF_BEHAVIOUR"></a><a name="SMF_BEHAVIOUR_"></a> SMF BEHAVIOUR: </h3>
<p>
Due to the fact that in 6.1 shepherds are
part of the execd contract, when execd is killed service remains online
until last job finished. We need to implement a new behavior (see
below). To do this we need to use both libcontract to start shepherds
in new contract on SMF supported systems and libscf to distinguish
between kill -15 and qconf -ke <host> scenarios. Such behavior is the desired and correct from the SMF point of
view.
</p><p>
NOTE: kill -9 will no longer shutdown execd, SMF will restart it.
</p><p>
Once sgeexecd is the only service in the contract we can have this
desired behavior:
</p><p>
<strong>svcadm disable -t execd</strong> Correct
shutdown, jobs are NOT terminated
</p><p>
<strong>sgeexecd stop</strong> Correct shutdown, detects if using SMF
and calls svcadm disable -ts, job shepherds are terminated, jobs NOT
terminated<br>
</p><p>
<strong>kill -9</strong> Incorrect shutdown, SMF detects
interrupted service and restarts the service DIFFERENT (NEW behavior)
</p><p>
<strong>kill -15, qconf -ke/-kej</strong> Correct shutdown, we need to use libscf to directly change the service state
to temporary disabled
</p><p>
<strong>reboot</strong> Service starts
</p><p>
</p><h1><a name=""></a> </h1>
<h2><a name="DBWriter"></a> DBWriter </h2>
svc:/application/sge/dbwriter:<SGE_CLUSTER_NAME>
<p>
After installation DBWriter will now always be started. And the java process ReportingDBWriter will be the only process running in the contract after the startup.
</p><p>
SMF will now restart the DBWriter if it detects the it does not run
unless sgedbwriter stop or svcadm disable -t
dbwriter:<SGE_CLUSTER_NAME> was issued.<br>
</p><h5><a name="The_inst_dbwriter_changes"></a> The inst_dbwriter changes </h5>
The inst_dbwriter will be extended to call SMF functions for
registering the service, when SMF supported system is detected. As
cluster name will be reused for the SGE installation. User will not
have a chance to select it, it will be always read from
$SGE_ROOT/$SGE_CELL/common/cluster_name file<br>
<p>
</p><h5><a name="The_new_dbwriter_util_sgeSMF_dbw"></a> The new dbwriter/util/sgeSMF/dbwriter_template.xml file </h5>
Template for dbwriter service manifest.
<p>
</p><h2><a name="Berkeley_RPC_server"></a> Berkeley RPC server </h2>
svc:/application/sge/bdb:<SGE_CLUSTER_NAME>
<p>
After installation BDB will now always be started.
</p><p>
SMF will now restart the BDB if it detects the it does not run
unless sgebdb stop or svcadm disable -t bdb:<SGE_CLUSTER_NAME> was issued.
</p><h5><a name="The_new_util_sgeSMF_bdb_template"></a> The new util/sgeSMF/bdb_template.xml file </h5>
Template for bdb service manifest
<p>
</p><h4><a name="5_2_3_Interfaces"></a> 5.2.3 Interfaces </h4>
SMF will be automatically used on Solaris 10+ systems, unless -nosmf is
provided as an argument to the installation scripts. If SMF is used
svcadm, svcs, etc. commands should be used to enable/disable/customize
SGE services.
<p>
<strong>DBWriter</strong>
</p><p>DBwriter startup will be changed, so that only the java process
remains running. Startup script sgedbwriter will incorporate
dbwriter.sh options and dbwriter.sh will become just a wrapper to the
sgedbwriter. Both will now have the same interface:
</p><pre>usage: sgedbwriter [-debug] [-debug_port <port>] [print <setting>] [-h] [start|stop]
</pre>
<pre> start start the dbwriter as background process (default)
</pre>
<pre> stop stop the dbwriter
</pre>
<pre></pre>
<pre> -debug start the dbwriter in in debug mode
</pre>
<pre> -debug_port <port> port for debugging (default 8000)
</pre>
<pre></pre>
<pre> print dbwriter setting is printed to stdout.
</pre>
<pre> The following settings are available:
</pre>
<pre></pre>
<pre> pid_file print the default pid file
</pre>
<pre> log_file print the default log file
</pre>
<pre> spool_dir print the default spool directory
</pre>
<pre> -h this help text is printed
</pre>
<pre></pre>
<p>
All other functionality and user experience should be unchanged.
</p><p>DBWriter starup logic should be further improved, so we can
check that the service is actually running before running from the SMF
start method. <br>
</p><p>
</p><h5><a name="The_util_sgeSMF_sge_smf_sh_clien"></a> The util/sgeSMF/sge_smf.sh client </h5>
<p>
The sge_smf.sh command <span style="color: blue;">might</span> offer to <strong>enable</strong> / <strong>disable</strong> qmaster|execd|.. services as an alternative to the svcadm enable/disable command.
</p><p>
<span style="color: blue;">Will</span> provide <strong>register</strong> / <strong>unregister</strong> to import/delete service manifest to/from the repository and <strong>supported</strong> to query if the system is capable of using SMF.
</p><p>
</p><h4><a name="5_2_4_Other_Requirements"></a> 5.2.4 Other Requirements </h4>
None<a name="TopicEnd"></a>
<p>
<p></p></body></html>
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