RCM 脚本任务

1. 确定应用程序使用的资源。 

确定应用程序使用的可能要动态移除的资源（设备名称）。 

cfgadm(1M)

2. 确定用于释放资源的命令。 

确定用于通知应用程序从应用程序中正常释放资源的命令。 

应用程序文档 

3. 确定用于资源移除后进行后续处理的命令。 

包括用于通知应用程序资源移除的命令。 

rcmscript(4)

4. 确定资源移除失败时使用的命令。 

包括用于通知应用程序可用资源的命令。  

rcmscript(4)

5. 编写 RCM 脚本。 

根据任务 1-4 中标识的信息，编写 RCM 脚本。 

磁带备份 RCM 脚本示例

6. 安装 RCM 脚本。 

将脚本添加到相应的脚本目录中。 

如何安装 RCM 脚本

7. 测试 RCM 脚本 

通过手动运行脚本命令和启动动态重新配置操作来测试脚本。 

如何测试 RCM 脚本

1. 确定要动态删除的资源。 

使用 cfgadm -l 命令确定可能要删除的资源（设备名称）。

cfgadm(1M)

2. 确定要停止的应用程序。 

确定用于正常停止应用程序的命令。 

应用程序文档 

3. 确定用于在删除资源前后进行各种处理的命令。 

确定删除资源前后要执行的操作。 

rcmscript(4)

4. 编写 RCM 脚本。 

根据任务 1-3 中标识的信息，编写 RCM 脚本。 

磁带备份 RCM 脚本示例

5. 安装 RCM 脚本。 

将脚本添加到相应的脚本目录中。 

如何安装 RCM 脚本

6. 测试 RCM 脚本。 

通过手动运行脚本命令和启动动态重新配置操作来测试脚本。 

如何测试 RCM 脚本

/etc/rcm/scripts

特定系统的脚本 

/usr/platform/`uname -i`/lib/rcm/scripts

特定硬件实现的脚本 

/usr/platform/`uname -m`/lib/rcm/scripts

特定硬件类的脚本 

/usr/lib/rcm/scripts

任何硬件的脚本 

#! /usr/bin/perl -w

   #

   # A sample site customization RCM script.

   #

   # When RCM_ENV_FORCE is FALSE this script indicates to RCM that it cannot

   # release the tape drive when the tape drive is being used for backup.

   #

   # When RCM_ENV_FORCE is TRUE this script allows DR removing a tape drive

   # when the tape drive is being used for backup by killing the tape

   # backup application.

   #

    

    use strict;

    

    my ($cmd, %dispatch);

    $cmd = shift(@ARGV);

# dispatch table for RCM commands

    %dispatch = (

            "scriptinfo"    =>      \&do_scriptinfo,

            "register"      =>      \&do_register,

            "resourceinfo"  =>      \&do_resourceinfo,

            "queryremove"   =>      \&do_preremove,

            "preremove"     =>      \&do_preremove

    );

    

    

    if (defined($dispatch{$cmd})) {

            &{$dispatch{$cmd}};

    } else {

            exit (2);

    }

    

    sub do_scriptinfo

    {

            print "rcm_script_version=1\n";

            print "rcm_script_func_info=Tape backup appl script for DR\n";

            exit (0);

    }

    

    sub do_register

{

            my ($dir, $f, $errmsg);

    

            $dir = opendir(RMT, "/dev/rmt");

            if (!$dir) {

                 $errmsg = "Unable to open /dev/rmt directory: $!";

                 print "rcm_failure_reason=$errmsg\n";

                 exit (1);

            }

    

            while ($f = readdir(RMT)) {

                # ignore hidden files and multiple names for the same device

                if (($f !~ /^\./) && ($f =~ /^[0-9]+$/)) {

                        print "rcm_resource_name=/dev/rmt/$f\n";

                    }

                    

            }

    

            closedir(RMT);

            exit (0);

    }

sub do_resourceinfo

    {

      my ($rsrc, $unit);

    

      $rsrc = shift(@ARGV);

      if ($rsrc =~ /^\/dev\/rmt\/([0-9]+)$/) {

           $unit = $1;

           print "rcm_resource_usage_info=Backup Tape Unit Number $unit\n";

           exit (0);

       } else {

           print "rcm_failure_reason=Unknown tape device!\n";

            exit (1);

        }

    }

    

    sub do_preremove

    {

            my ($rsrc);

    

            $rsrc = shift(@ARGV);

    

            # check if backup application is using this resource

            #if (the backup application is not running on $rsrc) {

                    # allow the DR to continue

            #        exit (0);

            #}

            #

            # If RCM_ENV_FORCE is FALSE deny the operation.

            # If RCM_ENV_FORCE is TRUE kill the backup application in order

            # to allow the DR operation to proceed

            #

            if ($ENV{RCM_ENV_FORCE} eq 'TRUE') {

                 if ($cmd eq 'preremove') {

                         # kill the tape backup application

                 }

                 exit (0);

            } else {

               #

               # indicate that the tape drive can not be released

               # since the device is being used for backup by the

               # tape backup application

               #

               print "rcm_failure_reason=tape backup in progress pid=...\n"

;

               exit (3);

            }

    }