Why does the client scheduler fail to start at bootup of RedHat Linux 6 even though the following line is added in /etc/inittab?
tsm::once:/usr/bin/dsmc sched > /dev/null 2>&1
Starting with Red Hat Enterprise Linux 6, init from the sysvinit package has been replaced with Upstart. The /etc/inittab file is deprecated, and is now used only for setting up the default runlevel via the initdefault line. Other configuration is done via upstart jobs in the /etc/init directory.
Instead of starting the scheduler service by "/usr/bin/dsmc sched" command, it is recommended to use Client Accepter Daemon (CAD) to run the client scheduler. Beginning with version 6.3.0, Tivoli Storage Manager client installs a script, /etc/init.d/dsmcad, which can be used to start/stop/restart the CAD daemon. One can also make it start automatically after system restart. Please refer to IBM Tivoli Storage Manager for UNIX and Linux Backup-Archive Clients Installation and User's Guid - http://pic.dhe.ibm.com/infocenter/tsminfo/v6r3/topic/com.ibm.itsm.client.doc/c_sched_autotasks.html
As for the difference between the client-acceptor scheduler services and the traditional scheduler services, please refer to http://pic.dhe.ibm.com/infocenter/tsminfo/v6r3/topic/com.ibm.itsm.client.doc/c_sched_cadvstrad.html.
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