HAD diagnostics

When the VCS engine HAD dumps core, the core is written to the directory $VCS_DIAG/diag/had. The default value for variable $VCS_DIAG is /var/VRTSvcs/.

When HAD core dumps, review the contents of the $VCS_DIAG/diag/had directory. See the following logs for more information:

VCS runs the script /opt/VRTSvcs/bin/vcs_diag to collect diagnostic information when HAD and GAB encounter heartbeat problems. The diagnostic information is stored in the $VCS_DIAG/diag/had directory.

When HAD starts, it renames the directory to had.timestamp, where timestamp represents the time at which the directory was renamed.