About network failure

If a network partition occurs, a cluster can "split into two or more separate sub-clusters. When two clusters join as one, VCS designates that one system be ejected. GAB prints diagnostic messages and sends iofence messages to the system being ejected. The system receiving the iofence messages tries to kill the client process. The -k option applied here. If the -j option is used in gabconfig, the system is halted when the iofence message is received.

GAB panics the system on receiving an iofence message on kernel client port and tries to kill only for clients running in user land. The -k option does not work for clients running in the kernel.