Dynamic Reconfiguration User's Guide 2.5.1

3.4.7 Run Time Environment

• SIGKILL signal is sent to all connection scripts if the user issues the cancel command. On receipt of the SIGKILL signal, the connection script must also terminate all of its child processes.
• If the user issues the cancel command, it is possible for the connection script to be called with the canceladd or cancelremove options before the preadd or preremove script is killed. Such race conditions must be considered in the connection script.
• Except I/O Multi-path devices, all other devices must not be opened for the DR detach operation to work.