HP ProLiant DL380G5-WSS 3.7.0 HP StorageWorks HP Scalable NAS File Serving Sof - Page 159

Create a semaphore To create a PSFS command-line semaphore, use this command: $ psfssema -i This command creates the PSFS command-line semaphore file and the supplemental file if either file does not already exist. It then initializes the files to create the PSFS command-line semaphore. must be a path on a PSFS filesystem. Lock a semaphore To lock a PSFS command-line semaphore, use this command: $ psfssema -g This command locks the PSFS command-line semaphore associated with , which is the name of a semaphore file created by psfssema -i. If the semaphore is already locked by another node in the cluster, the calling process blocks until the semaphore becomes available. An error is returned if does not exist or has not been initialized by psfssema -i, or if does not exist. Unlock a semaphore To unlock a PSFS command-line semaphore, use this command: $ psfssema -r The command unlocks the PSFS command-line semaphore associated with , which is a semaphore file created by psfssema -i. If other nodes are blocked on the semaphore when psfssema-r is called, one of the blocked psfssema -g processes will return successfully. Delete a semaphore To delete a PSFS command-line semaphore, use this command: $ psfssema -d HP Scalable NAS File Serving Software administration guide 159