HP Clustered Gateway Device Management Software manual Psfssuspend suspend a Psfs filesystem

Chapter 1: Matrix Server Commands 44

The options are:

-i<filename>

Create the PSFS command-line semaphore file <filename> and the supplemental file <filename.pid> if either file does not already exist. It then initializes the files to create the PSFS command-line semaphore. <filename> must be a path on a PSFS filesystem.

-g<filename>

Lock the PSFS command-line semaphore associated with <filename>, which is the name of a semaphore file created by psfssema -i. If the semaphore is already locked by another node in the matrix, the calling process blocks until the semaphore becomes available.

An error is returned if <filename> does not exist or has not been initialized by psfssema -i, or if <filename.pid> does not exist.

-r<filename>

Unlock the PSFS command-line semaphore associated with <filename>, which is the name of a semaphore file created by psfssema -i. If other nodes are blocked on the semaphore when psfssema-ris called, one of the blocked psfssema -gprocesses will return successfully.

-d<filename>

Delete the PSFS command-line semaphore associated with <filename>, which is the name of a semaphore file created by psfssema -i.It also deletes <filename> and <filename.pid>.

psfssuspend – suspend a PSFS filesystem

Synopsis

/opt/polyserve/tools/psfssuspend <directory_mountpoint>

Description

The psfssuspend utility suspends a PSFS filesystem in a stable, coherent, and unchanging state. While the filesystem is in this state, you can copy it for backup and/or archival purposes. When copying directly from a suspended device, be sure to use the raw device (/dev/rpsd/...) to ensure that all blocks copied are up-to-date.The filesystem is essentially unusable while it is suspended; however, applications that can tolerate extended waits for I/O do not need to be terminated.

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