NAME

evms_deactivate - Deactivate EVMS volumes

SYNOPSIS

evms_deactivate [no options]

DESCRIPTION

The evms_deactivate command tells the Device-Mapper driver to deactivate all active devices. evms_deactivate can be run at system shutdown or reboot time to cleanly deactivate EVMS volumes. Running the command is not a strict requirement for EVMS to operate properly; evms_deactivate is simply a convenient complement to the evms_activate command. evms_deactivate is also a useful tool that can be used during development and testing of EVMS.

NOTES

When a Device-Mapper device is deactivated, the kernel does not actually remove it from memory unless the device has no active users. Thus, if a device is mounted when evms_deactivate is run, the device will not actually be deactivated until it is unmounted (even though evms_deactivate will complete successfully). This behavior is analogous to how files are deleted from a file system, where the storage space for the file is not freed until the usage count for the file goes to zero.

The evms_deactivate only deactivates Device-Mapper devices. Software-RAID devices are handled by the MD driver and will be automatically deactivated a reboot time by the kernel. Thus, running this command on a running system that has a combination of Device-Mapper and Software-RAID devices may produce unexpected results.

SEE ALSO

evms(8), evms_activate(8), evms_gather_info(8), http://evms.sourceforge.net/

AUTHOR

Kevin Corry