dmevent_tool - Man Page

A utility used to load a DSO into dmeventd and (un)register devices with it for monitoring


dmevent_tool -[Vhmru] {RAID device name} {DSO Name}


dmevent_tool is a userspace utility used to register/unregister DSOs with the daemon dmeventd.

If used with the -m command line parameter users can display all of the actively dmeventd monitored devices.


-V      Show version of dmevent_tool

-{h/?}  Show this help information

-m[r|u] List all currently active device mapper devices

and their current status with dmeventd
       for registered (-r)/unregistered (-m) devices
           Syntax: dmevent_tool -m[u|r]

-a[r|u] Same as -m, but for devices with UUID only!

Syntax: dmevent_tool -a[u|r]

-r      Register a device with dmeventd

Syntax: dmevent_tool -r <device name> <path to DSO library>
           Example: dmevent_tool -r isw_abcdeh_Volume0

-u      Unregister a device with dmeventd

Syntax: dmevent_tool -u <device name> [<path to DSO library>]
           Example: dmevent_tool -u isw_abcdefgh_Volume0


dmevent_tool -m is used to display all of the actively monitored devices
   dmevent_tool -m
   Device Name: isw_defeaigdde_Volume0_dmraid00
       Registered DSO:         
       UUID:                             isw_defeaigdde_Volume0_dmraid00
       status:                           Active
       major device #:                   253
       minor device #:                   0
       read only device:                 No
       number of recorded kernel events: 0
       SATA drives in this volume group: /dev/sdb /dev/sdc

dmevent_tool -r is used to register a volume group device with dmeventd
   dmevent_tool -r isw_defeaigdde_Volume0_dmraid00

dmevent_tool -u is used to unregister a volume group from dmeventd
   dmevent_tool -u isw_defeaigdde_Volume0_dmraid00


dmevent_tool returns an exit code of 0 for success or 1 for error.


Brian Wood <>

Referenced By

The man page dm_dso_reg_tool(8) is an alias of dmevent_tool(8).

1.0.0.rc3 Brian Wood