DMEVENTD(8) System Manager's Manual DMEVENTD(8)NAME
dmeventd - Device-mapper event daemon
SYNOPSIS
dmeventd [-d [-d [-d]]] [-f] [-h] [-R] [-V] [-?]
DESCRIPTION
dmeventd is the event monitoring daemon for device-mapper devices. Library plugins can register and carry out actions triggered when par-
ticular events occur.
LVM PLUGINS
Mirror Attempts to handle device failure automatically. See lvm.conf(5).
Raid Attempts to handle device failure automatically. See lvm.conf(5).
Snapshot
Monitors how full a snapshot is becoming and emits a warning to syslog when it exceeds 80% full. The warning is repeated when 85%,
90% and 95% of the snapshot is filled. See lvm.conf(5).
Thin Monitors how full a thin pool is becoming and emits a warning to syslog when it exceeds 80% full. The warning is repeated when 85%,
90% and 95% of the thin pool is filled. See lvm.conf(5).
OPTIONS -d Repeat from 1 to 3 times (-d, -dd, -ddd) to increase the detail of debug messages sent to syslog. Each extra d adds more debugging
information.
-f Don't fork, run in the foreground.
-h, -? Show help information.
-R Replace a running dmeventd instance. The running dmeventd must be version 2.02.77 or newer. The new dmeventd instance will obtain a
list of devices and events to monitor from the currently running daemon.
-V Show version of dmeventd.
SEE ALSO lvm(8), lvm.conf(5)Red Hat Inc DM TOOLS 2.02.95(2) (2012-03-06) DMEVENTD(8)
Check Out this Related Man Page
DMEVENT_TOOL(8)DMEVENT_TOOL(8)NAME
dmevent_tool - A utility used to load a DSO into dmeventd and (un)register devices with it for monitoring
SYNOPSIS
dmevent_tool -[Vhmru] {RAID device name} {DSO Name}
DESCRIPTION
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.
OPTIONS -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 libdmraid-events.so
-u Unregister a device with dmeventd
Syntax: dmevent_tool -u <device name> [<path to DSO library>]
Example: dmevent_tool -u isw_abcdefgh_Volume0
EXAMPLES
dmevent_tool -m is used to display all of the actively monitored devices
dmevent_tool -m
Device Name: isw_defeaigdde_Volume0_dmraid00
Registered DSO: libdmraid-events.so
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 libdmraid-events.so
dmevent_tool -u is used to unregister a volume group from dmeventd
dmevent_tool -u isw_defeaigdde_Volume0_dmraid00
DIAGNOSTICS
dmevent_tool returns an exit code of 0 for success or 1 for error.
AUTHOR
Brian Wood <brian.j.wood@intel.com>
Brian Wood 1.0.0.rc3 DMEVENT_TOOL(8)
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