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config: new option dmeventd/thin_command

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This setting will allowing configuring which command gets executed
when thin-pool fullness goes from 50%..100%
This commit is contained in:
Zdenek Kabelac 2017-01-18 09:54:32 +01:00
parent ee754500db
commit 04a9cad499
4 changed files with 16 additions and 0 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.169 - Version 2.02.169 -
===================================== =====================================
Introduce new dmeventd/thin_command configurable setting.
Use new default units 'r' for displaying sizes. Use new default units 'r' for displaying sizes.
Also unmount mount point on top of MD device if using blkdeactivate -u. Also unmount mount point on top of MD device if using blkdeactivate -u.
Restore check preventing resize of cache type volumes (2.02.158). Restore check preventing resize of cache type volumes (2.02.158).

8
conf/example.conf.in
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@ -2049,6 +2049,14 @@ dmeventd {
# warning is repeated when 85%, 90% and 95% of the pool is filled. # warning is repeated when 85%, 90% and 95% of the pool is filled.
thin_library = "libdevmapper-event-lvm2thin.so" thin_library = "libdevmapper-event-lvm2thin.so"
# Configuration option dmeventd/thin_command.
# The plugin runs command with each 5% increment when thin-pool data volume
# or metadata volume gets above 50%.
# Command which starts with 'lvm ' prefix is internal lvm command.
# You can write your own handler to customise behaviour in more details.
# This configuration option has an automatic default value.
# thin_command = "lvm lvextend --use-policies"
# Configuration option dmeventd/executable. # Configuration option dmeventd/executable.
# The full path to the dmeventd binary. # The full path to the dmeventd binary.
# This configuration option has an automatic default value. # This configuration option has an automatic default value.

6
lib/config/config_settings.h
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@ -1859,6 +1859,12 @@ cfg(dmeventd_thin_library_CFG, "thin_library", dmeventd_CFG_SECTION, 0, CFG_TYPE
"and emits a warning through syslog when the usage exceeds 80%. The\n" "and emits a warning through syslog when the usage exceeds 80%. The\n"
"warning is repeated when 85%, 90% and 95% of the pool is filled.\n") "warning is repeated when 85%, 90% and 95% of the pool is filled.\n")
cfg(dmeventd_thin_command_CFG, "thin_command", dmeventd_CFG_SECTION, CFG_DEFAULT_COMMENTED, CFG_TYPE_STRING, DEFAULT_DMEVENTD_THIN_COMMAND, vsn(2, 2, 169), NULL, 0, NULL,
"The plugin runs command with each 5% increment when thin-pool data volume\n"
"or metadata volume gets above 50%.\n"
"Command which starts with 'lvm ' prefix is internal lvm command.\n"
"You can write your own handler to customise behaviour in more details.\n")
cfg(dmeventd_executable_CFG, "executable", dmeventd_CFG_SECTION, CFG_DEFAULT_COMMENTED, CFG_TYPE_STRING, DEFAULT_DMEVENTD_PATH, vsn(2, 2, 73), "@DMEVENTD_PATH@", 0, NULL, cfg(dmeventd_executable_CFG, "executable", dmeventd_CFG_SECTION, CFG_DEFAULT_COMMENTED, CFG_TYPE_STRING, DEFAULT_DMEVENTD_PATH, vsn(2, 2, 73), "@DMEVENTD_PATH@", 0, NULL,
"The full path to the dmeventd binary.\n") "The full path to the dmeventd binary.\n")

1
lib/config/defaults.h
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@ -81,6 +81,7 @@
#define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so" #define DEFAULT_DMEVENTD_MIRROR_LIB "libdevmapper-event-lvm2mirror.so"
#define DEFAULT_DMEVENTD_SNAPSHOT_LIB "libdevmapper-event-lvm2snapshot.so" #define DEFAULT_DMEVENTD_SNAPSHOT_LIB "libdevmapper-event-lvm2snapshot.so"
#define DEFAULT_DMEVENTD_THIN_LIB "libdevmapper-event-lvm2thin.so" #define DEFAULT_DMEVENTD_THIN_LIB "libdevmapper-event-lvm2thin.so"
#define DEFAULT_DMEVENTD_THIN_COMMAND "lvm lvextend --use-policies"
#define DEFAULT_DMEVENTD_MONITOR 1 #define DEFAULT_DMEVENTD_MONITOR 1
#define DEFAULT_BACKGROUND_POLLING 1 #define DEFAULT_BACKGROUND_POLLING 1