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gfs_controld
Langue: en
Version: 363477 (ubuntu - 25/10/10)
Section: 8 (Commandes administrateur)
NAME
gfs_controld - daemon that coordinates gfs mounts and recoverySYNOPSIS
gfs_controld [OPTIONS]DESCRIPTION
GFS lives in the kernel, and the cluster infrastructure (corosync membership and group management) lives in user space. GFS in the kernel needs to adjust/recover for certain cluster events. It's the job of gfs_controld to receive these events and reconfigure gfs as needed. gfs_controld controls and configures gfs through sysfs files that are considered gfs-internal interfaces.Mounting and node failure are the main cluster events that gfs_controld controls. It also manages the assignment of journals to different nodes. mount.gfs2(8) communicates with gfs_controld to join the mount group and receive the necessary options for the kernel mount.
The cman init script usually starts the gfs_controld daemon.
OPTIONS
Command line options override a corresponding setting in cluster.conf.- -D
- Enable debugging to stderr and don't fork.
See also gfs_control dump in gfs_control(8). - -L
- Enable debugging to log file.
See also logging in cluster.conf(5). - -g num
- groupd compatibility mode, 0 off, 1 on.
Default 0. - -w num
- Enable (1) or disable (0) withdraw.
Default 1. - -h
- Print a help message describing available options, then exit.
- -V
- Print program version information, then exit.
Cluster Upgrading
When performing a rolling upgrade from cluster2 to cluster3, the gfs_controld daemon runs in cluster2 compatibility mode and processes posix lock (plock) requests from the dlm to remain compatible with cluster2 nodes. Otherwise, dlm_controld(8) handles plocks.- -p num
- Enable (1) or disable (0) plock code for cluster fs.
Default 1. - -l num
- Limit the rate of plock operations, 0 for no limit.
Default 0. - -o num
- Enable (1) or disable (0) plock ownership.
Default 1. - -t ms
- Plock ownership drop resources time (milliseconds).
Default 10000. - -c num
- Plock ownership drop resources count.
Default 10. - -a ms
- Plock ownership drop resources age (milliseconds).
Default 10000. - -P
- Enable plock debugging messages (can produce excessive output).
FILES
cluster.conf(5) is usually located at /etc/cluster/cluster.conf. It is not read directly. Other cluster components load the contents into memory, and the values are accessed through the libccs library.Configuration options are added to the <gfs_controld /> section of cluster.conf, within the top level <cluster> section.
- enable_withdraw
- Set to 1/0 to enable/disable a response to a withdraw.
<gfs_controld enable_withdraw="1"/>
Cluster Upgrading
See note above about compatibility plock handling during a rolling upgrade. The following options are deprecated, see dlm_controld(8) for the new equivalent options.- enable_plock
- See command line description.
<gfs_controld enable_plock="1"/>
- plock_rate_limit
- See command line description.
<gfs_controld plock_rate_limit="0"/>
- plock_ownership
- See command line description.
<gfs_controld plock_ownership="1"/>
- drop_resources_time
- See command line description.
<gfs_controld drop_resources_time="10000"/>
- drop_resources_count
- See command line description.
<gfs_controld drop_resources_count="10"/>
- drop_resources_age
- See command line description.
<gfs_controld drop_resources_age="10000"/>
- plock_debug
- Enable (1) or disable (0) plock debugging messages (can produce excessive output). Default 0.
<gfs_controld plock_debug="0"/>
SEE ALSO
mount.gfs2(8), gfs_control(8), dlm_controld(8), cman(5), cluster.conf(5)Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre