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Martin Schwenke d7424f97c9 ctdb-scripts: Add exportfs cache to NFS Linux kernel callout 
exportfs can hang when, for example, DNS is flakey.  Given that
exports don't change much, it makes sense to cache them.

Don't try to add error handling when exportfs fails but do print a
warning.  Proper error handling can be added separately.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2015-12-04 09:17:17 +01:00
..
events.d ctdb-scripts: Drop creation of database directories 2015-11-20 04:40:26 +01:00
nfs-checks.d ctdb-scripts: Move 60.nfs Ganesha callout to doc/examples/ 2015-07-21 07:54:09 +02:00
ctdb-crash-cleanup.sh scripts: drop_all_public_ips() now prints messages to stdout, not log 2013-06-20 13:01:09 +10:00
ctdb.init Add missing $remote_fs LSB dependency 2013-10-24 16:54:08 +11:00
ctdb.service initscript: Update systemd configuration to put PID file in /run/ctdb 2013-10-25 12:06:07 +11:00
ctdb.sudoers ctdb-scripts: Update important installed files to use build-time defaults 2015-09-15 08:56:21 +02:00
ctdb.sysconfig ctdb-scripts: Add new configuration variable CTDB_MAX_OPEN_FILES 2015-04-30 06:45:26 +02:00
ctdbd_wrapper ctdb-scripts: Fix CTDB_DBDIR=tmpfs support 2015-11-18 11:51:54 +01:00
debug_locks.sh ctdb-scripts: Lock debugging should print kernel stack for process in D state 2015-10-16 13:35:10 +02:00
debug-hung-script.sh ctdb-scripts: Move remaining state files into CTDB_SCRIPT_VARDIR 2015-09-15 08:56:21 +02:00
functions ctdb-scripts: Fix CTDB_DBDIR=tmpfs support 2015-11-18 11:51:54 +01:00
gcore_trace.sh common: Debug ctdb_addr_to_str() using new function ctdb_external_trace() 2012-10-18 20:05:42 +11:00
nfs-linux-kernel-callout ctdb-scripts: Add exportfs cache to NFS Linux kernel callout 2015-12-04 09:17:17 +01:00
notify.d.README scripts: Rework notify.sh to use notify.d/ directory 2013-05-23 16:18:23 +10:00
notify.sh scripts: Rework notify.sh to use notify.d/ directory 2013-05-23 16:18:23 +10:00
README Eventscript support - Remove unused interface_modify.sh 2012-03-22 15:30:27 +11:00
statd-callout Fix various spelling errors 2015-11-06 13:43:45 +01:00

README 

This directory contains run-time support scripts for CTDB.

Selected highlights:

  ctdb.init

    An initscript for starting ctdbd at boot time.

  events.d/

    Eventscripts.  See events.d/README for more details.

  functions

    Support functions, sourced by eventscripts and other scripts.

  statd-callout

    rpc.statd high-availability callout to support lock migration on
    failover.

Notes:

* All of these scripts are written in POSIX Bourne shell.  Please
  avoid bash-isms, including the use of "local" variables (which are
  not available in POSIX shell).

* Do not use absolute paths for commands.  Unit tests attempt to
  replace many commands with stubs and can not do this if commands are
  specified with absolute paths.  The functions file controls $PATH so
  absolute paths should not be required.