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Martin Schwenke 517f09eb6f ctdb-scripts: Drop assumption that there are VLANs with no '@' 
VLAN configuration on Linux often uses a convention of naming a VLAN
on <iface> with VLAN ID <tag> as <iface>.<tag>.  To be able to monitor
the underlying interface, the original 10.interface code naively
simply stripped off the '.' and everything after (i.e. ".*", as a glob
pattern).

Some users do not use the above convention.  A VLAN can be named
without including the underlying interface, but still with a
tag (e.g. vlan<tag> - the word "vlan" following by the tag) or, more
generally, perhaps without a tag (e.g. <vlan> - an arbitrary name).
The ip(8) command lists a VLAN as <vlan>@<iface>.  The underlying
interface can be found by stripping everything up to and including an
'@' (i.e. "*@").

Commit bc71251433 added support for
stripping "*@".  However, on suspicion, it kept support for the case
where there is no '@', falling back to stripping ".*".  If ip(8) ever
did this then it was a long time ago - it has been printing a format
including '@' since at least 2004.

Stripping ".*" interferes with interesting administrative decisions,
like having '.' in interface names.

So, drop the fallback to stripping ".*" because it appears to be
unnecessary and can cause inconvenience.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>
2022-09-16 03:36:32 +00:00
..
events ctdb-scripts: Avoid ShellCheck warning SC2295 2022-07-22 16:09:31 +00:00
nfs-checks.d ctdb-scripts: Stop/start mount/rquotad/status via NFS call-out 2019-03-31 10:45:20 +00:00
ctdb-crash-cleanup.sh ctdb-scripts: Avoid ShellCheck warning SC2164 2022-07-22 06:38:32 +00:00
ctdb.conf ctdb-config: [cluster] recovery lock -> [cluster] cluster lock 2022-01-17 10:21:33 +00:00
ctdb.init ctdb-scripts: Drop uses of ctdbd_wrapper 2022-04-06 06:34:37 +00:00
ctdb.sudoers ctdb-scripts: Update important installed files to use build-time defaults 2015-09-15 08:56:21 +02:00
ctdb.sysconfig ctdb-config: Drop CTDB_STARTUP_TIMEOUT 2022-04-06 06:34:37 +00:00
ctdb.tunables ctdb-scripts: Tunables are now loaded from ctdb.tunables 2018-03-28 02:57:21 +02:00
debug_locks.sh ctdb-scripts: Avoid ShellCheck warning SC2164 2022-07-22 06:38:32 +00:00
debug-hung-script.sh ctdb-scripts: Avoid ShellCheck warning SC2164 2022-07-22 06:38:32 +00:00
functions ctdb-scripts: Drop assumption that there are VLANs with no '@' 2022-09-16 03:36:32 +00:00
nfs-linux-kernel-callout ctdb-scripts: Avoid ShellCheck warning SC2162 2022-06-24 09:49:33 +00:00
notification.README ctdb-scripts: Change directory for notifications to events/notification 2018-06-05 17:47:26 +02:00
notify.sh ctdb-scripts: Change directory for notifications to events/notification 2018-06-05 17:47:26 +02:00
README ctdb-scripts: Move event scripts to events/legacy/ directory 2018-06-05 17:47:26 +02:00
script.options ctdb-scripts: Drop event script CTDB_MANAGED_<service> variables 2018-07-11 11:48:39 +02:00
statd-callout ctdb-scripts: Use "git config" as last resort to parse nfs.conf 2022-07-22 16:09:31 +00:00

README 

This directory contains run-time support scripts for CTDB.

Selected highlights:

  ctdb.init

    An initscript for starting ctdbd at boot time.

  events/

    Eventscripts.  See events/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.