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The daemon side of this is mostly the same as the patch I sent out. To select
a timeout period different than the default and to get the timeout period,
I added two library calls, dm_set_event_timeout() and dm_get_event_timeout().
If people are against them, the other option is to tack extra arguments onto
dm_regiser_for_event() and dm_get_registered_device(). I also added a
-t option to dmevent, so people can try out timeouts.
log types. This means the threaded_syslog type is no longer valid. A new
fxn multilog_async is available to toggle between the two modes. If an
app is compiled without pthreads and tries to use async logging, no logging
will occur while async is enabled.
dmeventd has been modified to use the new code
I'm not positive I like the way the async_logger code calls the log fxn,
but it works for now. Suggestions for other ways to do it would be helpful
- multilog_add_type, multilog_del_type, multilog_custom, and
multilog_init_verbose all have different arguments.
- Primary change is that caller only passes in config info, and the
lib keeps track of state internally. No more exporting of
'struct log_data'.
- Custom callers now only get the custom data pointer passed into their
log fxn (that is set with multilog_custom)
- Added basic README that describes libmultilog
# dmevent -l
Also, changed the behaviour of dm_get_registered_device(), so that it doesn't
change the pointer you passed in without freeing the memory on a non-next call,
and doesn't free your pointer without setting it to NULL on a failed next call.
multilog_add_type()/multilog_del_type cycles correctly.
o fixed segfault in multilog_add_type()
o fixed test-multilog.c
o cleaned up libmultilog (list macros, indentation, braces, comments)
- add event_nr to thread_status struct and set appropriately so that the
thread actually waits for an event
- essentially make error_detected return true. Let the DSOs determine
how to interpret the status info
o more tweaks to libmultilog calls - the api isn't set in stone yet, so
don't get too comfortable.
o not sure the dmeventd in device-mapper/dmeventd works - i've been using
the one in lib/event/
o currently both daemons are set to log only to syslog
o changed
int dm_get_next_registered_device(char **dso_name, char **device,
enum event_type *events);
to
int dm_get_registered_device(char **dso_name, char **device,
enum event_type *events, int next)
so that the daemon is able to retrive the next one of the list without
running into locking issues.
o changed dmevent.c to use dm_get_registered_device()
o couldn't test this yet because of the comms issues
(daemon exits in do_process_request())
Improve reporting of node-specific locking errors so you'll get
somthing a little more helpfiul than "host is down" - it will now tell
you /which/ host it thinks is down.
./configure --with-clvmd
wil do this by default. Or you can choose which you want with
./configure --with-clvmd=gulm or
./configure --with-clvmd=cman
When clvmd with both included is run, it will automatically detect the cluster
manager in use.
