Until now, the argument to -v and vlog/set has had to take the form
"module:facility:level". I can never remember the required order, so this
commit switches to allowing any order.
Signed-off-by: Ben Pfaff <blp@nicira.com>
Until now, "emer" has effectively been "off" because no messages were ever
logged at "emer" level. Justin points out that it is useful to use "emer"
for messages that indicate a fatal error. This commit makes that change
and adds a new "off" level to really turn off all logging to a facility.
It is inconvenient to type the whole path to the Unix daemon socket when
using ovs-appctl. Allow the name of the daemon to be used instead when
a pidfile exists in the default location, and contact ovs-vswitchd by
default.
Also, the various options for manipulating vlog were invented before the
general-purpose command mechanism existed. Get rid of all of the action
options in favor of just specifying the command to be executed as
non-option arguments.
Finally, there simply wasn't much value in allowing multiple targets or
options to be specified; these variations were never used in practice. So
simplify the interface by making it one target, one action per invocation.
Also, make ovs-vsctl use the same syntax for its --target option.
Based on work by Justin Pettit.
