ubik: log when a server is marked down, and why
In order to better manage voting and recovery, each ubik server tracks
(in array ubik_servers) which of its fellow quorum members are 'up' or
not. However, ubik currently logs only when a server is "back up"; that
is, ubik_server->up transitions from 0 to 1.
Add new log messages to identify the time and reason when a server is
"marked down" (i.e., ubik_server->up transitions from 1 to 0).
Also modify two existing messages to have consistent wording with the
new "marked down" messages. Also change them to ViceLog (log level
0) so they will always be logged.
Change-Id: I29ee93e96cb7b28b943171d1477671c540a10d78
Reviewed-on: https://gerrit.openafs.org/12616
Tested-by: BuildBot <buildbot@rampaginggeek.com>
Reviewed-by: Benjamin Kaduk <kaduk@mit.edu>