[pve-devel] [PATCH ha-manager v2 0/5] watchdog: sync log to disk before and after expiring

[Maximiliano Sandoval]

Without a clear-cut message in the log, it is very hard to provide a definitive
answer to whether a host fenced or not. In some cases the journal on the disk
can be missing up to 2 minutes since its last logged entry and the time where
another node detects the corosync link is down, with such a gap, the fenced node
would not even record that it lost conenction and it is not possible to
fully-determine if the node was fenced or not.

This series:
 - adds a second warning 10 seconds before the watchdog expires
 - syncs the journal to disk after the warning was issued
 - syncs the journal to disk after the watchdog expires

Differences from v1:
 - Define the warning cuttoff based on the 60 second timeout
 - Change log messages and constant names
 - When not immediately fencing, run journal sync in double fork

Maximiliano Sandoval (5):
  watchdog-mux: Use #define for 60s timeout
  watchdog-mux: split if block in two if blocks
  watchdog-mux: warn when about to expire
  watchdog-mux: sync journal after logging expiration message
  watchdog-mux: sync journal right after fencing warning

 src/watchdog-mux.c | 52 +++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 47 insertions(+), 5 deletions(-)

-- 
2.39.5