Merge lp:~percona-toolkit-dev/percona-toolkit/update-relay-log-space-limit-docs-fix-bug-949154 into lp:percona-toolkit/2.0

[Daniel Nichter]

[Daniel Nichter (daniel-nichter)]

review: Approve

=== modified file 'bin/pt-variable-advisor'
--- bin/pt-variable-advisor	2012-03-07 23:41:54 +0000
+++ bin/pt-variable-advisor	2012-03-27 00:04:21 +0000
@@ -3452,8 +3452,11 @@
 
 severity: warn 
 
-Setting relay_log_space_limit is relatively rare, and could cause
-an increased risk of previously unknown bugs in replication.
+Setting relay_log_space_limit can cause replicas to stop fetching binary logs
+from their master immediately. This could increase the risk that your data will
+be lost if the master crashes. If the replicas have encountered a limit on relay
+log space, then it is possible that the latest transactions exist only on the
+master and no replica has retrieved them.
 
 =item slave_net_timeout