Merge lp:~percona-toolkit-dev/percona-toolkit/fix-risks-docs-bug-949653 into lp:percona-toolkit/2.1

[Daniel Nichter]

[Daniel Nichter (daniel-nichter)]

review: Approve

=== modified file 'bin/pt-table-checksum'
--- bin/pt-table-checksum	2012-03-07 23:41:54 +0000
+++ bin/pt-table-checksum	2012-03-30 16:08:37 +0000
@@ -7451,6 +7451,11 @@
 cause replication to fail when unsafe replication options are used.  In short,
 it is safe by default, but it permits you to turn off its safety checks.
 
+The tool presumes that schemas and tables are identical on the master and
+all replicas.  Replication will break if, for example, a replica does not
+have a schema that exists on the master (and that schema is checksummed),
+or if the structure of a table on a replica is different than on the master.
+
 At the time of this release, we know of no bugs that could cause harm to
 users.