I have been receiving database Integrity check report with text "command failed" for few weeks, i found these lines in mysql_error.log:
InnoDB: Database page corruption on disk or a failed
InnoDB: file read of page 131.
Zimbra server still works but with some weird thing can happen like user cannot delete message or one message can be received several times or shared folder is unavailable to imap client.
My zimbra version is zcs-6.0.6_GA_2324 and i wonder if instructions of Mysql Crash Recovery - Zimbra :: Wiki page are applicable in my case