> I would never have any confidence that the replication is solid > enough to use the slave server for backup purposes.
I agree completely there. That's the other reason I like filesystem snapshots is that it allows you to take a backup from the master relatively painlessly. -----Original Message----- From: Robinson, Eric [mailto:eric.robin...@psmnv.com] Sent: Friday, December 04, 2009 1:24 PM To: Gavin Towey; Tom Worster; mysql@lists.mysql.com Subject: RE: Here's an Idea for Re-Syncing Master and Slave During Production Hours without Interrupting Users (Much) > I would say that it's very important to know why data > is getting out of sync between your master and slave. Ultimately, I agree. But since it's a canned application, getting to that point might be hard, and once it is resolved, new issues might arise. I would never have any confidence that the replication is solid enough to use the slave server for backup purposes. (Which, by the way, is the real reason I'm doing this. In the middle of the night, when there are few users on the system, I want to backup the slave, but first I want to make sure I have a 100% reliable copy of the data.) > There are ways to resync data that don't involve all > this as well: Maatkit has some tools I've looked with great interest at Maatkit, but their tools are replete with warnings about dangers, bugs, and crashes. They certainly do not inspire confidence. -- Eric Robinson Disclaimer - December 4, 2009 This email and any files transmitted with it are confidential and intended solely for Gavin Towey,Tom Worster,my...@lists.mysql.com. If you are not the named addressee you should not disseminate, distribute, copy or alter this email. Any views or opinions presented in this email are solely those of the author and might not represent those of . Warning: Although has taken reasonable precautions to ensure no viruses are present in this email, the company cannot accept responsibility for any loss or damage arising from the use of this email or attachments. This disclaimer was added by Policy Patrol: http://www.policypatrol.com/ This message contains confidential information and is intended only for the individual named. If you are not the named addressee, you are notified that reviewing, disseminating, disclosing, copying or distributing this e-mail is strictly prohibited. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any loss or damage caused by viruses or errors or omissions in the contents of this message, which arise as a result of e-mail transmission. [FriendFinder Networks, Inc., 220 Humbolt court, Sunnyvale, CA 94089, USA, FriendFinder.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/mysql?unsub=arch...@jab.org
