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From:David Sparks Date:June 22 2009 11:42pm
Subject:Re: Anyone using LVM for backing up?
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Little, Timothy wrote:
> We have a 20 gig db (that includes the MYIs and MYDs and FRMs).
> 
> We are wondering how long LVM snapshots take.. in that how long might
> the DB be read-locked?  Do we have to read-lock it and flush tables?

Take a look at mylvmbackup which takes care of flushing tables, creating and
destroying the snapshot, etc:

http://www.lenzg.net/mylvmbackup/

Expect a serious performance hit while the lvm snapshot is active.

ds

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