fP and data integrity...how to maintain on non-quiescent systems?

[Kenneth Brody]

Quoting Bill Campbell (Sat, 17 Feb 2007 19:11:20 -0800):
[... Backing up an active database ...]
> MySQL handles this by (a) making a snapshot of the database, and noting
> the offset within the current logfile.  The secondary system is created
> from that snapshot, then it's given the offset in the remote log file,
> effectively does a seek into that file, and proceeds to continuously
> update its databases, keeping track of its current position in the log
> processing.
[...]

How does MySQL handle updates while taking the snapshot?  How long
does it take to make the snapshot on such a large set of tables?

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