>You can do snapshots in FreeBSD 5.x with UFS2 as well but that (
>nor XFS snapshots ) will let you backup with the database server
>running. Just because you will get the file exactly as it was at
>a particular instant does not mean that the postmaster did not
>still have some some data that was not flushed to disk yet.
>
>
Ahh... isn't that what fsync is for?
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