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* Message by -Joao Miguel Ferreira- from Sun 2008-03-30:
=20
> we are using rsync to produce a replica of our filesystem.
>=20
> it's very important for us to be sure that the files replicated on the
> remote backup host are left in a consistent state as we may need to boot
> services from those files (configs, logs, etc)!
>=20
> right now we use a 'greedy approach'... we stop all important services
> (dhcpd, squid, sendmail, etc) just to minimize the possibility of copying=

to
> the backup a file that was being written.

=20
[...]
> We would really like to leave all those important services up but we are
> really affraid of producing a corrupted replica...


Use filesystem snapshots.

Linux supports them via LVM.=20
Solaris and FreeBSD offer them too.


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