Timo,
true but you have to have a consistent FileSystem all the way through the
backup, which may last for more than 1 hour (up to 60GB of data, which
for OpenMail means something like 2.000.000 files!), plus it is not
possible to take a snapshot of several file systems at the same time.
Ciao Mauro
> Hi,
>
> If you use HP vxfs (OnlineJFS) snapshot feature, you need one lvol per
> fs, but you don't have to split your mirroring. Lvol size demand
depends
> on your system activity during the backup.
>
> OM can be suspended for a moment of doing snapshot i.e. about 60 -120
> sec, so users see only their client to freese for a moment.
>
> Timo Heinonen
> ++++++++++++++++
>
>
> > "Mauro M. TINELLI" wrote:
> > >
> > > Werner,
> > >
> > > I backup three OM servers every night (17GB, 42GB and 66GB of
> OMstore).
> > >
> > > On all of them, I:
> > >
> > > - stop the OM services,
> > > - split the mirrored copy of the OM FSs,
> > > - restart the OM services,
> > > - backup incrementally the copy /var/opt/openmail,
> > > /var/opt/openmal/data...
> > >
> > > and
> > >
> > > - finally I merge the FSs again!
> > >
> > > I do use incremental backup. The consistency is garanteed by the
fact
> > > that all the services have been stopped, before the splitting of
the
> FS.
> > > By the way, I was using OmniBack-II before and I moved to ADSM
> because
> > > the "always incremental" policy reduces the backup time.
> > >
> > > It works ... and the restore too!
> > >
> > > Ciao Mauro
> >
> > Ciao Mauro
> >
> > Thanks a lot for your informations. How long have the OpenMail
services
> > to be down (how long are the servers not available)?
> >
> > Thank you for your info
> > Regards
> > Werner Nussbaumer
> Timo Heinonen
> Unix Team Manager Timo.Heinonen AT nmp.nokia DOT com
> Nokia Mobile Phones Tel: +358 10 505 2364
> PL 86 Fax: +358 10 505 2899
> 24101 SALO GSM: +358 40 582 8806
> FINLAND
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
