gmirror existing installation?
olli at lurza.secnetix.de
Fri Jan 26 19:04:47 UTC 2007
R. B. Riddick wrote:
> Oliver Fromme wrote:
> > Not really much more. It's true that you have to copy over
> > your files, but the computer does all that work itself.
> > You only have to type one command, then spend your time
> > doing something else. You don't have to watch it during
> > the copying. (You don't have to watch the mirror being
> > synchronized either, which has to be done anyhow and takes
> > much longer, probably.)
> The service interruption is higher, because copying the system should
> be done with a read-only root-fs...
That depends on your services. I have done that procedure
several times without shuting down services.
You can also copy over your stuff once while services are
running, then stop the services (and remount red-only if
you think it's necessary) and perform a final sync that
will transfer only the files that have changed [*].
That will be pretty quick, and the downtime will be short.
> Both methods need a reboot in order to change the root fs...
That's true. At some point you'll have to switch your
root FS to gm0 ... That's not avoidable.
> It is always better to design the system before it is installed... :-)
Very true. :-)
[*] E.g. you can use cpdup for that purposes, from
ports/sysutils/cpdup. It's fast and easy to use.
Oliver Fromme, secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing b. M.
Handelsregister: Registergericht Muenchen, HRA 74606, USt-Id: DE204219783
Any opinions expressed in this message are personal to the author and may
not necessarily reflect the opinions of secnetix GmbH & Co KG in any way.
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