On 05/04/2010 00:51, Kacper Kopczyński wrote:
Dnia 2010-04-04, o godz. 21:04:03
Neil Bothwick<n...@digimed.co.uk> napisał(a):
On Sun, 04 Apr 2010 20:35:11 +0100, Kerin Millar wrote:
Whichever way you go about it, ensure that no pseudo-filesystem or
bind mounts are present within "/mnt/oldrootfs" at the time.
Use the -x option with rsync to stop it descending into other
filesystems.
AFAIK
"mount --bind / /somewhere" and rsync'ing /somewhere/ instead of / would
be more useful then "-x" option - stage1,2,3 has static /dev entries
which should also be copied. Since udev mounts it with tmpfs, rsync
with -x would skip those entries (static and from tmpfs).
Well, no, because my response was based on the fact that the duplication
will be carried out from an alternate environment provided by a CD/DVD,
as Meino clearly stated in the original post. Thus, bind mounts,
pseudo-filesystems and chroots need not come into the equation
whatsoever. Indeed, it's the very same concern that you express which
resulted in my recommendation to avoid such shenanigans and keep it
simple. Ergo, just mount the root filesystem - nothing else - and copy
it as-is. Static /dev entries would be copied without issue, as would
everything else. It really couldn't be simpler.
You post hinges on the notion that he would be performing the process
while booted from the system he is duplicating, in which case your
advice would, of course, be entirely sensible. Ergo, he would indeed be
best advised to bind mount / to a temporary directory and use that as
the source for the exact reasons that you mention. I personally would
not recommend doing it under these circumstances but it can certainly be
done (though I'd suggest dropping to runlevel 1 first).
Cheers,
--Kerin
