J. Roeleveld <jo...@antarean.org> [17-02-05 10:04]:
> On Sunday, February 5, 2017 9:46:53 AM CET meino.cra...@gmx.de wrote:
> > J. Roeleveld <jo...@antarean.org> [17-02-05 08:44]:
> > > On February 5, 2017 6:26:27 AM GMT+01:00, meino.cra...@gmx.de wrote:
> > > >Hi,
> > > >
> > > >since my old Gentoo installation seems to be screwed up (regarding
> > > >the update process) beyond repair I decided to install a new one
> > > >instead of waiting for help.
> > > >
> > > >I already made space at a certain of my harddisk and installed the
> > > >stage3 there.
> > > >Chrooting is one of the first steps to check, whether what I have
> > > >done so is valid.
> > > >
> > > >But before deleting the old root and install the new one at its
> > > >place I would like to do a atmost identical boot into the new
> > > >root.
> > > >
> > > >As far as I know the kernel only allows to boot into a partition
> > > >(instead of a directory on a partition containing the root
> > > >installation) and I am still using devices to boot from instead
> > > >of GPT.
> > > >
> > > >Is there any neat trick to do a real boot into the new root via
> > > >the normal boot process (grub2) nevertheless ?
> > > >
> > > >Cheers
> > > >Meino
> > > 
> > > If I understand correctly. The answer is no. (Unless you write some clever
> > > initramfs)
> > > 
> > > Afaik, the kernel takes the entire partition and mounts it at '/'. If you
> > > want it to use a directory (which would then be at '/newinstall') you
> > > need to get the kernel to chroot into that directory and run init in
> > > there.
> > > 
> > > Only option I see is to use an extra disk. Maybe a USB drive and use that.
> > > 
> > > --
> > > Joost
> > 
> > Hi Joost,
> > 
> > thanks fpr your posting! :)
> > 
> > Ok...another USB drive mau lay around here...will see...
> > Just two quick questions:
> > 
> > Is this ok, to preserve as much as possible of the
> > settings/attributes/whatever of the files or do you anything better
> > and quickier than this:
> > (cd <sourcedir>/. ; tar cf - . ) | ( cd <targetdir>/. ; tar xvpsf - )
> > ?
> 
> Don't forget to add the permissions on the source side:
> 
> tar --xattrs -cvpf . 
> And maybe also add "--xattrs" on the target side.
> 
> Other options:
> # rsync (not fully certain about options)
> # cd <target> ; cp -a <source> .
> 
> I never did any timing, but logic tells me using the "cp" option is quicker 
> (as it is all on the same system)
> 
> --
> Joost
> 
> 

THANKS! for the correction of the commandline, Joost!!!

While copying I am always on the same system ... it is just another
subdirectory from the copuing process's perspective (or I miss
the point here totally...still doing below my normal coffee level
currentlu ;)

I think rsync becomes speedy for updates...only...?

Cheers
Meino







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