cloning with nfs?
ean at hedron.org
Wed Jun 22 14:49:02 GMT 2005
On June 22, 2005 02:40 am, Dick Hoogendijk wrote:
> Yesterday I ruined my partition table on one of my machines.
> Luckely this machine was almost an exact copy of another that still is
> running fine.
> So, I can follow the procedure of copying one disk to another (following
> the handbook). But this requires a fysical removal / action on the
> machines and harddisks witch I don't want to do if not needed.
> I did a minimal install on the crashed machine (#B)
> If disk'cloning' can be done through NFS that'll be the way to go for
> Will it be enough to export /var /usr /tmp and / (#B) to mountpoints on
> machine #A and then follow the 'normal' dump/restore procedure mentioned
> in the handbook?
> Or are there side_effects and will fysical placement of the 'new' drive
> in machine #A be the right way to do it?
I don't think restore works reliably on NFS mounted disks but I have copied
disks using dump/restore through ssh.
I would not do a blind dump/restore of / or /var. Those filesystems can
contain some installation specific information. I think the only thing out
of / that you need to copy would be /etc and possibly /boot if you have a
custom kernel. Just remember that a kernel install is not as simple as
You don't need to copy /tmp since it should not contain any information that
is needed to survive a reboot. Just reboot after you restore.
As for /usr you should be able to dump/restore that one. If you have
additional packages installed, you will also want to copy /var/db/pkg and
Likewise, if the system is a mail server, you will want to copy over the
appropriate directory structure (typically /var/spool) but you need to make
sure you don't copy over any of the spool files or your users are going to
get 2 copies of the same message delivered.
> Thanks for any advice.
E-Mail: ean AT hedron DOT org
I am currently looking for work. If you need competent system/network
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