On Feb 15, 2006, at 2:40 PM, Steve Quinn wrote:
--- Joe Auty wrote:
Thanks Steve, but this is exactly the same script I've been using all
along, while in Single User Mode.
However, could you explain the zeroing of blocks, and what its
purpose is for? Does this solve the problem of space being lost when
cloning a disk to a larger disk?
Hi Joe
Sorry, you mentioned Freesbie and I assumed you had not used dump
under your FreeBSD install
Now that I think about it, I was getting errors like yours when I
was first learning this script
I remember having to adjust it to taste
Have a look at your fstab (cat /etc/fstab) and ensure the scripts
references to your FreeBSD
slices match your system.
In the script I sent you, my clone destination disk was ad2 so you
will need to look at that as
well
Don't worry Joe, you are very very close
Regarding zeroing empty or unused blocks, have a look at this
http://www.digitalissues.co.uk/html/os/misc/partimage.html#22
Regarding space lost cloning to a larger disk, zeroing unused
blocks wont help that. Imagine your
10GB FreeBSD hard disk is cloned with G4U to a 20GB hard disk. It
will probably work great but
your 20GB disk is only half full. You will have to use growfs to
expand a slice or create a new
partition to reclaim the empty space. Sorry, I have not tried this
yet and have no experience.
In cloning to a bigger disk, I prefer the dump/restore script
method as I get to fully utilize the
larger disk capacity
It sort of helps, but sort of doesn't at the same time. I've tried
the dump command from the script using the correct slices, and still
had that kernel panic. I figured that using the Freesbie CD might be
a way of testing whether my install on my master/source drive was
somehow messed up, but I haven't gone very far with that (dump
reports "unsupported file system" errors).
I've also looked at growfs, but I'm not entirely sure how to handle
the prequisite to using it which is using bsdlabel. It seems that
running bsdlabel within /stand/sysinstall doesn't recognize the free
space, so I can't create a new partition map that reflects this free
space. I'll keep working at it though...
Thanks for your help!
-----------
Joe Auty
NetMusician: web publishing software for musicians
http://www.netmusician.org
[EMAIL PROTECTED]
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