[TAG] 2-cent Tip: Copying a partition

[Kapil Hari Paranjape]

Hello,

Here is a way to copy a partition which is mounted *without* copying
all the other partitions that are under it.

Let /patha be the mountpoint of the partition from which you want to
copy (it could even be the root path /).

Let /dev/new be the device to which you want to copy the data.

	mkdir /var/tmp/src
	# The bind mount is the crucial thing!
	mount --bind /patha /var/tmp/src
	mkdir /var/tmp/target
	mount /dev/new /var/tmp/target
	cd /var/tmp/src
	# I find this a neat way to copy all files
	# and permissions
	find . | cpio -pdum /var/tmp/target
	umount /dev/new
	umount /var/tmp/src
	rmdir /var/tmp/{src,target}

And you are done!
I hope the above commands are self-explanatory. If not, then I can
explain further.

Kapil.
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