dump/restore, how to reduce slice size
johnl at iecc.com
Fri Sep 30 14:15:25 UTC 2011
>>> # df -h
>>> Filesystem Size Used Avail Capacity Mounted on
>>> /dev/ad4s1a 2G 206M 1.6G 11% /
>>> devfs 1.0k 1.0k 0B 100% /dev
>>> /dev/ad4s1e 3.9G 13M 3.6G 0% /tmp
>>> /dev/ad4s1f 40G 25G 12G 67% /usr
>>> /dev/ad4s1d 31G 3.6G 24G 13% /var
>>> procfs 4.0k 4.0k 0B 100% /proc
>>> /dev/ad2s1f 39G 25G 10G 71% /mnt
>>> devfs 1.0k 1.0k 0B 100% /var/named/dev
>>> as you can see /dev/ad4s1f is 40G and /dev/ad2s1f is 39G
>>> but on ad4s1f only 25G used.
>>> How can I dump /dev/ad4s1f and restore it on /dev/ad2s1f?
You can't. ad4s1f has 25G of files, but ad2s1f only has 10G of
free space. You need a bigger disk.
If you're just moving things around, I agree that a $100 USB
disk is the best way to store backups temporarily.
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