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Old 12-05-2009, 12:24 PM   #1
Registered: Oct 2008
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Unmounting /home

I want to copy my entire Linux install from a hard disk to a thumbdrive (so I can run my EeePC on flash memory), but I have to leave out /home because it's larger than the thumbdrive can hold and I don't require most of what's in it in the system disk (it'll stay on the hard drive to be accessed as needed).

So I logged in as root, planning to unmount /home (I put it on its own partition) and rsync root on the thumbdrive, but it won't let me unmount saying the device is busy. I tried fuser -u to see what's accessing /dev/sda3, but it returns nothing.

What now?
Old 12-05-2009, 12:32 PM   #2
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Try also:
lsof | grep \/home
If that doesn't help you solve it, you could apply the pragmatic approach:

(1) Remove /home from /etc/fstab.
(2) Reboot.
(3) Login as root.
(4) Rsync to your hearts content.
(5) Undo your changes to /etc/fstab.
(6) Reboot and pretend nothing happened.
Old 12-05-2009, 01:57 PM   #3
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No need to umount /home. Just use the --exclude option to rsync, i.e. --exclude /home

Old 12-05-2009, 05:27 PM   #4
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Oh, perfect. Thanks


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