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I am trying to migrate from a single disk drive system to a double disk drive software raid-1 system that already has a running system on it. Meaning that formatting and having a new installation of ubuntu using raid-1 is NOT an option.

In this process I have to copy the contents from main disk (/dev/sda1) to mounted raid array (/dev/md0).

First Attempt to Copy:

sudo cp -dpRx / /mnt/md1

Second Attempt to Copy:

sudo rsync -avxHAXS --delete --progress / /mnt/md1

Both of them end with warnings. Not sure if they end successfully.

Which command should I use (from the two above or something else like dd) and with which parameters in order to have the md1 raid-array prepared for next reboot?

EDIT:
This is the warning message I got from "cp" command on my first attempt:

cp: cannot stat `/home/george/.gvfs': Permission denied

This is the error message I got from "rsync" command on my second attempt:

rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1070) [sender=3.0.9]
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You need to specify what warnings. –  psusi Dec 29 '12 at 2:11
    
Ok I ll do that right away –  George Pligor Dec 29 '12 at 16:51
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1 Answer

Ignore the warning, this is a longstanding bug. The .gvfs directory is a virtual filesystem used to map things like network connections you make with nautilus. It can not be accessed by root, even enough to see that it is a virtual filesystem and thus, should be skipped.

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