Single drive to Software mirror

[Michael Mansour]

Hi,

I have an ext3 drive which has data on it, and I'd
like to mirror this drive with Linux software
mirroring.

Without losing any data, can I just plug in the second
drive, modify the /etc/raidtab file to incorporate
both drives in a mirror and then bring up the md
device for that raid set? ie. will linux automatically
start to build the mirror retaining all the data?

Thanks.

Michael.


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