Thread: Help setting up LinuxRAID-1 in opensuse 11.1
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Old 05-Jul-2009, 09:57
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Default Re: Help setting up LinuxRAID-1 in opensuse 11.1
This seems to be a common misconception about RAID1, that you can take an existing partition with a filesystem and data, pair it with an empty partition, brand them RAID1, then mirror the existing data, and voila, RAID1!

It doesn't work that way. RAID1 has to be created from the bottom up. First you label two empty partitions RAID and then assemble them. Then you format the array with a filesystem, ext3, xfs, what have you. As far as the filesystem is concerned it sees one virtual partition. Underneath, the kernel (or the RAID controller, in the case of hardware RAID) is keeping the components synchronised.
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