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Growing RAID5 sets in Ubuntu

January 10, 2007 By: webmaster Category: Technology, Tutorials, Ubuntu

Growing RAID5 sets under Linux by adding new disks on the fly has been possible for some time now. However, the kernel that comes default with Ubuntu 6.10 does not appear to contain all the needed support to do this. So if you need to do this, as I did, you first need to boot a newer kernel than the one available. I picked 2.6.19 and compiled it using these instructions. That took about five commands in total to do, so I won't repeat those instructions here. Note however, that I had to specifically add support for both RAID5 and my various SATA-cards to the kernel configuration (the make menuconfig part of the instructions). Your mileage may vary.

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