On Saturday June 2, groups@xxxxxxxxxxxxxxxxxxxxxx wrote: > > raid6 reshape wasn't added until 2.6.21. Before that only raid5 was > > supported. > > You also need to ensure that CONFIG_MD_RAID5_RESHAPE=y. > > I don't see that in the config. Should I add it? Then reboot? You reported that you were running a 2.6.20 kernel, which doesn't support raid6 reshape. You need to compile a 2.6.21 kernel (or apt-get install linux-image-2.6.21-1-amd64 or whatever) and ensure that CONFIG_MD_RAID5_RESHAPE=y is in the .config before compiling. > > I used apt-get install mdadm to first install it, which gave me 2.5.x then I > downloaded the new source and typed make then make install. Now mdadm -V > shows "mdadm - v2.6.2 - 21st May 2007". > Is there anyway to check it is installed correctly? The "mdadm -V" check is sufficient. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html