Hi, > Spare should mean that it is not currently a synced member of the > array; in other words a hot-spare. As I recall raid10 cannot > currently be grown (or /may/ only be grown with VERY recent > tools+kernels); did you maybe create a single device raid10 and try to > grow it? uhm, well, not really, but almost. If I remember correctly, at least one of the arrays with "spare", was created with missing disk, added then later. BTW, I also notice another array, still RAID-10, where both the disks have "spare" role... Thanks, bye, -- piergiorgio -- 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