Thanks, John and Neil. I have just a few more questions. Any chance of this working on 2.6.32? Specifically, Suse Linux Enterprise Server 11 SP1? :-) I am interested in attempting this "by hand", so... > - convert the RAID0 to RAID4 > - disable recovery from auto-starting > - add /dev/newdisc to the array as a spare (but recovery won't start) > - request a size change to one extra disk > - start the reshape > - wait for the reshape to complete > - convert back to RAID0 ...could someone flesh out the mdadm and /sys invocations a little bit? Even vague pointers would be fine. To make sure I understand the procedure correctly... We convert from RAID0 to (degraded) RAID4, disable recovery, add a new disk as a spare. That gives us a degraded RAID 4 with a spare. So far I get it. But why are "request a size change to one extra disk" and "start the reshape" separate steps? I assume that "start the reshape" is to take us to a (larger) degraded RAID 4, but what state are we in after the "request a size change"? (Put another way, what is the new disk being used for, exactly, after the "size change" completes? How does that differ from after the "reshape" completes?) Thanks again. - Pat -- 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
