On Wednesday September 12, millerdc@xxxxxxxxxxxxxx wrote: > > > Problem: > > The mdadm --grow command fails when trying to add disk to a RAID6. > .. > > So far I have replicated this problem on RHEL5 and Ubuntu 7.04 > running the latest official updates and patches. I have even tried it > with the most latest version of mdadm 2.6.3 under RHEL5. RHEL5 uses > version 2.5.4. You don't say what kernel version you are using (as I don't use RHEL5 or Ubunutu, I don't know what 'latest' means). If it is 2.6.23-rcX, then it is a known problem that should be fixed in the next -rc. If it is something else... I need details. Also, any kernel message (run 'dmesg') might be helpful. 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