Hi, Xiao Ni posted back in September about a problem where mdadm --grow fails with: mdadm: Failed to initiate reshape! I'm seeing the same problem, with mdadm 3.3.4, Kernel 4.3.0. I can reproduce this reliably when adding a device to a 2-device raid0 array. Instead of switching to raid4 for the reshape, then switching back to raid0 when done, it ends up in raid4 in recovery mode. I tried the suggested change of adding a call to md_check_recovery() in action_store(), and that does seem to help most of the time. I was curious if there is a better solution, and/or if this or another change will show up in 4.3.x soon. Thanks. Kev -- 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