Added the dm-crypt layer back again, just to see what it would do: - responsiveness problem is back - performance is around the level of a single disk, if that Played around some more and it seems that the system just reacts very badly to some I/O loads. fs creation / bonnie on a resyncing RAID apparently can trigger the same symptoms (even without dm-crypt), though not all configurations. Just for kicks I tried raid on dm-crypt, which doesn't have the problem but is even slower. Back to square one. C. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
