> The reason for the lack of replies is that no-one has much of an idea. Yeah, I figured. > This really looks like a hardware problem. The qi_submit_sync() is > suggestive: it's the intel IOMMU mapping call ... have you tried > reproducing this with the iommu disabled? 4 hours in, and the rebuild 75% complete, with VT-d disabled in the BIOS. "Where's the kaboom?" Thanks, that makes a huge difference. (VT-d has a bunch of individually controllable sub-options; I need to explore them a bit more.) I could also play with some iommu and intel_iommu options. If it really is a hardware fault, I guess I'll give up on LSI and switch to a Marvell 88SE9480 controller. Much obliged! -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html