On 2/21/2011 2:39 PM, Mathias BurÃn wrote: > Plus support is needed from the kernel (done) filesystem (ext4 has > it). The filesystem seese the MD device, not the actual SSDs behind > it, so it would probably be quite complicated to implement passthrough > of the trim command in this case. It has been mentioned at least twice now how to implement it. The device-mapper driver already has implemented TRIM passthrough for its linear, stripe, and mirror targets. The trick is handling it with raid[56]. -- 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