>>>>> "Marc" == Marc MERLIN <[email protected]> writes:
Marc, Marc> So I have Sata 3.1, that's great news, it means I can keep using Marc> discard without worrying about performance and hangs The fact that the drive reports compliance with a certain version of SATA does not in any way imply that it implements all commands defined in that specification. The location where queued TRIM support is reported is somewhat unusual. And last I looked hdparm -I had no infrastructure in place to report stuff contained in log pages. The kernel does look the right place to determine whether to issue the queued or unqueued variant or not. But the information isn't exported to userland. So right now I'm afraid we don't have a good way for a user to determine whether a device supports queued trims or not. I guess we could consider either adding an ATA-specific "I don't suck" flag in sysfs, add the missing code to hdparm, or both... -- Martin K. Petersen Oracle Linux Engineering -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
