On Mon, Jan 25, 2010 at 10:23:57AM -0500, Ric Wheeler wrote: > > For permanent write errors, I would expect any modern drive to do a > sector remapping internally. We should never need to track this kind > of information for any modern device that I know of (S-ATA, SAS, > SSD's and raid arrays should all handle this). ... and if the device is run out of all of its blocks in its spare blocks pool, it's probably well past the time to replace said disk. BTW, I really liked Dave Chinner's summary of the issues involved; I ran into Kawai-san last week at Linux.conf.au, and we discussed pretty much the same thing over lunch. (i.e., that it's a hard problem, and in some cases we need to retry the writes, such as a transient FC path problem --- but some kind of write throttling is critical or we could end up choking the VM due to too many pages getting dirtied and no way of cleaning them.) - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
