Messages in this thread | | | Subject | Re: new Areca driver in 2.6.16-rc6-mm2 appears to be broken | From | James Bottomley <> | Date | Thu, 20 Apr 2006 08:53:37 -0400 |
| |
On Thu, 2006-04-20 at 10:23 +0200, Jens Axboe wrote: > It was just a suggestion, the bug might very well be just the size of > the transfer itself and nothing SG related. All I can say for sure is > that I'd be very surprised if this fs corruption isn't due to the > hardware mangling the data for large transfers.
It sounds like this to me as well. The other problem might be some type of segment boundary issue which are not uncommon on less capable DMA engines. Either way, there's no question that large transfers work on other hardware (SGI and IBM have extensively tested raising the current 128SG entries limit just so they could squeeze megabytes of data per single command), so as Jens says, this is some type of issue within the Areca hardware which you need to understand before the driver can be made safe.
James
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |