On Thu, 03 Jun 2010 12:47:39 -0400 Dan Christensen <jdc@xxxxxx> wrote: > Bill Davidsen <davidsen@xxxxxxx> writes: > > > Those logs don't show any information useful to me which tells me how > > long md waited, and I'm not able to parse any of the res: information > > to gain clarity. It would be nice if someone can parse that, but I > > can't. On timeout an elapsed time output would be nice to indicate > > what the time limit is. > > I agree. It would also be nice to know whether there was in fact a read > error at that time (in which case I may just replace the drives to avoid > this problem) or whether it was some other communications glitch (in > which case I may suspect the power supply, try a newer kernel, etc). > With the information at hand, I'm not sure how to fix this, and since > it often is a month or more between occurrences, trial and error is > not likely to help. > > > I sure would like to see a timeout in ms [md?] in > > the /sys for the device and a flag for the array to not kick a drive > > for timeout until some number of consecutive timeouts have > > occurred. > > That could be useful. And, as Neil said, if the SATA driver could be > told to use longer timeouts, that might help. Neil, if you think that's > a good idea, maybe you could put the request in with the SATA folks? It might be a good idea. Seeing you have the error logs, you have the border-line drives, you are in the best position to test anything they suggest, and you have the strongest motivation to see a resolution, I recommend you put in the request. Email details should be available in the MAINTAINERS file. NeilBrown > > > I would hope that a drive with multiple partitions would get the > > partitions kicked, not the whole drive at once. So one slow sector > > wouldn't take out multiple arrays. > > Only the partition gets kicked out. Yesterday, this saved me, since I > had timeouts on two drives in RAID5, but all the arrays stayed up because > the partitions didn't happen to be in the same array. > > Dan > > -- > 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 -- 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
