On Saturday June 3, patrik@xxxxxxxxxxx wrote: > Hey Neil, > > It would sure be nice if the log contained any info about the error > correction that's been done rather than simply saying "read error > corrected", like which array chunk, device and sector was corrected. I'm > having a persistent pending sector on a drive, and when I do check or > repair, it says "read error corrected" many times, but I don't know > whether it's doing the same sector over and over or if there are just so > many of them... I seem to remember reading something about this on the > list some time ago, is it already in the kernel? (I'm running 2.6.17-rc4 > now). Yes.... added to todo list: include sector/dev info in read-error-corrected messages > > Btw, when it does correct a read error, I assume it also tries to read > it again to verify that the correction worked? Yes. It doesn't check that the read returns the correct data, but it does check that a read succeeds. However I'm not certain that the read request will punch through any cache on the drive. It could be that the reads return data out of the cache without accessing data on the surface of the disk.... NeilBrown - 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
