On Jan 8, 2013, at 4:13 PM, Ross Boylan <ross@xxxxxxxxxxxxxxxx> wrote: > I didn't mean that the disk changed its sector size dynamically, just > that, e.g., it might have physical sectors of 4k but report that it has > (logical) sectors of 512. Reds are AF drives. Any 512e AF drive should be reported as having 512 bytes logical sector size, and 4096 byte physical sector size. > I'm not sure what you mean by the offset working. I'm referring to the > fact that for some drives when you ask for logical sector n you actually > get physical sector n+1, n-2, or something like that. This implies that > aligning on the logical sectors (meaning the ones the drive reports out) > might misalign on the physical ones. There are some drives floating around that have a jumper switch, targeted at Windows XP and older, that will do an offset like what you describe. The jumper isn't enabled by default, and you don't want to use it. >> So you just need to use a more recent partition tool and repartition the disks correctly. > Correctly = start at multiples of 8? Don't think of it that way. You can come up with a partition sector start value divisible by 8 that is right in the middle of physical sector, which is what you don't want. Recent partitioning tools (i.e in the last 3 years at least), do the right thing if you don't 2nd guess them. First partition starts at 2048. Specify partition sizes in MiB. Now you won't have a problem. > > I thought 108 was the scaled smart score, which is between 0 and 255 > with higher being better. The raw value of 45 seemed more plausible as > an actual temperature, though I guess there's no guarantee of that. Yes. > > sdb and sdc have similar numbers for Temperature_Celsius. > > On the logs and sign of disk failure, it's quite possible I don't know > what I'm looking for. Given their size and the fact that the drive > failure seems clear, I think I'll spare you all the gory details. I think you just have the one disk that's giving you trouble. Chris Murphy-- 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
