On Wednesday May 16, dondster@xxxxxxxxx wrote: ... > > The problem arises when I do a drive removal such as sda and then I > remove power from the system. Most of the time I will have a corrupted > partition on the md device. Other corruption will be my root partition > which is an ext3 filesystem. I seem to have a better chance of booting > a least 1 time with no errors with bitmap turned on, but If I repeat > the process, I will have corruption as well. Also with bitmap turned > on, adding the new drive into the md device will take way to too long. > I only get about 3MB per second on the resync. With bitmap turned off, > I will get between 10MB to 15MB resync rate. Has anyone else seen this > behavior, or is this situation is no tested very often? I would think > that I shouldn't get corruption with this raid setup and jornaling of > my filesytems? Any help would be appreciated. The resync rate should be the same whether you have a bitmap or not, so that observation is very strange. Can you double check, and report the contents of "/proc/mdstat" in the two situations. You say you have corruption on your root filesystem. Presumably that is not on the raid? Maybe the drive doesn't get a chance to flush it's cache when you power-off. Do you get the same corruption if you simulate a crash without turning off the power. e.g. echo b > /proc/sysrq-trigger Do you get the same corruption in the raid10 if you turn it off *without* removing a drive first? 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
