I’m performing a one-by-one drive upgrade on my TS-832PX, and I’ve replaced the 1st 8TB drive with a new 16TB drive. mdstat says that md1 is “resync=DELAYED”, and it’s currently rebuilding /dev/md322. The problem is that the speed is REALLY slow. Like, 2048K - 6192K per second. Is this normal? The last time I did an upgrade was right after I got it and swapped out some 2TB drives for the 8TB drive’s I’ve been using for the past 4 years…and I don’t remember it taking so long for the main data array to be rebuilt.
I DID get an error about not being able to access the device, but mdadm –examine /dev/sdi3 says that the superblock is clean, and that the array is rebuilding.
Is it safe to cancel out of the replace disks one-by-one dialogue to check disk health?
Ok, I’m just impatient. md1 is now rebuilding at something like 148MB/s.
I’m just confused about md322. The mdstat shows that there are 2 members, and 6 spares. So why didn’t the system start rebuilding the array on the next available spare disk the moment I pulled the drive out of the slot?
I can only assume that the slow speed was because the 5th partition is at the end of the drive, and the heads are having to transit across all cylinders?
