I am growing my RAID array again.
It consists of 4x500GB in RAID 5, growing to 5x500GB in RAID 5.
Unfortunately, at its current rate, it is going to take forever:
damien@mediabox:~$ cat /proc/mdstat
Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
md0 : active raid5 sda1 sdc1 sdd1 sde1 sdb1
1465151808 blocks super 0.91 level 5, 64k chunk, algorithm 2 [5/5] [UUUUU]
[>....................] reshape = 0.4% (2039168/488383936) finish=7388.0min speed=1094K/sec
unused devices: <none>
That is, assuming it stays at 1100KB/s, then it will about about 21 days to complete.
Given that I'd rather not wait that long, is there any way to speed it up?
I have seen fleeting references to:
damien@mediabox:~$ cat /proc/sys/dev/raid/speed_limit_min
damien@mediabox:~$ cat /proc/sys/dev/raid/speed_limit_max
But I have no idea what numbers should go in there, or even what the limits mean.