Re: Raid5 reshape

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Nigel J. Terry wrote:

> One comment - As I look at the rebuild, which is now over 20%, the time
> till finish makes no sense. It did make sense when the first reshape
> started. I guess your estimating / averaging algorithm doesn't work for
> a restarted reshape. A minor cosmetic issue - see below
> 
> Nigel
> [nterry@homepc ~]$ cat /proc/mdstat
> Personalities : [raid5] [raid4]
> md0 : active raid5 sdb1[1] sda1[0] hdc1[4](S) hdb1[2]
>      490223104 blocks super 0.91 level 5, 128k chunk, algorithm 2 [4/3]
> [UUU_]
>      [====>................]  reshape = 22.7% (55742816/245111552)
> finish=5.8min speed=542211K/sec


Unless something has changed recently the parity-rebuild-interrupted /
restarted-parity-rebuild case shows the same behavior.

It's probably the same chunk of code (I haven't looked, bad hacker!
bad!), but I thought I'd mention it in case Neil goes looking

The "speed" is truly impressive though. I'll almost be sorry to see it
fixed :-)

-Mike
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