> I stumbled in the same way initially, but then re-read more closely and
> noticed that Neil said to run it "on some component of the array", e.g.
> /dev/sdxN, not the array itself -- and that way it worked fine. However as
my
> array sees almost no write load at the moment, I have no useful results to
> report.
>
> --
> With respect,
> Roman
[GM> ]
Duh.... You are correct, here's the output from one of my disks
mdadm -X /dev/sdn1
Filename : /dev/sdn1
Magic : 6d746962
Version : 4
UUID : 1470c671:4236b155:67287625:899db153
Events : 10584
Events Cleared : 10584
State : OK
Chunksize : 128 MB
Daemon : 5s flush period
Write Mode : Normal
Sync Size : 488383488 (465.76 GiB 500.10 GB)
Bitmap : 3727 bits (chunks), 0 dirty (0.0%)
Like you, I've no load on it at the moment, but I do have a couple of GB to
copy onto it today, so I'll see if I can get some more figures.
I think I need some tea...:)
G
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