* Gordon Henderson (gordon@xxxxxxxxxx) [20041220 10:50]:
> Is there any plans to make the entries in /proc/partitions
> return anything sensible for the md devices?
AFACT not. Current consensus is that md devices don't do I/O,
they only dispatch I/O to lower layer devices, hence no stats.
(OTOH, I personally was in a situation at least once when it
would have been very useful -- regardless of the obvious double
accounting.)
> If not, is there any other way to get some stats on reading &
> writing each md device?
Parse /proc/mdstat and cook up your own stat counters based on the
md member devices' stats.
Peter
PS: 2.6.x same thing
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