geom_mirror delayed synchronizing question

[R. B. Riddick]

--- Christian Laursen <xi at borderworlds.dk> wrote:
> What is missing is automatic synchronization after running this
> command. If I manualle run "gmirror rebuild name prov" on the stale
> arrays, synchronization starts, but I need this to happen
> automatically.
> 
> The small changes I have made so far: 
> http://borderworlds.dk/~xi/gmirror.diff
> 
> Any hints on how to write the code to find the relevant mirrors and
> initiate the rebuild would be much appreciated.
> 
Wasnt that feature already implemented?
"graid5 configure -a" and "... -n"?

I would be glad if it was possible for gmirror to detect an idle
gmirror-device... If it is idle, requests r issued more frequent and if the
device experiences concurrent requests (e. g. from fsck), gmirror does no or
hardly any sync requests...

But this strategy could lead to a very very lengthly rebuild process on a very
busy server, which contracts a RAID0-like risk of (complete) device failure...

Maybe this "nice feature" should be implemented somehow intelligently? Maybe
phases of rebuild and phases where concurrent user-land requests r executed?
E. g.: 10 second undisturbed user-land (if there r any pending requests) and
then 1 second gmirror's rebuild requests...

-Arne


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