On Thursday January 25, [EMAIL PROTECTED] wrote:
> How do I serialise mdadm --add/--re-add calls other than by
> writing some shell to poll /proc/mdstat ? Is there a way to make
> mdadm synchronous i.e., waiting until the operation completes or
> fails instead of starting it in the background and returning.

Something has to poll mdstat (or some /sys file).
In mdadm-2.6 where is a '-W' option which will wait for
resync/recovery to complete. So
  mdadm /dev/mdX -add /dev/thing
  mdadm -W /dev/mdX

might be what you want.

NeilBrown
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