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@@ -236,6 +236,14 @@ Each directory contains:
providing an ongoing count for arrays with metadata managed by
userspace.
+ slot
+ This gives the role that the device has in the array. It will
+ either be 'none' if the device is not active in the array
+ (i.e. is a spare or has failed) or an integer less than the
+ 'raid_disks' number for the array indicating which possition
+ it currently fills. This can only be set while assembling an
+ array. A device for which this is set is assumed to be working.
+
An active md device will also contain and entry for each active device
in the array. These are named
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