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mdadm how to recover from failed drive

Remove the failed partition /dev/sde1

 mdadm --manage /dev/md99 -r /dev/sde1
mdadm: hot removed /dev/sde1 from /dev/md99


Now add another drive back to replace it:

 # mdadm --manage /dev/md99 -a /dev/sdf1
mdadm: added /dev/sdf1


A "cat /proc/mdstat" should show it resyncing if all is well.


mdadm, partition, dev, sde, md, sdf, quot, proc, mdstat, resyncing,

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