Which command updates /dev/mapper entries after partition deletion?

[Curtis Gedak]

When a new partition is created, the "dmraid -ay" command can be used to 
create the missing entry in /dev/mapper.  The opposite situation does 
not appear to work wherein I delete a partition.

Which command should be used to remove and/or update the /dev/mapper 
entries when a partition is deleted?

Attached is a log of my session where I used parted to delete a 
partition, and then tried to delete all the /dev/mapper entries with 
"dmraid -an".

Regards,
Curtis Gedak
Maintainer of GParted

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