tree d1774f628f6a78c3eb5ad37ad6ac591efbea53c2
parent 0d5b625cd2f800c64948311cf0f51259d8a83533
author Alan D. Brunelle <alan.brunelle@hp.com> 1252695430 -0400
committer Jens Axboe <jens.axboe@oracle.com> 1252697673 +0200

Bug fix: handles disk device used multiple times

There were issues in having the same underlying device being referenced
multiple times (via different paths) when reporting storage I/O
statistics. As an example: having two (or more) LVM2/DM volumes crafted
out of the same MD array.

This patch simply skips over any devices previously seen.

Signed-off-by: Alan D. Brunelle <alan.brunelle@hp.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>