vdev_id: Fix partition regular expression
Given a DM device name, the old vdev_id script would extract any text after a 'p' as the partition number. It then appends "-part" + the partition number to the name, giving a by-vdev name like "L0-part5". This works fine if the DM name is like 'dm-2p5', but doesn't work if the DM name is a multipath name like "mpatha". In those cases it incorrectly matches the 'p' in "mpatha", giving by-vdev names like "L0-partatha". This patch fixes the issue by making the partition regex match stricter. Reviewed-by:Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by:
Tony Hutter <hutter2@llnl.gov> Closes #11637
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+9 -3
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