It has been fixed upstream and is filtering down to the distros. What version of distro are you seeing this issue in? We are currently testing this fix.
From: dm-devel-bounces redhat com [mailto:dm-devel-bounces redhat com] On Behalf Of Paul Cote
Sent: Wednesday, December 05, 2007 1:47 PM
To: device-mapper development
Subject: [dm-devel] Black listing CLARiiON "LUNZ"?
The array data struct for DGC (CLARiiON) shows that LUNZ is blacklisted; but any tine that LUN is “visible” during a reboot; the host will hang.
EMC did state this was an issue in their DM config guide; but I thought black listing would circumvent the issue.
features 1 queue_if_no_path
hardware_handler 1 emc
prio_callout /sbin/mpath_prio_emc /dev/%n