I believe you could try repair from XenCenter. It gets the PBD get plugged most often than not.
-----Original Message----- From: Yiping Zhang [mailto:yzh...@marketo.com] Sent: Tuesday, January 13, 2015 5:43 PM To: users@cloudstack.apache.org Subject: urgent help needed: primary storage became unplugged after xenserver roboot Hi, All: I need some urgent help in restoring my CS instance (version 4.3.1). After patching xenserver 6.2, I rebooted the pool master (I have two xen hypervisors). After the pool master comes back, the SR for the primary storage became "unplugged", and shown as broken in XenCenter. The volume is not mounted on pool master host any more. How do I get it back without losing any data ? Thanks for all helps. Yiping