HyperV and missing previous versions RRS feed

  • Question

  • We have a Windows 2008 R2 Datacenter File server running as a Virtual Machine in a 2008 R2 Datacenter Hyper-V host.  The server is in the Failover Cluster.  The server is given 4GB of RAM, and two processors.  It is using two virtual interfaces managed by Dells HIT Kit for Equallogic, and MS MPIO services to multi-path the storage interface.  There are two volumes mounted/connected to the server via iSCSI and MPIO connections.  Drive IDs for the Volumes are E: and F:.  The SAN is an Equallogic  PS6500E.  We have one member SAN.


    We recently experienced a MPIO Event 23 and Event 16 on the E: drive interface.  It required manual intervention to re-attach the E: drive volume.  There were no errors on the F: drive connection.


    After re-connecting the E: drive connection the following problems surfaced:  All permissions at the root of the E: drive disappeared, however all NTSF permissions on individual folders and files remained unaffected.  User file access was not impacted.  If the users went to the Previous Versions GUI, the received “No Previous Versions Available”.   Likewise for Domain Administrators when on the file server.


    Going to a CMD prompt on the file server, and running VSSADMIN List Shadows /for=e:,  we show the regularly scheduled shadow copies are being created, and assigned IDs.  Going to the GUI for Previous Versions on the F: drive, there is a delay as it searches, and all available copies are displayed.


    These conditions continued even after the permissions were restored on the E: drive.  It is as if there is a “switch” that got turned off for the E: drive.


    Any ideas what to do next?



    Mickey Lindstrom
    Thursday, November 4, 2010 6:25 PM