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Conference ssdevo::hsz40_product

Title:HSZ40 Product Conference
Moderator:SSDEVO::EDMONDS
Created:Mon Apr 11 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:902
Total number of notes:3319

882.0. "INVALID CACHE problems. Urgent!!" by ZPOVC::CSNAQS () Tue May 20 1997 06:15

    Hi,
    
    Anyone know how I can remove the INVALID Cache on the HSZ50 ?
    I could not remove the INVALID Cache even when I use the command:
    
    CLEAR_ERRORS INVALID_CACHE THIS_CONTROLLER
    
    It just put me into a reduced mode in the CLI and does not clear the
    INVALID Cache. It seems that it is trying to remove D0 lost_data which 
    is no longer exist in the system as I have already remove all the 
    storageset.
    
    The Raid 450 was configured previously as dual redundant controller. I 
    was not able to get the other controller up due to the invalid cache.
    Inorder to get the system up, I was forced to run it in a single HSZ50 
    Controller and reconfigure the raid on hard disk in the Raid 450
    temparory. 
    I could not bring it back to dual redundant controller unless the INVALID 
    Cache on the Other controller is clear.
    
    Anyone know how I can clear up this mess.
    
    Please help asap. Thanks
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882.1Urgent, need to get it up and running.ZPOVC::CSNAQSTue May 20 1997 09:0824
    Hi,
    
    Now I got the working having the same problems of INVALID cache. I was
    working on an NT Cluster setup. Initially, I have both Server able to
    see the disk on the Raid 450 one at a time. According to the cluster
    manual, I need to power off the Raid 450 so that I could boot up both
    Server to install cluster. Therefore, I switch off the power supply of
    the raid 450. Could it be the cause of this, that the data was not able
    to flush to the disk when I power off the Raid 450 ?
    
    Will my installation of cluster be smoothly if I set the cache policy
    to B if that is the case that causes the INVALID Cache problems ?
    
    The command that I type should be: 
    
    CLEAR_ERRORS THIS_CONTROLLER INVALID_CACHE
    
    But is still does work. The CLI command is set reduced and if I key in
    the above command, it will only seee part of the command and complaint
    incomplete command.
    
    Any advise and help ?
    Thanks
    
882.2You need to complete the commandSSDEVO::JACKSONJim Jackson, HSx RAID teamTue May 20 1997 13:587
Your command is incomplete.  It needs a fourth keyword.  E.g.:

    CLEAR_ERRORS THIS_CONTROLLER INVALID_CACHE DESTROY_UNFLUSHED_DATA

Issuing a question mark would have given you a list of the possible keywords:

    CLEAR_ERRORS THIS_CONTROLLER INVALID_CACHE ?