Re: a question about BLCR

From: Paul H. Hargrove (PHHargrove_at_lbl_dot_gov)
Date: Mon May 25 2009 - 13:30:46 PDT

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    Jack,
    
    As Sergio said, the error you see comes when the kernel modules are not 
    loaded.
    Also as Sergio said, you will need to "cr_run" an application or you 
    will get an error about "Checkpoint failed: support missing from 
    application".
    Finally, BLCR does not do anything to save the state of network 
    connections or the contents of files on disk.  So, there is a very real 
    possibility that if you do checkpoint apache it might not be usable when 
    restarted.
    
    -Paul
    
    Sergio Díaz wrote:
    > Hi,
    >
    > I don't know why are you trying to do a checkpoint to apache.... and 
    > if it is possible to do a checkpoint to a daemon, but to get a 
    > successful checkpoint, you have to run the application with the 
    > command cr_run. For example: "cr_run ./sleep.sh" then you can do  
    > cr_checkpoint.
    > Also, you have to load the checkpoint modules (blcr.ko and 
    > blcr_import.ko). If not, the error is the same.
    >
    >
    > Regards,
    > Sergio
    >
    >
    > shuxi liu escribió:
    >> hello sir or madam,
    >>      I have used blcr-0.8.1 in 2.6.27.5-117.fc10.i686,and i have done 
    >> the example of counting.
    >>      I want to make checkpoint to apache, but i have some problem.
    >>       httpd pid is 3170
    >>    [root@fedora10 blcr-0.8.1]# cr_checkpoint 3170
    >>    Checkpoint failed: support missing from kernel
    >>    i don't know how to make checkpoint to apache.i need your help.
    >>    i look forward to your reply.thank you very much.
    >>  
    >>  
    >>  
    >>  
    >>                              turely yours                             
    >>                                Jack
    >>     
    >
    >
    
    
    -- 
    Paul H. Hargrove                          PHHargrove_at_lbl_dot_gov
    Future Technologies Group                 Tel: +1-510-495-2352
    HPC Research Department                   Fax: +1-510-486-6900
    Lawrence Berkeley National Laboratory     
    

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