From: shuxi liu (liushuxi2009_at_gmail.com)
Date: Sat May 30 2009 - 08:13:32 PDT
hello Paul and Sergio,
thanks for all your help.In my opinino,maybe I can't use BLCR to do
checkpoint t abuot Apache.
But nowadys I do some research in Software fault-tolerance.I do need to do
checkpoint t abuot Apache.
Can you recommend some software to make it?
thank you for your help.
Jack
2009/5/27 Paul H. Hargrove <PHHargrove_at_lbl_dot_gov>
> Jack,
>
>
> There are at least 2 things that come to mind for the error you report
> 1) As Sergio has suggested, you may have an LD_LIBRARY_PATH that is
> pointing only to 32- or 64-bit libraries when apache needs the one not in
> LS_LIBARARY_PATH.
>
> 2) If the apache binary is setuid or setgid, then I beleive the system will
> refuse/ignore any LD_PRELOAD settings as a security measure. If that is the
> case, then there is probably no way to get cr_run and setuid/setgid to work
> together.
>
> -Paul
>
>
> Sergio D�az wrote:
>
>> Hello,
>>
>> This error seems that you are trying to run an application compiled in
>> other architecture (64 or 32 bits).
>> Maybe Paul can give you more clues.
>>
>> Regards,
>> Sergio
>>
>>
>> shuxi liu escribi�:
>>
>>> hello,
>>> thanks for your reply.As you know,I have done the cr_checkpoint and
>>> cr_restart in example of counting.
>>> but when i use cr_cun,also some errors.
>>> [root@fedora10 builddir]# cr_run
>>> /root/blcr-0.8.1/builddir/examples/counting/counting
>>> ERROR: ld.so: object 'libcr_run.so.0' from LD_PRELOAD cannot be
>>> preloaded: ignored.
>>> can you tell me how to make it,thank you very much
>>> jack
>>>
>>>
>>> 2009/5/25 Sergio D�az <[email protected] <mailto:[email protected]>>
>>>
>>> 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 escribi�:
>>>
>>> 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
>>>
>>>
>>> -- Sergio D�az Montes
>>> Centro de Supercomputacion de Galicia
>>> Avda. de Vigo. s/n (Campus Sur) 15706 Santiago de Compostela (Spain)
>>> Tel: +34 981 56 98 10 ; Fax: +34 981 59 46 16
>>> email: [email protected] <mailto:[email protected]> ; http://www.cesga.es/
>>> ------------------------------------------------
>>>
>>>
>>>
>>
>>
>
> --
> Paul H. Hargrove PHHargrove_at_lbl_dot_gov
> Future Technologies Group
> HPC Research Department Tel: +1-510-495-2352
> Lawrence Berkeley National Laboratory Fax: +1-510-486-6900
>
>