Re: [Dmtcp-forum] Query regarding check-pointing

[Ankit G. <Ank...@me...>]

Thanks a lot Rohan,
              It works.

Regards
Ankit

On 09/30/2014 10:22 PM, Rohan Garg wrote:
> Hi Ankit,
>
> By restore I’m assuming you mean that DMTCP should restore the deleted 
> file to
> the state it was in at the time of checkpoint. If yes, then you could 
> try using
> the --ckpt-open-files flag with dmtcp_launch. This should save a copy 
> of all the
> files open at the time of checkpoint, and then restores them on 
> restart, even if
> they were deleted.
>
> Thanks,
> Rohan
>
> On Sep 30, 2014, at 8:51 AM, Ankit Garg <Ank...@me... 
> <mailto:Ank...@me...>> wrote:
>
>> Hi,
>>         I guess it will not work. I tried the following code segment
>>
>> #include <stdio.h>
>> #include <string.h>
>> #include <stdlib.h>
>> #include <unistd.h>
>> #include "dmtcp.h"
>>
>> int main(int argc, char *argv[])
>> {
>>     FILE *fp = fopen("msg", "r");
>>     printf("Hello world \n");
>>     char buff[256];
>>     //char s[100];
>>     int s = 0;
>>     //memset(s, 1, sizeof(s));
>>     while(1)
>>     {
>>         sleep(1);
>>         printf("S == %d\n", s);
>>         s++;
>>
>>         if(fgets(buff, 256, fp) != NULL)
>>             printf("Read value = %s\n", buff);
>>         if(s == 8)
>>         {
>>             if (*dmtcp_checkpoint*() != DMTCP_AFTER_CHECKPOINT)
>>                 printf("Checkpoint Not successful\n");
>>             else
>>                 printf("Hurray \n");
>>         }
>>         if(s == 20)
>>         {
>> *unlink*("msg");
>>             exit(0);
>>         }
>>     }
>> }
>>
>> I got following error on restart
>>
>> ./dmtcp_restart_script.sh
>> *[43000] ERROR at fileconnection.cpp:708 in refill; 
>> REASON='JASSERT(jalib::Filesystem::FileExists(_path)) failed'
>>      _path = msg*
>> Message: File not found.
>> a.out (43000): Terminating...
>>
>>
>> Is there a way above can work ?
>>
>>
>> Regards
>> Ankit
>>
>>
>>
>> On 09/30/2014 06:09 PM, Ankit Garg wrote:
>>> Hi,
>>>      I want ask whether following application can restored using dmtcp.
>>>
>>> Consider an application which reads contents from some file and then 
>>> takes checkpoint in between using *dmtcp_checkpoint* API interface.  
>>> Now if the end of application this files gets deleted,  would 
>>> restore still work from checkpoint database ?
>>>
>>>
>>> Regards
>>> Ankit
>>>
>>
>>
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