From: Paul H. Hargrove (PHHargrove_at_lbl_dot_gov)
Date: Fri May 13 2005 - 11:54:12 PDT
I appologize for the slow response; I have just returned from travelling.
I am afraid that in the current release of BLCR we do not implement any
mechansim for the recovery of files which have been unlinked, renamed,
or modified. This is a "known limitation" rather than a bug. In a future
version we will allow for some recovery in these cases, but this is not
a high priority at the moment.
-Paul
�� �� wrote:
>Hi!
> CR_Restart operation will not succeed if a file is unlinked while opening.
> Because it can not reopen the file when restart.
> I don't know it is a bug or not.
> The test code is as follows :
> /* -------------------------------------------------------------------------------------------------------------------- */
>#include <unistd.h>
>#include <sys/types.h>
>#include <sys/stat.h>
>#include <fcntl.h>
>
>int main(void)
>{
> int fd;
> int i;
>
> fd = open("data", O_RDWR | O_TRUNC | O_CREAT, 00600);
>
> if (unlink("data") < 0) {
> printf("unlink error\n");
> }
> printf("checkpointing here ... \n");
> getchar();
>
> /*
> read() or write() on this file description ...
> */
>
> printf("failing here ... \n");
> getchar();
>
> return 0;
>}
> /* -------------------------------------------------------------------------------------------------------------------- */
>
> Thanks!
>
>
>[email protected]
>2005-05-09
>
>
>
--
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