openMosix

Here is an example program:

#include <sys/stat.h>
#include <stdio.h>
#include <unistd.h>
#include <stddef.h>
#include <fcntl.h>

main(int argc,char **argv) {
struct stat s1;
struct stat s2;
int fd;

fd=open(argv[1],O_RDONLY);
fstat(fd,&s2);
stat(argv[1],&s1);
printf("%08x", s1.st_dev >> 32);
printf("%08x\n", s1.st_dev);
printf("%08x", s2.st_dev >> 32);
printf("%08x\n", s2.st_dev);

}


If you run that against a file inside mfs, e.g.

copcsl01:/tmp# ./test /mfs/here/tmp/test.c
08020000000000ff
0802c09a000000ff
copcsl01:/tmp#

Then as you see, you get different results for stat()
and fstat() in the st_dev. (top number is stat() bottom
is fstat())

This shouldn't be too much of an issue since the
difference is not in the major nor minor numbers,
however it does make cp fail, e.g.

copcsl01:/tmp# cp /mfs/here/tmp/test.c test2.c
cp: skipping file `/mfs/here/tmp/test.c', as it was
replaced while being copied
copcsl01:/tmp#

This messes up an awful lot of stuff.