Quoting sukadev@xxxxxxxxxx (sukadev@xxxxxxxxxx): > > cryo does not (cannot ?) recreate files if the application created I think that's for the best. Don't you? The most we should do is make sure cryo has a clear enough error message. -serge > a file before checkpoint and the file does not exist at the time > of restart. > > Note that the 'flags' field in '/proc/$pid/fdinfo/$fd' will not > have the O_CREAT (or O_TRUNC, O_EXCL, O_NOCTTY) flags. These > are cleared in __dentry_open()). > > At the time of restart, is there a way for cryo to know that the > file must be created ? > > To reproduce: > - run following program, > - checkpoint after the first printf > - rm /tmp/foo1 > - restart # fails to open file during restart > > --- > #include <stdio.h> > #include <unistd.h> > #include <errno.h> > #include <sys/fcntl.h> > > main() > { > int fd; > int i; > char *buf = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"; > > fd = open("/tmp/foo1", O_RDWR|O_CREAT|O_TRUNC, 0666); > > if (fd < 0) { > perror("open"); > exit(1); > } > printf("%d: Opened '/tmp/foo1', fd %d\n", getpid(), fd); > > for (i = 0; i < strlen(buf); i++) { > if (write(fd, &buf[i], 1) < 0) { > printf("Error %d writing %c to file, i %d\n", > errno, buf[i], i); > exit(1); > } > printf("%d: i %d, wrote %c\n", getpid(), i, buf[i]); > sleep(2); > } > } > _______________________________________________ > Containers mailing list > Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linux-foundation.org/mailman/listinfo/containers _______________________________________________ Containers mailing list Containers@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/containers