Hi again,
is there please any way to allow opening /dev/raid/r0 for writing even in multi-user mode and when root filesystem is on that device in FreeBSD 10.1?
I know I can allow writing to rank 1 GEOM providers by setting kern.geom.debugflags to 0x10 (16), but it doesn't help with raid/r0:
Thanks in advance for any help.
is there please any way to allow opening /dev/raid/r0 for writing even in multi-user mode and when root filesystem is on that device in FreeBSD 10.1?
I know I can allow writing to rank 1 GEOM providers by setting kern.geom.debugflags to 0x10 (16), but it doesn't help with raid/r0:
Code:
[root@ ~]# cat test-write.c
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>
int main(int argc, char* argv[]) {
char* dev;
int fd;
dev = argv[1];
if (argc != 2) {
printf("Usage: %s file\n", argv[0]);
return 1;
}
if ((fd = open(dev, O_WRONLY)) < 0) {
perror(dev);
return 1;
} else {
printf("%s: OK\n", dev);
}
if (close(fd)) {
perror(dev);
return 1;
}
return 0;
}
[root@ ~]# cc -o test-write test-write.c
[root@ ~]# ./test-write /dev/ada0
/dev/ada0: Operation not permitted
[root@ ~]# ./test-write /dev/raid/r0
/dev/raid/r0: Operation not permitted
[root@ ~]# sysctl kern.geom.debugflags=16
kern.geom.debugflags: 0 -> 16
[root@ ~]# ./test-write /dev/ada0
/dev/ada0: OK
[root@ ~]# ./test-write /dev/raid/r0
/dev/raid/r0: Operation not permitted
Thanks in advance for any help.