mdctl-v0.3mdctl-v0.3

1 files changed, 159 insertions, 1 deletions

diff --git a/Manage.c b/Manage.c
index 302a425..7357339 100644
--- a/Manage.c
+++ b/Manage.c
@@ -28,16 +28,174 @@
  */
 
 #include "mdctl.h"
+#include "md_u.h"
+#include "md_p.h"
 
 int Manage_ro(char *devname, int fd, int readonly)
 {
+	/* switch to readonly or rw
+	 *
+	 * requires >= 0.90.0
+	 * first check that array is runing
+	 * use RESTART_ARRAY_RW or STOP_ARRAY_RO
+	 *
+	 */
+	mdu_array_info_t array;
+	
+	if (md_get_version(fd) < 9000) {
+		fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
+		return 1;
+	}
+	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
+		fprintf(stderr, Name ": %s does not appear to be active.\n",
+			devname);
+		return 1;
+	}
+	
+	if (readonly>0) {
+		if (ioctl(fd, STOP_ARRAY_RO, NULL)) {
+			fprintf(stderr, Name ": failed to set readonly for %s: %s\n",
+				devname, strerror(errno));
+			return 1;
+		}
+	} else if (readonly < 0) {
+		if (ioctl(fd, RESTART_ARRAY_RW, NULL)) {
+			fprintf(stderr, Name ": fail to re writable for %s: %s\n",
+				devname, strerror(errno));
+			return 1;
+		}
+	}
+	return 0;			
 }
 
 int Manage_runstop(char *devname, int fd, int runstop)
 {
+	/* Run or stop the array. array must already be configured
+	 * required >= 0.90.0
+	 */
+	mdu_array_info_t array;
+	mdu_param_t param; /* unused */
+	
+	if (md_get_version(fd) < 9000) {
+		fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
+		return 1;
+	}
+	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
+		fprintf(stderr, Name ": %s does not appear to be active.\n",
+			devname);
+		return 1;
+	}
+	
+	if (runstop>0) {
+		if (ioctl(fd, RUN_ARRAY, &param)) {
+			fprintf(stderr, Name ": failed to run array %s: %s\n",
+				devname, strerror(errno));
+			return 1;
+		}
+	} else if (runstop < 0){
+		if (ioctl(fd, STOP_ARRAY, NULL)) {
+			fprintf(stderr, Name ": fail to re writable for %s: %s\n",
+				devname, strerror(errno));
+			return 1;
+		}
+	}
+	return 0;
 }
 
 int Manage_subdevs(char *devname, int fd,
 		   int devcnt, char *devnames[], int devmodes[])
-{
+ {
+	/* do something to each dev.
+	 * devmode can be
+	 *  'a' - add the device
+	 *	   try HOT_ADD_DISK
+	 *         If that fails EINVAL, try ADD_NEW_DISK
+	 *  'r' - remove the device HOT_REMOVE_DISK
+	 *  'f' - set the device faulty SET_DISK_FAULTY
+	 */
+	mdu_array_info_t array;
+	mdu_disk_info_t disc;
+	struct stat stb;
+	int i,j;
+
+	if (ioctl(fd, GET_ARRAY_INFO, &array)) {
+		fprintf(stderr, Name ": cannot get array info for %s\n",
+			devname);
+		return 1;
+	}
+	for (i=0 ; i<devcnt; i++) {
+		if (stat(devnames[i], &stb)) {
+			fprintf(stderr, Name ": cannot find %s: %s\n",
+				devnames[i], strerror(errno));
+			return 1;
+		}
+		if ((stb.st_mode & S_IFMT) != S_IFBLK) {
+			fprintf(stderr, Name ": %s is not a block device.\n",
+				devnames[i]);
+			return 1;
+		}
+		switch(devmodes[i]){
+		default:
+			fprintf(stderr, Name ": internal error - devmode[%d]=%d\n",
+				i, devmodes[i]);
+			return 1;
+		case 'a':
+			/* add the device - hot or cold */
+			if (ioctl(fd, HOT_ADD_DISK, stb.st_rdev)==0) {
+				fprintf(stderr, Name ": hot added %s\n",
+					devnames[i]);
+				continue;
+			}
+			/* try ADD_NEW_DISK.
+			 * we might be creating, we might be assembling,
+			 * it is hard to tell.
+			 * set up number/raid_disk/state just
+			 * in case
+			 */
+			for (j=0; j<array.nr_disks; j++) {
+				if (ioctl(fd, GET_DISK_INFO, &disc))
+					break;
+				if (disc.major==0 && disc.minor==0)
+					break;
+				if (disc.state & 8) /* removed */
+					break;
+			}
+			disc.number =j;
+			disc.raid_disk = j;
+			disc.state = 0;
+			disc.major = MAJOR(stb.st_rdev);
+			disc.minor = MINOR(stb.st_rdev);
+			if (ioctl(fd,ADD_NEW_DISK, &disc)) {
+				fprintf(stderr, Name ": add new disk failed for %s: %s\n",
+					devnames[i], strerror(errno));
+				return 1;
+			}
+			fprintf(stderr, Name ": added %s\n", devnames[i]);
+			break;
+
+		case 'r':
+			/* hot remove */
+			/* FIXME check that is is a current member */
+			if (ioctl(fd, HOT_REMOVE_DISK, stb.st_rdev)) {
+				fprintf(stderr, Name ": hot remove failed for %s: %s\n",
+					devnames[i], strerror(errno));
+				return 1;
+			}
+			fprintf(stderr, Name ": hot removed %s\n", devnames[i]);
+			break;
+
+		case 'f': /* set faulty */
+			/* FIXME check current member */
+			if (ioctl(fd, SET_DISK_FAULTY, stb.st_rdev)) {
+				fprintf(stderr, Name ": set disk faulty failed for %s:  %s\n",
+					devnames[i], strerror(errno));
+				return 1;
+			}
+			fprintf(stderr, Name ": set %s faulty in %s\n",
+				devnames[i], devname);
+			break;
+		}
+	}
+	return 0;
+	
 }