#include "mdadm.h"
#include "md_u.h"
#include "md_p.h"
+#include <ctype.h>
#define REGISTER_DEV _IO (MD_MAJOR, 1)
#define START_MD _IO (MD_MAJOR, 2)
*
*/
mdu_array_info_t array;
+#ifndef MDASSEMBLE
+ struct mdinfo *mdi;
+#endif
if (md_get_version(fd) < 9000) {
fprintf(stderr, Name ": need md driver version 0.90.0 or later\n");
return 1;
}
+#ifndef MDASSEMBLE
+ /* If this is an externally-manage array, we need to modify the
+ * metadata_version so that mdmon doesn't undo our change.
+ */
+ mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION);
+ if (mdi &&
+ mdi->array.major_version == -1 &&
+ mdi->array.level > 0 &&
+ is_subarray(mdi->text_version)) {
+ char vers[64];
+ strcpy(vers, "external:");
+ strcat(vers, mdi->text_version);
+ if (readonly > 0) {
+ int rv;
+ /* We set readonly ourselves. */
+ vers[9] = '-';
+ sysfs_set_str(mdi, NULL, "metadata_version", vers);
+
+ close(fd);
+ rv = sysfs_set_str(mdi, NULL, "array_state", "readonly");
+
+ if (rv < 0) {
+ fprintf(stderr, Name ": failed to set readonly for %s: %s\n",
+ devname, strerror(errno));
+
+ vers[9] = mdi->text_version[0];
+ sysfs_set_str(mdi, NULL, "metadata_version", vers);
+ return 1;
+ }
+ } else {
+ char *cp;
+ /* We cannot set read/write - must signal mdmon */
+ vers[9] = '/';
+ sysfs_set_str(mdi, NULL, "metadata_version", vers);
+
+ cp = strchr(vers+10, '/');
+ if (*cp)
+ *cp = 0;
+ ping_monitor(vers+10);
+ }
+ return 0;
+ }
+#endif
if (ioctl(fd, GET_ARRAY_INFO, &array)) {
fprintf(stderr, Name ": %s does not appear to be active.\n",
devname);
#ifndef MDASSEMBLE
+static void remove_devices(int devnum, char *path)
+{
+ /* Remove all 'standard' devices for 'devnum', including
+ * partitions. Also remove names at 'path' - possibly with
+ * partition suffixes - which link to those names.
+ */
+ char base[40];
+ char *path2;
+ char link[1024];
+ int n;
+ int part;
+ char *be;
+ char *pe;
+
+ if (devnum >= 0)
+ sprintf(base, "/dev/md%d", devnum);
+ else
+ sprintf(base, "/dev/md_d%d", -1-devnum);
+ be = base + strlen(base);
+ if (path) {
+ path2 = malloc(strlen(path)+20);
+ strcpy(path2, path);
+ pe = path2 + strlen(path2);
+ } else
+ path = NULL;
+
+ for (part = 0; part < 16; part++) {
+ if (part) {
+ sprintf(be, "p%d", part);
+ if (path) {
+ if (isdigit(pe[-1]))
+ sprintf(pe, "p%d", part);
+ else
+ sprintf(pe, "%d", part);
+ }
+ }
+ /* FIXME test if really is md device ?? */
+ unlink(base);
+ if (path) {
+ n = readlink(path2, link, sizeof(link));
+ if (n && strlen(base) == n &&
+ strncmp(link, base, n) == 0)
+ unlink(path2);
+ }
+ }
+}
+
+
int Manage_runstop(char *devname, int fd, int runstop, int quiet)
{
/* Run or stop the array. array must already be configured
* required >= 0.90.0
+ * Only print failure messages if quiet == 0;
+ * quiet > 0 means really be quiet
+ * quiet < 0 means we will try again if it fails.
*/
mdu_param_t param; /* unused */
if (runstop == -1 && md_get_version(fd) < 9000) {
if (ioctl(fd, STOP_MD, 0)) {
- if (!quiet) fprintf(stderr, Name ": stopping device %s failed: %s\n",
- devname, strerror(errno));
+ if (quiet == 0) fprintf(stderr,
+ Name ": stopping device %s "
+ "failed: %s\n",
+ devname, strerror(errno));
return 1;
}
}
} else if (runstop < 0){
struct map_ent *map = NULL;
struct stat stb;
- if (ioctl(fd, STOP_ARRAY, NULL)) {
- if (quiet==0) {
- fprintf(stderr, Name ": fail to stop array %s: %s\n",
+ struct mdinfo *mdi;
+ int devnum;
+ /* If this is an mdmon managed array, just write 'inactive'
+ * to the array state and let mdmon clear up.
+ */
+ devnum = fd2devnum(fd);
+ mdi = sysfs_read(fd, -1, GET_LEVEL|GET_VERSION);
+ if (mdi &&
+ mdi->array.level > 0 &&
+ is_subarray(mdi->text_version)) {
+ /* This is mdmon managed. */
+ close(fd);
+ if (sysfs_set_str(mdi, NULL,
+ "array_state", "inactive") < 0) {
+ if (quiet == 0)
+ fprintf(stderr, Name
+ ": failed to stop array %s: %s\n",
+ devname, strerror(errno));
+ return 1;
+ }
+
+ /* Give monitor a chance to act */
+ ping_monitor(mdi->text_version);
+
+ fd = open(devname, O_RDONLY);
+ } else if (mdi &&
+ mdi->array.major_version == -1 &&
+ mdi->array.minor_version == -2 &&
+ !is_subarray(mdi->text_version)) {
+ /* container, possibly mdmon-managed.
+ * Make sure mdmon isn't opening it, which
+ * would interfere with the 'stop'
+ */
+ ping_monitor(mdi->sys_name);
+ }
+
+ if (fd >= 0 && ioctl(fd, STOP_ARRAY, NULL)) {
+ if (quiet == 0) {
+ fprintf(stderr, Name
+ ": failed to stop array %s: %s\n",
devname, strerror(errno));
if (errno == EBUSY)
fprintf(stderr, "Perhaps a running "
"process, mounted filesystem "
"or active volume group?\n");
}
+ if (mdi)
+ sysfs_free(mdi);
return 1;
}
+ /* prior to 2.6.28, KOBJ_CHANGE was not sent when an md array
+ * was stopped, so We'll do it here just to be sure. Drop any
+ * partitions as well...
+ */
+ if (fd >= 0)
+ ioctl(fd, BLKRRPART, 0);
+ if (mdi)
+ sysfs_uevent(mdi, "change");
+
+
+ if (devnum != NoMdDev &&
+ (stat("/dev/.udev", &stb) != 0 ||
+ check_env("MDADM_NO_UDEV"))) {
+ struct map_ent *mp = map_by_devnum(&map, devnum);
+ remove_devices(devnum, mp ? mp->path : NULL);
+ }
+
+
if (quiet <= 0)
fprintf(stderr, Name ": stopped %s\n", devname);
- if (fstat(fd, &stb) == 0) {
- int devnum;
- if (major(stb.st_rdev) == MD_MAJOR)
- devnum = minor(stb.st_rdev);
- else
- devnum = -1-(minor(stb.st_rdev)>>6);
+ if (devnum != NoMdDev) {
map_delete(&map, devnum);
map_write(map);
map_free(map);
struct supertype *st, *tst;
int duuid[4];
int ouuid[4];
+ int lfd = -1;
if (ioctl(fd, GET_ARRAY_INFO, &array)) {
fprintf(stderr, Name ": cannot get array info for %s\n",
unsigned long long ldsize;
char dvname[20];
char *dnprintable = dv->devname;
+ int err;
next = dv->next;
jnext = 0;
return 1;
case 'a':
/* add the device */
-
+ if (tst->subarray[0]) {
+ fprintf(stderr, Name ": Cannot add disks to a"
+ " \'member\' array, perform this"
+ " operation on the parent container\n");
+ return 1;
+ }
/* Make sure it isn't in use (in 2.6 or later) */
- tfd = open(dv->devname, O_RDONLY|O_EXCL);
+ tfd = open(dv->devname, O_RDONLY|O_EXCL|O_DIRECT);
if (tfd < 0) {
fprintf(stderr, Name ": Cannot open %s: %s\n",
dv->devname, strerror(errno));
}
close(tfd);
- if (array.major_version == 0 &&
+
+ if (!tst->ss->external &&
+ array.major_version == 0 &&
md_get_version(fd)%100 < 2) {
if (ioctl(fd, HOT_ADD_DISK,
(unsigned long)stb.st_rdev)==0) {
return 1;
}
- if (array.not_persistent == 0) {
+ if (array.not_persistent == 0 || tst->ss->external) {
/* need to find a sample superblock to copy, and
- * a spare slot to use
+ * a spare slot to use.
+ * For 'external' array (well, container based),
+ * We can just load the metadata for the array.
*/
- for (j = 0; j < tst->max_devs; j++) {
+ if (tst->ss->external) {
+ tst->ss->load_super(tst, fd, NULL);
+ } else for (j = 0; j < tst->max_devs; j++) {
char *dev;
int dfd;
disc.number = j;
close(dfd);
break;
}
+ /* FIXME this is a bad test to be using */
if (!tst->sb) {
fprintf(stderr, Name ": cannot find valid superblock in this array - HELP\n");
return 1;
disc.minor = minor(stb.st_rdev);
disc.number =j;
disc.state = 0;
- if (array.not_persistent==0) {
+ if (array.not_persistent==0 || tst->ss->external) {
+ int dfd;
if (dv->writemostly == 1)
disc.state |= 1 << MD_DISK_WRITEMOSTLY;
- tst->ss->add_to_super(tst, &disc);
- if (tst->ss->write_init_super(tst, &disc,
- dv->devname))
+ dfd = open(dv->devname, O_RDWR | O_EXCL|O_DIRECT);
+ if (tst->ss->add_to_super(tst, &disc, dfd,
+ dv->devname)) {
+ close(dfd);
+ return 1;
+ }
+ /* write_init_super will close 'dfd' */
+ if (tst->ss->external)
+ /* mdmon will write the metadata */
+ close(dfd);
+ else if (tst->ss->write_init_super(tst))
return 1;
} else if (dv->re_add) {
/* this had better be raid1.
}
if (dv->writemostly == 1)
disc.state |= (1 << MD_DISK_WRITEMOSTLY);
- if (ioctl(fd,ADD_NEW_DISK, &disc)) {
+ if (tst->ss->external) {
+ /* add a disk to an external metadata container
+ * only if mdmon is around to see it
+ */
+ struct mdinfo new_mdi;
+ struct mdinfo *sra;
+ int container_fd;
+ int devnum = fd2devnum(fd);
+
+ container_fd = open_dev_excl(devnum);
+ if (container_fd < 0) {
+ fprintf(stderr, Name ": add failed for %s:"
+ " could not get exclusive access to container\n",
+ dv->devname);
+ return 1;
+ }
+
+ if (!mdmon_running(devnum)) {
+ fprintf(stderr, Name ": add failed for %s: mdmon not running\n",
+ dv->devname);
+ close(container_fd);
+ return 1;
+ }
+
+ sra = sysfs_read(container_fd, -1, 0);
+ if (!sra) {
+ fprintf(stderr, Name ": add failed for %s: sysfs_read failed\n",
+ dv->devname);
+ close(container_fd);
+ return 1;
+ }
+ sra->array.level = LEVEL_CONTAINER;
+ /* Need to set data_offset and component_size */
+ tst->ss->getinfo_super(tst, &new_mdi);
+ new_mdi.disk.major = disc.major;
+ new_mdi.disk.minor = disc.minor;
+ if (sysfs_add_disk(sra, &new_mdi, 0) != 0) {
+ fprintf(stderr, Name ": add new device to external metadata"
+ " failed for %s\n", dv->devname);
+ close(container_fd);
+ return 1;
+ }
+ ping_monitor(devnum2devname(devnum));
+ sysfs_free(sra);
+ close(container_fd);
+ } else if (ioctl(fd, ADD_NEW_DISK, &disc)) {
fprintf(stderr, Name ": add new device failed for %s as %d: %s\n",
dv->devname, j, strerror(errno));
return 1;
case 'r':
/* hot remove */
+ if (tst->subarray[0]) {
+ fprintf(stderr, Name ": Cannot remove disks from a"
+ " \'member\' array, perform this"
+ " operation on the parent container\n");
+ return 1;
+ }
+ if (tst->ss->external) {
+ /* To remove a device from a container, we must
+ * check that it isn't in use in an array.
+ * This involves looking in the 'holders'
+ * directory - there must be just one entry,
+ * the container.
+ * To ensure that it doesn't get used as a
+ * hold spare while we are checking, we
+ * get an O_EXCL open on the container
+ */
+ int dnum = fd2devnum(fd);
+ lfd = open_dev_excl(dnum);
+ if (lfd < 0) {
+ fprintf(stderr, Name
+ ": Cannot get exclusive access "
+ " to container - odd\n");
+ return 1;
+ }
+ /* in the detached case it is not possible to
+ * check if we are the unique holder, so just
+ * rely on the 'detached' checks
+ */
+ if (strcmp(dv->devname, "detached") == 0 ||
+ sysfs_unique_holder(dnum, stb.st_rdev))
+ /* pass */;
+ else {
+ fprintf(stderr, Name
+ ": %s is %s, cannot remove.\n",
+ dnprintable,
+ errno == EEXIST ? "still in use":
+ "not a member");
+ close(lfd);
+ return 1;
+ }
+ }
/* FIXME check that it is a current member */
- if (ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev)) {
+ err = ioctl(fd, HOT_REMOVE_DISK, (unsigned long)stb.st_rdev);
+ if (err && errno == ENODEV) {
+ /* Old kernels rejected this if no personality
+ * registered */
+ struct mdinfo *sra = sysfs_read(fd, 0, GET_DEVS);
+ struct mdinfo *dv = NULL;
+ if (sra)
+ dv = sra->devs;
+ for ( ; dv ; dv=dv->next)
+ if (dv->disk.major == major(stb.st_rdev) &&
+ dv->disk.minor == minor(stb.st_rdev))
+ break;
+ if (dv)
+ err = sysfs_set_str(sra, dv,
+ "state", "remove");
+ else
+ err = -1;
+ if (sra)
+ sysfs_free(sra);
+ }
+ if (err) {
fprintf(stderr, Name ": hot remove failed "
"for %s: %s\n", dnprintable,
strerror(errno));
+ if (lfd >= 0)
+ close(lfd);
return 1;
}
+ if (tst->ss->external) {
+ /*
+ * Before dropping our exclusive open we make an
+ * attempt at preventing mdmon from seeing an
+ * 'add' event before reconciling this 'remove'
+ * event.
+ */
+ char *name = devnum2devname(fd2devnum(fd));
+
+ if (!name) {
+ fprintf(stderr, Name ": unable to get container name\n");
+ return 1;
+ }
+
+ ping_manager(name);
+ free(name);
+ }
+ close(lfd);
if (verbose >= 0)
fprintf(stderr, Name ": hot removed %s\n",
dnprintable);
projects / thirdparty / mdadm.git / blobdiff