#endif
#include "mdadm.h"
#include "mdmon.h"
+#include <sys/syscall.h>
#include <sys/socket.h>
#include <signal.h>
return newa;
}
-static void write_wakeup(struct supertype *c)
+static void wakeup_monitor(void)
{
- static struct md_generic_cmd cmd = { .action = md_action_ping_monitor };
- int err;
-
- active_cmd = &cmd;
-
- /* send the monitor thread a pointer to the ping action */
- write(c->mgr_pipe[1], &err, 1);
- read(c->mon_pipe[0], &err, 1);
+ /* tgkill(getpid(), mon_tid, SIGUSR1); */
+ int pid = getpid();
+ syscall(SYS_tgkill, pid, mon_tid, SIGUSR1);
}
static void remove_old(void)
if (pending_discard == discard_this)
pending_discard = NULL;
discard_this = NULL;
+ wakeup_monitor();
}
}
*/
remove_old();
while (pending_discard) {
- write_wakeup(container);
while (discard_this == NULL)
sleep(1);
remove_old();
new->replaces = old;
new->next = container->arrays;
container->arrays = new;
- write_wakeup(container);
+ wakeup_monitor();
}
struct metadata_update *update_queue = NULL;
while (update_queue_handled) {
struct metadata_update *this = update_queue_handled;
update_queue_handled = this->next;
-// free(this->buf);
+ free(this->buf);
+ if (this->space)
+ free(this->space);
free(this);
}
if (update_queue == NULL &&
update_queue_pending) {
update_queue = update_queue_pending;
update_queue_pending = NULL;
- write_wakeup(container);
+ wakeup_monitor();
}
}
* and open files for each newdev */
for (d = newdev; d ; d = d->next) {
struct mdinfo *newd;
- if (sysfs_add_disk(&newa->info, d))
+ if (sysfs_add_disk(&newa->info, d) < 0)
continue;
newd = newa->info.devs;
newd->state_fd = sysfs_open(a->devnum,
}
queue_metadata_update(updates);
replace_array(a->container, a, newa);
- sysfs_set_str(&a->info, NULL, "sync_action", "repair");
+ sysfs_set_str(&a->info, NULL, "sync_action", "recover");
}
}
}
+static int aa_ready(struct active_array *aa)
+{
+ struct mdinfo *d;
+ int level = aa->info.array.level;
+
+ for (d = aa->info.devs; d; d = d->next)
+ if (d->state_fd < 0)
+ return 0;
+
+ if (aa->info.state_fd < 0)
+ return 0;
+
+ if (level > 0 && (aa->action_fd < 0 || aa->resync_start_fd < 0))
+ return 0;
+
+ if (!aa->container)
+ return 0;
+
+ return 1;
+}
+
static void manage_new(struct mdstat_ent *mdstat,
struct supertype *container,
struct active_array *victim)
char *inst;
int i;
+ /* check if array is ready to be monitored */
+ if (!mdstat->active)
+ return;
+
+ mdi = sysfs_read(-1, mdstat->devnum,
+ GET_LEVEL|GET_CHUNK|GET_DISKS|GET_COMPONENT|
+ GET_DEVS|GET_OFFSET|GET_SIZE|GET_STATE);
+
new = malloc(sizeof(*new));
+ if (!new || !mdi) {
+ if (mdi)
+ sysfs_free(mdi);
+ if (new)
+ free(new);
+ return;
+ }
memset(new, 0, sizeof(*new));
new->devnum = mdstat->devnum;
inst = &mdstat->metadata_version[10+strlen(container->devname)+1];
- mdi = sysfs_read(-1, new->devnum,
- GET_LEVEL|GET_CHUNK|GET_DISKS|
- GET_DEVS|GET_OFFSET|GET_SIZE|GET_STATE);
- if (!mdi) {
- /* Eeek. Cannot monitor this array.
- * Mark it to be ignored by setting container to NULL
- */
- new->container = NULL;
- replace_array(container, victim, new);
- return;
- }
-
new->info.array = mdi->array;
+ new->info.component_size = mdi->component_size;
for (i = 0; i < new->info.array.raid_disks; i++) {
struct mdinfo *newd = malloc(sizeof(*newd));
newd->prev_state = read_dev_state(newd->state_fd);
newd->curr_state = newd->prev_state;
} else {
- newd->state_fd = -1;
- newd->disk.raid_disk = i;
- newd->prev_state = DS_REMOVE;
- newd->curr_state = DS_REMOVE;
+ /* we cannot properly monitor without all raid_disks */
+ new->container = NULL;
+ break;
}
sprintf(newd->sys_name, "rd%d", i);
newd->next = new->info.devs;
new->info.devs = newd;
}
+
new->action_fd = sysfs_open(new->devnum, NULL, "sync_action");
new->info.state_fd = sysfs_open(new->devnum, NULL, "array_state");
new->resync_start_fd = sysfs_open(new->devnum, NULL, "resync_start");
- new->resync_start = 0;
+ get_resync_start(new);
dprintf("%s: inst: %d action: %d state: %d\n", __func__, atoi(inst),
new->action_fd, new->info.state_fd);
sysfs_free(mdi);
- // finds and compares.
- if (container->ss->open_new(container, new, inst) < 0) {
- // FIXME close all those files
+
+ /* if everything checks out tell the metadata handler we want to
+ * manage this instance
+ */
+ if (!aa_ready(new) || container->ss->open_new(container, new, inst) < 0) {
+ fprintf(stderr, "mdmon: failed to monitor %s\n",
+ mdstat->metadata_version);
new->container = NULL;
+ free_aa(new);
+ } else
replace_array(container, victim, new);
- return;
- }
- replace_array(container, victim, new);
- return;
}
void manage(struct mdstat_ent *mdstat, struct supertype *container)
}
}
-static int handle_message(struct supertype *container, struct md_message *msg)
+static void handle_message(struct supertype *container, struct metadata_update *msg)
{
- int err;
- struct md_generic_cmd *cmd = msg->buf;
+ /* queue this metadata update through to the monitor */
- if (!cmd)
- return 0;
+ struct metadata_update *mu;
- switch (cmd->action) {
- case md_action_remove_device:
-
- /* forward to the monitor */
- active_cmd = cmd;
- write(container->mgr_pipe[1], &err, 1);
- read(container->mon_pipe[0], &err, 1);
- return err;
-
- default:
- return -1;
+ if (msg->len == 0) {
+ int cnt = monitor_loop_cnt;
+ if (cnt & 1)
+ cnt += 2; /* wait until next pselect */
+ else
+ cnt += 3; /* wait for 2 pselects */
+ wakeup_monitor();
+ wait_update_handled();
+ while (monitor_loop_cnt - cnt < 0)
+ usleep(10 * 1000);
+ } else {
+ mu = malloc(sizeof(*mu));
+ mu->len = msg->len;
+ mu->buf = msg->buf;
+ msg->buf = NULL;
+ mu->space = NULL;
+ mu->next = NULL;
+ if (container->ss->prepare_update)
+ container->ss->prepare_update(container, mu);
+ queue_metadata_update(mu);
}
}
void read_sock(struct supertype *container)
{
int fd;
- struct md_message msg;
+ struct metadata_update msg;
int terminate = 0;
long fl;
int tmo = 3; /* 3 second timeout before hanging up the socket */
fcntl(fd, F_SETFL, fl);
do {
- int err;
-
msg.buf = NULL;
/* read and validate the message */
if (receive_message(fd, &msg, tmo) == 0) {
- err = handle_message(container, &msg);
- if (!err)
- ack(fd, msg.seq, tmo);
- else
- nack(fd, err, tmo);
- } else {
+ handle_message(container, &msg);
+ if (ack(fd, tmo) < 0)
+ terminate = 1;
+ } else
terminate = 1;
- nack(fd, -1, tmo);
- }
- if (msg.buf)
- free(msg.buf);
} while (!terminate);
close(fd);
}
-static int woke = 0;
-void wake_me(int sig)
-{
- woke = 1;
-}
-
int exit_now = 0;
int manager_ready = 0;
void do_manager(struct supertype *container)
{
struct mdstat_ent *mdstat;
- sigset_t block, orig;
+ sigset_t set;
- sigemptyset(&block);
- sigaddset(&block, SIGUSR1);
-
- signal(SIGUSR1, wake_me);
+ sigprocmask(SIG_UNBLOCK, NULL, &set);
+ sigdelset(&set, SIGUSR1);
do {
- woke = 0;
if (exit_now)
exit(0);
check_update_queue(container);
manager_ready = 1;
- sigprocmask(SIG_SETMASK, &block, &orig);
- if (woke == 0)
- mdstat_wait_fd(container->sock, &orig);
- sigprocmask(SIG_SETMASK, &orig, NULL);
+
+ mdstat_wait_fd(container->sock, &set);
} while(1);
}
projects / thirdparty / mdadm.git / blobdiff