aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--Documentation/ABI/testing/sysfs-bus-rbd2
-rw-r--r--drivers/block/rbd.c361
-rw-r--r--fs/ceph/debugfs.c6
-rw-r--r--fs/ceph/dir.c24
-rw-r--r--fs/ceph/file.c10
-rw-r--r--fs/ceph/inode.c25
-rw-r--r--fs/ceph/super.c9
-rw-r--r--fs/ceph/super.h66
-rw-r--r--include/linux/ceph/ceph_fs.h19
-rw-r--r--include/linux/ceph/libceph.h1
-rw-r--r--include/linux/ceph/osd_client.h57
-rw-r--r--include/linux/ceph/rados.h39
-rw-r--r--net/ceph/armor.c4
-rw-r--r--net/ceph/ceph_common.c1
-rw-r--r--net/ceph/osd_client.c624
15 files changed, 1018 insertions, 230 deletions
diff --git a/Documentation/ABI/testing/sysfs-bus-rbd b/Documentation/ABI/testing/sysfs-bus-rbd
index 90a87e2..fa72ccb 100644
--- a/Documentation/ABI/testing/sysfs-bus-rbd
+++ b/Documentation/ABI/testing/sysfs-bus-rbd
@@ -1,6 +1,6 @@
What: /sys/bus/rbd/
Date: November 2010
-Contact: Yehuda Sadeh <yehuda@hq.newdream.net>,
+Contact: Yehuda Sadeh <yehuda@newdream.net>,
Sage Weil <sage@newdream.net>
Description:
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index e1e38b1..16dc364 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -31,6 +31,7 @@
#include <linux/ceph/osd_client.h>
#include <linux/ceph/mon_client.h>
#include <linux/ceph/decode.h>
+#include <linux/parser.h>
#include <linux/kernel.h>
#include <linux/device.h>
@@ -54,6 +55,8 @@
#define DEV_NAME_LEN 32
+#define RBD_NOTIFY_TIMEOUT_DEFAULT 10
+
/*
* block device image metadata (in-memory version)
*/
@@ -71,6 +74,12 @@ struct rbd_image_header {
char *snap_names;
u64 *snap_sizes;
+
+ u64 obj_version;
+};
+
+struct rbd_options {
+ int notify_timeout;
};
/*
@@ -78,6 +87,7 @@ struct rbd_image_header {
*/
struct rbd_client {
struct ceph_client *client;
+ struct rbd_options *rbd_opts;
struct kref kref;
struct list_head node;
};
@@ -124,6 +134,9 @@ struct rbd_device {
char pool_name[RBD_MAX_POOL_NAME_LEN];
int poolid;
+ struct ceph_osd_event *watch_event;
+ struct ceph_osd_request *watch_request;
+
char snap_name[RBD_MAX_SNAP_NAME_LEN];
u32 cur_snap; /* index+1 of current snapshot within snap context
0 - for the head */
@@ -177,6 +190,8 @@ static void rbd_put_dev(struct rbd_device *rbd_dev)
put_device(&rbd_dev->dev);
}
+static int __rbd_update_snaps(struct rbd_device *rbd_dev);
+
static int rbd_open(struct block_device *bdev, fmode_t mode)
{
struct gendisk *disk = bdev->bd_disk;
@@ -211,7 +226,8 @@ static const struct block_device_operations rbd_bd_ops = {
* Initialize an rbd client instance.
* We own *opt.
*/
-static struct rbd_client *rbd_client_create(struct ceph_options *opt)
+static struct rbd_client *rbd_client_create(struct ceph_options *opt,
+ struct rbd_options *rbd_opts)
{
struct rbd_client *rbdc;
int ret = -ENOMEM;
@@ -233,6 +249,8 @@ static struct rbd_client *rbd_client_create(struct ceph_options *opt)
if (ret < 0)
goto out_err;
+ rbdc->rbd_opts = rbd_opts;
+
spin_lock(&node_lock);
list_add_tail(&rbdc->node, &rbd_client_list);
spin_unlock(&node_lock);
@@ -267,6 +285,59 @@ static struct rbd_client *__rbd_client_find(struct ceph_options *opt)
}
/*
+ * mount options
+ */
+enum {
+ Opt_notify_timeout,
+ Opt_last_int,
+ /* int args above */
+ Opt_last_string,
+ /* string args above */
+};
+
+static match_table_t rbdopt_tokens = {
+ {Opt_notify_timeout, "notify_timeout=%d"},
+ /* int args above */
+ /* string args above */
+ {-1, NULL}
+};
+
+static int parse_rbd_opts_token(char *c, void *private)
+{
+ struct rbd_options *rbdopt = private;
+ substring_t argstr[MAX_OPT_ARGS];
+ int token, intval, ret;
+
+ token = match_token((char *)c, rbdopt_tokens, argstr);
+ if (token < 0)
+ return -EINVAL;
+
+ if (token < Opt_last_int) {
+ ret = match_int(&argstr[0], &intval);
+ if (ret < 0) {
+ pr_err("bad mount option arg (not int) "
+ "at '%s'\n", c);
+ return ret;
+ }
+ dout("got int token %d val %d\n", token, intval);
+ } else if (token > Opt_last_int && token < Opt_last_string) {
+ dout("got string token %d val %s\n", token,
+ argstr[0].from);
+ } else {
+ dout("got token %d\n", token);
+ }
+
+ switch (token) {
+ case Opt_notify_timeout:
+ rbdopt->notify_timeout = intval;
+ break;
+ default:
+ BUG_ON(token);
+ }
+ return 0;
+}
+
+/*
* Get a ceph client with specific addr and configuration, if one does
* not exist create it.
*/
@@ -276,11 +347,18 @@ static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
struct rbd_client *rbdc;
struct ceph_options *opt;
int ret;
+ struct rbd_options *rbd_opts;
+
+ rbd_opts = kzalloc(sizeof(*rbd_opts), GFP_KERNEL);
+ if (!rbd_opts)
+ return -ENOMEM;
+
+ rbd_opts->notify_timeout = RBD_NOTIFY_TIMEOUT_DEFAULT;
ret = ceph_parse_options(&opt, options, mon_addr,
- mon_addr + strlen(mon_addr), NULL, NULL);
+ mon_addr + strlen(mon_addr), parse_rbd_opts_token, rbd_opts);
if (ret < 0)
- return ret;
+ goto done_err;
spin_lock(&node_lock);
rbdc = __rbd_client_find(opt);
@@ -296,13 +374,18 @@ static int rbd_get_client(struct rbd_device *rbd_dev, const char *mon_addr,
}
spin_unlock(&node_lock);
- rbdc = rbd_client_create(opt);
- if (IS_ERR(rbdc))
- return PTR_ERR(rbdc);
+ rbdc = rbd_client_create(opt, rbd_opts);
+ if (IS_ERR(rbdc)) {
+ ret = PTR_ERR(rbdc);
+ goto done_err;
+ }
rbd_dev->rbd_client = rbdc;
rbd_dev->client = rbdc->client;
return 0;
+done_err:
+ kfree(rbd_opts);
+ return ret;
}
/*
@@ -318,6 +401,7 @@ static void rbd_client_release(struct kref *kref)
spin_unlock(&node_lock);
ceph_destroy_client(rbdc->client);
+ kfree(rbdc->rbd_opts);
kfree(rbdc);
}
@@ -666,7 +750,9 @@ static int rbd_do_request(struct request *rq,
struct ceph_osd_req_op *ops,
int num_reply,
void (*rbd_cb)(struct ceph_osd_request *req,
- struct ceph_msg *msg))
+ struct ceph_msg *msg),
+ struct ceph_osd_request **linger_req,
+ u64 *ver)
{
struct ceph_osd_request *req;
struct ceph_file_layout *layout;
@@ -729,12 +815,20 @@ static int rbd_do_request(struct request *rq,
req->r_oid, req->r_oid_len);
up_read(&header->snap_rwsem);
+ if (linger_req) {
+ ceph_osdc_set_request_linger(&dev->client->osdc, req);
+ *linger_req = req;
+ }
+
ret = ceph_osdc_start_request(&dev->client->osdc, req, false);
if (ret < 0)
goto done_err;
if (!rbd_cb) {
ret = ceph_osdc_wait_request(&dev->client->osdc, req);
+ if (ver)
+ *ver = le64_to_cpu(req->r_reassert_version.version);
+ dout("reassert_ver=%lld\n", le64_to_cpu(req->r_reassert_version.version));
ceph_osdc_put_request(req);
}
return ret;
@@ -789,6 +883,11 @@ static void rbd_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg)
kfree(req_data);
}
+static void rbd_simple_req_cb(struct ceph_osd_request *req, struct ceph_msg *msg)
+{
+ ceph_osdc_put_request(req);
+}
+
/*
* Do a synchronous ceph osd operation
*/
@@ -801,7 +900,9 @@ static int rbd_req_sync_op(struct rbd_device *dev,
int num_reply,
const char *obj,
u64 ofs, u64 len,
- char *buf)
+ char *buf,
+ struct ceph_osd_request **linger_req,
+ u64 *ver)
{
int ret;
struct page **pages;
@@ -833,7 +934,8 @@ static int rbd_req_sync_op(struct rbd_device *dev,
flags,
ops,
2,
- NULL);
+ NULL,
+ linger_req, ver);
if (ret < 0)
goto done_ops;
@@ -893,7 +995,7 @@ static int rbd_do_op(struct request *rq,
flags,
ops,
num_reply,
- rbd_req_cb);
+ rbd_req_cb, 0, NULL);
done:
kfree(seg_name);
return ret;
@@ -940,18 +1042,174 @@ static int rbd_req_sync_read(struct rbd_device *dev,
u64 snapid,
const char *obj,
u64 ofs, u64 len,
- char *buf)
+ char *buf,
+ u64 *ver)
{
return rbd_req_sync_op(dev, NULL,
(snapid ? snapid : CEPH_NOSNAP),
CEPH_OSD_OP_READ,
CEPH_OSD_FLAG_READ,
NULL,
- 1, obj, ofs, len, buf);
+ 1, obj, ofs, len, buf, NULL, ver);
}
/*
- * Request sync osd read
+ * Request sync osd watch
+ */
+static int rbd_req_sync_notify_ack(struct rbd_device *dev,
+ u64 ver,
+ u64 notify_id,
+ const char *obj)
+{
+ struct ceph_osd_req_op *ops;
+ struct page **pages = NULL;
+ int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_NOTIFY_ACK, 0);
+ if (ret < 0)
+ return ret;
+
+ ops[0].watch.ver = cpu_to_le64(dev->header.obj_version);
+ ops[0].watch.cookie = notify_id;
+ ops[0].watch.flag = 0;
+
+ ret = rbd_do_request(NULL, dev, NULL, CEPH_NOSNAP,
+ obj, 0, 0, NULL,
+ pages, 0,
+ CEPH_OSD_FLAG_READ,
+ ops,
+ 1,
+ rbd_simple_req_cb, 0, NULL);
+
+ rbd_destroy_ops(ops);
+ return ret;
+}
+
+static void rbd_watch_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
+{
+ struct rbd_device *dev = (struct rbd_device *)data;
+ if (!dev)
+ return;
+
+ dout("rbd_watch_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name,
+ notify_id, (int)opcode);
+ mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
+ __rbd_update_snaps(dev);
+ mutex_unlock(&ctl_mutex);
+
+ rbd_req_sync_notify_ack(dev, ver, notify_id, dev->obj_md_name);
+}
+
+/*
+ * Request sync osd watch
+ */
+static int rbd_req_sync_watch(struct rbd_device *dev,
+ const char *obj,
+ u64 ver)
+{
+ struct ceph_osd_req_op *ops;
+ struct ceph_osd_client *osdc = &dev->client->osdc;
+
+ int ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_WATCH, 0);
+ if (ret < 0)
+ return ret;
+
+ ret = ceph_osdc_create_event(osdc, rbd_watch_cb, 0,
+ (void *)dev, &dev->watch_event);
+ if (ret < 0)
+ goto fail;
+
+ ops[0].watch.ver = cpu_to_le64(ver);
+ ops[0].watch.cookie = cpu_to_le64(dev->watch_event->cookie);
+ ops[0].watch.flag = 1;
+
+ ret = rbd_req_sync_op(dev, NULL,
+ CEPH_NOSNAP,
+ 0,
+ CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
+ ops,
+ 1, obj, 0, 0, NULL,
+ &dev->watch_request, NULL);
+
+ if (ret < 0)
+ goto fail_event;
+
+ rbd_destroy_ops(ops);
+ return 0;
+
+fail_event:
+ ceph_osdc_cancel_event(dev->watch_event);
+ dev->watch_event = NULL;
+fail:
+ rbd_destroy_ops(ops);
+ return ret;
+}
+
+struct rbd_notify_info {
+ struct rbd_device *dev;
+};
+
+static void rbd_notify_cb(u64 ver, u64 notify_id, u8 opcode, void *data)
+{
+ struct rbd_device *dev = (struct rbd_device *)data;
+ if (!dev)
+ return;
+
+ dout("rbd_notify_cb %s notify_id=%lld opcode=%d\n", dev->obj_md_name,
+ notify_id, (int)opcode);
+}
+
+/*
+ * Request sync osd notify
+ */
+static int rbd_req_sync_notify(struct rbd_device *dev,
+ const char *obj)
+{
+ struct ceph_osd_req_op *ops;
+ struct ceph_osd_client *osdc = &dev->client->osdc;
+ struct ceph_osd_event *event;
+ struct rbd_notify_info info;
+ int payload_len = sizeof(u32) + sizeof(u32);
+ int ret;
+
+ ret = rbd_create_rw_ops(&ops, 1, CEPH_OSD_OP_NOTIFY, payload_len);
+ if (ret < 0)
+ return ret;
+
+ info.dev = dev;
+
+ ret = ceph_osdc_create_event(osdc, rbd_notify_cb, 1,
+ (void *)&info, &event);
+ if (ret < 0)
+ goto fail;
+
+ ops[0].watch.ver = 1;
+ ops[0].watch.flag = 1;
+ ops[0].watch.cookie = event->cookie;
+ ops[0].watch.prot_ver = RADOS_NOTIFY_VER;
+ ops[0].watch.timeout = 12;
+
+ ret = rbd_req_sync_op(dev, NULL,
+ CEPH_NOSNAP,
+ 0,
+ CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
+ ops,
+ 1, obj, 0, 0, NULL, NULL, NULL);
+ if (ret < 0)
+ goto fail_event;
+
+ ret = ceph_osdc_wait_event(event, CEPH_OSD_TIMEOUT_DEFAULT);
+ dout("ceph_osdc_wait_event returned %d\n", ret);
+ rbd_destroy_ops(ops);
+ return 0;
+
+fail_event:
+ ceph_osdc_cancel_event(event);
+fail:
+ rbd_destroy_ops(ops);
+ return ret;
+}
+
+/*
+ * Request sync osd rollback
*/
static int rbd_req_sync_rollback_obj(struct rbd_device *dev,
u64 snapid,
@@ -969,13 +1227,10 @@ static int rbd_req_sync_rollback_obj(struct rbd_device *dev,
0,
CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
ops,
- 1, obj, 0, 0, NULL);
+ 1, obj, 0, 0, NULL, NULL, NULL);
rbd_destroy_ops(ops);
- if (ret < 0)
- return ret;
-
return ret;
}
@@ -987,7 +1242,8 @@ static int rbd_req_sync_exec(struct rbd_device *dev,
const char *cls,
const char *method,
const char *data,
- int len)
+ int len,
+ u64 *ver)
{
struct ceph_osd_req_op *ops;
int cls_len = strlen(cls);
@@ -1010,7 +1266,7 @@ static int rbd_req_sync_exec(struct rbd_device *dev,
0,
CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK,
ops,
- 1, obj, 0, 0, NULL);
+ 1, obj, 0, 0, NULL, NULL, ver);
rbd_destroy_ops(ops);
@@ -1156,6 +1412,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
struct rbd_image_header_ondisk *dh;
int snap_count = 0;
u64 snap_names_len = 0;
+ u64 ver;
while (1) {
int len = sizeof(*dh) +
@@ -1171,7 +1428,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
NULL, CEPH_NOSNAP,
rbd_dev->obj_md_name,
0, len,
- (char *)dh);
+ (char *)dh, &ver);
if (rc < 0)
goto out_dh;
@@ -1188,6 +1445,7 @@ static int rbd_read_header(struct rbd_device *rbd_dev,
}
break;
}
+ header->obj_version = ver;
out_dh:
kfree(dh);
@@ -1205,6 +1463,7 @@ static int rbd_header_add_snap(struct rbd_device *dev,
u64 new_snapid;
int ret;
void *data, *data_start, *data_end;
+ u64 ver;
/* we should create a snapshot only if we're pointing at the head */
if (dev->cur_snap)
@@ -1227,7 +1486,7 @@ static int rbd_header_add_snap(struct rbd_device *dev,
ceph_encode_64_safe(&data, data_end, new_snapid, bad);
ret = rbd_req_sync_exec(dev, dev->obj_md_name, "rbd", "snap_add",
- data_start, data - data_start);
+ data_start, data - data_start, &ver);
kfree(data_start);
@@ -1259,6 +1518,7 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
int ret;
struct rbd_image_header h;
u64 snap_seq;
+ int follow_seq = 0;
ret = rbd_read_header(rbd_dev, &h);
if (ret < 0)
@@ -1267,6 +1527,11 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
down_write(&rbd_dev->header.snap_rwsem);
snap_seq = rbd_dev->header.snapc->seq;
+ if (rbd_dev->header.total_snaps &&
+ rbd_dev->header.snapc->snaps[0] == snap_seq)
+ /* pointing at the head, will need to follow that
+ if head moves */
+ follow_seq = 1;
kfree(rbd_dev->header.snapc);
kfree(rbd_dev->header.snap_names);
@@ -1277,7 +1542,10 @@ static int __rbd_update_snaps(struct rbd_device *rbd_dev)
rbd_dev->header.snap_names = h.snap_names;
rbd_dev->header.snap_names_len = h.snap_names_len;
rbd_dev->header.snap_sizes = h.snap_sizes;
- rbd_dev->header.snapc->seq = snap_seq;
+ if (follow_seq)
+ rbd_dev->header.snapc->seq = rbd_dev->header.snapc->snaps[0];
+ else
+ rbd_dev->header.snapc->seq = snap_seq;
ret = __rbd_init_snaps_header(rbd_dev);
@@ -1699,7 +1967,28 @@ static void rbd_bus_del_dev(struct rbd_device *rbd_dev)
device_unregister(&rbd_dev->dev);
}
-static ssize_t rbd_add(struct bus_type *bus, const char *buf, size_t count)
+static int rbd_init_watch_dev(struct rbd_device *rbd_dev)
+{
+ int ret, rc;
+
+ do {
+ ret = rbd_req_sync_watch(rbd_dev, rbd_dev->obj_md_name,
+ rbd_dev->header.obj_version);
+ if (ret == -ERANGE) {
+ mutex_lock_nested(&ctl_mutex, SINGLE_DEPTH_NESTING);
+ rc = __rbd_update_snaps(rbd_dev);
+ mutex_unlock(&ctl_mutex);
+ if (rc < 0)
+ return rc;
+ }
+ } while (ret == -ERANGE);
+
+ return ret;
+}
+
+static ssize_t rbd_add(struct bus_type *bus,
+ const char *buf,
+ size_t count)
{
struct ceph_osd_client *osdc;
struct rbd_device *rbd_dev;
@@ -1797,6 +2086,10 @@ static ssize_t rbd_add(struct bus_type *bus, const char *buf, size_t count)
if (rc)
goto err_out_bus;
+ rc = rbd_init_watch_dev(rbd_dev);
+ if (rc)
+ goto err_out_bus;
+
return count;
err_out_bus:
@@ -1849,6 +2142,12 @@ static void rbd_dev_release(struct device *dev)
struct rbd_device *rbd_dev =
container_of(dev, struct rbd_device, dev);
+ if (rbd_dev->watch_request)
+ ceph_osdc_unregister_linger_request(&rbd_dev->client->osdc,
+ rbd_dev->watch_request);
+ if (rbd_dev->watch_event)
+ ceph_osdc_cancel_event(rbd_dev->watch_event);
+
rbd_put_client(rbd_dev);
/* clean up and free blkdev */
@@ -1914,14 +2213,24 @@ static ssize_t rbd_snap_add(struct device *dev,
ret = rbd_header_add_snap(rbd_dev,
name, GFP_KERNEL);
if (ret < 0)
- goto done_unlock;
+ goto err_unlock;
ret = __rbd_update_snaps(rbd_dev);
if (ret < 0)
- goto done_unlock;
+ goto err_unlock;
+
+ /* shouldn't hold ctl_mutex when notifying.. notify might
+ trigger a watch callback that would need to get that mutex */
+ mutex_unlock(&ctl_mutex);
+
+ /* make a best effort, don't error if failed */
+ rbd_req_sync_notify(rbd_dev, rbd_dev->obj_md_name);
ret = count;
-done_unlock:
+ kfree(name);
+ return ret;
+
+err_unlock:
mutex_unlock(&ctl_mutex);
kfree(name);
return ret;
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index 08f65fa..0dba691 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -210,8 +210,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
if (!fsc->debugfs_congestion_kb)
goto out;
- dout("a\n");
-
snprintf(name, sizeof(name), "../../bdi/%s",
dev_name(fsc->backing_dev_info.dev));
fsc->debugfs_bdi =
@@ -221,7 +219,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
if (!fsc->debugfs_bdi)
goto out;
- dout("b\n");
fsc->debugfs_mdsmap = debugfs_create_file("mdsmap",
0600,
fsc->client->debugfs_dir,
@@ -230,7 +227,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
if (!fsc->debugfs_mdsmap)
goto out;
- dout("ca\n");
fsc->debugfs_mdsc = debugfs_create_file("mdsc",
0600,
fsc->client->debugfs_dir,
@@ -239,7 +235,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
if (!fsc->debugfs_mdsc)
goto out;
- dout("da\n");
fsc->debugfs_caps = debugfs_create_file("caps",
0400,
fsc->client->debugfs_dir,
@@ -248,7 +243,6 @@ int ceph_fs_debugfs_init(struct ceph_fs_client *fsc)
if (!fsc->debugfs_caps)
goto out;
- dout("ea\n");
fsc->debugfs_dentry_lru = debugfs_create_file("dentry_lru",
0600,
fsc->client->debugfs_dir,
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index ebafa65..1a867a3 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -161,7 +161,7 @@ more:
filp->f_pos = di->offset;
err = filldir(dirent, dentry->d_name.name,
dentry->d_name.len, di->offset,
- dentry->d_inode->i_ino,
+ ceph_translate_ino(dentry->d_sb, dentry->d_inode->i_ino),
dentry->d_inode->i_mode >> 12);
if (last) {
@@ -245,15 +245,17 @@ static int ceph_readdir(struct file *filp, void *dirent, filldir_t filldir)
dout("readdir off 0 -> '.'\n");
if (filldir(dirent, ".", 1, ceph_make_fpos(0, 0),
- inode->i_ino, inode->i_mode >> 12) < 0)
+ ceph_translate_ino(inode->i_sb, inode->i_ino),
+ inode->i_mode >> 12) < 0)
return 0;
filp->f_pos = 1;
off = 1;
}
if (filp->f_pos == 1) {
+ ino_t ino = filp->f_dentry->d_parent->d_inode->i_ino;
dout("readdir off 1 -> '..'\n");
if (filldir(dirent, "..", 2, ceph_make_fpos(0, 1),
- filp->f_dentry->d_parent->d_inode->i_ino,
+ ceph_translate_ino(inode->i_sb, ino),
inode->i_mode >> 12) < 0)
return 0;
filp->f_pos = 2;
@@ -377,7 +379,8 @@ more:
if (filldir(dirent,
rinfo->dir_dname[off - fi->offset],
rinfo->dir_dname_len[off - fi->offset],
- pos, ino, ftype) < 0) {
+ pos,
+ ceph_translate_ino(inode->i_sb, ino), ftype) < 0) {
dout("filldir stopping us...\n");
return 0;
}
@@ -1024,14 +1027,13 @@ out_touch:
}
/*
- * When a dentry is released, clear the dir I_COMPLETE if it was part
- * of the current dir gen or if this is in the snapshot namespace.
+ * Release our ceph_dentry_info.
*/
-static void ceph_dentry_release(struct dentry *dentry)
+static void ceph_d_release(struct dentry *dentry)
{
struct ceph_dentry_info *di = ceph_dentry(dentry);
- dout("dentry_release %p\n", dentry);
+ dout("d_release %p\n", dentry);
if (di) {
ceph_dentry_lru_del(dentry);
if (di->lease_session)
@@ -1256,14 +1258,14 @@ const struct inode_operations ceph_dir_iops = {
const struct dentry_operations ceph_dentry_ops = {
.d_revalidate = ceph_d_revalidate,
- .d_release = ceph_dentry_release,
+ .d_release = ceph_d_release,
};
const struct dentry_operations ceph_snapdir_dentry_ops = {
.d_revalidate = ceph_snapdir_d_revalidate,
- .d_release = ceph_dentry_release,
+ .d_release = ceph_d_release,
};
const struct dentry_operations ceph_snap_dentry_ops = {
- .d_release = ceph_dentry_release,
+ .d_release = ceph_d_release,
};
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 7d0e4a8..159b512 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -564,11 +564,19 @@ more:
* start_request so that a tid has been assigned.
*/
spin_lock(&ci->i_unsafe_lock);
- list_add(&req->r_unsafe_item, &ci->i_unsafe_writes);
+ list_add_tail(&req->r_unsafe_item,
+ &ci->i_unsafe_writes);
spin_unlock(&ci->i_unsafe_lock);
ceph_get_cap_refs(ci, CEPH_CAP_FILE_WR);
}
+
ret = ceph_osdc_wait_request(&fsc->client->osdc, req);
+ if (ret < 0 && req->r_safe_callback) {
+ spin_lock(&ci->i_unsafe_lock);
+ list_del_init(&req->r_unsafe_item);
+ spin_unlock(&ci->i_unsafe_lock);
+ ceph_put_cap_refs(ci, CEPH_CAP_FILE_WR);
+ }
}
if (file->f_flags & O_DIRECT)
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index 193bfa5..b54c97d 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -36,6 +36,13 @@ static void ceph_vmtruncate_work(struct work_struct *work);
/*
* find or create an inode, given the ceph ino number
*/
+static int ceph_set_ino_cb(struct inode *inode, void *data)
+{
+ ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
+ inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
+ return 0;
+}
+
struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino)
{
struct inode *inode;
@@ -1030,9 +1037,6 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
dout("fill_trace doing d_move %p -> %p\n",
req->r_old_dentry, dn);
- /* d_move screws up d_subdirs order */
- ceph_i_clear(dir, CEPH_I_COMPLETE);
-
d_move(req->r_old_dentry, dn);
dout(" src %p '%.*s' dst %p '%.*s'\n",
req->r_old_dentry,
@@ -1044,12 +1048,15 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req,
rehashing bug in vfs_rename_dir */
ceph_invalidate_dentry_lease(dn);
- /* take overwritten dentry's readdir offset */
- dout("dn %p gets %p offset %lld (old offset %lld)\n",
- req->r_old_dentry, dn, ceph_dentry(dn)->offset,
+ /*
+ * d_move() puts the renamed dentry at the end of
+ * d_subdirs. We need to assign it an appropriate
+ * directory offset so we can behave when holding
+ * I_COMPLETE.
+ */
+ ceph_set_dentry_offset(req->r_old_dentry);
+ dout("dn %p gets new offset %lld\n", req->r_old_dentry,
ceph_dentry(req->r_old_dentry)->offset);
- ceph_dentry(req->r_old_dentry)->offset =
- ceph_dentry(dn)->offset;
dn = req->r_old_dentry; /* use old_dentry */
in = dn->d_inode;
@@ -1809,7 +1816,7 @@ int ceph_getattr(struct vfsmount *mnt, struct dentry *dentry,
err = ceph_do_getattr(inode, CEPH_STAT_CAP_INODE_ALL);
if (!err) {
generic_fillattr(inode, stat);
- stat->ino = inode->i_ino;
+ stat->ino = ceph_translate_ino(inode->i_sb, inode->i_ino);
if (ceph_snap(inode) != CEPH_NOSNAP)
stat->dev = ceph_snap(inode);
else
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 9c50854..a9e78b4 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -131,6 +131,7 @@ enum {
Opt_rbytes,
Opt_norbytes,
Opt_noasyncreaddir,
+ Opt_ino32,
};
static match_table_t fsopt_tokens = {
@@ -150,6 +151,7 @@ static match_table_t fsopt_tokens = {
{Opt_rbytes, "rbytes"},
{Opt_norbytes, "norbytes"},
{Opt_noasyncreaddir, "noasyncreaddir"},
+ {Opt_ino32, "ino32"},
{-1, NULL}
};
@@ -225,6 +227,9 @@ static int parse_fsopt_token(char *c, void *private)
case Opt_noasyncreaddir:
fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR;
break;
+ case Opt_ino32:
+ fsopt->flags |= CEPH_MOUNT_OPT_INO32;
+ break;
default:
BUG_ON(token);
}
@@ -288,7 +293,7 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
fsopt->sb_flags = flags;
fsopt->flags = CEPH_MOUNT_OPT_DEFAULT;
- fsopt->rsize = CEPH_MOUNT_RSIZE_DEFAULT;
+ fsopt->rsize = CEPH_RSIZE_DEFAULT;
fsopt->snapdir_name = kstrdup(CEPH_SNAPDIRNAME_DEFAULT, GFP_KERNEL);
fsopt->caps_wanted_delay_min = CEPH_CAPS_WANTED_DELAY_MIN_DEFAULT;
fsopt->caps_wanted_delay_max = CEPH_CAPS_WANTED_DELAY_MAX_DEFAULT;
@@ -370,7 +375,7 @@ static int ceph_show_options(struct seq_file *m, struct vfsmount *mnt)
if (fsopt->wsize)
seq_printf(m, ",wsize=%d", fsopt->wsize);
- if (fsopt->rsize != CEPH_MOUNT_RSIZE_DEFAULT)
+ if (fsopt->rsize != CEPH_RSIZE_DEFAULT)
seq_printf(m, ",rsize=%d", fsopt->rsize);
if (fsopt->congestion_kb != default_congestion_kb())
seq_printf(m, ",write_congestion_kb=%d", fsopt->congestion_kb);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 20b907d..619fe71 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -27,6 +27,7 @@
#define CEPH_MOUNT_OPT_DIRSTAT (1<<4) /* `cat dirname` for stats */
#define CEPH_MOUNT_OPT_RBYTES (1<<5) /* dir st_bytes = rbytes */
#define CEPH_MOUNT_OPT_NOASYNCREADDIR (1<<7) /* no dcache readdir */
+#define CEPH_MOUNT_OPT_INO32 (1<<8) /* 32 bit inos */
#define CEPH_MOUNT_OPT_DEFAULT (CEPH_MOUNT_OPT_RBYTES)
@@ -35,6 +36,7 @@
#define ceph_test_mount_opt(fsc, opt) \
(!!((fsc)->mount_options->flags & CEPH_MOUNT_OPT_##opt))
+#define CEPH_RSIZE_DEFAULT (512*1024) /* readahead */
#define CEPH_MAX_READDIR_DEFAULT 1024
#define CEPH_MAX_READDIR_BYTES_DEFAULT (512*1024)
#define CEPH_SNAPDIRNAME_DEFAULT ".snap"
@@ -319,6 +321,16 @@ static inline struct ceph_inode_info *ceph_inode(struct inode *inode)
return container_of(inode, struct ceph_inode_info, vfs_inode);
}
+static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
+{
+ return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
+}
+
+static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
+{
+ return (struct ceph_fs_client *)sb->s_fs_info;
+}
+
static inline struct ceph_vino ceph_vino(struct inode *inode)
{
return ceph_inode(inode)->i_vino;
@@ -327,19 +339,49 @@ static inline struct ceph_vino ceph_vino(struct inode *inode)
/*
* ino_t is <64 bits on many architectures, blech.
*
- * don't include snap in ino hash, at least for now.
+ * i_ino (kernel inode) st_ino (userspace)
+ * i386 32 32
+ * x86_64+ino32 64 32
+ * x86_64 64 64
+ */
+static inline u32 ceph_ino_to_ino32(ino_t ino)
+{
+ ino ^= ino >> (sizeof(ino) * 8 - 32);
+ if (!ino)
+ ino = 1;
+ return ino;
+}
+
+/*
+ * kernel i_ino value
*/
static inline ino_t ceph_vino_to_ino(struct ceph_vino vino)
{
ino_t ino = (ino_t)vino.ino; /* ^ (vino.snap << 20); */
#if BITS_PER_LONG == 32
- ino ^= vino.ino >> (sizeof(u64)-sizeof(ino_t)) * 8;
- if (!ino)
- ino = 1;
+ ino = ceph_ino_to_ino32(ino);
#endif
return ino;
}
+/*
+ * user-visible ino (stat, filldir)
+ */
+#if BITS_PER_LONG == 32
+static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
+{
+ return ino;
+}
+#else
+static inline ino_t ceph_translate_ino(struct super_block *sb, ino_t ino)
+{
+ if (ceph_test_mount_opt(ceph_sb_to_client(sb), INO32))
+ ino = ceph_ino_to_ino32(ino);
+ return ino;
+}
+#endif
+
+
/* for printf-style formatting */
#define ceph_vinop(i) ceph_inode(i)->i_vino.ino, ceph_inode(i)->i_vino.snap
@@ -428,13 +470,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off)
return ((loff_t)frag << 32) | (loff_t)off;
}
-static inline int ceph_set_ino_cb(struct inode *inode, void *data)
-{
- ceph_inode(inode)->i_vino = *(struct ceph_vino *)data;
- inode->i_ino = ceph_vino_to_ino(*(struct ceph_vino *)data);
- return 0;
-}
-
/*
* caps helpers
*/
@@ -503,15 +538,6 @@ extern void ceph_reservation_status(struct ceph_fs_client *client,
int *total, int *avail, int *used,
int *reserved, int *min);
-static inline struct ceph_fs_client *ceph_inode_to_client(struct inode *inode)
-{
- return (struct ceph_fs_client *)inode->i_sb->s_fs_info;
-}
-
-static inline struct ceph_fs_client *ceph_sb_to_client(struct super_block *sb)
-{
- return (struct ceph_fs_client *)sb->s_fs_info;
-}
/*
diff --git a/include/linux/ceph/ceph_fs.h b/include/linux/ceph/ceph_fs.h
index 09dcc0c..b8e995f 100644
--- a/include/linux/ceph/ceph_fs.h
+++ b/include/linux/ceph/ceph_fs.h
@@ -136,9 +136,18 @@ struct ceph_dir_layout {
/* osd */
-#define CEPH_MSG_OSD_MAP 41
-#define CEPH_MSG_OSD_OP 42
-#define CEPH_MSG_OSD_OPREPLY 43
+#define CEPH_MSG_OSD_MAP 41
+#define CEPH_MSG_OSD_OP 42
+#define CEPH_MSG_OSD_OPREPLY 43
+#define CEPH_MSG_WATCH_NOTIFY 44
+
+
+/* watch-notify operations */
+enum {
+ WATCH_NOTIFY = 1, /* notifying watcher */
+ WATCH_NOTIFY_COMPLETE = 2, /* notifier notified when done */
+};
+
/* pool operations */
enum {
@@ -213,8 +222,10 @@ struct ceph_client_mount {
struct ceph_mon_request_header monhdr;
} __attribute__ ((packed));
+#define CEPH_SUBSCRIBE_ONETIME 1 /* i want only 1 update after have */
+
struct ceph_mon_subscribe_item {
- __le64 have_version; __le64 have;
+ __le64 have_version; __le64 have;
__u8 onetime;
} __attribute__ ((packed));
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 72c72bf..0d2e0ff 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -71,7 +71,6 @@ struct ceph_options {
#define CEPH_OSD_TIMEOUT_DEFAULT 60 /* seconds */
#define CEPH_OSD_KEEPALIVE_DEFAULT 5
#define CEPH_OSD_IDLE_TTL_DEFAULT 60
-#define CEPH_MOUNT_RSIZE_DEFAULT (512*1024) /* readahead */
#define CEPH_MSG_MAX_FRONT_LEN (16*1024*1024)
#define CEPH_MSG_MAX_DATA_LEN (16*1024*1024)
diff --git a/include/linux/ceph/osd_client.h b/include/linux/ceph/osd_client.h
index a1af296..f88eacb 100644
--- a/include/linux/ceph/osd_client.h
+++ b/include/linux/ceph/osd_client.h
@@ -32,6 +32,7 @@ struct ceph_osd {
struct rb_node o_node;
struct ceph_connection o_con;
struct list_head o_requests;
+ struct list_head o_linger_requests;
struct list_head o_osd_lru;
struct ceph_authorizer *o_authorizer;
void *o_authorizer_buf, *o_authorizer_reply_buf;
@@ -47,6 +48,8 @@ struct ceph_osd_request {
struct rb_node r_node;
struct list_head r_req_lru_item;
struct list_head r_osd_item;
+ struct list_head r_linger_item;
+ struct list_head r_linger_osd;
struct ceph_osd *r_osd;
struct ceph_pg r_pgid;
int r_pg_osds[CEPH_PG_MAX_SIZE];
@@ -59,6 +62,7 @@ struct ceph_osd_request {
int r_flags; /* any additional flags for the osd */
u32 r_sent; /* >0 if r_request is sending/sent */
int r_got_reply;
+ int r_linger;
struct ceph_osd_client *r_osdc;
struct kref r_kref;
@@ -74,7 +78,6 @@ struct ceph_osd_request {
char r_oid[40]; /* object name */
int r_oid_len;
unsigned long r_stamp; /* send OR check time */
- bool r_resend; /* msg send failed, needs retry */
struct ceph_file_layout r_file_layout;
struct ceph_snap_context *r_snapc; /* snap context for writes */
@@ -90,6 +93,26 @@ struct ceph_osd_request {
struct ceph_pagelist *r_trail; /* trailing part of the data */
};
+struct ceph_osd_event {
+ u64 cookie;
+ int one_shot;
+ struct ceph_osd_client *osdc;
+ void (*cb)(u64, u64, u8, void *);
+ void *data;
+ struct rb_node node;
+ struct list_head osd_node;
+ struct kref kref;
+ struct completion completion;
+};
+
+struct ceph_osd_event_work {
+ struct work_struct work;
+ struct ceph_osd_event *event;
+ u64 ver;
+ u64 notify_id;
+ u8 opcode;
+};
+
struct ceph_osd_client {
struct ceph_client *client;
@@ -104,7 +127,10 @@ struct ceph_osd_client {
u64 timeout_tid; /* tid of timeout triggering rq */
u64 last_tid; /* tid of last request */
struct rb_root requests; /* pending requests */
- struct list_head req_lru; /* pending requests lru */
+ struct list_head req_lru; /* in-flight lru */
+ struct list_head req_unsent; /* unsent/need-resend queue */
+ struct list_head req_notarget; /* map to no osd */
+ struct list_head req_linger; /* lingering requests */
int num_requests;
struct delayed_work timeout_work;
struct delayed_work osds_timeout_work;
@@ -116,6 +142,12 @@ struct ceph_osd_client {
struct ceph_msgpool msgpool_op;
struct ceph_msgpool msgpool_op_reply;
+
+ spinlock_t event_lock;
+ struct rb_root event_tree;
+ u64 event_count;
+
+ struct workqueue_struct *notify_wq;
};
struct ceph_osd_req_op {
@@ -150,6 +182,13 @@ struct ceph_osd_req_op {
struct {
u64 snapid;
} snap;
+ struct {
+ u64 cookie;
+ u64 ver;
+ __u8 flag;
+ u32 prot_ver;
+ u32 timeout;
+ } watch;
};
u32 payload_len;
};
@@ -198,6 +237,11 @@ extern struct ceph_osd_request *ceph_osdc_new_request(struct ceph_osd_client *,
bool use_mempool, int num_reply,
int page_align);
+extern void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
+extern void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
+
static inline void ceph_osdc_get_request(struct ceph_osd_request *req)
{
kref_get(&req->r_kref);
@@ -233,5 +277,14 @@ extern int ceph_osdc_writepages(struct ceph_osd_client *osdc,
struct page **pages, int nr_pages,
int flags, int do_sync, bool nofail);
+/* watch/notify events */
+extern int ceph_osdc_create_event(struct ceph_osd_client *osdc,
+ void (*event_cb)(u64, u64, u8, void *),
+ int one_shot, void *data,
+ struct ceph_osd_event **pevent);
+extern void ceph_osdc_cancel_event(struct ceph_osd_event *event);
+extern int ceph_osdc_wait_event(struct ceph_osd_event *event,
+ unsigned long timeout);
+extern void ceph_osdc_put_event(struct ceph_osd_event *event);
#endif
diff --git a/include/linux/ceph/rados.h b/include/linux/ceph/rados.h
index 6d5247f..0a99099 100644
--- a/include/linux/ceph/rados.h
+++ b/include/linux/ceph/rados.h
@@ -12,9 +12,9 @@
* osdmap encoding versions
*/
#define CEPH_OSDMAP_INC_VERSION 5
-#define CEPH_OSDMAP_INC_VERSION_EXT 5
+#define CEPH_OSDMAP_INC_VERSION_EXT 6
#define CEPH_OSDMAP_VERSION 5
-#define CEPH_OSDMAP_VERSION_EXT 5
+#define CEPH_OSDMAP_VERSION_EXT 6
/*
* fs id
@@ -181,9 +181,17 @@ enum {
/* read */
CEPH_OSD_OP_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 1,
CEPH_OSD_OP_STAT = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 2,
+ CEPH_OSD_OP_MAPEXT = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 3,
/* fancy read */
- CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,
+ CEPH_OSD_OP_MASKTRUNC = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 4,
+ CEPH_OSD_OP_SPARSE_READ = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 5,
+
+ CEPH_OSD_OP_NOTIFY = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 6,
+ CEPH_OSD_OP_NOTIFY_ACK = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 7,
+
+ /* versioning */
+ CEPH_OSD_OP_ASSERT_VER = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_DATA | 8,
/* write */
CEPH_OSD_OP_WRITE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 1,
@@ -205,6 +213,8 @@ enum {
CEPH_OSD_OP_CREATE = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 13,
CEPH_OSD_OP_ROLLBACK= CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 14,
+ CEPH_OSD_OP_WATCH = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_DATA | 15,
+
/** attrs **/
/* read */
CEPH_OSD_OP_GETXATTR = CEPH_OSD_OP_MODE_RD | CEPH_OSD_OP_TYPE_ATTR | 1,
@@ -218,11 +228,14 @@ enum {
CEPH_OSD_OP_RMXATTR = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_ATTR | 4,
/** subop **/
- CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB | 1,
- CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB | 2,
- CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB | 3,
- CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4,
- CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB | 5,
+ CEPH_OSD_OP_PULL = CEPH_OSD_OP_MODE_SUB | 1,
+ CEPH_OSD_OP_PUSH = CEPH_OSD_OP_MODE_SUB | 2,
+ CEPH_OSD_OP_BALANCEREADS = CEPH_OSD_OP_MODE_SUB | 3,
+ CEPH_OSD_OP_UNBALANCEREADS = CEPH_OSD_OP_MODE_SUB | 4,
+ CEPH_OSD_OP_SCRUB = CEPH_OSD_OP_MODE_SUB | 5,
+ CEPH_OSD_OP_SCRUB_RESERVE = CEPH_OSD_OP_MODE_SUB | 6,
+ CEPH_OSD_OP_SCRUB_UNRESERVE = CEPH_OSD_OP_MODE_SUB | 7,
+ CEPH_OSD_OP_SCRUB_STOP = CEPH_OSD_OP_MODE_SUB | 8,
/** lock **/
CEPH_OSD_OP_WRLOCK = CEPH_OSD_OP_MODE_WR | CEPH_OSD_OP_TYPE_LOCK | 1,
@@ -328,6 +341,8 @@ enum {
CEPH_OSD_CMPXATTR_MODE_U64 = 2
};
+#define RADOS_NOTIFY_VER 1
+
/*
* an individual object operation. each may be accompanied by some data
* payload
@@ -359,7 +374,12 @@ struct ceph_osd_op {
struct {
__le64 snapid;
} __attribute__ ((packed)) snap;
- };
+ struct {
+ __le64 cookie;
+ __le64 ver;
+ __u8 flag; /* 0 = unwatch, 1 = watch */
+ } __attribute__ ((packed)) watch;
+};
__le32 payload_len;
} __attribute__ ((packed));
@@ -402,4 +422,5 @@ struct ceph_osd_reply_head {
} __attribute__ ((packed));
+
#endif
diff --git a/net/ceph/armor.c b/net/ceph/armor.c
index eb2a666..1fc1ee1 100644
--- a/net/ceph/armor.c
+++ b/net/ceph/armor.c
@@ -78,8 +78,10 @@ int ceph_unarmor(char *dst, const char *src, const char *end)
while (src < end) {
int a, b, c, d;
- if (src < end && src[0] == '\n')
+ if (src[0] == '\n') {
src++;
+ continue;
+ }
if (src + 4 > end)
return -EINVAL;
a = decode_bits(src[0]);
diff --git a/net/ceph/ceph_common.c b/net/ceph/ceph_common.c
index f3e4a13..95f96ab 100644
--- a/net/ceph/ceph_common.c
+++ b/net/ceph/ceph_common.c
@@ -62,6 +62,7 @@ const char *ceph_msg_type_name(int type)
case CEPH_MSG_OSD_MAP: return "osd_map";
case CEPH_MSG_OSD_OP: return "osd_op";
case CEPH_MSG_OSD_OPREPLY: return "osd_opreply";
+ case CEPH_MSG_WATCH_NOTIFY: return "watch_notify";
default: return "unknown";
}
}
diff --git a/net/ceph/osd_client.c b/net/ceph/osd_client.c
index 3e20a12..02212ed 100644
--- a/net/ceph/osd_client.c
+++ b/net/ceph/osd_client.c
@@ -22,10 +22,15 @@
#define OSD_OPREPLY_FRONT_LEN 512
static const struct ceph_connection_operations osd_con_ops;
-static int __kick_requests(struct ceph_osd_client *osdc,
- struct ceph_osd *kickosd);
-static void kick_requests(struct ceph_osd_client *osdc, struct ceph_osd *osd);
+static void send_queued(struct ceph_osd_client *osdc);
+static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd);
+static void __register_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
+static void __unregister_linger_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
+static int __send_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req);
static int op_needs_trail(int op)
{
@@ -34,6 +39,7 @@ static int op_needs_trail(int op)
case CEPH_OSD_OP_SETXATTR:
case CEPH_OSD_OP_CMPXATTR:
case CEPH_OSD_OP_CALL:
+ case CEPH_OSD_OP_NOTIFY:
return 1;
default:
return 0;
@@ -209,6 +215,8 @@ struct ceph_osd_request *ceph_osdc_alloc_request(struct ceph_osd_client *osdc,
init_completion(&req->r_completion);
init_completion(&req->r_safe_completion);
INIT_LIST_HEAD(&req->r_unsafe_item);
+ INIT_LIST_HEAD(&req->r_linger_item);
+ INIT_LIST_HEAD(&req->r_linger_osd);
req->r_flags = flags;
WARN_ON((flags & (CEPH_OSD_FLAG_READ|CEPH_OSD_FLAG_WRITE)) == 0);
@@ -315,6 +323,24 @@ static void osd_req_encode_op(struct ceph_osd_request *req,
break;
case CEPH_OSD_OP_STARTSYNC:
break;
+ case CEPH_OSD_OP_NOTIFY:
+ {
+ __le32 prot_ver = cpu_to_le32(src->watch.prot_ver);
+ __le32 timeout = cpu_to_le32(src->watch.timeout);
+
+ BUG_ON(!req->r_trail);
+
+ ceph_pagelist_append(req->r_trail,
+ &prot_ver, sizeof(prot_ver));
+ ceph_pagelist_append(req->r_trail,
+ &timeout, sizeof(timeout));
+ }
+ case CEPH_OSD_OP_NOTIFY_ACK:
+ case CEPH_OSD_OP_WATCH:
+ dst->watch.cookie = cpu_to_le64(src->watch.cookie);
+ dst->watch.ver = cpu_to_le64(src->watch.ver);
+ dst->watch.flag = src->watch.flag;
+ break;
default:
pr_err("unrecognized osd opcode %d\n", dst->op);
WARN_ON(1);
@@ -529,6 +555,45 @@ __lookup_request_ge(struct ceph_osd_client *osdc,
return NULL;
}
+/*
+ * Resubmit requests pending on the given osd.
+ */
+static void __kick_osd_requests(struct ceph_osd_client *osdc,
+ struct ceph_osd *osd)
+{
+ struct ceph_osd_request *req, *nreq;
+ int err;
+
+ dout("__kick_osd_requests osd%d\n", osd->o_osd);
+ err = __reset_osd(osdc, osd);
+ if (err == -EAGAIN)
+ return;
+
+ list_for_each_entry(req, &osd->o_requests, r_osd_item) {
+ list_move(&req->r_req_lru_item, &osdc->req_unsent);
+ dout("requeued %p tid %llu osd%d\n", req, req->r_tid,
+ osd->o_osd);
+ if (!req->r_linger)
+ req->r_flags |= CEPH_OSD_FLAG_RETRY;
+ }
+
+ list_for_each_entry_safe(req, nreq, &osd->o_linger_requests,
+ r_linger_osd) {
+ __unregister_linger_request(osdc, req);
+ __register_request(osdc, req);
+ list_move(&req->r_req_lru_item, &osdc->req_unsent);
+ dout("requeued lingering %p tid %llu osd%d\n", req, req->r_tid,
+ osd->o_osd);
+ }
+}
+
+static void kick_osd_requests(struct ceph_osd_client *osdc,
+ struct ceph_osd *kickosd)
+{
+ mutex_lock(&osdc->request_mutex);
+ __kick_osd_requests(osdc, kickosd);
+ mutex_unlock(&osdc->request_mutex);
+}
/*
* If the osd connection drops, we need to resubmit all requests.
@@ -543,7 +608,8 @@ static void osd_reset(struct ceph_connection *con)
dout("osd_reset osd%d\n", osd->o_osd);
osdc = osd->o_osdc;
down_read(&osdc->map_sem);
- kick_requests(osdc, osd);
+ kick_osd_requests(osdc, osd);
+ send_queued(osdc);
up_read(&osdc->map_sem);
}
@@ -561,6 +627,7 @@ static struct ceph_osd *create_osd(struct ceph_osd_client *osdc)
atomic_set(&osd->o_ref, 1);
osd->o_osdc = osdc;
INIT_LIST_HEAD(&osd->o_requests);
+ INIT_LIST_HEAD(&osd->o_linger_requests);
INIT_LIST_HEAD(&osd->o_osd_lru);
osd->o_incarnation = 1;
@@ -650,7 +717,8 @@ static int __reset_osd(struct ceph_osd_client *osdc, struct ceph_osd *osd)
int ret = 0;
dout("__reset_osd %p osd%d\n", osd, osd->o_osd);
- if (list_empty(&osd->o_requests)) {
+ if (list_empty(&osd->o_requests) &&
+ list_empty(&osd->o_linger_requests)) {
__remove_osd(osdc, osd);
} else if (memcmp(&osdc->osdmap->osd_addr[osd->o_osd],
&osd->o_con.peer_addr,
@@ -723,10 +791,9 @@ static void __cancel_osd_timeout(struct ceph_osd_client *osdc)
* Register request, assign tid. If this is the first request, set up
* the timeout event.
*/
-static void register_request(struct ceph_osd_client *osdc,
- struct ceph_osd_request *req)
+static void __register_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
{
- mutex_lock(&osdc->request_mutex);
req->r_tid = ++osdc->last_tid;
req->r_request->hdr.tid = cpu_to_le64(req->r_tid);
INIT_LIST_HEAD(&req->r_req_lru_item);
@@ -740,6 +807,13 @@ static void register_request(struct ceph_osd_client *osdc,
dout(" first request, scheduling timeout\n");
__schedule_osd_timeout(osdc);
}
+}
+
+static void register_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
+{
+ mutex_lock(&osdc->request_mutex);
+ __register_request(osdc, req);
mutex_unlock(&osdc->request_mutex);
}
@@ -758,9 +832,14 @@ static void __unregister_request(struct ceph_osd_client *osdc,
ceph_con_revoke(&req->r_osd->o_con, req->r_request);
list_del_init(&req->r_osd_item);
- if (list_empty(&req->r_osd->o_requests))
+ if (list_empty(&req->r_osd->o_requests) &&
+ list_empty(&req->r_osd->o_linger_requests)) {
+ dout("moving osd to %p lru\n", req->r_osd);
__move_osd_to_lru(osdc, req->r_osd);
- req->r_osd = NULL;
+ }
+ if (list_empty(&req->r_osd_item) &&
+ list_empty(&req->r_linger_item))
+ req->r_osd = NULL;
}
ceph_osdc_put_request(req);
@@ -781,20 +860,72 @@ static void __cancel_request(struct ceph_osd_request *req)
ceph_con_revoke(&req->r_osd->o_con, req->r_request);
req->r_sent = 0;
}
- list_del_init(&req->r_req_lru_item);
}
+static void __register_linger_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
+{
+ dout("__register_linger_request %p\n", req);
+ list_add_tail(&req->r_linger_item, &osdc->req_linger);
+ list_add_tail(&req->r_linger_osd, &req->r_osd->o_linger_requests);
+}
+
+static void __unregister_linger_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
+{
+ dout("__unregister_linger_request %p\n", req);
+ if (req->r_osd) {
+ list_del_init(&req->r_linger_item);
+ list_del_init(&req->r_linger_osd);
+
+ if (list_empty(&req->r_osd->o_requests) &&
+ list_empty(&req->r_osd->o_linger_requests)) {
+ dout("moving osd to %p lru\n", req->r_osd);
+ __move_osd_to_lru(osdc, req->r_osd);
+ }
+ req->r_osd = NULL;
+ }
+}
+
+void ceph_osdc_unregister_linger_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
+{
+ mutex_lock(&osdc->request_mutex);
+ if (req->r_linger) {
+ __unregister_linger_request(osdc, req);
+ ceph_osdc_put_request(req);
+ }
+ mutex_unlock(&osdc->request_mutex);
+}
+EXPORT_SYMBOL(ceph_osdc_unregister_linger_request);
+
+void ceph_osdc_set_request_linger(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
+{
+ if (!req->r_linger) {
+ dout("set_request_linger %p\n", req);
+ req->r_linger = 1;
+ /*
+ * caller is now responsible for calling
+ * unregister_linger_request
+ */
+ ceph_osdc_get_request(req);
+ }
+}
+EXPORT_SYMBOL(ceph_osdc_set_request_linger);
+
/*
* Pick an osd (the first 'up' osd in the pg), allocate the osd struct
* (as needed), and set the request r_osd appropriately. If there is
- * no up osd, set r_osd to NULL.
+ * no up osd, set r_osd to NULL. Move the request to the appropiate list
+ * (unsent, homeless) or leave on in-flight lru.
*
* Return 0 if unchanged, 1 if changed, or negative on error.
*
* Caller should hold map_sem for read and request_mutex.
*/
-static int __map_osds(struct ceph_osd_client *osdc,
- struct ceph_osd_request *req)
+static int __map_request(struct ceph_osd_client *osdc,
+ struct ceph_osd_request *req)
{
struct ceph_osd_request_head *reqhead = req->r_request->front.iov_base;
struct ceph_pg pgid;
@@ -802,11 +933,13 @@ static int __map_osds(struct ceph_osd_client *osdc,
int o = -1, num = 0;
int err;
- dout("map_osds %p tid %lld\n", req, req->r_tid);
+ dout("map_request %p tid %lld\n", req, req->r_tid);
err = ceph_calc_object_layout(&reqhead->layout, req->r_oid,
&req->r_file_layout, osdc->osdmap);
- if (err)
+ if (err) {
+ list_move(&req->r_req_lru_item, &osdc->req_notarget);
return err;
+ }
pgid = reqhead->layout.ol_pgid;
req->r_pgid = pgid;
@@ -823,7 +956,7 @@ static int __map_osds(struct ceph_osd_client *osdc,
(req->r_osd == NULL && o == -1))
return 0; /* no change */
- dout("map_osds tid %llu pgid %d.%x osd%d (was osd%d)\n",
+ dout("map_request tid %llu pgid %d.%x osd%d (was osd%d)\n",
req->r_tid, le32_to_cpu(pgid.pool), le16_to_cpu(pgid.ps), o,
req->r_osd ? req->r_osd->o_osd : -1);
@@ -841,10 +974,12 @@ static int __map_osds(struct ceph_osd_client *osdc,
if (!req->r_osd && o >= 0) {
err = -ENOMEM;
req->r_osd = create_osd(osdc);
- if (!req->r_osd)
+ if (!req->r_osd) {
+ list_move(&req->r_req_lru_item, &osdc->req_notarget);
goto out;
+ }
- dout("map_osds osd %p is osd%d\n", req->r_osd, o);
+ dout("map_request osd %p is osd%d\n", req->r_osd, o);
req->r_osd->o_osd = o;
req->r_osd->o_con.peer_name.num = cpu_to_le64(o);
__insert_osd(osdc, req->r_osd);
@@ -855,6 +990,9 @@ static int __map_osds(struct ceph_osd_client *osdc,
if (req->r_osd) {
__remove_osd_from_lru(req->r_osd);
list_add(&req->r_osd_item, &req->r_osd->o_requests);
+ list_move(&req->r_req_lru_item, &osdc->req_unsent);
+ } else {
+ list_move(&req->r_req_lru_item, &osdc->req_notarget);
}
err = 1; /* osd or pg changed */
@@ -869,16 +1007,6 @@ static int __send_request(struct ceph_osd_client *osdc,
struct ceph_osd_request *req)
{
struct ceph_osd_request_head *reqhead;
- int err;
-
- err = __map_osds(osdc, req);
- if (err < 0)
- return err;
- if (req->r_osd == NULL) {
- dout("send_request %p no up osds in pg\n", req);
- ceph_monc_request_next_osdmap(&osdc->client->monc);
- return 0;
- }
dout("send_request %p tid %llu to osd%d flags %d\n",
req, req->r_tid, req->r_osd->o_osd, req->r_flags);
@@ -898,6 +1026,21 @@ static int __send_request(struct ceph_osd_client *osdc,
}
/*
+ * Send any requests in the queue (req_unsent).
+ */
+static void send_queued(struct ceph_osd_client *osdc)
+{
+ struct ceph_osd_request *req, *tmp;
+
+ dout("send_queued\n");
+ mutex_lock(&osdc->request_mutex);
+ list_for_each_entry_safe(req, tmp, &osdc->req_unsent, r_req_lru_item) {
+ __send_request(osdc, req);
+ }
+ mutex_unlock(&osdc->request_mutex);
+}
+
+/*
* Timeout callback, called every N seconds when 1 or more osd
* requests has been active for more than N seconds. When this
* happens, we ping all OSDs with requests who have timed out to
@@ -916,30 +1059,13 @@ static void handle_timeout(struct work_struct *work)
unsigned long keepalive =
osdc->client->options->osd_keepalive_timeout * HZ;
unsigned long last_stamp = 0;
- struct rb_node *p;
struct list_head slow_osds;
-
dout("timeout\n");
down_read(&osdc->map_sem);
ceph_monc_request_next_osdmap(&osdc->client->monc);
mutex_lock(&osdc->request_mutex);
- for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
- req = rb_entry(p, struct ceph_osd_request, r_node);
-
- if (req->r_resend) {
- int err;
-
- dout("osdc resending prev failed %lld\n", req->r_tid);
- err = __send_request(osdc, req);
- if (err)
- dout("osdc failed again on %lld\n", req->r_tid);
- else
- req->r_resend = false;
- continue;
- }
- }
/*
* reset osds that appear to be _really_ unresponsive. this
@@ -963,7 +1089,7 @@ static void handle_timeout(struct work_struct *work)
BUG_ON(!osd);
pr_warning(" tid %llu timed out on osd%d, will reset osd\n",
req->r_tid, osd->o_osd);
- __kick_requests(osdc, osd);
+ __kick_osd_requests(osdc, osd);
}
/*
@@ -991,7 +1117,7 @@ static void handle_timeout(struct work_struct *work)
__schedule_osd_timeout(osdc);
mutex_unlock(&osdc->request_mutex);
-
+ send_queued(osdc);
up_read(&osdc->map_sem);
}
@@ -1035,7 +1161,6 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
numops * sizeof(struct ceph_osd_op))
goto bad;
dout("handle_reply %p tid %llu result %d\n", msg, tid, (int)result);
-
/* lookup */
mutex_lock(&osdc->request_mutex);
req = __lookup_request(osdc, tid);
@@ -1079,6 +1204,9 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
dout("handle_reply tid %llu flags %d\n", tid, flags);
+ if (req->r_linger && (flags & CEPH_OSD_FLAG_ONDISK))
+ __register_linger_request(osdc, req);
+
/* either this is a read, or we got the safe response */
if (result < 0 ||
(flags & CEPH_OSD_FLAG_ONDISK) ||
@@ -1099,6 +1227,7 @@ static void handle_reply(struct ceph_osd_client *osdc, struct ceph_msg *msg,
}
done:
+ dout("req=%p req->r_linger=%d\n", req, req->r_linger);
ceph_osdc_put_request(req);
return;
@@ -1109,108 +1238,83 @@ bad:
ceph_msg_dump(msg);
}
-
-static int __kick_requests(struct ceph_osd_client *osdc,
- struct ceph_osd *kickosd)
+static void reset_changed_osds(struct ceph_osd_client *osdc)
{
- struct ceph_osd_request *req;
struct rb_node *p, *n;
- int needmap = 0;
- int err;
- dout("kick_requests osd%d\n", kickosd ? kickosd->o_osd : -1);
- if (kickosd) {
- err = __reset_osd(osdc, kickosd);
- if (err == -EAGAIN)
- return 1;
- } else {
- for (p = rb_first(&osdc->osds); p; p = n) {
- struct ceph_osd *osd =
- rb_entry(p, struct ceph_osd, o_node);
-
- n = rb_next(p);
- if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
- memcmp(&osd->o_con.peer_addr,
- ceph_osd_addr(osdc->osdmap,
- osd->o_osd),
- sizeof(struct ceph_entity_addr)) != 0)
- __reset_osd(osdc, osd);
- }
+ for (p = rb_first(&osdc->osds); p; p = n) {
+ struct ceph_osd *osd = rb_entry(p, struct ceph_osd, o_node);
+
+ n = rb_next(p);
+ if (!ceph_osd_is_up(osdc->osdmap, osd->o_osd) ||
+ memcmp(&osd->o_con.peer_addr,
+ ceph_osd_addr(osdc->osdmap,
+ osd->o_osd),
+ sizeof(struct ceph_entity_addr)) != 0)
+ __reset_osd(osdc, osd);
}
+}
+
+/*
+ * Requeue requests whose mapping to an OSD has changed. If requests map to
+ * no osd, request a new map.
+ *
+ * Caller should hold map_sem for read and request_mutex.
+ */
+static void kick_requests(struct ceph_osd_client *osdc)
+{
+ struct ceph_osd_request *req, *nreq;
+ struct rb_node *p;
+ int needmap = 0;
+ int err;
+ dout("kick_requests\n");
+ mutex_lock(&osdc->request_mutex);
for (p = rb_first(&osdc->requests); p; p = rb_next(p)) {
req = rb_entry(p, struct ceph_osd_request, r_node);
-
- if (req->r_resend) {
- dout(" r_resend set on tid %llu\n", req->r_tid);
- __cancel_request(req);
- goto kick;
- }
- if (req->r_osd && kickosd == req->r_osd) {
- __cancel_request(req);
- goto kick;
+ err = __map_request(osdc, req);
+ if (err < 0)
+ continue; /* error */
+ if (req->r_osd == NULL) {
+ dout("%p tid %llu maps to no osd\n", req, req->r_tid);
+ needmap++; /* request a newer map */
+ } else if (err > 0) {
+ dout("%p tid %llu requeued on osd%d\n", req, req->r_tid,
+ req->r_osd ? req->r_osd->o_osd : -1);
+ if (!req->r_linger)
+ req->r_flags |= CEPH_OSD_FLAG_RETRY;
}
+ }
+
+ list_for_each_entry_safe(req, nreq, &osdc->req_linger,
+ r_linger_item) {
+ dout("linger req=%p req->r_osd=%p\n", req, req->r_osd);
- err = __map_osds(osdc, req);
+ err = __map_request(osdc, req);
if (err == 0)
- continue; /* no change */
- if (err < 0) {
- /*
- * FIXME: really, we should set the request
- * error and fail if this isn't a 'nofail'
- * request, but that's a fair bit more
- * complicated to do. So retry!
- */
- dout(" setting r_resend on %llu\n", req->r_tid);
- req->r_resend = true;
- continue;
- }
+ continue; /* no change and no osd was specified */
+ if (err < 0)
+ continue; /* hrm! */
if (req->r_osd == NULL) {
dout("tid %llu maps to no valid osd\n", req->r_tid);
needmap++; /* request a newer map */
continue;
}
-kick:
- dout("kicking %p tid %llu osd%d\n", req, req->r_tid,
+ dout("kicking lingering %p tid %llu osd%d\n", req, req->r_tid,
req->r_osd ? req->r_osd->o_osd : -1);
- req->r_flags |= CEPH_OSD_FLAG_RETRY;
- err = __send_request(osdc, req);
- if (err) {
- dout(" setting r_resend on %llu\n", req->r_tid);
- req->r_resend = true;
- }
+ __unregister_linger_request(osdc, req);
+ __register_request(osdc, req);
}
-
- return needmap;
-}
-
-/*
- * Resubmit osd requests whose osd or osd address has changed. Request
- * a new osd map if osds are down, or we are otherwise unable to determine
- * how to direct a request.
- *
- * Close connections to down osds.
- *
- * If @who is specified, resubmit requests for that specific osd.
- *
- * Caller should hold map_sem for read and request_mutex.
- */
-static void kick_requests(struct ceph_osd_client *osdc,
- struct ceph_osd *kickosd)
-{
- int needmap;
-
- mutex_lock(&osdc->request_mutex);
- needmap = __kick_requests(osdc, kickosd);
mutex_unlock(&osdc->request_mutex);
if (needmap) {
dout("%d requests for down osds, need new map\n", needmap);
ceph_monc_request_next_osdmap(&osdc->client->monc);
}
-
}
+
+
/*
* Process updated osd map.
*
@@ -1263,6 +1367,8 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
ceph_osdmap_destroy(osdc->osdmap);
osdc->osdmap = newmap;
}
+ kick_requests(osdc);
+ reset_changed_osds(osdc);
} else {
dout("ignoring incremental map %u len %d\n",
epoch, maplen);
@@ -1300,6 +1406,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
osdc->osdmap = newmap;
if (oldmap)
ceph_osdmap_destroy(oldmap);
+ kick_requests(osdc);
}
p += maplen;
nr_maps--;
@@ -1308,8 +1415,7 @@ void ceph_osdc_handle_map(struct ceph_osd_client *osdc, struct ceph_msg *msg)
done:
downgrade_write(&osdc->map_sem);
ceph_monc_got_osdmap(&osdc->client->monc, osdc->osdmap->epoch);
- if (newmap)
- kick_requests(osdc, NULL);
+ send_queued(osdc);
up_read(&osdc->map_sem);
wake_up_all(&osdc->client->auth_wq);
return;
@@ -1322,6 +1428,223 @@ bad:
}
/*
+ * watch/notify callback event infrastructure
+ *
+ * These callbacks are used both for watch and notify operations.
+ */
+static void __release_event(struct kref *kref)
+{
+ struct ceph_osd_event *event =
+ container_of(kref, struct ceph_osd_event, kref);
+
+ dout("__release_event %p\n", event);
+ kfree(event);
+}
+
+static void get_event(struct ceph_osd_event *event)
+{
+ kref_get(&event->kref);
+}
+
+void ceph_osdc_put_event(struct ceph_osd_event *event)
+{
+ kref_put(&event->kref, __release_event);
+}
+EXPORT_SYMBOL(ceph_osdc_put_event);
+
+static void __insert_event(struct ceph_osd_client *osdc,
+ struct ceph_osd_event *new)
+{
+ struct rb_node **p = &osdc->event_tree.rb_node;
+ struct rb_node *parent = NULL;
+ struct ceph_osd_event *event = NULL;
+
+ while (*p) {
+ parent = *p;
+ event = rb_entry(parent, struct ceph_osd_event, node);
+ if (new->cookie < event->cookie)
+ p = &(*p)->rb_left;
+ else if (new->cookie > event->cookie)
+ p = &(*p)->rb_right;
+ else
+ BUG();
+ }
+
+ rb_link_node(&new->node, parent, p);
+ rb_insert_color(&new->node, &osdc->event_tree);
+}
+
+static struct ceph_osd_event *__find_event(struct ceph_osd_client *osdc,
+ u64 cookie)
+{
+ struct rb_node **p = &osdc->event_tree.rb_node;
+ struct rb_node *parent = NULL;
+ struct ceph_osd_event *event = NULL;
+
+ while (*p) {
+ parent = *p;
+ event = rb_entry(parent, struct ceph_osd_event, node);
+ if (cookie < event->cookie)
+ p = &(*p)->rb_left;
+ else if (cookie > event->cookie)
+ p = &(*p)->rb_right;
+ else
+ return event;
+ }
+ return NULL;
+}
+
+static void __remove_event(struct ceph_osd_event *event)
+{
+ struct ceph_osd_client *osdc = event->osdc;
+
+ if (!RB_EMPTY_NODE(&event->node)) {
+ dout("__remove_event removed %p\n", event);
+ rb_erase(&event->node, &osdc->event_tree);
+ ceph_osdc_put_event(event);
+ } else {
+ dout("__remove_event didn't remove %p\n", event);
+ }
+}
+
+int ceph_osdc_create_event(struct ceph_osd_client *osdc,
+ void (*event_cb)(u64, u64, u8, void *),
+ int one_shot, void *data,
+ struct ceph_osd_event **pevent)
+{
+ struct ceph_osd_event *event;
+
+ event = kmalloc(sizeof(*event), GFP_NOIO);
+ if (!event)
+ return -ENOMEM;
+
+ dout("create_event %p\n", event);
+ event->cb = event_cb;
+ event->one_shot = one_shot;
+ event->data = data;
+ event->osdc = osdc;
+ INIT_LIST_HEAD(&event->osd_node);
+ kref_init(&event->kref); /* one ref for us */
+ kref_get(&event->kref); /* one ref for the caller */
+ init_completion(&event->completion);
+
+ spin_lock(&osdc->event_lock);
+ event->cookie = ++osdc->event_count;
+ __insert_event(osdc, event);
+ spin_unlock(&osdc->event_lock);
+
+ *pevent = event;
+ return 0;
+}
+EXPORT_SYMBOL(ceph_osdc_create_event);
+
+void ceph_osdc_cancel_event(struct ceph_osd_event *event)
+{
+ struct ceph_osd_client *osdc = event->osdc;
+
+ dout("cancel_event %p\n", event);
+ spin_lock(&osdc->event_lock);
+ __remove_event(event);
+ spin_unlock(&osdc->event_lock);
+ ceph_osdc_put_event(event); /* caller's */
+}
+EXPORT_SYMBOL(ceph_osdc_cancel_event);
+
+
+static void do_event_work(struct work_struct *work)
+{
+ struct ceph_osd_event_work *event_work =
+ container_of(work, struct ceph_osd_event_work, work);
+ struct ceph_osd_event *event = event_work->event;
+ u64 ver = event_work->ver;
+ u64 notify_id = event_work->notify_id;
+ u8 opcode = event_work->opcode;
+
+ dout("do_event_work completing %p\n", event);
+ event->cb(ver, notify_id, opcode, event->data);
+ complete(&event->completion);
+ dout("do_event_work completed %p\n", event);
+ ceph_osdc_put_event(event);
+ kfree(event_work);
+}
+
+
+/*
+ * Process osd watch notifications
+ */
+void handle_watch_notify(struct ceph_osd_client *osdc, struct ceph_msg *msg)
+{
+ void *p, *end;
+ u8 proto_ver;
+ u64 cookie, ver, notify_id;
+ u8 opcode;
+ struct ceph_osd_event *event;
+ struct ceph_osd_event_work *event_work;
+
+ p = msg->front.iov_base;
+ end = p + msg->front.iov_len;
+
+ ceph_decode_8_safe(&p, end, proto_ver, bad);
+ ceph_decode_8_safe(&p, end, opcode, bad);
+ ceph_decode_64_safe(&p, end, cookie, bad);
+ ceph_decode_64_safe(&p, end, ver, bad);
+ ceph_decode_64_safe(&p, end, notify_id, bad);
+
+ spin_lock(&osdc->event_lock);
+ event = __find_event(osdc, cookie);
+ if (event) {
+ get_event(event);
+ if (event->one_shot)
+ __remove_event(event);
+ }
+ spin_unlock(&osdc->event_lock);
+ dout("handle_watch_notify cookie %lld ver %lld event %p\n",
+ cookie, ver, event);
+ if (event) {
+ event_work = kmalloc(sizeof(*event_work), GFP_NOIO);
+ INIT_WORK(&event_work->work, do_event_work);
+ if (!event_work) {
+ dout("ERROR: could not allocate event_work\n");
+ goto done_err;
+ }
+ event_work->event = event;
+ event_work->ver = ver;
+ event_work->notify_id = notify_id;
+ event_work->opcode = opcode;
+ if (!queue_work(osdc->notify_wq, &event_work->work)) {
+ dout("WARNING: failed to queue notify event work\n");
+ goto done_err;
+ }
+ }
+
+ return;
+
+done_err:
+ complete(&event->completion);
+ ceph_osdc_put_event(event);
+ return;
+
+bad:
+ pr_err("osdc handle_watch_notify corrupt msg\n");
+ return;
+}
+
+int ceph_osdc_wait_event(struct ceph_osd_event *event, unsigned long timeout)
+{
+ int err;
+
+ dout("wait_event %p\n", event);
+ err = wait_for_completion_interruptible_timeout(&event->completion,
+ timeout * HZ);
+ ceph_osdc_put_event(event);
+ if (err > 0)
+ err = 0;
+ dout("wait_event %p returns %d\n", event, err);
+ return err;
+}
+EXPORT_SYMBOL(ceph_osdc_wait_event);
+
+/*
* Register request, send initial attempt.
*/
int ceph_osdc_start_request(struct ceph_osd_client *osdc,
@@ -1347,15 +1670,22 @@ int ceph_osdc_start_request(struct ceph_osd_client *osdc,
* the request still han't been touched yet.
*/
if (req->r_sent == 0) {
- rc = __send_request(osdc, req);
- if (rc) {
- if (nofail) {
- dout("osdc_start_request failed send, "
- " marking %lld\n", req->r_tid);
- req->r_resend = true;
- rc = 0;
- } else {
- __unregister_request(osdc, req);
+ rc = __map_request(osdc, req);
+ if (rc < 0)
+ return rc;
+ if (req->r_osd == NULL) {
+ dout("send_request %p no up osds in pg\n", req);
+ ceph_monc_request_next_osdmap(&osdc->client->monc);
+ } else {
+ rc = __send_request(osdc, req);
+ if (rc) {
+ if (nofail) {
+ dout("osdc_start_request failed send, "
+ " will retry %lld\n", req->r_tid);
+ rc = 0;
+ } else {
+ __unregister_request(osdc, req);
+ }
}
}
}
@@ -1441,9 +1771,15 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
INIT_LIST_HEAD(&osdc->osd_lru);
osdc->requests = RB_ROOT;
INIT_LIST_HEAD(&osdc->req_lru);
+ INIT_LIST_HEAD(&osdc->req_unsent);
+ INIT_LIST_HEAD(&osdc->req_notarget);
+ INIT_LIST_HEAD(&osdc->req_linger);
osdc->num_requests = 0;
INIT_DELAYED_WORK(&osdc->timeout_work, handle_timeout);
INIT_DELAYED_WORK(&osdc->osds_timeout_work, handle_osds_timeout);
+ spin_lock_init(&osdc->event_lock);
+ osdc->event_tree = RB_ROOT;
+ osdc->event_count = 0;
schedule_delayed_work(&osdc->osds_timeout_work,
round_jiffies_relative(osdc->client->options->osd_idle_ttl * HZ));
@@ -1463,6 +1799,13 @@ int ceph_osdc_init(struct ceph_osd_client *osdc, struct ceph_client *client)
"osd_op_reply");
if (err < 0)
goto out_msgpool;
+
+ osdc->notify_wq = create_singlethread_workqueue("ceph-watch-notify");
+ if (IS_ERR(osdc->notify_wq)) {
+ err = PTR_ERR(osdc->notify_wq);
+ osdc->notify_wq = NULL;
+ goto out_msgpool;
+ }
return 0;
out_msgpool:
@@ -1476,6 +1819,8 @@ EXPORT_SYMBOL(ceph_osdc_init);
void ceph_osdc_stop(struct ceph_osd_client *osdc)
{
+ flush_workqueue(osdc->notify_wq);
+ destroy_workqueue(osdc->notify_wq);
cancel_delayed_work_sync(&osdc->timeout_work);
cancel_delayed_work_sync(&osdc->osds_timeout_work);
if (osdc->osdmap) {
@@ -1483,6 +1828,7 @@ void ceph_osdc_stop(struct ceph_osd_client *osdc)
osdc->osdmap = NULL;
}
remove_old_osds(osdc, 1);
+ WARN_ON(!RB_EMPTY_ROOT(&osdc->osds));
mempool_destroy(osdc->req_mempool);
ceph_msgpool_destroy(&osdc->msgpool_op);
ceph_msgpool_destroy(&osdc->msgpool_op_reply);
@@ -1591,6 +1937,9 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
case CEPH_MSG_OSD_OPREPLY:
handle_reply(osdc, msg, con);
break;
+ case CEPH_MSG_WATCH_NOTIFY:
+ handle_watch_notify(osdc, msg);
+ break;
default:
pr_err("received unknown message type %d %s\n", type,
@@ -1684,6 +2033,7 @@ static struct ceph_msg *alloc_msg(struct ceph_connection *con,
switch (type) {
case CEPH_MSG_OSD_MAP:
+ case CEPH_MSG_WATCH_NOTIFY:
return ceph_msg_new(type, front, GFP_NOFS);
case CEPH_MSG_OSD_OPREPLY:
return get_reply(con, hdr, skip);
generated by cgit v1.1 at 2024-12-26 12:02:32 +0000