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-rw-r--r--fs/ceph/Kconfig2
-rw-r--r--fs/ceph/addr.c23
-rw-r--r--fs/ceph/caps.c12
-rw-r--r--fs/ceph/debugfs.c16
-rw-r--r--fs/ceph/dir.c4
-rw-r--r--fs/ceph/file.c5
-rw-r--r--fs/ceph/mds_client.c184
-rw-r--r--fs/ceph/mds_client.h7
-rw-r--r--fs/ceph/mdsmap.c10
-rw-r--r--fs/ceph/metric.c149
-rw-r--r--fs/ceph/metric.h91
-rw-r--r--fs/ceph/super.c64
-rw-r--r--fs/ceph/super.h6
-rw-r--r--fs/ceph/xattr.c12
14 files changed, 482 insertions, 103 deletions
diff --git a/fs/ceph/Kconfig b/fs/ceph/Kconfig
index cf235f6eacf9..471e40156065 100644
--- a/fs/ceph/Kconfig
+++ b/fs/ceph/Kconfig
@@ -13,7 +13,7 @@ config CEPH_FS
scalable file system designed to provide high performance,
reliable access to petabytes of storage.
- More information at http://ceph.newdream.net/.
+ More information at https://ceph.io/.
If unsure, say N.
diff --git a/fs/ceph/addr.c b/fs/ceph/addr.c
index 01ad09733ac7..6ea761c84494 100644
--- a/fs/ceph/addr.c
+++ b/fs/ceph/addr.c
@@ -862,8 +862,7 @@ static void writepages_finish(struct ceph_osd_request *req)
osd_data = osd_req_op_extent_osd_data(req, 0);
if (osd_data->pages_from_pool)
- mempool_free(osd_data->pages,
- ceph_sb_to_client(inode->i_sb)->wb_pagevec_pool);
+ mempool_free(osd_data->pages, ceph_wb_pagevec_pool);
else
kfree(osd_data->pages);
ceph_osdc_put_request(req);
@@ -955,10 +954,10 @@ retry:
int num_ops = 0, op_idx;
unsigned i, pvec_pages, max_pages, locked_pages = 0;
struct page **pages = NULL, **data_pages;
- mempool_t *pool = NULL; /* Becomes non-null if mempool used */
struct page *page;
pgoff_t strip_unit_end = 0;
u64 offset = 0, len = 0;
+ bool from_pool = false;
max_pages = wsize >> PAGE_SHIFT;
@@ -1057,16 +1056,16 @@ get_more_pages:
sizeof(*pages),
GFP_NOFS);
if (!pages) {
- pool = fsc->wb_pagevec_pool;
- pages = mempool_alloc(pool, GFP_NOFS);
+ from_pool = true;
+ pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
BUG_ON(!pages);
}
len = 0;
} else if (page->index !=
(offset + len) >> PAGE_SHIFT) {
- if (num_ops >= (pool ? CEPH_OSD_SLAB_OPS :
- CEPH_OSD_MAX_OPS)) {
+ if (num_ops >= (from_pool ? CEPH_OSD_SLAB_OPS :
+ CEPH_OSD_MAX_OPS)) {
redirty_page_for_writepage(wbc, page);
unlock_page(page);
break;
@@ -1161,7 +1160,7 @@ new_request:
offset, len);
osd_req_op_extent_osd_data_pages(req, op_idx,
data_pages, len, 0,
- !!pool, false);
+ from_pool, false);
osd_req_op_extent_update(req, op_idx, len);
len = 0;
@@ -1188,12 +1187,12 @@ new_request:
dout("writepages got pages at %llu~%llu\n", offset, len);
osd_req_op_extent_osd_data_pages(req, op_idx, data_pages, len,
- 0, !!pool, false);
+ 0, from_pool, false);
osd_req_op_extent_update(req, op_idx, len);
BUG_ON(op_idx + 1 != req->r_num_ops);
- pool = NULL;
+ from_pool = false;
if (i < locked_pages) {
BUG_ON(num_ops <= req->r_num_ops);
num_ops -= req->r_num_ops;
@@ -1204,8 +1203,8 @@ new_request:
pages = kmalloc_array(locked_pages, sizeof(*pages),
GFP_NOFS);
if (!pages) {
- pool = fsc->wb_pagevec_pool;
- pages = mempool_alloc(pool, GFP_NOFS);
+ from_pool = true;
+ pages = mempool_alloc(ceph_wb_pagevec_pool, GFP_NOFS);
BUG_ON(!pages);
}
memcpy(pages, data_pages + i,
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 972c13aa4225..55ccccf77cea 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -668,6 +668,7 @@ void ceph_add_cap(struct inode *inode,
spin_lock(&session->s_cap_lock);
list_add_tail(&cap->session_caps, &session->s_caps);
session->s_nr_caps++;
+ atomic64_inc(&mdsc->metric.total_caps);
spin_unlock(&session->s_cap_lock);
} else {
spin_lock(&session->s_cap_lock);
@@ -1161,6 +1162,7 @@ void __ceph_remove_cap(struct ceph_cap *cap, bool queue_release)
} else {
list_del_init(&cap->session_caps);
session->s_nr_caps--;
+ atomic64_dec(&mdsc->metric.total_caps);
cap->session = NULL;
removed = 1;
}
@@ -4187,10 +4189,8 @@ void ceph_check_delayed_caps(struct ceph_mds_client *mdsc)
struct ceph_inode_info *ci;
dout("check_delayed_caps\n");
- while (1) {
- spin_lock(&mdsc->cap_delay_lock);
- if (list_empty(&mdsc->cap_delay_list))
- break;
+ spin_lock(&mdsc->cap_delay_lock);
+ while (!list_empty(&mdsc->cap_delay_list)) {
ci = list_first_entry(&mdsc->cap_delay_list,
struct ceph_inode_info,
i_cap_delay_list);
@@ -4200,13 +4200,13 @@ void ceph_check_delayed_caps(struct ceph_mds_client *mdsc)
list_del_init(&ci->i_cap_delay_list);
inode = igrab(&ci->vfs_inode);
- spin_unlock(&mdsc->cap_delay_lock);
-
if (inode) {
+ spin_unlock(&mdsc->cap_delay_lock);
dout("check_delayed_caps on %p\n", inode);
ceph_check_caps(ci, 0, NULL);
/* avoid calling iput_final() in tick thread */
ceph_async_iput(inode);
+ spin_lock(&mdsc->cap_delay_lock);
}
}
spin_unlock(&mdsc->cap_delay_lock);
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index 070ed8481340..97539b497e4c 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -145,7 +145,7 @@ static int metric_show(struct seq_file *s, void *p)
struct ceph_fs_client *fsc = s->private;
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_client_metric *m = &mdsc->metric;
- int i, nr_caps = 0;
+ int nr_caps = 0;
s64 total, sum, avg, min, max, sq;
seq_printf(s, "item total avg_lat(us) min_lat(us) max_lat(us) stdev(us)\n");
@@ -190,17 +190,7 @@ static int metric_show(struct seq_file *s, void *p)
percpu_counter_sum(&m->d_lease_mis),
percpu_counter_sum(&m->d_lease_hit));
- mutex_lock(&mdsc->mutex);
- for (i = 0; i < mdsc->max_sessions; i++) {
- struct ceph_mds_session *s;
-
- s = __ceph_lookup_mds_session(mdsc, i);
- if (!s)
- continue;
- nr_caps += s->s_nr_caps;
- ceph_put_mds_session(s);
- }
- mutex_unlock(&mdsc->mutex);
+ nr_caps = atomic64_read(&m->total_caps);
seq_printf(s, "%-14s%-16d%-16lld%lld\n", "caps", nr_caps,
percpu_counter_sum(&m->i_caps_mis),
percpu_counter_sum(&m->i_caps_hit));
@@ -272,7 +262,7 @@ static int mds_sessions_show(struct seq_file *s, void *ptr)
struct ceph_mds_client *mdsc = fsc->mdsc;
struct ceph_auth_client *ac = fsc->client->monc.auth;
struct ceph_options *opt = fsc->client->options;
- int mds = -1;
+ int mds;
mutex_lock(&mdsc->mutex);
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 39f5311404b0..060bdcc5ce32 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -930,6 +930,10 @@ static int ceph_symlink(struct inode *dir, struct dentry *dentry,
req->r_num_caps = 2;
req->r_dentry_drop = CEPH_CAP_FILE_SHARED | CEPH_CAP_AUTH_EXCL;
req->r_dentry_unless = CEPH_CAP_FILE_EXCL;
+ if (as_ctx.pagelist) {
+ req->r_pagelist = as_ctx.pagelist;
+ as_ctx.pagelist = NULL;
+ }
err = ceph_mdsc_do_request(mdsc, dir, req);
if (!err && !req->r_reply_info.head->is_dentry)
err = ceph_handle_notrace_create(dir, dentry);
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 160644ddaeed..d51c3f2fdca0 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1538,6 +1538,7 @@ static ssize_t ceph_read_iter(struct kiocb *iocb, struct iov_iter *to)
struct inode *inode = file_inode(filp);
struct ceph_inode_info *ci = ceph_inode(inode);
struct page *pinned_page = NULL;
+ bool direct_lock = iocb->ki_flags & IOCB_DIRECT;
ssize_t ret;
int want, got = 0;
int retry_op = 0, read = 0;
@@ -1546,7 +1547,7 @@ again:
dout("aio_read %p %llx.%llx %llu~%u trying to get caps on %p\n",
inode, ceph_vinop(inode), iocb->ki_pos, (unsigned)len, inode);
- if (iocb->ki_flags & IOCB_DIRECT)
+ if (direct_lock)
ceph_start_io_direct(inode);
else
ceph_start_io_read(inode);
@@ -1603,7 +1604,7 @@ again:
}
ceph_put_cap_refs(ci, got);
- if (iocb->ki_flags & IOCB_DIRECT)
+ if (direct_lock)
ceph_end_io_direct(inode);
else
ceph_end_io_read(inode);
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index a50497142e59..4a26862d7667 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -1103,8 +1103,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
frag.frag, mds);
if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
CEPH_MDS_STATE_ACTIVE) {
- if (mode == USE_ANY_MDS &&
- !ceph_mdsmap_is_laggy(mdsc->mdsmap,
+ if (!ceph_mdsmap_is_laggy(mdsc->mdsmap,
mds))
goto out;
}
@@ -1168,7 +1167,7 @@ static struct ceph_msg *create_session_msg(u32 op, u64 seq)
static const unsigned char feature_bits[] = CEPHFS_FEATURES_CLIENT_SUPPORTED;
#define FEATURE_BYTES(c) (DIV_ROUND_UP((size_t)feature_bits[c - 1] + 1, 64) * 8)
-static void encode_supported_features(void **p, void *end)
+static int encode_supported_features(void **p, void *end)
{
static const size_t count = ARRAY_SIZE(feature_bits);
@@ -1176,16 +1175,64 @@ static void encode_supported_features(void **p, void *end)
size_t i;
size_t size = FEATURE_BYTES(count);
- BUG_ON(*p + 4 + size > end);
+ if (WARN_ON_ONCE(*p + 4 + size > end))
+ return -ERANGE;
+
ceph_encode_32(p, size);
memset(*p, 0, size);
for (i = 0; i < count; i++)
((unsigned char*)(*p))[i / 8] |= BIT(feature_bits[i] % 8);
*p += size;
} else {
- BUG_ON(*p + 4 > end);
+ if (WARN_ON_ONCE(*p + 4 > end))
+ return -ERANGE;
+
ceph_encode_32(p, 0);
}
+
+ return 0;
+}
+
+static const unsigned char metric_bits[] = CEPHFS_METRIC_SPEC_CLIENT_SUPPORTED;
+#define METRIC_BYTES(cnt) (DIV_ROUND_UP((size_t)metric_bits[cnt - 1] + 1, 64) * 8)
+static int encode_metric_spec(void **p, void *end)
+{
+ static const size_t count = ARRAY_SIZE(metric_bits);
+
+ /* header */
+ if (WARN_ON_ONCE(*p + 2 > end))
+ return -ERANGE;
+
+ ceph_encode_8(p, 1); /* version */
+ ceph_encode_8(p, 1); /* compat */
+
+ if (count > 0) {
+ size_t i;
+ size_t size = METRIC_BYTES(count);
+
+ if (WARN_ON_ONCE(*p + 4 + 4 + size > end))
+ return -ERANGE;
+
+ /* metric spec info length */
+ ceph_encode_32(p, 4 + size);
+
+ /* metric spec */
+ ceph_encode_32(p, size);
+ memset(*p, 0, size);
+ for (i = 0; i < count; i++)
+ ((unsigned char *)(*p))[i / 8] |= BIT(metric_bits[i] % 8);
+ *p += size;
+ } else {
+ if (WARN_ON_ONCE(*p + 4 + 4 > end))
+ return -ERANGE;
+
+ /* metric spec info length */
+ ceph_encode_32(p, 4);
+ /* metric spec */
+ ceph_encode_32(p, 0);
+ }
+
+ return 0;
}
/*
@@ -1203,6 +1250,7 @@ static struct ceph_msg *create_session_open_msg(struct ceph_mds_client *mdsc, u6
struct ceph_mount_options *fsopt = mdsc->fsc->mount_options;
size_t size, count;
void *p, *end;
+ int ret;
const char* metadata[][2] = {
{"hostname", mdsc->nodename},
@@ -1227,12 +1275,19 @@ static struct ceph_msg *create_session_open_msg(struct ceph_mds_client *mdsc, u6
size = FEATURE_BYTES(count);
extra_bytes += 4 + size;
+ /* metric spec */
+ size = 0;
+ count = ARRAY_SIZE(metric_bits);
+ if (count > 0)
+ size = METRIC_BYTES(count);
+ extra_bytes += 2 + 4 + 4 + size;
+
/* Allocate the message */
msg = ceph_msg_new(CEPH_MSG_CLIENT_SESSION, sizeof(*h) + extra_bytes,
GFP_NOFS, false);
if (!msg) {
pr_err("create_session_msg ENOMEM creating msg\n");
- return NULL;
+ return ERR_PTR(-ENOMEM);
}
p = msg->front.iov_base;
end = p + msg->front.iov_len;
@@ -1245,9 +1300,9 @@ static struct ceph_msg *create_session_open_msg(struct ceph_mds_client *mdsc, u6
* Serialize client metadata into waiting buffer space, using
* the format that userspace expects for map<string, string>
*
- * ClientSession messages with metadata are v3
+ * ClientSession messages with metadata are v4
*/
- msg->hdr.version = cpu_to_le16(3);
+ msg->hdr.version = cpu_to_le16(4);
msg->hdr.compat_version = cpu_to_le16(1);
/* The write pointer, following the session_head structure */
@@ -1269,7 +1324,20 @@ static struct ceph_msg *create_session_open_msg(struct ceph_mds_client *mdsc, u6
p += val_len;
}
- encode_supported_features(&p, end);
+ ret = encode_supported_features(&p, end);
+ if (ret) {
+ pr_err("encode_supported_features failed!\n");
+ ceph_msg_put(msg);
+ return ERR_PTR(ret);
+ }
+
+ ret = encode_metric_spec(&p, end);
+ if (ret) {
+ pr_err("encode_metric_spec failed!\n");
+ ceph_msg_put(msg);
+ return ERR_PTR(ret);
+ }
+
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
@@ -1297,8 +1365,8 @@ static int __open_session(struct ceph_mds_client *mdsc,
/* send connect message */
msg = create_session_open_msg(mdsc, session->s_seq);
- if (!msg)
- return -ENOMEM;
+ if (IS_ERR(msg))
+ return PTR_ERR(msg);
ceph_con_send(&session->s_con, msg);
return 0;
}
@@ -1312,6 +1380,7 @@ static struct ceph_mds_session *
__open_export_target_session(struct ceph_mds_client *mdsc, int target)
{
struct ceph_mds_session *session;
+ int ret;
session = __ceph_lookup_mds_session(mdsc, target);
if (!session) {
@@ -1320,8 +1389,11 @@ __open_export_target_session(struct ceph_mds_client *mdsc, int target)
return session;
}
if (session->s_state == CEPH_MDS_SESSION_NEW ||
- session->s_state == CEPH_MDS_SESSION_CLOSING)
- __open_session(mdsc, session);
+ session->s_state == CEPH_MDS_SESSION_CLOSING) {
+ ret = __open_session(mdsc, session);
+ if (ret)
+ return ERR_PTR(ret);
+ }
return session;
}
@@ -1485,6 +1557,7 @@ int ceph_iterate_session_caps(struct ceph_mds_session *session,
cap->session = NULL;
list_del_init(&cap->session_caps);
session->s_nr_caps--;
+ atomic64_dec(&session->s_mdsc->metric.total_caps);
if (cap->queue_release)
__ceph_queue_cap_release(session, cap);
else
@@ -1785,8 +1858,7 @@ static void renewed_caps(struct ceph_mds_client *mdsc,
/*
* send a session close request
*/
-static int request_close_session(struct ceph_mds_client *mdsc,
- struct ceph_mds_session *session)
+static int request_close_session(struct ceph_mds_session *session)
{
struct ceph_msg *msg;
@@ -1809,7 +1881,7 @@ static int __close_session(struct ceph_mds_client *mdsc,
if (session->s_state >= CEPH_MDS_SESSION_CLOSING)
return 0;
session->s_state = CEPH_MDS_SESSION_CLOSING;
- return request_close_session(mdsc, session);
+ return request_close_session(session);
}
static bool drop_negative_children(struct dentry *dentry)
@@ -2520,7 +2592,12 @@ static struct ceph_msg *create_request_message(struct ceph_mds_client *mdsc,
ceph_encode_copy(&p, &ts, sizeof(ts));
}
- BUG_ON(p > end);
+ if (WARN_ON_ONCE(p > end)) {
+ ceph_msg_put(msg);
+ msg = ERR_PTR(-ERANGE);
+ goto out_free2;
+ }
+
msg->front.iov_len = p - msg->front.iov_base;
msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
@@ -2756,7 +2833,9 @@ static void __do_request(struct ceph_mds_client *mdsc,
}
if (session->s_state == CEPH_MDS_SESSION_NEW ||
session->s_state == CEPH_MDS_SESSION_CLOSING) {
- __open_session(mdsc, session);
+ err = __open_session(mdsc, session);
+ if (err)
+ goto out_session;
/* retry the same mds later */
if (random)
req->r_resend_mds = mds;
@@ -3279,8 +3358,10 @@ static void handle_session(struct ceph_mds_session *session,
goto bad;
/* version >= 3, feature bits */
ceph_decode_32_safe(&p, end, len, bad);
- ceph_decode_64_safe(&p, end, features, bad);
- p += len - sizeof(features);
+ if (len) {
+ ceph_decode_64_safe(&p, end, features, bad);
+ p += len - sizeof(features);
+ }
}
mutex_lock(&mdsc->mutex);
@@ -3310,6 +3391,8 @@ static void handle_session(struct ceph_mds_session *session,
session->s_state = CEPH_MDS_SESSION_OPEN;
session->s_features = features;
renewed_caps(mdsc, session, 0);
+ if (test_bit(CEPHFS_FEATURE_METRIC_COLLECT, &session->s_features))
+ metric_schedule_delayed(&mdsc->metric);
wake = 1;
if (mdsc->stopping)
__close_session(mdsc, session);
@@ -4263,6 +4346,30 @@ static void maybe_recover_session(struct ceph_mds_client *mdsc)
ceph_force_reconnect(fsc->sb);
}
+bool check_session_state(struct ceph_mds_session *s)
+{
+ if (s->s_state == CEPH_MDS_SESSION_CLOSING) {
+ dout("resending session close request for mds%d\n",
+ s->s_mds);
+ request_close_session(s);
+ return false;
+ }
+ if (s->s_ttl && time_after(jiffies, s->s_ttl)) {
+ if (s->s_state == CEPH_MDS_SESSION_OPEN) {
+ s->s_state = CEPH_MDS_SESSION_HUNG;
+ pr_info("mds%d hung\n", s->s_mds);
+ }
+ }
+ if (s->s_state == CEPH_MDS_SESSION_NEW ||
+ s->s_state == CEPH_MDS_SESSION_RESTARTING ||
+ s->s_state == CEPH_MDS_SESSION_CLOSED ||
+ s->s_state == CEPH_MDS_SESSION_REJECTED)
+ /* this mds is failed or recovering, just wait */
+ return false;
+
+ return true;
+}
+
/*
* delayed work -- periodically trim expired leases, renew caps with mds
*/
@@ -4283,6 +4390,9 @@ static void delayed_work(struct work_struct *work)
dout("mdsc delayed_work\n");
+ if (mdsc->stopping)
+ return;
+
mutex_lock(&mdsc->mutex);
renew_interval = mdsc->mdsmap->m_session_timeout >> 2;
renew_caps = time_after_eq(jiffies, HZ*renew_interval +
@@ -4294,23 +4404,8 @@ static void delayed_work(struct work_struct *work)
struct ceph_mds_session *s = __ceph_lookup_mds_session(mdsc, i);
if (!s)
continue;
- if (s->s_state == CEPH_MDS_SESSION_CLOSING) {
- dout("resending session close request for mds%d\n",
- s->s_mds);
- request_close_session(mdsc, s);
- ceph_put_mds_session(s);
- continue;
- }
- if (s->s_ttl && time_after(jiffies, s->s_ttl)) {
- if (s->s_state == CEPH_MDS_SESSION_OPEN) {
- s->s_state = CEPH_MDS_SESSION_HUNG;
- pr_info("mds%d hung\n", s->s_mds);
- }
- }
- if (s->s_state == CEPH_MDS_SESSION_NEW ||
- s->s_state == CEPH_MDS_SESSION_RESTARTING ||
- s->s_state == CEPH_MDS_SESSION_REJECTED) {
- /* this mds is failed or recovering, just wait */
+
+ if (!check_session_state(s)) {
ceph_put_mds_session(s);
continue;
}
@@ -4359,7 +4454,6 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
goto err_mdsc;
}
- fsc->mdsc = mdsc;
init_completion(&mdsc->safe_umount_waiters);
init_waitqueue_head(&mdsc->session_close_wq);
INIT_LIST_HEAD(&mdsc->waiting_for_map);
@@ -4414,6 +4508,8 @@ int ceph_mdsc_init(struct ceph_fs_client *fsc)
strscpy(mdsc->nodename, utsname()->nodename,
sizeof(mdsc->nodename));
+
+ fsc->mdsc = mdsc;
return 0;
err_mdsmap:
@@ -4657,7 +4753,16 @@ void ceph_mdsc_force_umount(struct ceph_mds_client *mdsc)
static void ceph_mdsc_stop(struct ceph_mds_client *mdsc)
{
dout("stop\n");
- cancel_delayed_work_sync(&mdsc->delayed_work); /* cancel timer */
+ /*
+ * Make sure the delayed work stopped before releasing
+ * the resources.
+ *
+ * Because the cancel_delayed_work_sync() will only
+ * guarantee that the work finishes executing. But the
+ * delayed work will re-arm itself again after that.
+ */
+ flush_delayed_work(&mdsc->delayed_work);
+
if (mdsc->mdsmap)
ceph_mdsmap_destroy(mdsc->mdsmap);
kfree(mdsc->sessions);
@@ -4680,6 +4785,7 @@ void ceph_mdsc_destroy(struct ceph_fs_client *fsc)
ceph_metric_destroy(&mdsc->metric);
+ flush_delayed_work(&mdsc->metric.delayed_work);
fsc->mdsc = NULL;
kfree(mdsc);
dout("mdsc_destroy %p done\n", mdsc);
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index 5e0c4073a6be..bc9e95937d7c 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -18,6 +18,7 @@
#include <linux/ceph/auth.h>
#include "metric.h"
+#include "super.h"
/* The first 8 bits are reserved for old ceph releases */
enum ceph_feature_type {
@@ -27,8 +28,9 @@ enum ceph_feature_type {
CEPHFS_FEATURE_LAZY_CAP_WANTED,
CEPHFS_FEATURE_MULTI_RECONNECT,
CEPHFS_FEATURE_DELEG_INO,
+ CEPHFS_FEATURE_METRIC_COLLECT,
- CEPHFS_FEATURE_MAX = CEPHFS_FEATURE_DELEG_INO,
+ CEPHFS_FEATURE_MAX = CEPHFS_FEATURE_METRIC_COLLECT,
};
/*
@@ -42,6 +44,7 @@ enum ceph_feature_type {
CEPHFS_FEATURE_LAZY_CAP_WANTED, \
CEPHFS_FEATURE_MULTI_RECONNECT, \
CEPHFS_FEATURE_DELEG_INO, \
+ CEPHFS_FEATURE_METRIC_COLLECT, \
\
CEPHFS_FEATURE_MAX, \
}
@@ -476,6 +479,8 @@ struct ceph_mds_client {
extern const char *ceph_mds_op_name(int op);
+extern bool check_session_state(struct ceph_mds_session *s);
+
extern struct ceph_mds_session *
__ceph_lookup_mds_session(struct ceph_mds_client *, int mds);
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 889627817e52..e4aba6c6d3b5 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -120,7 +120,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
const void *start = *p;
int i, j, n;
int err;
- u8 mdsmap_v, mdsmap_cv;
+ u8 mdsmap_v;
u16 mdsmap_ev;
m = kzalloc(sizeof(*m), GFP_NOFS);
@@ -129,7 +129,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
ceph_decode_need(p, end, 1 + 1, bad);
mdsmap_v = ceph_decode_8(p);
- mdsmap_cv = ceph_decode_8(p);
+ *p += sizeof(u8); /* mdsmap_cv */
if (mdsmap_v >= 4) {
u32 mdsmap_len;
ceph_decode_32_safe(p, end, mdsmap_len, bad);
@@ -174,7 +174,6 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
u64 global_id;
u32 namelen;
s32 mds, inc, state;
- u64 state_seq;
u8 info_v;
void *info_end = NULL;
struct ceph_entity_addr addr;
@@ -189,9 +188,8 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
info_v= ceph_decode_8(p);
if (info_v >= 4) {
u32 info_len;
- u8 info_cv;
ceph_decode_need(p, end, 1 + sizeof(u32), bad);
- info_cv = ceph_decode_8(p);
+ *p += sizeof(u8); /* info_cv */
info_len = ceph_decode_32(p);
info_end = *p + info_len;
if (info_end > end)
@@ -210,7 +208,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
mds = ceph_decode_32(p);
inc = ceph_decode_32(p);
state = ceph_decode_32(p);
- state_seq = ceph_decode_64(p);
+ *p += sizeof(u64); /* state_seq */
err = ceph_decode_entity_addr(p, end, &addr);
if (err)
goto corrupt;
diff --git a/fs/ceph/metric.c b/fs/ceph/metric.c
index 9217f35bc2b9..2466b261fba2 100644
--- a/fs/ceph/metric.c
+++ b/fs/ceph/metric.c
@@ -1,10 +1,150 @@
/* SPDX-License-Identifier: GPL-2.0 */
+#include <linux/ceph/ceph_debug.h>
#include <linux/types.h>
#include <linux/percpu_counter.h>
#include <linux/math64.h>
#include "metric.h"
+#include "mds_client.h"
+
+static bool ceph_mdsc_send_metrics(struct ceph_mds_client *mdsc,
+ struct ceph_mds_session *s)
+{
+ struct ceph_metric_head *head;
+ struct ceph_metric_cap *cap;
+ struct ceph_metric_read_latency *read;
+ struct ceph_metric_write_latency *write;
+ struct ceph_metric_metadata_latency *meta;
+ struct ceph_client_metric *m = &mdsc->metric;
+ u64 nr_caps = atomic64_read(&m->total_caps);
+ struct ceph_msg *msg;
+ struct timespec64 ts;
+ s64 sum;
+ s32 items = 0;
+ s32 len;
+
+ len = sizeof(*head) + sizeof(*cap) + sizeof(*read) + sizeof(*write)
+ + sizeof(*meta);
+
+ msg = ceph_msg_new(CEPH_MSG_CLIENT_METRICS, len, GFP_NOFS, true);
+ if (!msg) {
+ pr_err("send metrics to mds%d, failed to allocate message\n",
+ s->s_mds);
+ return false;
+ }
+
+ head = msg->front.iov_base;
+
+ /* encode the cap metric */
+ cap = (struct ceph_metric_cap *)(head + 1);
+ cap->type = cpu_to_le32(CLIENT_METRIC_TYPE_CAP_INFO);
+ cap->ver = 1;
+ cap->compat = 1;
+ cap->data_len = cpu_to_le32(sizeof(*cap) - 10);
+ cap->hit = cpu_to_le64(percpu_counter_sum(&mdsc->metric.i_caps_hit));
+ cap->mis = cpu_to_le64(percpu_counter_sum(&mdsc->metric.i_caps_mis));
+ cap->total = cpu_to_le64(nr_caps);
+ items++;
+
+ /* encode the read latency metric */
+ read = (struct ceph_metric_read_latency *)(cap + 1);
+ read->type = cpu_to_le32(CLIENT_METRIC_TYPE_READ_LATENCY);
+ read->ver = 1;
+ read->compat = 1;
+ read->data_len = cpu_to_le32(sizeof(*read) - 10);
+ sum = m->read_latency_sum;
+ jiffies_to_timespec64(sum, &ts);
+ read->sec = cpu_to_le32(ts.tv_sec);
+ read->nsec = cpu_to_le32(ts.tv_nsec);
+ items++;
+
+ /* encode the write latency metric */
+ write = (struct ceph_metric_write_latency *)(read + 1);
+ write->type = cpu_to_le32(CLIENT_METRIC_TYPE_WRITE_LATENCY);
+ write->ver = 1;
+ write->compat = 1;
+ write->data_len = cpu_to_le32(sizeof(*write) - 10);
+ sum = m->write_latency_sum;
+ jiffies_to_timespec64(sum, &ts);
+ write->sec = cpu_to_le32(ts.tv_sec);
+ write->nsec = cpu_to_le32(ts.tv_nsec);
+ items++;
+
+ /* encode the metadata latency metric */
+ meta = (struct ceph_metric_metadata_latency *)(write + 1);
+ meta->type = cpu_to_le32(CLIENT_METRIC_TYPE_METADATA_LATENCY);
+ meta->ver = 1;
+ meta->compat = 1;
+ meta->data_len = cpu_to_le32(sizeof(*meta) - 10);
+ sum = m->metadata_latency_sum;
+ jiffies_to_timespec64(sum, &ts);
+ meta->sec = cpu_to_le32(ts.tv_sec);
+ meta->nsec = cpu_to_le32(ts.tv_nsec);
+ items++;
+
+ put_unaligned_le32(items, &head->num);
+ msg->front.iov_len = len;
+ msg->hdr.version = cpu_to_le16(1);
+ msg->hdr.compat_version = cpu_to_le16(1);
+ msg->hdr.front_len = cpu_to_le32(msg->front.iov_len);
+ dout("client%llu send metrics to mds%d\n",
+ ceph_client_gid(mdsc->fsc->client), s->s_mds);
+ ceph_con_send(&s->s_con, msg);
+
+ return true;
+}
+
+
+static void metric_get_session(struct ceph_mds_client *mdsc)
+{
+ struct ceph_mds_session *s;
+ int i;
+
+ mutex_lock(&mdsc->mutex);
+ for (i = 0; i < mdsc->max_sessions; i++) {
+ s = __ceph_lookup_mds_session(mdsc, i);
+ if (!s)
+ continue;
+
+ /*
+ * Skip it if MDS doesn't support the metric collection,
+ * or the MDS will close the session's socket connection
+ * directly when it get this message.
+ */
+ if (check_session_state(s) &&
+ test_bit(CEPHFS_FEATURE_METRIC_COLLECT, &s->s_features)) {
+ mdsc->metric.session = s;
+ break;
+ }
+
+ ceph_put_mds_session(s);
+ }
+ mutex_unlock(&mdsc->mutex);
+}
+
+static void metric_delayed_work(struct work_struct *work)
+{
+ struct ceph_client_metric *m =
+ container_of(work, struct ceph_client_metric, delayed_work.work);
+ struct ceph_mds_client *mdsc =
+ container_of(m, struct ceph_mds_client, metric);
+
+ if (mdsc->stopping)
+ return;
+
+ if (!m->session || !check_session_state(m->session)) {
+ if (m->session) {
+ ceph_put_mds_session(m->session);
+ m->session = NULL;
+ }
+ metric_get_session(mdsc);
+ }
+ if (m->session) {
+ ceph_mdsc_send_metrics(mdsc, m->session);
+ metric_schedule_delayed(m);
+ }
+}
int ceph_metric_init(struct ceph_client_metric *m)
{
@@ -22,6 +162,7 @@ int ceph_metric_init(struct ceph_client_metric *m)
if (ret)
goto err_d_lease_mis;
+ atomic64_set(&m->total_caps, 0);
ret = percpu_counter_init(&m->i_caps_hit, 0, GFP_KERNEL);
if (ret)
goto err_i_caps_hit;
@@ -51,6 +192,9 @@ int ceph_metric_init(struct ceph_client_metric *m)
m->total_metadatas = 0;
m->metadata_latency_sum = 0;
+ m->session = NULL;
+ INIT_DELAYED_WORK(&m->delayed_work, metric_delayed_work);
+
return 0;
err_i_caps_mis:
@@ -72,6 +216,11 @@ void ceph_metric_destroy(struct ceph_client_metric *m)
percpu_counter_destroy(&m->i_caps_hit);
percpu_counter_destroy(&m->d_lease_mis);
percpu_counter_destroy(&m->d_lease_hit);
+
+ cancel_delayed_work_sync(&m->delayed_work);
+
+ if (m->session)
+ ceph_put_mds_session(m->session);
}
static inline void __update_latency(ktime_t *totalp, ktime_t *lsump,
diff --git a/fs/ceph/metric.h b/fs/ceph/metric.h
index ccd81285a450..1d0959d669d7 100644
--- a/fs/ceph/metric.h
+++ b/fs/ceph/metric.h
@@ -6,12 +6,91 @@
#include <linux/percpu_counter.h>
#include <linux/ktime.h>
+extern bool disable_send_metrics;
+
+enum ceph_metric_type {
+ CLIENT_METRIC_TYPE_CAP_INFO,
+ CLIENT_METRIC_TYPE_READ_LATENCY,
+ CLIENT_METRIC_TYPE_WRITE_LATENCY,
+ CLIENT_METRIC_TYPE_METADATA_LATENCY,
+ CLIENT_METRIC_TYPE_DENTRY_LEASE,
+
+ CLIENT_METRIC_TYPE_MAX = CLIENT_METRIC_TYPE_DENTRY_LEASE,
+};
+
+/*
+ * This will always have the highest metric bit value
+ * as the last element of the array.
+ */
+#define CEPHFS_METRIC_SPEC_CLIENT_SUPPORTED { \
+ CLIENT_METRIC_TYPE_CAP_INFO, \
+ CLIENT_METRIC_TYPE_READ_LATENCY, \
+ CLIENT_METRIC_TYPE_WRITE_LATENCY, \
+ CLIENT_METRIC_TYPE_METADATA_LATENCY, \
+ \
+ CLIENT_METRIC_TYPE_MAX, \
+}
+
+/* metric caps header */
+struct ceph_metric_cap {
+ __le32 type; /* ceph metric type */
+
+ __u8 ver;
+ __u8 compat;
+
+ __le32 data_len; /* length of sizeof(hit + mis + total) */
+ __le64 hit;
+ __le64 mis;
+ __le64 total;
+} __packed;
+
+/* metric read latency header */
+struct ceph_metric_read_latency {
+ __le32 type; /* ceph metric type */
+
+ __u8 ver;
+ __u8 compat;
+
+ __le32 data_len; /* length of sizeof(sec + nsec) */
+ __le32 sec;
+ __le32 nsec;
+} __packed;
+
+/* metric write latency header */
+struct ceph_metric_write_latency {
+ __le32 type; /* ceph metric type */
+
+ __u8 ver;
+ __u8 compat;
+
+ __le32 data_len; /* length of sizeof(sec + nsec) */
+ __le32 sec;
+ __le32 nsec;
+} __packed;
+
+/* metric metadata latency header */
+struct ceph_metric_metadata_latency {
+ __le32 type; /* ceph metric type */
+
+ __u8 ver;
+ __u8 compat;
+
+ __le32 data_len; /* length of sizeof(sec + nsec) */
+ __le32 sec;
+ __le32 nsec;
+} __packed;
+
+struct ceph_metric_head {
+ __le32 num; /* the number of metrics that will be sent */
+} __packed;
+
/* This is the global metrics */
struct ceph_client_metric {
atomic64_t total_dentries;
struct percpu_counter d_lease_hit;
struct percpu_counter d_lease_mis;
+ atomic64_t total_caps;
struct percpu_counter i_caps_hit;
struct percpu_counter i_caps_mis;
@@ -35,8 +114,20 @@ struct ceph_client_metric {
ktime_t metadata_latency_sq_sum;
ktime_t metadata_latency_min;
ktime_t metadata_latency_max;
+
+ struct ceph_mds_session *session;
+ struct delayed_work delayed_work; /* delayed work */
};
+static inline void metric_schedule_delayed(struct ceph_client_metric *m)
+{
+ if (disable_send_metrics)
+ return;
+
+ /* per second */
+ schedule_delayed_work(&m->delayed_work, round_jiffies_relative(HZ));
+}
+
extern int ceph_metric_init(struct ceph_client_metric *m);
extern void ceph_metric_destroy(struct ceph_client_metric *m);
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index c9784eb1159a..7ec0e6d03d10 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -27,6 +27,9 @@
#include <linux/ceph/auth.h>
#include <linux/ceph/debugfs.h>
+static DEFINE_SPINLOCK(ceph_fsc_lock);
+static LIST_HEAD(ceph_fsc_list);
+
/*
* Ceph superblock operations
*
@@ -634,8 +637,6 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
struct ceph_options *opt)
{
struct ceph_fs_client *fsc;
- int page_count;
- size_t size;
int err;
fsc = kzalloc(sizeof(*fsc), GFP_KERNEL);
@@ -683,18 +684,12 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
if (!fsc->cap_wq)
goto fail_inode_wq;
- /* set up mempools */
- err = -ENOMEM;
- page_count = fsc->mount_options->wsize >> PAGE_SHIFT;
- size = sizeof (struct page *) * (page_count ? page_count : 1);
- fsc->wb_pagevec_pool = mempool_create_kmalloc_pool(10, size);
- if (!fsc->wb_pagevec_pool)
- goto fail_cap_wq;
+ spin_lock(&ceph_fsc_lock);
+ list_add_tail(&fsc->metric_wakeup, &ceph_fsc_list);
+ spin_unlock(&ceph_fsc_lock);
return fsc;
-fail_cap_wq:
- destroy_workqueue(fsc->cap_wq);
fail_inode_wq:
destroy_workqueue(fsc->inode_wq);
fail_client:
@@ -717,12 +712,14 @@ static void destroy_fs_client(struct ceph_fs_client *fsc)
{
dout("destroy_fs_client %p\n", fsc);
+ spin_lock(&ceph_fsc_lock);
+ list_del(&fsc->metric_wakeup);
+ spin_unlock(&ceph_fsc_lock);
+
ceph_mdsc_destroy(fsc);
destroy_workqueue(fsc->inode_wq);
destroy_workqueue(fsc->cap_wq);
- mempool_destroy(fsc->wb_pagevec_pool);
-
destroy_mount_options(fsc->mount_options);
ceph_destroy_client(fsc->client);
@@ -741,6 +738,7 @@ struct kmem_cache *ceph_dentry_cachep;
struct kmem_cache *ceph_file_cachep;
struct kmem_cache *ceph_dir_file_cachep;
struct kmem_cache *ceph_mds_request_cachep;
+mempool_t *ceph_wb_pagevec_pool;
static void ceph_inode_init_once(void *foo)
{
@@ -785,6 +783,10 @@ static int __init init_caches(void)
if (!ceph_mds_request_cachep)
goto bad_mds_req;
+ ceph_wb_pagevec_pool = mempool_create_kmalloc_pool(10, CEPH_MAX_WRITE_SIZE >> PAGE_SHIFT);
+ if (!ceph_wb_pagevec_pool)
+ goto bad_pagevec_pool;
+
error = ceph_fscache_register();
if (error)
goto bad_fscache;
@@ -793,6 +795,8 @@ static int __init init_caches(void)
bad_fscache:
kmem_cache_destroy(ceph_mds_request_cachep);
+bad_pagevec_pool:
+ mempool_destroy(ceph_wb_pagevec_pool);
bad_mds_req:
kmem_cache_destroy(ceph_dir_file_cachep);
bad_dir_file:
@@ -823,12 +827,13 @@ static void destroy_caches(void)
kmem_cache_destroy(ceph_file_cachep);
kmem_cache_destroy(ceph_dir_file_cachep);
kmem_cache_destroy(ceph_mds_request_cachep);
+ mempool_destroy(ceph_wb_pagevec_pool);
ceph_fscache_unregister();
}
/*
- * ceph_umount_begin - initiate forced umount. Tear down down the
+ * ceph_umount_begin - initiate forced umount. Tear down the
* mount, skipping steps that may hang while waiting for server(s).
*/
static void ceph_umount_begin(struct super_block *sb)
@@ -1282,6 +1287,37 @@ static void __exit exit_ceph(void)
destroy_caches();
}
+static int param_set_metrics(const char *val, const struct kernel_param *kp)
+{
+ struct ceph_fs_client *fsc;
+ int ret;
+
+ ret = param_set_bool(val, kp);
+ if (ret) {
+ pr_err("Failed to parse sending metrics switch value '%s'\n",
+ val);
+ return ret;
+ } else if (!disable_send_metrics) {
+ // wake up all the mds clients
+ spin_lock(&ceph_fsc_lock);
+ list_for_each_entry(fsc, &ceph_fsc_list, metric_wakeup) {
+ metric_schedule_delayed(&fsc->mdsc->metric);
+ }
+ spin_unlock(&ceph_fsc_lock);
+ }
+
+ return 0;
+}
+
+static const struct kernel_param_ops param_ops_metrics = {
+ .set = param_set_metrics,
+ .get = param_get_bool,
+};
+
+bool disable_send_metrics = false;
+module_param_cb(disable_send_metrics, &param_ops_metrics, &disable_send_metrics, 0644);
+MODULE_PARM_DESC(disable_send_metrics, "Enable sending perf metrics to ceph cluster (default: on)");
+
module_init(init_ceph);
module_exit(exit_ceph);
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 5a6cdd39bc10..4c3c964b1c54 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -101,6 +101,8 @@ struct ceph_mount_options {
struct ceph_fs_client {
struct super_block *sb;
+ struct list_head metric_wakeup;
+
struct ceph_mount_options *mount_options;
struct ceph_client *client;
@@ -116,8 +118,6 @@ struct ceph_fs_client {
struct ceph_mds_client *mdsc;
- /* writeback */
- mempool_t *wb_pagevec_pool;
atomic_long_t writeback_count;
struct workqueue_struct *inode_wq;
@@ -353,7 +353,7 @@ struct ceph_inode_info {
unsigned i_dirty_caps, i_flushing_caps; /* mask of dirtied fields */
/*
- * Link to the the auth cap's session's s_cap_dirty list. s_cap_dirty
+ * Link to the auth cap's session's s_cap_dirty list. s_cap_dirty
* is protected by the mdsc->cap_dirty_lock, but each individual item
* is also protected by the inode's i_ceph_lock. Walking s_cap_dirty
* requires the mdsc->cap_dirty_lock. List presence for an item can
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index 71ee34d160c3..3a733ac33d9b 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -497,10 +497,10 @@ static int __set_xattr(struct ceph_inode_info *ci,
kfree(*newxattr);
*newxattr = NULL;
if (xattr->should_free_val)
- kfree((void *)xattr->val);
+ kfree(xattr->val);
if (update_xattr) {
- kfree((void *)name);
+ kfree(name);
name = xattr->name;
}
ci->i_xattrs.names_size -= xattr->name_len;
@@ -566,9 +566,9 @@ static void __free_xattr(struct ceph_inode_xattr *xattr)
BUG_ON(!xattr);
if (xattr->should_free_name)
- kfree((void *)xattr->name);
+ kfree(xattr->name);
if (xattr->should_free_val)
- kfree((void *)xattr->val);
+ kfree(xattr->val);
kfree(xattr);
}
@@ -582,9 +582,9 @@ static int __remove_xattr(struct ceph_inode_info *ci,
rb_erase(&xattr->node, &ci->i_xattrs.index);
if (xattr->should_free_name)
- kfree((void *)xattr->name);
+ kfree(xattr->name);
if (xattr->should_free_val)
- kfree((void *)xattr->val);
+ kfree(xattr->val);
ci->i_xattrs.names_size -= xattr->name_len;
ci->i_xattrs.vals_size -= xattr->val_len;
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-29 01:18:05 +0000