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-rw-r--r--fs/ceph/Makefile2
-rw-r--r--fs/ceph/acl.c4
-rw-r--r--fs/ceph/caps.c3
-rw-r--r--fs/ceph/debugfs.c2
-rw-r--r--fs/ceph/dir.c4
-rw-r--r--fs/ceph/file.c11
-rw-r--r--fs/ceph/inode.c47
-rw-r--r--fs/ceph/mds_client.c171
-rw-r--r--fs/ceph/mds_client.h39
-rw-r--r--fs/ceph/mdsmap.c91
-rw-r--r--fs/ceph/super.c128
-rw-r--r--fs/ceph/super.h2
-rw-r--r--fs/ceph/util.c100
-rw-r--r--fs/ceph/xattr.c7
14 files changed, 436 insertions, 175 deletions
diff --git a/fs/ceph/Makefile b/fs/ceph/Makefile
index c1da294418d1..0a0823d378db 100644
--- a/fs/ceph/Makefile
+++ b/fs/ceph/Makefile
@@ -8,7 +8,7 @@ obj-$(CONFIG_CEPH_FS) += ceph.o
ceph-y := super.o inode.o dir.o file.o locks.o addr.o ioctl.o \
export.o caps.o snap.o xattr.o quota.o io.o \
mds_client.o mdsmap.o strings.o ceph_frag.o \
- debugfs.o
+ debugfs.o util.o
ceph-$(CONFIG_CEPH_FSCACHE) += cache.o
ceph-$(CONFIG_CEPH_FS_POSIX_ACL) += acl.o
diff --git a/fs/ceph/acl.c b/fs/ceph/acl.c
index aa55f412a6e3..26be6520d3fb 100644
--- a/fs/ceph/acl.c
+++ b/fs/ceph/acl.c
@@ -222,8 +222,8 @@ int ceph_pre_init_acls(struct inode *dir, umode_t *mode,
err = ceph_pagelist_reserve(pagelist, len + val_size2 + 8);
if (err)
goto out_err;
- err = ceph_pagelist_encode_string(pagelist,
- XATTR_NAME_POSIX_ACL_DEFAULT, len);
+ ceph_pagelist_encode_string(pagelist,
+ XATTR_NAME_POSIX_ACL_DEFAULT, len);
err = posix_acl_to_xattr(&init_user_ns, default_acl,
tmp_buf, val_size2);
if (err < 0)
diff --git a/fs/ceph/caps.c b/fs/ceph/caps.c
index 9d09bb53c1ab..28ae0c134700 100644
--- a/fs/ceph/caps.c
+++ b/fs/ceph/caps.c
@@ -908,7 +908,8 @@ int __ceph_caps_issued_mask(struct ceph_inode_info *ci, int mask, int touch)
ci_node);
if (!__cap_is_valid(cap))
continue;
- __touch_cap(cap);
+ if (cap->issued & mask)
+ __touch_cap(cap);
}
}
return 1;
diff --git a/fs/ceph/debugfs.c b/fs/ceph/debugfs.c
index c281f32b54f7..fb7cabd98e7b 100644
--- a/fs/ceph/debugfs.c
+++ b/fs/ceph/debugfs.c
@@ -33,7 +33,7 @@ static int mdsmap_show(struct seq_file *s, void *p)
seq_printf(s, "max_mds %d\n", mdsmap->m_max_mds);
seq_printf(s, "session_timeout %d\n", mdsmap->m_session_timeout);
seq_printf(s, "session_autoclose %d\n", mdsmap->m_session_autoclose);
- for (i = 0; i < mdsmap->m_num_mds; i++) {
+ for (i = 0; i < mdsmap->possible_max_rank; i++) {
struct ceph_entity_addr *addr = &mdsmap->m_info[i].addr;
int state = mdsmap->m_info[i].state;
seq_printf(s, "\tmds%d\t%s\t(%s)\n", i,
diff --git a/fs/ceph/dir.c b/fs/ceph/dir.c
index 2e4764fd1872..d0cd0aba5843 100644
--- a/fs/ceph/dir.c
+++ b/fs/ceph/dir.c
@@ -1186,7 +1186,7 @@ void __ceph_dentry_dir_lease_touch(struct ceph_dentry_info *di)
struct dentry *dn = di->dentry;
struct ceph_mds_client *mdsc;
- dout("dentry_dir_lease_touch %p %p '%pd' (offset %lld)\n",
+ dout("dentry_dir_lease_touch %p %p '%pd' (offset 0x%llx)\n",
di, dn, dn, di->offset);
if (!list_empty(&di->lease_list)) {
@@ -1567,7 +1567,7 @@ static int ceph_d_revalidate(struct dentry *dentry, unsigned int flags)
inode = d_inode(dentry);
}
- dout("d_revalidate %p '%pd' inode %p offset %lld\n", dentry,
+ dout("d_revalidate %p '%pd' inode %p offset 0x%llx\n", dentry,
dentry, inode, ceph_dentry(dentry)->offset);
/* always trust cached snapped dentries, snapdir dentry */
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 11929d2bb594..c3b8e8e0bf17 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -1974,6 +1974,9 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
if (ceph_test_mount_opt(src_fsc, NOCOPYFROM))
return -EOPNOTSUPP;
+ if (!src_fsc->have_copy_from2)
+ return -EOPNOTSUPP;
+
/*
* Striped file layouts require that we copy partial objects, but the
* OSD copy-from operation only supports full-object copies. Limit
@@ -2101,8 +2104,14 @@ static ssize_t __ceph_copy_file_range(struct file *src_file, loff_t src_off,
CEPH_OSD_OP_FLAG_FADVISE_NOCACHE,
&dst_oid, &dst_oloc,
CEPH_OSD_OP_FLAG_FADVISE_SEQUENTIAL |
- CEPH_OSD_OP_FLAG_FADVISE_DONTNEED, 0);
+ CEPH_OSD_OP_FLAG_FADVISE_DONTNEED,
+ dst_ci->i_truncate_seq, dst_ci->i_truncate_size,
+ CEPH_OSD_COPY_FROM_FLAG_TRUNCATE_SEQ);
if (err) {
+ if (err == -EOPNOTSUPP) {
+ src_fsc->have_copy_from2 = false;
+ pr_notice("OSDs don't support copy-from2; disabling copy offload\n");
+ }
dout("ceph_osdc_copy_from returned %d\n", err);
if (!ret)
ret = err;
diff --git a/fs/ceph/inode.c b/fs/ceph/inode.c
index c07407586ce8..d01710a16a4a 100644
--- a/fs/ceph/inode.c
+++ b/fs/ceph/inode.c
@@ -55,11 +55,9 @@ struct inode *ceph_get_inode(struct super_block *sb, struct ceph_vino vino)
inode = iget5_locked(sb, t, ceph_ino_compare, ceph_set_ino_cb, &vino);
if (!inode)
return ERR_PTR(-ENOMEM);
- if (inode->i_state & I_NEW) {
+ if (inode->i_state & I_NEW)
dout("get_inode created new inode %p %llx.%llx ino %llx\n",
inode, ceph_vinop(inode), (u64)inode->i_ino);
- unlock_new_inode(inode);
- }
dout("get_inode on %lu=%llx.%llx got %p\n", inode->i_ino, vino.ino,
vino.snap, inode);
@@ -88,6 +86,10 @@ struct inode *ceph_get_snapdir(struct inode *parent)
inode->i_fop = &ceph_snapdir_fops;
ci->i_snap_caps = CEPH_CAP_PIN; /* so we can open */
ci->i_rbytes = 0;
+
+ if (inode->i_state & I_NEW)
+ unlock_new_inode(inode);
+
return inode;
}
@@ -728,8 +730,7 @@ void ceph_fill_file_time(struct inode *inode, int issued,
static int fill_inode(struct inode *inode, struct page *locked_page,
struct ceph_mds_reply_info_in *iinfo,
struct ceph_mds_reply_dirfrag *dirinfo,
- struct ceph_mds_session *session,
- unsigned long ttl_from, int cap_fmode,
+ struct ceph_mds_session *session, int cap_fmode,
struct ceph_cap_reservation *caps_reservation)
{
struct ceph_mds_client *mdsc = ceph_inode_to_client(inode)->mdsc;
@@ -754,8 +755,11 @@ static int fill_inode(struct inode *inode, struct page *locked_page,
info_caps = le32_to_cpu(info->cap.caps);
/* prealloc new cap struct */
- if (info_caps && ceph_snap(inode) == CEPH_NOSNAP)
+ if (info_caps && ceph_snap(inode) == CEPH_NOSNAP) {
new_cap = ceph_get_cap(mdsc, caps_reservation);
+ if (!new_cap)
+ return -ENOMEM;
+ }
/*
* prealloc xattr data, if it looks like we'll need it. only
@@ -1237,7 +1241,7 @@ int ceph_fill_trace(struct super_block *sb, struct ceph_mds_request *req)
if (dir) {
err = fill_inode(dir, NULL,
&rinfo->diri, rinfo->dirfrag,
- session, req->r_request_started, -1,
+ session, -1,
&req->r_caps_reservation);
if (err < 0)
goto done;
@@ -1302,18 +1306,22 @@ retry_lookup:
err = PTR_ERR(in);
goto done;
}
- req->r_target_inode = in;
err = fill_inode(in, req->r_locked_page, &rinfo->targeti, NULL,
- session, req->r_request_started,
+ session,
(!test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags) &&
- rinfo->head->result == 0) ? req->r_fmode : -1,
+ rinfo->head->result == 0) ? req->r_fmode : -1,
&req->r_caps_reservation);
if (err < 0) {
pr_err("fill_inode badness %p %llx.%llx\n",
in, ceph_vinop(in));
+ if (in->i_state & I_NEW)
+ discard_new_inode(in);
goto done;
}
+ req->r_target_inode = in;
+ if (in->i_state & I_NEW)
+ unlock_new_inode(in);
}
/*
@@ -1493,12 +1501,18 @@ static int readdir_prepopulate_inodes_only(struct ceph_mds_request *req,
continue;
}
rc = fill_inode(in, NULL, &rde->inode, NULL, session,
- req->r_request_started, -1,
- &req->r_caps_reservation);
+ -1, &req->r_caps_reservation);
if (rc < 0) {
pr_err("fill_inode badness on %p got %d\n", in, rc);
err = rc;
+ if (in->i_state & I_NEW) {
+ ihold(in);
+ discard_new_inode(in);
+ }
+ } else if (in->i_state & I_NEW) {
+ unlock_new_inode(in);
}
+
/* avoid calling iput_final() in mds dispatch threads */
ceph_async_iput(in);
}
@@ -1694,19 +1708,24 @@ retry_lookup:
}
ret = fill_inode(in, NULL, &rde->inode, NULL, session,
- req->r_request_started, -1,
- &req->r_caps_reservation);
+ -1, &req->r_caps_reservation);
if (ret < 0) {
pr_err("fill_inode badness on %p\n", in);
if (d_really_is_negative(dn)) {
/* avoid calling iput_final() in mds
* dispatch threads */
+ if (in->i_state & I_NEW) {
+ ihold(in);
+ discard_new_inode(in);
+ }
ceph_async_iput(in);
}
d_drop(dn);
err = ret;
goto next_item;
}
+ if (in->i_state & I_NEW)
+ unlock_new_inode(in);
if (d_really_is_negative(dn)) {
if (ceph_security_xattr_deadlock(in)) {
diff --git a/fs/ceph/mds_client.c b/fs/ceph/mds_client.c
index 21ada2c4a88c..bbbbddf71326 100644
--- a/fs/ceph/mds_client.c
+++ b/fs/ceph/mds_client.c
@@ -9,6 +9,7 @@
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/ratelimit.h>
+#include <linux/bits.h>
#include "super.h"
#include "mds_client.h"
@@ -530,6 +531,7 @@ const char *ceph_session_state_name(int s)
case CEPH_MDS_SESSION_OPEN: return "open";
case CEPH_MDS_SESSION_HUNG: return "hung";
case CEPH_MDS_SESSION_CLOSING: return "closing";
+ case CEPH_MDS_SESSION_CLOSED: return "closed";
case CEPH_MDS_SESSION_RESTARTING: return "restarting";
case CEPH_MDS_SESSION_RECONNECTING: return "reconnecting";
case CEPH_MDS_SESSION_REJECTED: return "rejected";
@@ -537,7 +539,7 @@ const char *ceph_session_state_name(int s)
}
}
-static struct ceph_mds_session *get_session(struct ceph_mds_session *s)
+struct ceph_mds_session *ceph_get_mds_session(struct ceph_mds_session *s)
{
if (refcount_inc_not_zero(&s->s_ref)) {
dout("mdsc get_session %p %d -> %d\n", s,
@@ -568,7 +570,7 @@ struct ceph_mds_session *__ceph_lookup_mds_session(struct ceph_mds_client *mdsc,
{
if (mds >= mdsc->max_sessions || !mdsc->sessions[mds])
return NULL;
- return get_session(mdsc->sessions[mds]);
+ return ceph_get_mds_session(mdsc->sessions[mds]);
}
static bool __have_session(struct ceph_mds_client *mdsc, int mds)
@@ -597,7 +599,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
{
struct ceph_mds_session *s;
- if (mds >= mdsc->mdsmap->m_num_mds)
+ if (mds >= mdsc->mdsmap->possible_max_rank)
return ERR_PTR(-EINVAL);
s = kzalloc(sizeof(*s), GFP_NOFS);
@@ -674,7 +676,6 @@ static void __unregister_session(struct ceph_mds_client *mdsc,
dout("__unregister_session mds%d %p\n", s->s_mds, s);
BUG_ON(mdsc->sessions[s->s_mds] != s);
mdsc->sessions[s->s_mds] = NULL;
- s->s_state = 0;
ceph_con_close(&s->s_con);
ceph_put_mds_session(s);
atomic_dec(&mdsc->num_sessions);
@@ -878,7 +879,8 @@ static struct inode *get_nonsnap_parent(struct dentry *dentry)
* Called under mdsc->mutex.
*/
static int __choose_mds(struct ceph_mds_client *mdsc,
- struct ceph_mds_request *req)
+ struct ceph_mds_request *req,
+ bool *random)
{
struct inode *inode;
struct ceph_inode_info *ci;
@@ -888,6 +890,9 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
u32 hash = req->r_direct_hash;
bool is_hash = test_bit(CEPH_MDS_R_DIRECT_IS_HASH, &req->r_req_flags);
+ if (random)
+ *random = false;
+
/*
* is there a specific mds we should try? ignore hint if we have
* no session and the mds is not up (active or recovering).
@@ -895,7 +900,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
if (req->r_resend_mds >= 0 &&
(__have_session(mdsc, req->r_resend_mds) ||
ceph_mdsmap_get_state(mdsc->mdsmap, req->r_resend_mds) > 0)) {
- dout("choose_mds using resend_mds mds%d\n",
+ dout("%s using resend_mds mds%d\n", __func__,
req->r_resend_mds);
return req->r_resend_mds;
}
@@ -913,7 +918,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
rcu_read_lock();
inode = get_nonsnap_parent(req->r_dentry);
rcu_read_unlock();
- dout("__choose_mds using snapdir's parent %p\n", inode);
+ dout("%s using snapdir's parent %p\n", __func__, inode);
}
} else if (req->r_dentry) {
/* ignore race with rename; old or new d_parent is okay */
@@ -933,7 +938,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
/* direct snapped/virtual snapdir requests
* based on parent dir inode */
inode = get_nonsnap_parent(parent);
- dout("__choose_mds using nonsnap parent %p\n", inode);
+ dout("%s using nonsnap parent %p\n", __func__, inode);
} else {
/* dentry target */
inode = d_inode(req->r_dentry);
@@ -949,8 +954,8 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
rcu_read_unlock();
}
- dout("__choose_mds %p is_hash=%d (%d) mode %d\n", inode, (int)is_hash,
- (int)hash, mode);
+ dout("%s %p is_hash=%d (0x%x) mode %d\n", __func__, inode, (int)is_hash,
+ hash, mode);
if (!inode)
goto random;
ci = ceph_inode(inode);
@@ -968,30 +973,33 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
get_random_bytes(&r, 1);
r %= frag.ndist;
mds = frag.dist[r];
- dout("choose_mds %p %llx.%llx "
- "frag %u mds%d (%d/%d)\n",
- inode, ceph_vinop(inode),
- frag.frag, mds,
- (int)r, frag.ndist);
+ dout("%s %p %llx.%llx frag %u mds%d (%d/%d)\n",
+ __func__, inode, ceph_vinop(inode),
+ frag.frag, mds, (int)r, frag.ndist);
if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
- CEPH_MDS_STATE_ACTIVE)
+ CEPH_MDS_STATE_ACTIVE &&
+ !ceph_mdsmap_is_laggy(mdsc->mdsmap, mds))
goto out;
}
/* since this file/dir wasn't known to be
* replicated, then we want to look for the
* authoritative mds. */
- mode = USE_AUTH_MDS;
if (frag.mds >= 0) {
/* choose auth mds */
mds = frag.mds;
- dout("choose_mds %p %llx.%llx "
- "frag %u mds%d (auth)\n",
- inode, ceph_vinop(inode), frag.frag, mds);
+ dout("%s %p %llx.%llx frag %u mds%d (auth)\n",
+ __func__, inode, ceph_vinop(inode),
+ frag.frag, mds);
if (ceph_mdsmap_get_state(mdsc->mdsmap, mds) >=
- CEPH_MDS_STATE_ACTIVE)
- goto out;
+ CEPH_MDS_STATE_ACTIVE) {
+ if (mode == USE_ANY_MDS &&
+ !ceph_mdsmap_is_laggy(mdsc->mdsmap,
+ mds))
+ goto out;
+ }
}
+ mode = USE_AUTH_MDS;
}
}
@@ -1007,7 +1015,7 @@ static int __choose_mds(struct ceph_mds_client *mdsc,
goto random;
}
mds = cap->session->s_mds;
- dout("choose_mds %p %llx.%llx mds%d (%scap %p)\n",
+ dout("%s %p %llx.%llx mds%d (%scap %p)\n", __func__,
inode, ceph_vinop(inode), mds,
cap == ci->i_auth_cap ? "auth " : "", cap);
spin_unlock(&ci->i_ceph_lock);
@@ -1018,8 +1026,11 @@ out:
return mds;
random:
+ if (random)
+ *random = true;
+
mds = ceph_mdsmap_get_random_mds(mdsc->mdsmap);
- dout("choose_mds chose random mds%d\n", mds);
+ dout("%s chose random mds%d\n", __func__, mds);
return mds;
}
@@ -1045,20 +1056,21 @@ static struct ceph_msg *create_session_msg(u32 op, u64 seq)
return msg;
}
+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 const unsigned char bits[] = CEPHFS_FEATURES_CLIENT_SUPPORTED;
- static const size_t count = ARRAY_SIZE(bits);
+ static const size_t count = ARRAY_SIZE(feature_bits);
if (count > 0) {
size_t i;
- size_t size = ((size_t)bits[count - 1] + 64) / 64 * 8;
+ size_t size = FEATURE_BYTES(count);
BUG_ON(*p + 4 + size > end);
ceph_encode_32(p, size);
memset(*p, 0, size);
for (i = 0; i < count; i++)
- ((unsigned char*)(*p))[i / 8] |= 1 << (bits[i] % 8);
+ ((unsigned char*)(*p))[i / 8] |= BIT(feature_bits[i] % 8);
*p += size;
} else {
BUG_ON(*p + 4 > end);
@@ -1079,6 +1091,7 @@ static struct ceph_msg *create_session_open_msg(struct ceph_mds_client *mdsc, u6
int metadata_key_count = 0;
struct ceph_options *opt = mdsc->fsc->client->options;
struct ceph_mount_options *fsopt = mdsc->fsc->mount_options;
+ size_t size, count;
void *p, *end;
const char* metadata[][2] = {
@@ -1096,8 +1109,13 @@ static struct ceph_msg *create_session_open_msg(struct ceph_mds_client *mdsc, u6
strlen(metadata[i][1]);
metadata_key_count++;
}
+
/* supported feature */
- extra_bytes += 4 + 8;
+ size = 0;
+ count = ARRAY_SIZE(feature_bits);
+ if (count > 0)
+ size = FEATURE_BYTES(count);
+ extra_bytes += 4 + size;
/* Allocate the message */
msg = ceph_msg_new(CEPH_MSG_CLIENT_SESSION, sizeof(*h) + extra_bytes,
@@ -1117,7 +1135,7 @@ 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 v2
+ * ClientSession messages with metadata are v3
*/
msg->hdr.version = cpu_to_le16(3);
msg->hdr.compat_version = cpu_to_le16(1);
@@ -1219,7 +1237,7 @@ static void __open_export_target_sessions(struct ceph_mds_client *mdsc,
struct ceph_mds_session *ts;
int i, mds = session->s_mds;
- if (mds >= mdsc->mdsmap->m_num_mds)
+ if (mds >= mdsc->mdsmap->possible_max_rank)
return;
mi = &mdsc->mdsmap->m_info[mds];
@@ -1967,7 +1985,7 @@ void ceph_flush_cap_releases(struct ceph_mds_client *mdsc,
if (mdsc->stopping)
return;
- get_session(session);
+ ceph_get_mds_session(session);
if (queue_work(mdsc->fsc->cap_wq,
&session->s_cap_release_work)) {
dout("cap release work queued\n");
@@ -2516,6 +2534,26 @@ static int __prepare_send_request(struct ceph_mds_client *mdsc,
}
/*
+ * called under mdsc->mutex
+ */
+static int __send_request(struct ceph_mds_client *mdsc,
+ struct ceph_mds_session *session,
+ struct ceph_mds_request *req,
+ bool drop_cap_releases)
+{
+ int err;
+
+ err = __prepare_send_request(mdsc, req, session->s_mds,
+ drop_cap_releases);
+ if (!err) {
+ ceph_msg_get(req->r_request);
+ ceph_con_send(&session->s_con, req->r_request);
+ }
+
+ return err;
+}
+
+/*
* send request, or put it on the appropriate wait list.
*/
static void __do_request(struct ceph_mds_client *mdsc,
@@ -2524,6 +2562,7 @@ static void __do_request(struct ceph_mds_client *mdsc,
struct ceph_mds_session *session = NULL;
int mds = -1;
int err = 0;
+ bool random;
if (req->r_err || test_bit(CEPH_MDS_R_GOT_RESULT, &req->r_req_flags)) {
if (test_bit(CEPH_MDS_R_ABORTED, &req->r_req_flags))
@@ -2556,15 +2595,14 @@ static void __do_request(struct ceph_mds_client *mdsc,
if (!(mdsc->fsc->mount_options->flags &
CEPH_MOUNT_OPT_MOUNTWAIT) &&
!ceph_mdsmap_is_cluster_available(mdsc->mdsmap)) {
- err = -ENOENT;
- pr_info("probably no mds server is up\n");
+ err = -EHOSTUNREACH;
goto finish;
}
}
put_request_session(req);
- mds = __choose_mds(mdsc, req);
+ mds = __choose_mds(mdsc, req, &random);
if (mds < 0 ||
ceph_mdsmap_get_state(mdsc->mdsmap, mds) < CEPH_MDS_STATE_ACTIVE) {
dout("do_request no mds or not active, waiting for map\n");
@@ -2581,7 +2619,7 @@ static void __do_request(struct ceph_mds_client *mdsc,
goto finish;
}
}
- req->r_session = get_session(session);
+ req->r_session = ceph_get_mds_session(session);
dout("do_request mds%d session %p state %s\n", mds, session,
ceph_session_state_name(session->s_state));
@@ -2592,8 +2630,12 @@ static void __do_request(struct ceph_mds_client *mdsc,
goto out_session;
}
if (session->s_state == CEPH_MDS_SESSION_NEW ||
- session->s_state == CEPH_MDS_SESSION_CLOSING)
+ session->s_state == CEPH_MDS_SESSION_CLOSING) {
__open_session(mdsc, session);
+ /* retry the same mds later */
+ if (random)
+ req->r_resend_mds = mds;
+ }
list_add(&req->r_wait, &session->s_waiting);
goto out_session;
}
@@ -2604,11 +2646,7 @@ static void __do_request(struct ceph_mds_client *mdsc,
if (req->r_request_started == 0) /* note request start time */
req->r_request_started = jiffies;
- err = __prepare_send_request(mdsc, req, mds, false);
- if (!err) {
- ceph_msg_get(req->r_request);
- ceph_con_send(&session->s_con, req->r_request);
- }
+ err = __send_request(mdsc, session, req, false);
out_session:
ceph_put_mds_session(session);
@@ -2861,7 +2899,7 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
mutex_unlock(&mdsc->mutex);
goto out;
} else {
- int mds = __choose_mds(mdsc, req);
+ int mds = __choose_mds(mdsc, req, NULL);
if (mds >= 0 && mds != req->r_session->s_mds) {
dout("but auth changed, so resending\n");
__do_request(mdsc, req);
@@ -2877,6 +2915,10 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
set_bit(CEPH_MDS_R_GOT_SAFE, &req->r_req_flags);
__unregister_request(mdsc, req);
+ /* last request during umount? */
+ if (mdsc->stopping && !__get_oldest_req(mdsc))
+ complete_all(&mdsc->safe_umount_waiters);
+
if (test_bit(CEPH_MDS_R_GOT_UNSAFE, &req->r_req_flags)) {
/*
* We already handled the unsafe response, now do the
@@ -2887,9 +2929,6 @@ static void handle_reply(struct ceph_mds_session *session, struct ceph_msg *msg)
*/
dout("got safe reply %llu, mds%d\n", tid, mds);
- /* last unsafe request during umount? */
- if (mdsc->stopping && !__get_oldest_req(mdsc))
- complete_all(&mdsc->safe_umount_waiters);
mutex_unlock(&mdsc->mutex);
goto out;
}
@@ -3104,7 +3143,7 @@ static void handle_session(struct ceph_mds_session *session,
mutex_lock(&mdsc->mutex);
if (op == CEPH_SESSION_CLOSE) {
- get_session(session);
+ ceph_get_mds_session(session);
__unregister_session(mdsc, session);
}
/* FIXME: this ttl calculation is generous */
@@ -3142,6 +3181,7 @@ static void handle_session(struct ceph_mds_session *session,
case CEPH_SESSION_CLOSE:
if (session->s_state == CEPH_MDS_SESSION_RECONNECTING)
pr_info("mds%d reconnect denied\n", session->s_mds);
+ session->s_state = CEPH_MDS_SESSION_CLOSED;
cleanup_session_requests(mdsc, session);
remove_session_caps(session);
wake = 2; /* for good measure */
@@ -3209,7 +3249,6 @@ bad:
return;
}
-
/*
* called under session->mutex.
*/
@@ -3218,18 +3257,12 @@ static void replay_unsafe_requests(struct ceph_mds_client *mdsc,
{
struct ceph_mds_request *req, *nreq;
struct rb_node *p;
- int err;
dout("replay_unsafe_requests mds%d\n", session->s_mds);
mutex_lock(&mdsc->mutex);
- list_for_each_entry_safe(req, nreq, &session->s_unsafe, r_unsafe_item) {
- err = __prepare_send_request(mdsc, req, session->s_mds, true);
- if (!err) {
- ceph_msg_get(req->r_request);
- ceph_con_send(&session->s_con, req->r_request);
- }
- }
+ list_for_each_entry_safe(req, nreq, &session->s_unsafe, r_unsafe_item)
+ __send_request(mdsc, session, req, true);
/*
* also re-send old requests when MDS enters reconnect stage. So that MDS
@@ -3244,14 +3277,8 @@ static void replay_unsafe_requests(struct ceph_mds_client *mdsc,
if (req->r_attempts == 0)
continue; /* only old requests */
if (req->r_session &&
- req->r_session->s_mds == session->s_mds) {
- err = __prepare_send_request(mdsc, req,
- session->s_mds, true);
- if (!err) {
- ceph_msg_get(req->r_request);
- ceph_con_send(&session->s_con, req->r_request);
- }
- }
+ req->r_session->s_mds == session->s_mds)
+ __send_request(mdsc, session, req, true);
}
mutex_unlock(&mdsc->mutex);
}
@@ -3762,7 +3789,7 @@ static void check_new_map(struct ceph_mds_client *mdsc,
dout("check_new_map new %u old %u\n",
newmap->m_epoch, oldmap->m_epoch);
- for (i = 0; i < oldmap->m_num_mds && i < mdsc->max_sessions; i++) {
+ for (i = 0; i < oldmap->possible_max_rank && i < mdsc->max_sessions; i++) {
if (!mdsc->sessions[i])
continue;
s = mdsc->sessions[i];
@@ -3776,9 +3803,9 @@ static void check_new_map(struct ceph_mds_client *mdsc,
ceph_mdsmap_is_laggy(newmap, i) ? " (laggy)" : "",
ceph_session_state_name(s->s_state));
- if (i >= newmap->m_num_mds) {
+ if (i >= newmap->possible_max_rank) {
/* force close session for stopped mds */
- get_session(s);
+ ceph_get_mds_session(s);
__unregister_session(mdsc, s);
__wake_requests(mdsc, &s->s_waiting);
mutex_unlock(&mdsc->mutex);
@@ -3833,7 +3860,7 @@ static void check_new_map(struct ceph_mds_client *mdsc,
}
}
- for (i = 0; i < newmap->m_num_mds && i < mdsc->max_sessions; i++) {
+ for (i = 0; i < newmap->possible_max_rank && i < mdsc->max_sessions; i++) {
s = mdsc->sessions[i];
if (!s)
continue;
@@ -4379,7 +4406,7 @@ void ceph_mdsc_close_sessions(struct ceph_mds_client *mdsc)
mutex_lock(&mdsc->mutex);
for (i = 0; i < mdsc->max_sessions; i++) {
if (mdsc->sessions[i]) {
- session = get_session(mdsc->sessions[i]);
+ session = ceph_get_mds_session(mdsc->sessions[i]);
__unregister_session(mdsc, session);
mutex_unlock(&mdsc->mutex);
mutex_lock(&session->s_mutex);
@@ -4607,11 +4634,8 @@ static struct ceph_connection *con_get(struct ceph_connection *con)
{
struct ceph_mds_session *s = con->private;
- if (get_session(s)) {
- dout("mdsc con_get %p ok (%d)\n", s, refcount_read(&s->s_ref));
+ if (ceph_get_mds_session(s))
return con;
- }
- dout("mdsc con_get %p FAIL\n", s);
return NULL;
}
@@ -4619,7 +4643,6 @@ static void con_put(struct ceph_connection *con)
{
struct ceph_mds_session *s = con->private;
- dout("mdsc con_put %p (%d)\n", s, refcount_read(&s->s_ref) - 1);
ceph_put_mds_session(s);
}
diff --git a/fs/ceph/mds_client.h b/fs/ceph/mds_client.h
index 14c7e8c49970..27a7446e10d3 100644
--- a/fs/ceph/mds_client.h
+++ b/fs/ceph/mds_client.h
@@ -17,22 +17,31 @@
#include <linux/ceph/auth.h>
/* The first 8 bits are reserved for old ceph releases */
-#define CEPHFS_FEATURE_MIMIC 8
-#define CEPHFS_FEATURE_REPLY_ENCODING 9
-#define CEPHFS_FEATURE_RECLAIM_CLIENT 10
-#define CEPHFS_FEATURE_LAZY_CAP_WANTED 11
-#define CEPHFS_FEATURE_MULTI_RECONNECT 12
+enum ceph_feature_type {
+ CEPHFS_FEATURE_MIMIC = 8,
+ CEPHFS_FEATURE_REPLY_ENCODING,
+ CEPHFS_FEATURE_RECLAIM_CLIENT,
+ CEPHFS_FEATURE_LAZY_CAP_WANTED,
+ CEPHFS_FEATURE_MULTI_RECONNECT,
+
+ CEPHFS_FEATURE_MAX = CEPHFS_FEATURE_MULTI_RECONNECT,
+};
-#define CEPHFS_FEATURES_CLIENT_SUPPORTED { \
+/*
+ * This will always have the highest feature bit value
+ * as the last element of the array.
+ */
+#define CEPHFS_FEATURES_CLIENT_SUPPORTED { \
0, 1, 2, 3, 4, 5, 6, 7, \
CEPHFS_FEATURE_MIMIC, \
CEPHFS_FEATURE_REPLY_ENCODING, \
CEPHFS_FEATURE_LAZY_CAP_WANTED, \
CEPHFS_FEATURE_MULTI_RECONNECT, \
+ \
+ CEPHFS_FEATURE_MAX, \
}
#define CEPHFS_FEATURES_CLIENT_REQUIRED {}
-
/*
* Some lock dependencies:
*
@@ -151,7 +160,8 @@ enum {
CEPH_MDS_SESSION_RESTARTING = 5,
CEPH_MDS_SESSION_RECONNECTING = 6,
CEPH_MDS_SESSION_CLOSING = 7,
- CEPH_MDS_SESSION_REJECTED = 8,
+ CEPH_MDS_SESSION_CLOSED = 8,
+ CEPH_MDS_SESSION_REJECTED = 9,
};
struct ceph_mds_session {
@@ -174,6 +184,7 @@ struct ceph_mds_session {
/* protected by s_cap_lock */
spinlock_t s_cap_lock;
+ refcount_t s_ref;
struct list_head s_caps; /* all caps issued by this session */
struct ceph_cap *s_cap_iterator;
int s_nr_caps;
@@ -188,7 +199,6 @@ struct ceph_mds_session {
unsigned long s_renew_requested; /* last time we sent a renew req */
u64 s_renew_seq;
- refcount_t s_ref;
struct list_head s_waiting; /* waiting requests */
struct list_head s_unsafe; /* unsafe requests */
};
@@ -224,6 +234,7 @@ struct ceph_mds_request {
struct rb_node r_node;
struct ceph_mds_client *r_mdsc;
+ struct kref r_kref;
int r_op; /* mds op code */
/* operation on what? */
@@ -294,7 +305,6 @@ struct ceph_mds_request {
int r_resend_mds; /* mds to resend to next, if any*/
u32 r_sent_on_mseq; /* cap mseq request was sent at*/
- struct kref r_kref;
struct list_head r_wait;
struct completion r_completion;
struct completion r_safe_completion;
@@ -451,15 +461,10 @@ extern const char *ceph_mds_op_name(int op);
extern struct ceph_mds_session *
__ceph_lookup_mds_session(struct ceph_mds_client *, int mds);
-static inline struct ceph_mds_session *
-ceph_get_mds_session(struct ceph_mds_session *s)
-{
- refcount_inc(&s->s_ref);
- return s;
-}
-
extern const char *ceph_session_state_name(int s);
+extern struct ceph_mds_session *
+ceph_get_mds_session(struct ceph_mds_session *s);
extern void ceph_put_mds_session(struct ceph_mds_session *s);
extern int ceph_send_msg_mds(struct ceph_mds_client *mdsc,
diff --git a/fs/ceph/mdsmap.c b/fs/ceph/mdsmap.c
index 471bac335fae..889627817e52 100644
--- a/fs/ceph/mdsmap.c
+++ b/fs/ceph/mdsmap.c
@@ -13,30 +13,25 @@
#include "super.h"
+#define CEPH_MDS_IS_READY(i, ignore_laggy) \
+ (m->m_info[i].state > 0 && ignore_laggy ? true : !m->m_info[i].laggy)
-/*
- * choose a random mds that is "up" (i.e. has a state > 0), or -1.
- */
-int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
+static int __mdsmap_get_random_mds(struct ceph_mdsmap *m, bool ignore_laggy)
{
int n = 0;
int i, j;
- /* special case for one mds */
- if (1 == m->m_num_mds && m->m_info[0].state > 0)
- return 0;
-
/* count */
- for (i = 0; i < m->m_num_mds; i++)
- if (m->m_info[i].state > 0)
+ for (i = 0; i < m->possible_max_rank; i++)
+ if (CEPH_MDS_IS_READY(i, ignore_laggy))
n++;
if (n == 0)
return -1;
/* pick */
n = prandom_u32() % n;
- for (j = 0, i = 0; i < m->m_num_mds; i++) {
- if (m->m_info[i].state > 0)
+ for (j = 0, i = 0; i < m->possible_max_rank; i++) {
+ if (CEPH_MDS_IS_READY(i, ignore_laggy))
j++;
if (j > n)
break;
@@ -45,6 +40,20 @@ int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
return i;
}
+/*
+ * choose a random mds that is "up" (i.e. has a state > 0), or -1.
+ */
+int ceph_mdsmap_get_random_mds(struct ceph_mdsmap *m)
+{
+ int mds;
+
+ mds = __mdsmap_get_random_mds(m, false);
+ if (mds == m->possible_max_rank || mds == -1)
+ mds = __mdsmap_get_random_mds(m, true);
+
+ return mds == m->possible_max_rank ? -1 : mds;
+}
+
#define __decode_and_drop_type(p, end, type, bad) \
do { \
if (*p + sizeof(type) > end) \
@@ -138,14 +147,29 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
m->m_session_autoclose = ceph_decode_32(p);
m->m_max_file_size = ceph_decode_64(p);
m->m_max_mds = ceph_decode_32(p);
- m->m_num_mds = m->m_max_mds;
- m->m_info = kcalloc(m->m_num_mds, sizeof(*m->m_info), GFP_NOFS);
+ /*
+ * pick out the active nodes as the m_num_active_mds, the
+ * m_num_active_mds maybe larger than m_max_mds when decreasing
+ * the max_mds in cluster side, in other case it should less
+ * than or equal to m_max_mds.
+ */
+ m->m_num_active_mds = n = ceph_decode_32(p);
+
+ /*
+ * the possible max rank, it maybe larger than the m_num_active_mds,
+ * for example if the mds_max == 2 in the cluster, when the MDS(0)
+ * was laggy and being replaced by a new MDS, we will temporarily
+ * receive a new mds map with n_num_mds == 1 and the active MDS(1),
+ * and the mds rank >= m_num_active_mds.
+ */
+ m->possible_max_rank = max(m->m_num_active_mds, m->m_max_mds);
+
+ m->m_info = kcalloc(m->possible_max_rank, sizeof(*m->m_info), GFP_NOFS);
if (!m->m_info)
goto nomem;
/* pick out active nodes from mds_info (state > 0) */
- n = ceph_decode_32(p);
for (i = 0; i < n; i++) {
u64 global_id;
u32 namelen;
@@ -215,18 +239,15 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
ceph_mds_state_name(state),
laggy ? "(laggy)" : "");
- if (mds < 0 || state <= 0)
+ if (mds < 0 || mds >= m->possible_max_rank) {
+ pr_warn("mdsmap_decode got incorrect mds(%d)\n", mds);
continue;
+ }
- if (mds >= m->m_num_mds) {
- int new_num = max(mds + 1, m->m_num_mds * 2);
- void *new_m_info = krealloc(m->m_info,
- new_num * sizeof(*m->m_info),
- GFP_NOFS | __GFP_ZERO);
- if (!new_m_info)
- goto nomem;
- m->m_info = new_m_info;
- m->m_num_mds = new_num;
+ if (state <= 0) {
+ pr_warn("mdsmap_decode got incorrect state(%s)\n",
+ ceph_mds_state_name(state));
+ continue;
}
info = &m->m_info[mds];
@@ -247,14 +268,6 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
info->export_targets = NULL;
}
}
- if (m->m_num_mds > m->m_max_mds) {
- /* find max up mds */
- for (i = m->m_num_mds; i >= m->m_max_mds; i--) {
- if (i == 0 || m->m_info[i-1].state > 0)
- break;
- }
- m->m_num_mds = i;
- }
/* pg_pools */
ceph_decode_32_safe(p, end, n, bad);
@@ -296,14 +309,14 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
for (i = 0; i < n; i++) {
s32 mds = ceph_decode_32(p);
- if (mds >= 0 && mds < m->m_num_mds) {
+ if (mds >= 0 && mds < m->possible_max_rank) {
if (m->m_info[mds].laggy)
num_laggy++;
}
}
m->m_num_laggy = num_laggy;
- if (n > m->m_num_mds) {
+ if (n > m->possible_max_rank) {
void *new_m_info = krealloc(m->m_info,
n * sizeof(*m->m_info),
GFP_NOFS | __GFP_ZERO);
@@ -311,7 +324,7 @@ struct ceph_mdsmap *ceph_mdsmap_decode(void **p, void *end)
goto nomem;
m->m_info = new_m_info;
}
- m->m_num_mds = n;
+ m->possible_max_rank = n;
}
/* inc */
@@ -382,7 +395,7 @@ void ceph_mdsmap_destroy(struct ceph_mdsmap *m)
{
int i;
- for (i = 0; i < m->m_num_mds; i++)
+ for (i = 0; i < m->possible_max_rank; i++)
kfree(m->m_info[i].export_targets);
kfree(m->m_info);
kfree(m->m_data_pg_pools);
@@ -396,9 +409,9 @@ bool ceph_mdsmap_is_cluster_available(struct ceph_mdsmap *m)
return false;
if (m->m_damaged)
return false;
- if (m->m_num_laggy > 0)
+ if (m->m_num_laggy == m->m_num_active_mds)
return false;
- for (i = 0; i < m->m_num_mds; i++) {
+ for (i = 0; i < m->possible_max_rank; i++) {
if (m->m_info[i].state == CEPH_MDS_STATE_ACTIVE)
nr_active++;
}
diff --git a/fs/ceph/super.c b/fs/ceph/super.c
index 29a795f975df..bfb8aead0555 100644
--- a/fs/ceph/super.c
+++ b/fs/ceph/super.c
@@ -107,7 +107,6 @@ static int ceph_statfs(struct dentry *dentry, struct kstatfs *buf)
return 0;
}
-
static int ceph_sync_fs(struct super_block *sb, int wait)
{
struct ceph_fs_client *fsc = ceph_sb_to_client(sb);
@@ -211,7 +210,6 @@ struct ceph_parse_opts_ctx {
/*
* Parse the source parameter. Distinguish the server list from the path.
- * Internally we do not include the leading '/' in the path.
*
* The source will look like:
* <server_spec>[,<server_spec>...]:[<path>]
@@ -232,12 +230,15 @@ static int ceph_parse_source(struct fs_parameter *param, struct fs_context *fc)
dev_name_end = strchr(dev_name, '/');
if (dev_name_end) {
- if (strlen(dev_name_end) > 1) {
- kfree(fsopt->server_path);
- fsopt->server_path = kstrdup(dev_name_end, GFP_KERNEL);
- if (!fsopt->server_path)
- return -ENOMEM;
- }
+ kfree(fsopt->server_path);
+
+ /*
+ * The server_path will include the whole chars from userland
+ * including the leading '/'.
+ */
+ fsopt->server_path = kstrdup(dev_name_end, GFP_KERNEL);
+ if (!fsopt->server_path)
+ return -ENOMEM;
} else {
dev_name_end = dev_name + strlen(dev_name);
}
@@ -461,6 +462,73 @@ static int strcmp_null(const char *s1, const char *s2)
return strcmp(s1, s2);
}
+/**
+ * path_remove_extra_slash - Remove the extra slashes in the server path
+ * @server_path: the server path and could be NULL
+ *
+ * Return NULL if the path is NULL or only consists of "/", or a string
+ * without any extra slashes including the leading slash(es) and the
+ * slash(es) at the end of the server path, such as:
+ * "//dir1////dir2///" --> "dir1/dir2"
+ */
+static char *path_remove_extra_slash(const char *server_path)
+{
+ const char *path = server_path;
+ const char *cur, *end;
+ char *buf, *p;
+ int len;
+
+ /* if the server path is omitted */
+ if (!path)
+ return NULL;
+
+ /* remove all the leading slashes */
+ while (*path == '/')
+ path++;
+
+ /* if the server path only consists of slashes */
+ if (*path == '\0')
+ return NULL;
+
+ len = strlen(path);
+
+ buf = kmalloc(len + 1, GFP_KERNEL);
+ if (!buf)
+ return ERR_PTR(-ENOMEM);
+
+ end = path + len;
+ p = buf;
+ do {
+ cur = strchr(path, '/');
+ if (!cur)
+ cur = end;
+
+ len = cur - path;
+
+ /* including one '/' */
+ if (cur != end)
+ len += 1;
+
+ memcpy(p, path, len);
+ p += len;
+
+ while (cur <= end && *cur == '/')
+ cur++;
+ path = cur;
+ } while (path < end);
+
+ *p = '\0';
+
+ /*
+ * remove the last slash if there has and just to make sure that
+ * we will get something like "dir1/dir2"
+ */
+ if (*(--p) == '/')
+ *p = '\0';
+
+ return buf;
+}
+
static int compare_mount_options(struct ceph_mount_options *new_fsopt,
struct ceph_options *new_opt,
struct ceph_fs_client *fsc)
@@ -468,6 +536,7 @@ static int compare_mount_options(struct ceph_mount_options *new_fsopt,
struct ceph_mount_options *fsopt1 = new_fsopt;
struct ceph_mount_options *fsopt2 = fsc->mount_options;
int ofs = offsetof(struct ceph_mount_options, snapdir_name);
+ char *p1, *p2;
int ret;
ret = memcmp(fsopt1, fsopt2, ofs);
@@ -480,9 +549,21 @@ static int compare_mount_options(struct ceph_mount_options *new_fsopt,
ret = strcmp_null(fsopt1->mds_namespace, fsopt2->mds_namespace);
if (ret)
return ret;
- ret = strcmp_null(fsopt1->server_path, fsopt2->server_path);
+
+ p1 = path_remove_extra_slash(fsopt1->server_path);
+ if (IS_ERR(p1))
+ return PTR_ERR(p1);
+ p2 = path_remove_extra_slash(fsopt2->server_path);
+ if (IS_ERR(p2)) {
+ kfree(p1);
+ return PTR_ERR(p2);
+ }
+ ret = strcmp_null(p1, p2);
+ kfree(p1);
+ kfree(p2);
if (ret)
return ret;
+
ret = strcmp_null(fsopt1->fscache_uniq, fsopt2->fscache_uniq);
if (ret)
return ret;
@@ -637,6 +718,7 @@ static struct ceph_fs_client *create_fs_client(struct ceph_mount_options *fsopt,
fsc->sb = NULL;
fsc->mount_state = CEPH_MOUNT_MOUNTING;
fsc->filp_gen = 1;
+ fsc->have_copy_from2 = true;
atomic_long_set(&fsc->writeback_count, 0);
@@ -788,7 +870,6 @@ static void destroy_caches(void)
ceph_fscache_unregister();
}
-
/*
* ceph_umount_begin - initiate forced umount. Tear down down the
* mount, skipping steps that may hang while waiting for server(s).
@@ -868,9 +949,6 @@ out:
return root;
}
-
-
-
/*
* mount: join the ceph cluster, and open root directory.
*/
@@ -885,7 +963,7 @@ static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc,
mutex_lock(&fsc->client->mount_mutex);
if (!fsc->sb->s_root) {
- const char *path;
+ const char *path, *p;
err = __ceph_open_session(fsc->client, started);
if (err < 0)
goto out;
@@ -897,17 +975,22 @@ static struct dentry *ceph_real_mount(struct ceph_fs_client *fsc,
goto out;
}
- if (!fsc->mount_options->server_path) {
- path = "";
- dout("mount opening path \\t\n");
- } else {
- path = fsc->mount_options->server_path + 1;
- dout("mount opening path %s\n", path);
+ p = path_remove_extra_slash(fsc->mount_options->server_path);
+ if (IS_ERR(p)) {
+ err = PTR_ERR(p);
+ goto out;
}
+ /* if the server path is omitted or just consists of '/' */
+ if (!p)
+ path = "";
+ else
+ path = p;
+ dout("mount opening path '%s'\n", path);
ceph_fs_debugfs_init(fsc);
root = open_root_dentry(fsc, path, started);
+ kfree(p);
if (IS_ERR(root)) {
err = PTR_ERR(root);
goto out;
@@ -1070,6 +1153,11 @@ static int ceph_get_tree(struct fs_context *fc)
return 0;
out_splat:
+ if (!ceph_mdsmap_is_cluster_available(fsc->mdsc->mdsmap)) {
+ pr_info("No mds server is up or the cluster is laggy\n");
+ err = -EHOSTUNREACH;
+ }
+
ceph_mdsc_close_sessions(fsc->mdsc);
deactivate_locked_super(sb);
goto out_final;
diff --git a/fs/ceph/super.h b/fs/ceph/super.h
index 3bf1a01cd536..1e456a9011bb 100644
--- a/fs/ceph/super.h
+++ b/fs/ceph/super.h
@@ -106,6 +106,8 @@ struct ceph_fs_client {
unsigned long last_auto_reconnect;
bool blacklisted;
+ bool have_copy_from2;
+
u32 filp_gen;
loff_t max_file_size;
diff --git a/fs/ceph/util.c b/fs/ceph/util.c
new file mode 100644
index 000000000000..2c34875675bf
--- /dev/null
+++ b/fs/ceph/util.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Some non-inline ceph helpers
+ */
+#include <linux/module.h>
+#include <linux/ceph/types.h>
+
+/*
+ * return true if @layout appears to be valid
+ */
+int ceph_file_layout_is_valid(const struct ceph_file_layout *layout)
+{
+ __u32 su = layout->stripe_unit;
+ __u32 sc = layout->stripe_count;
+ __u32 os = layout->object_size;
+
+ /* stripe unit, object size must be non-zero, 64k increment */
+ if (!su || (su & (CEPH_MIN_STRIPE_UNIT-1)))
+ return 0;
+ if (!os || (os & (CEPH_MIN_STRIPE_UNIT-1)))
+ return 0;
+ /* object size must be a multiple of stripe unit */
+ if (os < su || os % su)
+ return 0;
+ /* stripe count must be non-zero */
+ if (!sc)
+ return 0;
+ return 1;
+}
+
+void ceph_file_layout_from_legacy(struct ceph_file_layout *fl,
+ struct ceph_file_layout_legacy *legacy)
+{
+ fl->stripe_unit = le32_to_cpu(legacy->fl_stripe_unit);
+ fl->stripe_count = le32_to_cpu(legacy->fl_stripe_count);
+ fl->object_size = le32_to_cpu(legacy->fl_object_size);
+ fl->pool_id = le32_to_cpu(legacy->fl_pg_pool);
+ if (fl->pool_id == 0 && fl->stripe_unit == 0 &&
+ fl->stripe_count == 0 && fl->object_size == 0)
+ fl->pool_id = -1;
+}
+
+void ceph_file_layout_to_legacy(struct ceph_file_layout *fl,
+ struct ceph_file_layout_legacy *legacy)
+{
+ legacy->fl_stripe_unit = cpu_to_le32(fl->stripe_unit);
+ legacy->fl_stripe_count = cpu_to_le32(fl->stripe_count);
+ legacy->fl_object_size = cpu_to_le32(fl->object_size);
+ if (fl->pool_id >= 0)
+ legacy->fl_pg_pool = cpu_to_le32(fl->pool_id);
+ else
+ legacy->fl_pg_pool = 0;
+}
+
+int ceph_flags_to_mode(int flags)
+{
+ int mode;
+
+#ifdef O_DIRECTORY /* fixme */
+ if ((flags & O_DIRECTORY) == O_DIRECTORY)
+ return CEPH_FILE_MODE_PIN;
+#endif
+
+ switch (flags & O_ACCMODE) {
+ case O_WRONLY:
+ mode = CEPH_FILE_MODE_WR;
+ break;
+ case O_RDONLY:
+ mode = CEPH_FILE_MODE_RD;
+ break;
+ case O_RDWR:
+ case O_ACCMODE: /* this is what the VFS does */
+ mode = CEPH_FILE_MODE_RDWR;
+ break;
+ }
+#ifdef O_LAZY
+ if (flags & O_LAZY)
+ mode |= CEPH_FILE_MODE_LAZY;
+#endif
+
+ return mode;
+}
+
+int ceph_caps_for_mode(int mode)
+{
+ int caps = CEPH_CAP_PIN;
+
+ if (mode & CEPH_FILE_MODE_RD)
+ caps |= CEPH_CAP_FILE_SHARED |
+ CEPH_CAP_FILE_RD | CEPH_CAP_FILE_CACHE;
+ if (mode & CEPH_FILE_MODE_WR)
+ caps |= CEPH_CAP_FILE_EXCL |
+ CEPH_CAP_FILE_WR | CEPH_CAP_FILE_BUFFER |
+ CEPH_CAP_AUTH_SHARED | CEPH_CAP_AUTH_EXCL |
+ CEPH_CAP_XATTR_SHARED | CEPH_CAP_XATTR_EXCL;
+ if (mode & CEPH_FILE_MODE_LAZY)
+ caps |= CEPH_CAP_FILE_LAZYIO;
+
+ return caps;
+}
diff --git a/fs/ceph/xattr.c b/fs/ceph/xattr.c
index cb18ee637cb7..7b8a070a782d 100644
--- a/fs/ceph/xattr.c
+++ b/fs/ceph/xattr.c
@@ -655,7 +655,7 @@ static int __build_xattrs(struct inode *inode)
u32 len;
const char *name, *val;
struct ceph_inode_info *ci = ceph_inode(inode);
- int xattr_version;
+ u64 xattr_version;
struct ceph_inode_xattr **xattrs = NULL;
int err = 0;
int i;
@@ -851,7 +851,7 @@ ssize_t __ceph_getxattr(struct inode *inode, const char *name, void *value,
req_mask = __get_request_mask(inode);
spin_lock(&ci->i_ceph_lock);
- dout("getxattr %p ver=%lld index_ver=%lld\n", inode,
+ dout("getxattr %p name '%s' ver=%lld index_ver=%lld\n", inode, name,
ci->i_xattrs.version, ci->i_xattrs.index_version);
if (ci->i_xattrs.version == 0 ||
@@ -1078,7 +1078,8 @@ retry:
}
}
- dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued));
+ dout("setxattr %p name '%s' issued %s\n", inode, name,
+ ceph_cap_string(issued));
__build_xattrs(inode);
required_blob_size = __get_required_blob_size(ci, name_len, val_len);
generated by cgit v1.2.3-58-ga151 (git 2.39.0) at 2024-12-23 10:02:11 +0000