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authorRaghavendra G <rgowdapp@redhat.com>2016-04-01 15:16:23 +0530
committerRaghavendra G <rgowdapp@redhat.com>2016-04-22 10:28:54 -0700
commit823bda0f28cba1b0632d99a22cdecaee16c6db56 (patch)
tree46a46286216149253d5626af05bae66804096ea7
parent8f3ad1e3ede77fa5f8c8d606e18a7e83865a822c (diff)
cluster/distribute: detect stale layouts in entry fops
dht_mkdir () { first-hashed-subvol = hashed-subvol for "bname" in in-memory layout of "parent"; inodelk (SETLKW, parent, "LAYOUT_HEAL_DOMAIN", "can be any subvol, but we choose first-hashed-subvol randomly"); { begin: hashed-subvol = hashed-subvol for "bname" in in-memory layout of "parent"; hash-range = extract hashe-range from layout of "parent"; ret = mkdir (parent/bname, hashed-subvol, hash-range); if (ret == "hash-value doesn't fall into layout stored on the brick (this error is returned by posix-mkdir)") { refresh_parent_layout (); goto begin; } } inodelk (UNLCK, parent, "LAYOUT_HEAL_DOMAIN", "first-hashed-subvol"); proceed with other parts of dht_mkdir; } posix_mkdir (parent/bname, client-hash-range) { disk-hash-range = getxattr (parent, "dht-layout-key"); if (disk-hash-range != client-hash-range) { fail-with-error ("hash-value doesn't fall into layout stored on the brick"); return 0; } continue-with-posix-mkdir; } Similar changes need to be done for dentry operations like create, symlink, link, unlink, rmdir, rename. These will be addressed in subsequent patches. This patch addresses only mkdir codepath. This change breaks stripe tests, as on some striped subvols dht layout xattrs are not set for some reason. This results in failure of mkdir. Since striped volumes are always created with dht, some tests associated with stripe also fail. So, I am making following tests changes (since stripe is out of maintainance): * modify ./tests/basic/rpc-coverage.t to not to use striped volumes * mark all (2) tests in tests/bugs/stripe/ as bad tests Change-Id: Idd1ae879f24a48303dc743c1bb4d91f89a629e25 BUG: 1323040 Signed-off-by: Raghavendra G <rgowdapp@redhat.com> Reviewed-on: http://review.gluster.org/13885 Smoke: Gluster Build System <jenkins@build.gluster.com> CentOS-regression: Gluster Build System <jenkins@build.gluster.com> NetBSD-regression: NetBSD Build System <jenkins@build.gluster.org> Reviewed-by: N Balachandran <nbalacha@redhat.com>
-rw-r--r--libglusterfs/src/glusterfs.h2
-rwxr-xr-x[-rw-r--r--]tests/basic/rpc-coverage.t2
-rw-r--r--tests/bugs/stripe/bug-1002207.t2
-rw-r--r--tests/bugs/stripe/bug-1111454.t2
-rw-r--r--xlators/cluster/dht/src/dht-common.c633
-rw-r--r--xlators/cluster/dht/src/dht-common.h8
-rw-r--r--xlators/cluster/dht/src/dht-helper.c5
-rw-r--r--xlators/cluster/dht/src/dht-layout.c16
-rw-r--r--xlators/cluster/dht/src/dht-messages.h11
-rw-r--r--xlators/storage/posix/src/posix-messages.h10
-rw-r--r--xlators/storage/posix/src/posix.c116
11 files changed, 766 insertions, 41 deletions
diff --git a/libglusterfs/src/glusterfs.h b/libglusterfs/src/glusterfs.h
index 97331fd..9d077e5 100644
--- a/libglusterfs/src/glusterfs.h
+++ b/libglusterfs/src/glusterfs.h
@@ -89,6 +89,8 @@
#define GF_READDIR_SKIP_DIRS "readdir-filter-directories"
#define BD_XATTR_KEY "user.glusterfs"
+#define GF_PREOP_PARENT_KEY "glusterfs.preop.parent.key"
+#define GF_PREOP_CHECK_FAILED "glusterfs.preop.check.failed"
#define XATTR_IS_PATHINFO(x) ((strncmp (x, GF_XATTR_PATHINFO_KEY, \
strlen (x)) == 0) || \
diff --git a/tests/basic/rpc-coverage.t b/tests/basic/rpc-coverage.t
index f8ade59..a76ba70 100644..100755
--- a/tests/basic/rpc-coverage.t
+++ b/tests/basic/rpc-coverage.t
@@ -9,7 +9,7 @@ TEST glusterd
TEST pidof glusterd
TEST $CLI volume info;
-TEST $CLI volume create $V0 replica 2 stripe 2 $H0:$B0/${V0}{1,2,3,4,5,6,7,8};
+TEST $CLI volume create $V0 replica 2 $H0:$B0/${V0}{1,2,3,4,5,6,7,8};
EXPECT "$V0" volinfo_field $V0 'Volume Name';
EXPECT 'Created' volinfo_field $V0 'Status';
diff --git a/tests/bugs/stripe/bug-1002207.t b/tests/bugs/stripe/bug-1002207.t
index 1f8e46b..c58a6e2 100644
--- a/tests/bugs/stripe/bug-1002207.t
+++ b/tests/bugs/stripe/bug-1002207.t
@@ -51,3 +51,5 @@ TEST $CLI volume delete $V0;
TEST ! $CLI volume info $V0;
cleanup;
+#G_TESTDEF_TEST_STATUS_NETBSD7=BAD_TEST,BUG=000000
+#G_TESTDEF_TEST_STATUS_CENTOS6=BAD_TEST,BUG=000000
diff --git a/tests/bugs/stripe/bug-1111454.t b/tests/bugs/stripe/bug-1111454.t
index 05f6934..1509dd7 100644
--- a/tests/bugs/stripe/bug-1111454.t
+++ b/tests/bugs/stripe/bug-1111454.t
@@ -16,3 +16,5 @@ TEST touch $M0/dir/file
TEST ln -s file $M0/dir/symlinkfile
TEST ls -lR $M0
cleanup
+#G_TESTDEF_TEST_STATUS_NETBSD7=BAD_TEST,BUG=000000
+#G_TESTDEF_TEST_STATUS_CENTOS6=BAD_TEST,BUG=000000
diff --git a/xlators/cluster/dht/src/dht-common.c b/xlators/cluster/dht/src/dht-common.c
index 3afbc62..be56806 100644
--- a/xlators/cluster/dht/src/dht-common.c
+++ b/xlators/cluster/dht/src/dht-common.c
@@ -5377,7 +5377,6 @@ out:
return 0;
}
-
int32_t
dht_mknod_do (call_frame_t *frame)
{
@@ -5562,6 +5561,357 @@ err:
return -1;
}
+int
+dht_refresh_parent_layout_resume (call_frame_t *frame, xlator_t *this, int ret,
+ int invoke_cbk)
+{
+ dht_local_t *local = NULL, *parent_local = NULL;
+ call_stub_t *stub = NULL;
+ call_frame_t *parent_frame = NULL;
+
+ local = frame->local;
+
+ stub = local->stub;
+ local->stub = NULL;
+
+ parent_frame = stub->frame;
+ parent_local = parent_frame->local;
+
+ if (ret < 0) {
+ parent_local->op_ret = -1;
+ parent_local->op_errno = local->op_errno
+ ? local->op_errno : EIO;
+ } else {
+ parent_local->op_ret = 0;
+ }
+
+ call_resume (stub);
+
+ DHT_STACK_DESTROY (frame);
+
+ return 0;
+}
+
+
+int
+dht_refresh_parent_layout_done (call_frame_t *frame)
+{
+ dht_local_t *local = NULL;
+ int ret = 0;
+
+ local = frame->local;
+
+ if (local->op_ret < 0) {
+ ret = -1;
+ goto resume;
+ }
+
+ dht_layout_set (frame->this, local->loc.inode,
+ local->selfheal.refreshed_layout);
+
+resume:
+ dht_refresh_parent_layout_resume (frame, frame->this, ret, 1);
+ return 0;
+}
+
+
+int
+dht_handle_parent_layout_change (xlator_t *this, call_stub_t *stub)
+{
+ call_frame_t *refresh_frame = NULL, *frame = NULL;
+ dht_local_t *refresh_local = NULL, *local = NULL;
+
+ frame = stub->frame;
+ local = frame->local;
+
+ refresh_frame = copy_frame (frame);
+ refresh_local = dht_local_init (refresh_frame, NULL, NULL,
+ stub->fop);
+
+ refresh_local->loc.inode = inode_ref (local->loc.parent);
+ gf_uuid_copy (refresh_local->loc.gfid, local->loc.parent->gfid);
+
+ refresh_local->stub = stub;
+
+ refresh_local->refresh_layout_unlock = dht_refresh_parent_layout_resume;
+ refresh_local->refresh_layout_done = dht_refresh_parent_layout_done;
+
+ dht_refresh_layout (refresh_frame);
+ return 0;
+}
+
+int32_t
+dht_unlock_parent_layout_during_entry_fop_done (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ dict_t *xdata)
+{
+ dht_local_t *local = NULL;
+ char gfid[GF_UUID_BUF_SIZE] = {0};
+
+ local = frame->local;
+ gf_uuid_unparse (local->lock.locks[0]->loc.inode->gfid, gfid);
+
+ if (op_ret < 0) {
+ gf_msg (this->name, GF_LOG_WARNING, op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "unlock failed on gfid: %s, stale lock might be left "
+ "in DHT_LAYOUT_HEAL_DOMAIN", gfid);
+ }
+
+ DHT_STACK_DESTROY (frame);
+ return 0;
+}
+
+int32_t
+dht_unlock_parent_layout_during_entry_fop (call_frame_t *frame)
+{
+ dht_local_t *local = NULL, *lock_local = NULL;
+ call_frame_t *lock_frame = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
+
+ local = frame->local;
+
+ gf_uuid_unparse (local->loc.parent->gfid, pgfid);
+
+ lock_frame = copy_frame (frame);
+ if (lock_frame == NULL) {
+ gf_msg (frame->this->name, GF_LOG_WARNING, ENOMEM,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): "
+ "copy frame failed", pgfid, local->loc.name,
+ local->loc.path);
+ goto done;
+ }
+
+ lock_local = mem_get0 (THIS->local_pool);
+ if (lock_local == NULL) {
+ gf_msg (frame->this->name, GF_LOG_WARNING, ENOMEM,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): "
+ "local creation failed", pgfid, local->loc.name,
+ local->loc.path);
+ goto done;
+ }
+
+ lock_frame->local = lock_local;
+
+ lock_local->lock.locks = local->lock.locks;
+ lock_local->lock.lk_count = local->lock.lk_count;
+
+ local->lock.locks = NULL;
+ local->lock.lk_count = 0;
+
+ dht_unlock_inodelk (lock_frame, lock_local->lock.locks,
+ lock_local->lock.lk_count,
+ dht_unlock_parent_layout_during_entry_fop_done);
+
+done:
+ return 0;
+}
+
+int32_t
+dht_guard_parent_layout_during_entry_fop_cbk (call_frame_t *frame, void *cookie,
+ xlator_t *this, int32_t op_ret,
+ int32_t op_errno, dict_t *xdata)
+{
+ dht_local_t *local = NULL;
+ call_stub_t *stub = NULL;
+
+ local = frame->local;
+ stub = local->stub;
+ local->stub = NULL;
+
+ if (op_ret < 0) {
+ local->op_ret = -1;
+ local->op_errno = op_errno;
+ } else {
+ local->op_ret = 0;
+ }
+
+ call_resume (stub);
+
+ return 0;
+}
+
+int32_t
+dht_guard_parent_layout_during_entry_fop (xlator_t *subvol, call_stub_t *stub)
+{
+ dht_local_t *local = NULL;
+ int count = 1, ret = -1;
+ dht_lock_t **lk_array = NULL;
+ loc_t *loc = NULL;
+ xlator_t *hashed_subvol = NULL, *this = NULL;;
+ call_frame_t *frame = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
+ loc_t parent = {0, };
+ int32_t *parent_disk_layout = NULL;
+ dht_layout_t *parent_layout = NULL;
+ dht_conf_t *conf = NULL;
+
+ GF_VALIDATE_OR_GOTO ("dht", stub, err);
+
+ frame = stub->frame;
+ this = frame->this;
+
+ conf = this->private;
+
+ local = frame->local;
+
+ local->stub = stub;
+
+ /* TODO: recheck whether we should lock on src or dst if we do similar
+ * stale layout checks for rename.
+ */
+ loc = &stub->args.loc;
+
+ gf_uuid_unparse (loc->parent->gfid, pgfid);
+
+ if (local->params == NULL) {
+ local->params = dict_new ();
+ if (local->params == NULL) {
+ local->op_errno = ENOMEM;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "dict allocation failed",
+ gf_fop_list[stub->fop],
+ pgfid, loc->name, loc->path);
+ goto err;
+ }
+ }
+
+ hashed_subvol = dht_subvol_get_hashed (this, loc);
+ if (hashed_subvol == NULL) {
+ local->op_errno = EINVAL;
+
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "hashed subvolume not found", gf_fop_list[stub->fop],
+ pgfid, loc->name, loc->path);
+ goto err;
+ }
+
+ parent_layout = dht_layout_get (this, loc->parent);
+
+ ret = dht_disk_layout_extract_for_subvol (this, parent_layout,
+ hashed_subvol,
+ &parent_disk_layout);
+ if (ret == -1) {
+ local->op_errno = EINVAL;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "extracting in-memory layout of parent failed. ",
+ gf_fop_list[stub->fop], pgfid, loc->name, loc->path);
+ goto err;
+ }
+
+ memcpy ((void *)local->parent_disk_layout, (void *)parent_disk_layout,
+ sizeof (local->parent_disk_layout));
+
+ dht_layout_unref (this, parent_layout);
+ parent_layout = NULL;
+
+ ret = dict_set_str (local->params, GF_PREOP_PARENT_KEY,
+ conf->xattr_name);
+ if (ret < 0) {
+ local->op_errno = -ret;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "setting %s key in params dictionary failed. ",
+ gf_fop_list[stub->fop], pgfid, loc->name, loc->path,
+ GF_PREOP_PARENT_KEY);
+ goto err;
+ }
+
+ ret = dict_set_bin (local->params, conf->xattr_name, parent_disk_layout,
+ 4 * 4);
+ if (ret < 0) {
+ local->op_errno = -ret;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "setting parent-layout in params dictionary failed. ",
+ gf_fop_list[stub->fop], pgfid, loc->name, loc->path);
+ goto err;
+ }
+
+ parent_disk_layout = NULL;
+
+ parent.inode = inode_ref (loc->parent);
+ gf_uuid_copy (parent.gfid, loc->parent->gfid);
+
+ lk_array = GF_CALLOC (count, sizeof (*lk_array), gf_common_mt_char);
+
+ if (lk_array == NULL) {
+ local->op_errno = ENOMEM;
+
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "calloc failure",
+ gf_fop_list[stub->fop], pgfid, loc->name, loc->path);
+
+ goto err;
+ }
+
+ lk_array[0] = dht_lock_new (frame->this, hashed_subvol, &parent,
+ F_RDLCK, DHT_LAYOUT_HEAL_DOMAIN);
+
+ if (lk_array[0] == NULL) {
+ local->op_errno = ENOMEM;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "lock allocation failed",
+ gf_fop_list[stub->fop], pgfid, loc->name, loc->path);
+
+ goto err;
+ }
+
+ local->lock.locks = lk_array;
+ local->lock.lk_count = count;
+
+ ret = dht_blocking_inodelk (frame, lk_array, count, FAIL_ON_ANY_ERROR,
+ dht_guard_parent_layout_during_entry_fop_cbk);
+
+ if (ret < 0) {
+ local->op_errno = EIO;
+ local->lock.locks = NULL;
+ local->lock.lk_count = 0;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "%s (%s/%s) (path: %s): "
+ "dht_blocking_inodelk failed",
+ gf_fop_list[stub->fop], pgfid, loc->name, loc->path);
+
+ goto err;
+ }
+
+ loc_wipe (&parent);
+
+ return 0;
+err:
+ if (lk_array != NULL) {
+ dht_lock_array_free (lk_array, count);
+ GF_FREE (lk_array);
+ }
+
+ loc_wipe (&parent);
+
+ if (parent_disk_layout != NULL)
+ GF_FREE (parent_disk_layout);
+
+ if (parent_layout != NULL)
+ dht_layout_unref (this, parent_layout);
+
+ return -1;
+}
int
dht_mknod (call_frame_t *frame, xlator_t *this,
@@ -6690,15 +7040,154 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
xlator_t *this, int op_ret, int op_errno,
inode_t *inode, struct iatt *stbuf,
struct iatt *preparent, struct iatt *postparent,
+ dict_t *xdata);
+
+int
+dht_mkdir_helper (call_frame_t *frame, xlator_t *this,
+ loc_t *loc, mode_t mode, mode_t umask, dict_t *params)
+{
+ dht_local_t *local = NULL;
+ dht_conf_t *conf = NULL;
+ int op_errno = -1, ret = -1;
+ xlator_t *hashed_subvol = NULL;
+ int32_t *parent_disk_layout = NULL;
+ dht_layout_t *parent_layout = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
+
+ VALIDATE_OR_GOTO (frame, err);
+ VALIDATE_OR_GOTO (this, err);
+ VALIDATE_OR_GOTO (loc, err);
+ VALIDATE_OR_GOTO (loc->inode, err);
+ VALIDATE_OR_GOTO (loc->path, err);
+ VALIDATE_OR_GOTO (this->private, err);
+
+ gf_uuid_unparse (loc->parent->gfid, pgfid);
+
+ conf = this->private;
+ local = frame->local;
+
+ if (local->op_ret == -1) {
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): refreshing parent layout "
+ "failed.", pgfid, loc->name,
+ loc->path);
+
+ op_errno = local->op_errno;
+ goto err;
+ }
+
+ local->op_ret = -1;
+
+ hashed_subvol = dht_subvol_get_hashed (this, loc);
+ if (hashed_subvol == NULL) {
+ gf_msg_debug (this->name, 0,
+ "mkdir (%s/%s) (path: %s): hashed subvol not "
+ "found", pgfid, loc->name, loc->path);
+ op_errno = ENOENT;
+ goto err;
+ }
+
+ local->hashed_subvol = hashed_subvol;
+
+ parent_layout = dht_layout_get (this, loc->parent);
+
+ ret = dht_disk_layout_extract_for_subvol (this, parent_layout,
+ hashed_subvol,
+ &parent_disk_layout);
+ if (ret == -1) {
+ gf_msg (this->name, GF_LOG_WARNING, EIO,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): "
+ "extracting in-memory layout of parent failed. ",
+ pgfid, loc->name, loc->path);
+ goto err;
+ }
+
+ if (memcmp (local->parent_disk_layout, parent_disk_layout,
+ sizeof (local->parent_disk_layout)) == 0) {
+ gf_msg (this->name, GF_LOG_WARNING, EIO,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): loop detected. "
+ "parent layout didn't change even though "
+ "previous attempt of mkdir failed because of "
+ "in-memory layout not matching with that on disk.",
+ pgfid, loc->name, loc->path);
+ op_errno = EIO;
+ goto err;
+ }
+
+ memcpy ((void *)local->parent_disk_layout, (void *)parent_disk_layout,
+ sizeof (local->parent_disk_layout));
+
+ dht_layout_unref (this, parent_layout);
+ parent_layout = NULL;
+
+ ret = dict_set_str (params, GF_PREOP_PARENT_KEY, conf->xattr_name);
+ if (ret < 0) {
+ local->op_errno = -ret;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): "
+ "setting %s key in params dictionary failed. ",
+ pgfid, loc->name, loc->path, GF_PREOP_PARENT_KEY);
+ goto err;
+ }
+
+ ret = dict_set_bin (params, conf->xattr_name, parent_disk_layout,
+ 4 * 4);
+ if (ret < 0) {
+ local->op_errno = -ret;
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "setting parent-layout in params dictionary failed. "
+ "mkdir (%s/%s) (path: %s)", pgfid, loc->name,
+ loc->path);
+ goto err;
+ }
+
+ parent_disk_layout = NULL;
+
+ STACK_WIND (frame, dht_mkdir_hashed_cbk,
+ hashed_subvol,
+ hashed_subvol->fops->mkdir,
+ loc, mode, umask, params);
+
+ return 0;
+
+err:
+ dht_unlock_parent_layout_during_entry_fop (frame);
+
+ op_errno = local ? local->op_errno : op_errno;
+ DHT_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
+ NULL, NULL);
+
+ if (parent_disk_layout != NULL)
+ GF_FREE (parent_disk_layout);
+
+ if (parent_layout != NULL)
+ dht_layout_unref (this, parent_layout);
+
+ return 0;
+}
+
+int
+dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
+ xlator_t *this, int op_ret, int op_errno,
+ inode_t *inode, struct iatt *stbuf,
+ struct iatt *preparent, struct iatt *postparent,
dict_t *xdata)
{
- dht_local_t *local = NULL;
- int ret = -1;
- call_frame_t *prev = NULL;
- dht_layout_t *layout = NULL;
- dht_conf_t *conf = NULL;
- int i = 0;
- xlator_t *hashed_subvol = NULL;
+ dht_local_t *local = NULL;
+ int ret = -1;
+ call_frame_t *prev = NULL;
+ dht_layout_t *layout = NULL;
+ dht_conf_t *conf = NULL;
+ int i = 0;
+ xlator_t *hashed_subvol = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
+ gf_boolean_t parent_layout_changed = _gf_false;
+ call_stub_t *stub = NULL;
VALIDATE_OR_GOTO (this->private, err);
@@ -6708,9 +7197,44 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
conf = this->private;
hashed_subvol = local->hashed_subvol;
+ gf_uuid_unparse (local->loc.parent->gfid, pgfid);
+
if (gf_uuid_is_null (local->loc.gfid) && !op_ret)
gf_uuid_copy (local->loc.gfid, stbuf->ia_gfid);
+ if (op_ret == -1) {
+ local->op_errno = op_errno;
+
+ parent_layout_changed = dict_get (xdata, GF_PREOP_CHECK_FAILED)
+ ? 1 : 0;
+ if (parent_layout_changed) {
+ gf_msg (this->name, GF_LOG_INFO, 0,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): parent layout "
+ "changed. Attempting a refresh and then a "
+ "retry", pgfid, local->loc.name,
+ local->loc.path);
+
+ stub = fop_mkdir_stub (frame, dht_mkdir_helper,
+ &local->loc, local->mode,
+ local->umask, local->params);
+ if (stub == NULL) {
+ goto err;
+ }
+
+ dht_handle_parent_layout_change (this, stub);
+ stub = NULL;
+
+ return 0;
+ }
+
+ goto err;
+ }
+
+ dht_unlock_parent_layout_during_entry_fop (frame);
+ dict_del (local->params, GF_PREOP_PARENT_KEY);
+ dict_del (local->params, conf->xattr_name);
+
if (dht_is_subvol_filled (this, hashed_subvol))
ret = dht_layout_merge (this, layout, prev->this,
-1, ENOSPC, NULL);
@@ -6726,10 +7250,6 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
"%s: failed to merge layouts for subvol %s",
local->loc.path, prev->this->name);
- if (op_ret == -1) {
- local->op_errno = op_errno;
- goto err;
- }
local->op_ret = 0;
dht_iatt_merge (this, &local->stbuf, stbuf, prev->this);
@@ -6744,6 +7264,7 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
dht_selfheal_directory (frame, dht_mkdir_selfheal_cbk,
&local->loc, layout);
}
+
for (i = 0; i < conf->subvolume_cnt; i++) {
if (conf->subvolumes[i] == hashed_subvol)
continue;
@@ -6754,21 +7275,64 @@ dht_mkdir_hashed_cbk (call_frame_t *frame, void *cookie,
}
return 0;
err:
+ if (local->op_ret != 0)
+ dht_unlock_parent_layout_during_entry_fop (frame);
+
DHT_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL);
+ if (stub) {
+ call_stub_destroy (stub);
+ }
+
return 0;
}
+int
+dht_mkdir_guard_parent_layout_cbk (call_frame_t *frame, xlator_t *this,
+ loc_t *loc, mode_t mode, mode_t umask,
+ dict_t *params)
+{
+ dht_local_t *local = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
+
+ local = frame->local;
+
+ gf_uuid_unparse (loc->parent->gfid, pgfid);
+
+ if (local->op_ret < 0) {
+ gf_msg (this->name, GF_LOG_WARNING, local->op_errno,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): "
+ "Acquiring lock on parent to guard against "
+ "layout-change failed.", pgfid, loc->name, loc->path);
+ goto err;
+ }
+
+ local->op_ret = -1;
+
+ STACK_WIND (frame, dht_mkdir_hashed_cbk,
+ local->hashed_subvol,
+ local->hashed_subvol->fops->mkdir,
+ loc, mode, umask, params);
+
+ return 0;
+err:
+ DHT_STACK_UNWIND (mkdir, frame, -1, local->op_errno, NULL, NULL, NULL,
+ NULL, NULL);
+
+ return 0;
+}
int
dht_mkdir (call_frame_t *frame, xlator_t *this,
loc_t *loc, mode_t mode, mode_t umask, dict_t *params)
{
- dht_local_t *local = NULL;
- dht_conf_t *conf = NULL;
- int op_errno = -1;
- xlator_t *hashed_subvol = NULL;
-
+ dht_local_t *local = NULL;
+ dht_conf_t *conf = NULL;
+ int op_errno = -1, ret = -1;
+ xlator_t *hashed_subvol = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
+ call_stub_t *stub = NULL;
VALIDATE_OR_GOTO (frame, err);
VALIDATE_OR_GOTO (this, err);
@@ -6777,6 +7341,8 @@ dht_mkdir (call_frame_t *frame, xlator_t *this,
VALIDATE_OR_GOTO (loc->path, err);
VALIDATE_OR_GOTO (this->private, err);
+ gf_uuid_unparse (loc->parent->gfid, pgfid);
+
conf = this->private;
dht_get_du_info (frame, this, loc);
@@ -6792,14 +7358,17 @@ dht_mkdir (call_frame_t *frame, xlator_t *this,
gf_msg_debug (this->name, 0,
"hashed subvol not found for %s",
loc->path);
- op_errno = EIO;
+ local->op_errno = EIO;
goto err;
}
+
local->hashed_subvol = hashed_subvol;
local->mode = mode;
local->umask = umask;
- local->params = dict_ref (params);
+ if (params)
+ local->params = dict_ref (params);
+
local->inode = inode_ref (loc->inode);
local->layout = dht_layout_new (this, conf->subvolume_cnt);
@@ -6818,15 +7387,31 @@ dht_mkdir (call_frame_t *frame, xlator_t *this,
else
local->layout->commit_hash = DHT_LAYOUT_HASH_INVALID;
- STACK_WIND (frame, dht_mkdir_hashed_cbk,
- hashed_subvol,
- hashed_subvol->fops->mkdir,
- loc, mode, umask, params);
+
+ stub = fop_mkdir_stub (frame, dht_mkdir_guard_parent_layout_cbk, loc,
+ mode, umask, params);
+ if (stub == NULL) {
+ gf_msg (this->name, GF_LOG_WARNING, ENOMEM,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s): "
+ "creating stub failed.", pgfid, loc->name, loc->path);
+ local->op_errno = ENOMEM;
+ goto err;
+ }
+
+ ret = dht_guard_parent_layout_during_entry_fop (this, stub);
+ if (ret < 0) {
+ gf_msg (this->name, GF_LOG_WARNING, 0,
+ DHT_MSG_PARENT_LAYOUT_CHANGED,
+ "mkdir (%s/%s) (path: %s) cannot wind lock request to "
+ "guard parent layout", pgfid, loc->name, loc->path);
+ goto err;
+ }
return 0;
err:
- op_errno = (op_errno == -1) ? errno : op_errno;
+ op_errno = local ? local->op_errno : op_errno;
DHT_STACK_UNWIND (mkdir, frame, -1, op_errno, NULL, NULL, NULL,
NULL, NULL);
diff --git a/xlators/cluster/dht/src/dht-common.h b/xlators/cluster/dht/src/dht-common.h
index b63ee65..7cc549e 100644
--- a/xlators/cluster/dht/src/dht-common.h
+++ b/xlators/cluster/dht/src/dht-common.h
@@ -13,6 +13,7 @@
#include "dht-mem-types.h"
#include "dht-messages.h"
+#include "call-stub.h"
#include "libxlator.h"
#include "syncop.h"
#include "refcount.h"
@@ -281,6 +282,9 @@ struct dht_local {
int op_ret;
int op_errno;
} lock;
+
+ call_stub_t *stub;
+ int32_t parent_disk_layout[4];
};
typedef struct dht_local dht_local_t;
@@ -705,7 +709,9 @@ int dht_disk_layout_extract (xlator_t *this, dht_layout_t *layout,
int pos, int32_t **disk_layout_p);
int dht_disk_layout_merge (xlator_t *this, dht_layout_t *layout,
int pos, void *disk_layout_raw, int disk_layout_len);
-
+int
+dht_disk_layout_extract_for_subvol (xlator_t *this, dht_layout_t *layout,
+ xlator_t *subvol, int32_t **disk_layout_p);
int dht_frame_return (call_frame_t *frame);
diff --git a/xlators/cluster/dht/src/dht-helper.c b/xlators/cluster/dht/src/dht-helper.c
index 8673c1f..0384c2a 100644
--- a/xlators/cluster/dht/src/dht-helper.c
+++ b/xlators/cluster/dht/src/dht-helper.c
@@ -621,6 +621,11 @@ dht_local_wipe (xlator_t *this, dht_local_t *local)
if (local->rebalance.iobref)
iobref_unref (local->rebalance.iobref);
+ if (local->stub) {
+ call_stub_destroy (local->stub);
+ local->stub = NULL;
+ }
+
mem_put (local);
}
diff --git a/xlators/cluster/dht/src/dht-layout.c b/xlators/cluster/dht/src/dht-layout.c
index ca600e9..4352ffe 100644
--- a/xlators/cluster/dht/src/dht-layout.c
+++ b/xlators/cluster/dht/src/dht-layout.c
@@ -280,6 +280,22 @@ out:
return ret;
}
+int
+dht_disk_layout_extract_for_subvol (xlator_t *this, dht_layout_t *layout,
+ xlator_t *subvol, int32_t **disk_layout_p)
+{
+ int i = 0;
+
+ for (i = 0; i < layout->cnt; i++) {
+ if (layout->list[i].xlator == subvol)
+ break;
+ }
+
+ if (i == layout->cnt)
+ return -1;
+
+ return dht_disk_layout_extract (this, layout, i, disk_layout_p);
+}
int
dht_disk_layout_merge (xlator_t *this, dht_layout_t *layout,
diff --git a/xlators/cluster/dht/src/dht-messages.h b/xlators/cluster/dht/src/dht-messages.h
index 4403efc..ebad3d1 100644
--- a/xlators/cluster/dht/src/dht-messages.h
+++ b/xlators/cluster/dht/src/dht-messages.h
@@ -40,7 +40,7 @@
*/
#define GLFS_DHT_BASE GLFS_MSGID_COMP_DHT
-#define GLFS_DHT_NUM_MESSAGES 113
+#define GLFS_DHT_NUM_MESSAGES 114
#define GLFS_MSGID_END (GLFS_DHT_BASE + GLFS_DHT_NUM_MESSAGES + 1)
/* Messages with message IDs */
@@ -1043,12 +1043,19 @@
#define DHT_MSG_FD_CTX_SET_FAILED (GLFS_DHT_BASE + 112)
/*
- * @messageid 109112
+ * @messageid 109113
* @diagnosis
* @recommendedaction None
*/
#define DHT_MSG_STALE_LOOKUP (GLFS_DHT_BASE + 113)
+/*
+ * @messageid 109114
+ * @diagnosis
+ * @recommendedaction None
+ */
+#define DHT_MSG_PARENT_LAYOUT_CHANGED (GLFS_DHT_BASE + 114)
+
#define glfs_msg_end_x GLFS_MSGID_END, "Invalid: End of messages"
#endif /* _DHT_MESSAGES_H_ */
diff --git a/xlators/storage/posix/src/posix-messages.h b/xlators/storage/posix/src/posix-messages.h
index 0c0eb05..b5472ad 100644
--- a/xlators/storage/posix/src/posix-messages.h
+++ b/xlators/storage/posix/src/posix-messages.h
@@ -918,6 +918,16 @@
*/
#define P_MSG_INODE_RESOLVE_FAILED (POSIX_COMP_BASE + 108)
+
+/*!
+ * @messageid
+ * @diagnosis
+ * @recommendedaction
+ *
+ */
+
+#define P_MSG_PREOP_CHECK_FAILED (POSIX_COMP_BASE + 109)
+
/*!
* @messageid
* @diagnosis
diff --git a/xlators/storage/posix/src/posix.c b/xlators/storage/posix/src/posix.c
index 3a2fc13..4f286fd 100644
--- a/xlators/storage/posix/src/posix.c
+++ b/xlators/storage/posix/src/posix.c
@@ -1393,18 +1393,22 @@ int
posix_mkdir (call_frame_t *frame, xlator_t *this,
loc_t *loc, mode_t mode, mode_t umask, dict_t *xdata)
{
- int32_t op_ret = -1;
- int32_t op_errno = 0;
- char *real_path = NULL, *gfid_path = NULL;
- char *par_path = NULL;
- struct iatt stbuf = {0, };
- struct posix_private *priv = NULL;
- gid_t gid = 0;
- struct iatt preparent = {0,};
- struct iatt postparent = {0,};
- gf_boolean_t entry_created = _gf_false, gfid_set = _gf_false;
- void *uuid_req = NULL;
- ssize_t size = 0;
+ int32_t op_ret = -1;
+ int32_t op_errno = 0;
+ char *real_path = NULL, *gfid_path = NULL;
+ char *par_path = NULL, *xattr_name = NULL;
+ struct iatt stbuf = {0, };
+ struct posix_private *priv = NULL;
+ gid_t gid = 0;
+ struct iatt preparent = {0,};
+ struct iatt postparent = {0,};
+ gf_boolean_t entry_created = _gf_false, gfid_set = _gf_false;
+ void *uuid_req = NULL;
+ ssize_t size = 0;
+ dict_t *xdata_rsp = NULL;
+ void *disk_xattr = NULL, *arg_xattr = NULL;
+ data_t *arg_data = NULL;
+ char pgfid[GF_UUID_BUF_SIZE] = {0};
DECLARE_OLD_FS_ID_VAR;
@@ -1434,6 +1438,11 @@ posix_mkdir (call_frame_t *frame, xlator_t *this,
goto out;
}
+ if (loc->parent)
+ gf_uuid_unparse (loc->parent->gfid, pgfid);
+ else
+ gf_uuid_unparse (loc->pargfid, pgfid);
+
gid = frame->root->gid;
op_ret = posix_pstat (this, NULL, real_path, &stbuf);
@@ -1477,6 +1486,84 @@ posix_mkdir (call_frame_t *frame, xlator_t *this,
mode |= S_ISGID;
}
+ op_ret = dict_get_str (xdata, GF_PREOP_PARENT_KEY, &xattr_name);
+ if (xattr_name != NULL) {
+ arg_data = dict_get (xdata, xattr_name);
+ if (arg_data) {
+ size = sys_lgetxattr (par_path, xattr_name, NULL, 0);
+ if (size < 0) {
+ op_ret = -1;
+ op_errno = errno;
+ gf_msg (this->name, GF_LOG_ERROR, errno,
+ P_MSG_PREOP_CHECK_FAILED,
+ "mkdir (%s/%s): getxattr on key (%s)"
+ " path (%s) failed ", pgfid,
+ loc->name, xattr_name,
+ par_path);
+ goto out;
+ }
+
+ disk_xattr = alloca (size);
+ if (disk_xattr == NULL) {
+ op_ret = -1;
+ op_errno = errno;
+ gf_msg (this->name, GF_LOG_ERROR, errno,
+ P_MSG_PREOP_CHECK_FAILED,
+ "mkdir (%s/%s): alloca failed during"
+ " preop of mkdir (%s)", pgfid,
+ loc->name, real_path);
+ goto out;
+ }
+
+ size = sys_lgetxattr (par_path, xattr_name,
+ disk_xattr, size);
+ if (size < 0) {
+ op_errno = errno;
+ gf_msg (this->name, GF_LOG_ERROR, errno,
+ P_MSG_PREOP_CHECK_FAILED,
+ "mkdir (%s/%s): getxattr on key (%s)"
+ " path (%s) failed (%s)", pgfid,
+ loc->name, xattr_name,
+ par_path, strerror (errno));
+ goto out;
+ }
+
+ if ((arg_data->len != size)
+ || (memcmp (arg_data->data, disk_xattr, size))) {
+ int ret = 0;
+ gf_msg (this->name, GF_LOG_INFO, EIO,
+ P_MSG_PREOP_CHECK_FAILED,
+ "mkdir (%s/%s): failing preop of "
+ "mkdir (%s) as on-disk"
+ " xattr value differs from argument "
+ "value for key %s", pgfid, loc->name,
+ real_path, xattr_name);
+ op_ret = -1;
+ op_errno = EIO;
+
+ xdata_rsp = dict_new ();
+ if (xdata_rsp == NULL) {
+ gf_msg (this->name, GF_LOG_ERROR,
+ ENOMEM,
+ P_MSG_PREOP_CHECK_FAILED,
+ "mkdir (%s/%s): "
+ "dict allocation failed", pgfid,
+ loc->name);
+ op_errno = ENOMEM;
+ goto out;
+ }
+
+ ret = dict_set_int8 (xdata_rsp,
+ GF_PREOP_CHECK_FAILED, 1);
+ goto out;
+ }
+
+ dict_del (xdata, xattr_name);
+ }
+
+ dict_del (xdata, GF_PREOP_PARENT_KEY);
+ }
+
op_ret = sys_mkdir (real_path, mode);
if (op_ret == -1) {
op_errno = errno;
@@ -1540,7 +1627,7 @@ out:
STACK_UNWIND_STRICT (mkdir, frame, op_ret, op_errno,
(loc)?loc->inode:NULL, &stbuf, &preparent,
- &postparent, NULL);
+ &postparent, xdata_rsp);
if (op_ret < 0) {
if (entry_created)
@@ -1550,6 +1637,9 @@ out:
posix_gfid_unset (this, xdata);
}
+ if (xdata_rsp)
+ dict_unref (xdata_rsp);
+
return 0;
}