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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-28 15:36:09 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-28 15:36:09 -0800
commitb2deee2dc06db7cdf99b84346e69bdb9db9baa85 (patch)
treeceb073fa12c1a9804761ec8ce8911a517b007ed6 /drivers/block
parentd4f4cf77b37eaea58ef863a4cbc95dad3880b524 (diff)
parent54ea0046b6fe36ec18e82d282a29a18da6cdea0f (diff)
downloadlinux-b2deee2dc06db7cdf99b84346e69bdb9db9baa85.tar.bz2
Merge tag 'ceph-for-4.11-rc1' of git://github.com/ceph/ceph-client
Pull ceph updates from Ilya Dryomov: "This time around we have: - support for rbd data-pool feature, which enables rbd images on erasure-coded pools (myself). CEPH_PG_MAX_SIZE has been bumped to allow erasure-coded profiles with k+m up to 32. - a patch for ceph_d_revalidate() performance regression introduced in 4.9, along with some cleanups in the area (Jeff Layton) - a set of fixes for unsafe ->d_parent accesses in CephFS (Jeff Layton) - buffered reads are now processed in rsize windows instead of rasize windows (Andreas Gerstmayr). The new default for rsize mount option is 64M. - ack vs commit distinction is gone, greatly simplifying ->fsync() and MOSDOpReply handling code (myself) ... also a few filesystem bug fixes from Zheng, a CRUSH sync up (CRUSH computations are still serialized though) and several minor fixes and cleanups all over" * tag 'ceph-for-4.11-rc1' of git://github.com/ceph/ceph-client: (52 commits) libceph, rbd, ceph: WRITE | ONDISK -> WRITE libceph: get rid of ack vs commit ceph: remove special ack vs commit behavior ceph: tidy some white space in get_nonsnap_parent() crush: fix dprintk compilation crush: do is_out test only if we do not collide ceph: remove req from unsafe list when unregistering it rbd: constify device_type structure rbd: kill obj_request->object_name and rbd_segment_name_cache rbd: store and use obj_request->object_no rbd: RBD_V{1,2}_DATA_FORMAT macros rbd: factor out __rbd_osd_req_create() rbd: set offset and length outside of rbd_obj_request_create() rbd: support for data-pool feature rbd: introduce rbd_init_layout() rbd: use rbd_obj_bytes() more rbd: remove now unused rbd_obj_request_wait() and helpers rbd: switch rbd_obj_method_sync() to ceph_osdc_call() libceph: pass reply buffer length through ceph_osdc_call() rbd: do away with obj_request in rbd_obj_read_sync() ...
Diffstat (limited to 'drivers/block')
-rw-r--r--drivers/block/rbd.c601
-rw-r--r--drivers/block/rbd_types.h10
2 files changed, 231 insertions, 380 deletions
diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 362cecc77130..4d6807723798 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -123,9 +123,11 @@ static int atomic_dec_return_safe(atomic_t *v)
#define RBD_FEATURE_LAYERING (1<<0)
#define RBD_FEATURE_STRIPINGV2 (1<<1)
#define RBD_FEATURE_EXCLUSIVE_LOCK (1<<2)
+#define RBD_FEATURE_DATA_POOL (1<<7)
#define RBD_FEATURES_ALL (RBD_FEATURE_LAYERING | \
RBD_FEATURE_STRIPINGV2 | \
- RBD_FEATURE_EXCLUSIVE_LOCK)
+ RBD_FEATURE_EXCLUSIVE_LOCK | \
+ RBD_FEATURE_DATA_POOL)
/* Features supported by this (client software) implementation. */
@@ -144,10 +146,9 @@ struct rbd_image_header {
/* These six fields never change for a given rbd image */
char *object_prefix;
__u8 obj_order;
- __u8 crypt_type;
- __u8 comp_type;
u64 stripe_unit;
u64 stripe_count;
+ s64 data_pool_id;
u64 features; /* Might be changeable someday? */
/* The remaining fields need to be updated occasionally */
@@ -230,7 +231,7 @@ enum obj_req_flags {
};
struct rbd_obj_request {
- const char *object_name;
+ u64 object_no;
u64 offset; /* object start byte */
u64 length; /* bytes from offset */
unsigned long flags;
@@ -438,7 +439,6 @@ static DEFINE_SPINLOCK(rbd_client_list_lock);
static struct kmem_cache *rbd_img_request_cache;
static struct kmem_cache *rbd_obj_request_cache;
-static struct kmem_cache *rbd_segment_name_cache;
static int rbd_major;
static DEFINE_IDA(rbd_dev_id_ida);
@@ -973,6 +973,30 @@ static bool rbd_dev_ondisk_valid(struct rbd_image_header_ondisk *ondisk)
}
/*
+ * returns the size of an object in the image
+ */
+static u32 rbd_obj_bytes(struct rbd_image_header *header)
+{
+ return 1U << header->obj_order;
+}
+
+static void rbd_init_layout(struct rbd_device *rbd_dev)
+{
+ if (rbd_dev->header.stripe_unit == 0 ||
+ rbd_dev->header.stripe_count == 0) {
+ rbd_dev->header.stripe_unit = rbd_obj_bytes(&rbd_dev->header);
+ rbd_dev->header.stripe_count = 1;
+ }
+
+ rbd_dev->layout.stripe_unit = rbd_dev->header.stripe_unit;
+ rbd_dev->layout.stripe_count = rbd_dev->header.stripe_count;
+ rbd_dev->layout.object_size = rbd_obj_bytes(&rbd_dev->header);
+ rbd_dev->layout.pool_id = rbd_dev->header.data_pool_id == CEPH_NOPOOL ?
+ rbd_dev->spec->pool_id : rbd_dev->header.data_pool_id;
+ RCU_INIT_POINTER(rbd_dev->layout.pool_ns, NULL);
+}
+
+/*
* Fill an rbd image header with information from the given format 1
* on-disk header.
*/
@@ -992,15 +1016,11 @@ static int rbd_header_from_disk(struct rbd_device *rbd_dev,
/* Allocate this now to avoid having to handle failure below */
if (first_time) {
- size_t len;
-
- len = strnlen(ondisk->object_prefix,
- sizeof (ondisk->object_prefix));
- object_prefix = kmalloc(len + 1, GFP_KERNEL);
+ object_prefix = kstrndup(ondisk->object_prefix,
+ sizeof(ondisk->object_prefix),
+ GFP_KERNEL);
if (!object_prefix)
return -ENOMEM;
- memcpy(object_prefix, ondisk->object_prefix, len);
- object_prefix[len] = '\0';
}
/* Allocate the snapshot context and fill it in */
@@ -1051,12 +1071,7 @@ static int rbd_header_from_disk(struct rbd_device *rbd_dev,
if (first_time) {
header->object_prefix = object_prefix;
header->obj_order = ondisk->options.order;
- header->crypt_type = ondisk->options.crypt_type;
- header->comp_type = ondisk->options.comp_type;
- /* The rest aren't used for format 1 images */
- header->stripe_unit = 0;
- header->stripe_count = 0;
- header->features = 0;
+ rbd_init_layout(rbd_dev);
} else {
ceph_put_snap_context(header->snapc);
kfree(header->snap_names);
@@ -1232,42 +1247,9 @@ static void rbd_dev_mapping_clear(struct rbd_device *rbd_dev)
rbd_dev->mapping.features = 0;
}
-static void rbd_segment_name_free(const char *name)
-{
- /* The explicit cast here is needed to drop the const qualifier */
-
- kmem_cache_free(rbd_segment_name_cache, (void *)name);
-}
-
-static const char *rbd_segment_name(struct rbd_device *rbd_dev, u64 offset)
-{
- char *name;
- u64 segment;
- int ret;
- char *name_format;
-
- name = kmem_cache_alloc(rbd_segment_name_cache, GFP_NOIO);
- if (!name)
- return NULL;
- segment = offset >> rbd_dev->header.obj_order;
- name_format = "%s.%012llx";
- if (rbd_dev->image_format == 2)
- name_format = "%s.%016llx";
- ret = snprintf(name, CEPH_MAX_OID_NAME_LEN + 1, name_format,
- rbd_dev->header.object_prefix, segment);
- if (ret < 0 || ret > CEPH_MAX_OID_NAME_LEN) {
- pr_err("error formatting segment name for #%llu (%d)\n",
- segment, ret);
- rbd_segment_name_free(name);
- name = NULL;
- }
-
- return name;
-}
-
static u64 rbd_segment_offset(struct rbd_device *rbd_dev, u64 offset)
{
- u64 segment_size = (u64) 1 << rbd_dev->header.obj_order;
+ u64 segment_size = rbd_obj_bytes(&rbd_dev->header);
return offset & (segment_size - 1);
}
@@ -1275,7 +1257,7 @@ static u64 rbd_segment_offset(struct rbd_device *rbd_dev, u64 offset)
static u64 rbd_segment_length(struct rbd_device *rbd_dev,
u64 offset, u64 length)
{
- u64 segment_size = (u64) 1 << rbd_dev->header.obj_order;
+ u64 segment_size = rbd_obj_bytes(&rbd_dev->header);
offset &= segment_size - 1;
@@ -1287,14 +1269,6 @@ static u64 rbd_segment_length(struct rbd_device *rbd_dev,
}
/*
- * returns the size of an object in the image
- */
-static u64 rbd_obj_bytes(struct rbd_image_header *header)
-{
- return 1 << header->obj_order;
-}
-
-/*
* bio helpers
*/
@@ -1623,7 +1597,9 @@ static void rbd_obj_request_submit(struct rbd_obj_request *obj_request)
{
struct ceph_osd_request *osd_req = obj_request->osd_req;
- dout("%s %p osd_req %p\n", __func__, obj_request, osd_req);
+ dout("%s %p object_no %016llx %llu~%llu osd_req %p\n", __func__,
+ obj_request, obj_request->object_no, obj_request->offset,
+ obj_request->length, osd_req);
if (obj_request_img_data_test(obj_request)) {
WARN_ON(obj_request->callback != rbd_img_obj_callback);
rbd_img_request_get(obj_request->img_request);
@@ -1631,44 +1607,6 @@ static void rbd_obj_request_submit(struct rbd_obj_request *obj_request)
ceph_osdc_start_request(osd_req->r_osdc, osd_req, false);
}
-static void rbd_obj_request_end(struct rbd_obj_request *obj_request)
-{
- dout("%s %p\n", __func__, obj_request);
- ceph_osdc_cancel_request(obj_request->osd_req);
-}
-
-/*
- * Wait for an object request to complete. If interrupted, cancel the
- * underlying osd request.
- *
- * @timeout: in jiffies, 0 means "wait forever"
- */
-static int __rbd_obj_request_wait(struct rbd_obj_request *obj_request,
- unsigned long timeout)
-{
- long ret;
-
- dout("%s %p\n", __func__, obj_request);
- ret = wait_for_completion_interruptible_timeout(
- &obj_request->completion,
- ceph_timeout_jiffies(timeout));
- if (ret <= 0) {
- if (ret == 0)
- ret = -ETIMEDOUT;
- rbd_obj_request_end(obj_request);
- } else {
- ret = 0;
- }
-
- dout("%s %p ret %d\n", __func__, obj_request, (int)ret);
- return ret;
-}
-
-static int rbd_obj_request_wait(struct rbd_obj_request *obj_request)
-{
- return __rbd_obj_request_wait(obj_request, 0);
-}
-
static void rbd_img_request_complete(struct rbd_img_request *img_request)
{
@@ -1955,8 +1893,8 @@ static void rbd_osd_req_callback(struct ceph_osd_request *osd_req)
rbd_osd_call_callback(obj_request);
break;
default:
- rbd_warn(NULL, "%s: unsupported op %hu",
- obj_request->object_name, (unsigned short) opcode);
+ rbd_warn(NULL, "unexpected OSD op: object_no %016llx opcode %d",
+ obj_request->object_no, opcode);
break;
}
@@ -1980,6 +1918,40 @@ static void rbd_osd_req_format_write(struct rbd_obj_request *obj_request)
osd_req->r_data_offset = obj_request->offset;
}
+static struct ceph_osd_request *
+__rbd_osd_req_create(struct rbd_device *rbd_dev,
+ struct ceph_snap_context *snapc,
+ int num_ops, unsigned int flags,
+ struct rbd_obj_request *obj_request)
+{
+ struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
+ struct ceph_osd_request *req;
+ const char *name_format = rbd_dev->image_format == 1 ?
+ RBD_V1_DATA_FORMAT : RBD_V2_DATA_FORMAT;
+
+ req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false, GFP_NOIO);
+ if (!req)
+ return NULL;
+
+ req->r_flags = flags;
+ req->r_callback = rbd_osd_req_callback;
+ req->r_priv = obj_request;
+
+ req->r_base_oloc.pool = rbd_dev->layout.pool_id;
+ if (ceph_oid_aprintf(&req->r_base_oid, GFP_NOIO, name_format,
+ rbd_dev->header.object_prefix, obj_request->object_no))
+ goto err_req;
+
+ if (ceph_osdc_alloc_messages(req, GFP_NOIO))
+ goto err_req;
+
+ return req;
+
+err_req:
+ ceph_osdc_put_request(req);
+ return NULL;
+}
+
/*
* Create an osd request. A read request has one osd op (read).
* A write request has either one (watch) or two (hint+write) osd ops.
@@ -1993,8 +1965,6 @@ static struct ceph_osd_request *rbd_osd_req_create(
struct rbd_obj_request *obj_request)
{
struct ceph_snap_context *snapc = NULL;
- struct ceph_osd_client *osdc;
- struct ceph_osd_request *osd_req;
if (obj_request_img_data_test(obj_request) &&
(op_type == OBJ_OP_DISCARD || op_type == OBJ_OP_WRITE)) {
@@ -2009,35 +1979,9 @@ static struct ceph_osd_request *rbd_osd_req_create(
rbd_assert(num_ops == 1 || ((op_type == OBJ_OP_WRITE) && num_ops == 2));
- /* Allocate and initialize the request, for the num_ops ops */
-
- osdc = &rbd_dev->rbd_client->client->osdc;
- osd_req = ceph_osdc_alloc_request(osdc, snapc, num_ops, false,
- GFP_NOIO);
- if (!osd_req)
- goto fail;
-
- if (op_type == OBJ_OP_WRITE || op_type == OBJ_OP_DISCARD)
- osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
- else
- osd_req->r_flags = CEPH_OSD_FLAG_READ;
-
- osd_req->r_callback = rbd_osd_req_callback;
- osd_req->r_priv = obj_request;
-
- osd_req->r_base_oloc.pool = rbd_dev->layout.pool_id;
- if (ceph_oid_aprintf(&osd_req->r_base_oid, GFP_NOIO, "%s",
- obj_request->object_name))
- goto fail;
-
- if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO))
- goto fail;
-
- return osd_req;
-
-fail:
- ceph_osdc_put_request(osd_req);
- return NULL;
+ return __rbd_osd_req_create(rbd_dev, snapc, num_ops,
+ (op_type == OBJ_OP_WRITE || op_type == OBJ_OP_DISCARD) ?
+ CEPH_OSD_FLAG_WRITE : CEPH_OSD_FLAG_READ, obj_request);
}
/*
@@ -2050,10 +1994,6 @@ static struct ceph_osd_request *
rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
{
struct rbd_img_request *img_request;
- struct ceph_snap_context *snapc;
- struct rbd_device *rbd_dev;
- struct ceph_osd_client *osdc;
- struct ceph_osd_request *osd_req;
int num_osd_ops = 3;
rbd_assert(obj_request_img_data_test(obj_request));
@@ -2065,77 +2005,34 @@ rbd_osd_req_create_copyup(struct rbd_obj_request *obj_request)
if (img_request_discard_test(img_request))
num_osd_ops = 2;
- /* Allocate and initialize the request, for all the ops */
-
- snapc = img_request->snapc;
- rbd_dev = img_request->rbd_dev;
- osdc = &rbd_dev->rbd_client->client->osdc;
- osd_req = ceph_osdc_alloc_request(osdc, snapc, num_osd_ops,
- false, GFP_NOIO);
- if (!osd_req)
- goto fail;
-
- osd_req->r_flags = CEPH_OSD_FLAG_WRITE | CEPH_OSD_FLAG_ONDISK;
- osd_req->r_callback = rbd_osd_req_callback;
- osd_req->r_priv = obj_request;
-
- osd_req->r_base_oloc.pool = rbd_dev->layout.pool_id;
- if (ceph_oid_aprintf(&osd_req->r_base_oid, GFP_NOIO, "%s",
- obj_request->object_name))
- goto fail;
-
- if (ceph_osdc_alloc_messages(osd_req, GFP_NOIO))
- goto fail;
-
- return osd_req;
-
-fail:
- ceph_osdc_put_request(osd_req);
- return NULL;
+ return __rbd_osd_req_create(img_request->rbd_dev,
+ img_request->snapc, num_osd_ops,
+ CEPH_OSD_FLAG_WRITE, obj_request);
}
-
static void rbd_osd_req_destroy(struct ceph_osd_request *osd_req)
{
ceph_osdc_put_request(osd_req);
}
-/* object_name is assumed to be a non-null pointer and NUL-terminated */
-
-static struct rbd_obj_request *rbd_obj_request_create(const char *object_name,
- u64 offset, u64 length,
- enum obj_request_type type)
+static struct rbd_obj_request *
+rbd_obj_request_create(enum obj_request_type type)
{
struct rbd_obj_request *obj_request;
- size_t size;
- char *name;
rbd_assert(obj_request_type_valid(type));
- size = strlen(object_name) + 1;
- name = kmalloc(size, GFP_NOIO);
- if (!name)
- return NULL;
-
obj_request = kmem_cache_zalloc(rbd_obj_request_cache, GFP_NOIO);
- if (!obj_request) {
- kfree(name);
+ if (!obj_request)
return NULL;
- }
- obj_request->object_name = memcpy(name, object_name, size);
- obj_request->offset = offset;
- obj_request->length = length;
- obj_request->flags = 0;
obj_request->which = BAD_WHICH;
obj_request->type = type;
INIT_LIST_HEAD(&obj_request->links);
init_completion(&obj_request->completion);
kref_init(&obj_request->kref);
- dout("%s: \"%s\" %llu/%llu %d -> obj %p\n", __func__, object_name,
- offset, length, (int)type, obj_request);
-
+ dout("%s %p\n", __func__, obj_request);
return obj_request;
}
@@ -2170,8 +2067,6 @@ static void rbd_obj_request_destroy(struct kref *kref)
break;
}
- kfree(obj_request->object_name);
- obj_request->object_name = NULL;
kmem_cache_free(rbd_obj_request_cache, obj_request);
}
@@ -2546,22 +2441,18 @@ static int rbd_img_request_fill(struct rbd_img_request *img_request,
while (resid) {
struct ceph_osd_request *osd_req;
- const char *object_name;
- u64 offset;
- u64 length;
+ u64 object_no = img_offset >> rbd_dev->header.obj_order;
+ u64 offset = rbd_segment_offset(rbd_dev, img_offset);
+ u64 length = rbd_segment_length(rbd_dev, img_offset, resid);
- object_name = rbd_segment_name(rbd_dev, img_offset);
- if (!object_name)
- goto out_unwind;
- offset = rbd_segment_offset(rbd_dev, img_offset);
- length = rbd_segment_length(rbd_dev, img_offset, resid);
- obj_request = rbd_obj_request_create(object_name,
- offset, length, type);
- /* object request has its own copy of the object name */
- rbd_segment_name_free(object_name);
+ obj_request = rbd_obj_request_create(type);
if (!obj_request)
goto out_unwind;
+ obj_request->object_no = object_no;
+ obj_request->offset = offset;
+ obj_request->length = length;
+
/*
* set obj_request->img_request before creating the
* osd_request so that it gets the right snapc
@@ -2771,7 +2662,7 @@ static int rbd_img_obj_parent_read_full(struct rbd_obj_request *obj_request)
* child image to which the original request was to be sent.
*/
img_offset = obj_request->img_offset - obj_request->offset;
- length = (u64)1 << rbd_dev->header.obj_order;
+ length = rbd_obj_bytes(&rbd_dev->header);
/*
* There is no defined parent data beyond the parent
@@ -2900,11 +2791,12 @@ static int rbd_img_obj_exists_submit(struct rbd_obj_request *obj_request)
size_t size;
int ret;
- stat_request = rbd_obj_request_create(obj_request->object_name, 0, 0,
- OBJ_REQUEST_PAGES);
+ stat_request = rbd_obj_request_create(OBJ_REQUEST_PAGES);
if (!stat_request)
return -ENOMEM;
+ stat_request->object_no = obj_request->object_no;
+
stat_request->osd_req = rbd_osd_req_create(rbd_dev, OBJ_OP_READ, 1,
stat_request);
if (!stat_request->osd_req) {
@@ -3983,17 +3875,17 @@ out:
* returned in the outbound buffer, or a negative error code.
*/
static int rbd_obj_method_sync(struct rbd_device *rbd_dev,
- const char *object_name,
- const char *class_name,
+ struct ceph_object_id *oid,
+ struct ceph_object_locator *oloc,
const char *method_name,
const void *outbound,
size_t outbound_size,
void *inbound,
size_t inbound_size)
{
- struct rbd_obj_request *obj_request;
- struct page **pages;
- u32 page_count;
+ struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
+ struct page *req_page = NULL;
+ struct page *reply_page;
int ret;
/*
@@ -4003,61 +3895,35 @@ static int rbd_obj_method_sync(struct rbd_device *rbd_dev,
* method. Currently if this is present it will be a
* snapshot id.
*/
- page_count = (u32)calc_pages_for(0, inbound_size);
- pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
- if (IS_ERR(pages))
- return PTR_ERR(pages);
-
- ret = -ENOMEM;
- obj_request = rbd_obj_request_create(object_name, 0, inbound_size,
- OBJ_REQUEST_PAGES);
- if (!obj_request)
- goto out;
+ if (outbound) {
+ if (outbound_size > PAGE_SIZE)
+ return -E2BIG;
- obj_request->pages = pages;
- obj_request->page_count = page_count;
-
- obj_request->osd_req = rbd_osd_req_create(rbd_dev, OBJ_OP_READ, 1,
- obj_request);
- if (!obj_request->osd_req)
- goto out;
-
- osd_req_op_cls_init(obj_request->osd_req, 0, CEPH_OSD_OP_CALL,
- class_name, method_name);
- if (outbound_size) {
- struct ceph_pagelist *pagelist;
-
- pagelist = kmalloc(sizeof (*pagelist), GFP_NOFS);
- if (!pagelist)
- goto out;
+ req_page = alloc_page(GFP_KERNEL);
+ if (!req_page)
+ return -ENOMEM;
- ceph_pagelist_init(pagelist);
- ceph_pagelist_append(pagelist, outbound, outbound_size);
- osd_req_op_cls_request_data_pagelist(obj_request->osd_req, 0,
- pagelist);
+ memcpy(page_address(req_page), outbound, outbound_size);
}
- osd_req_op_cls_response_data_pages(obj_request->osd_req, 0,
- obj_request->pages, inbound_size,
- 0, false, false);
-
- rbd_obj_request_submit(obj_request);
- ret = rbd_obj_request_wait(obj_request);
- if (ret)
- goto out;
- ret = obj_request->result;
- if (ret < 0)
- goto out;
+ reply_page = alloc_page(GFP_KERNEL);
+ if (!reply_page) {
+ if (req_page)
+ __free_page(req_page);
+ return -ENOMEM;
+ }
- rbd_assert(obj_request->xferred < (u64)INT_MAX);
- ret = (int)obj_request->xferred;
- ceph_copy_from_page_vector(pages, inbound, 0, obj_request->xferred);
-out:
- if (obj_request)
- rbd_obj_request_put(obj_request);
- else
- ceph_release_page_vector(pages, page_count);
+ ret = ceph_osdc_call(osdc, oid, oloc, RBD_DRV_NAME, method_name,
+ CEPH_OSD_FLAG_READ, req_page, outbound_size,
+ reply_page, &inbound_size);
+ if (!ret) {
+ memcpy(inbound, page_address(reply_page), inbound_size);
+ ret = inbound_size;
+ }
+ if (req_page)
+ __free_page(req_page);
+ __free_page(reply_page);
return ret;
}
@@ -4256,63 +4122,46 @@ static void rbd_free_disk(struct rbd_device *rbd_dev)
}
static int rbd_obj_read_sync(struct rbd_device *rbd_dev,
- const char *object_name,
- u64 offset, u64 length, void *buf)
+ struct ceph_object_id *oid,
+ struct ceph_object_locator *oloc,
+ void *buf, int buf_len)
{
- struct rbd_obj_request *obj_request;
- struct page **pages = NULL;
- u32 page_count;
- size_t size;
+ struct ceph_osd_client *osdc = &rbd_dev->rbd_client->client->osdc;
+ struct ceph_osd_request *req;
+ struct page **pages;
+ int num_pages = calc_pages_for(0, buf_len);
int ret;
- page_count = (u32) calc_pages_for(offset, length);
- pages = ceph_alloc_page_vector(page_count, GFP_KERNEL);
- if (IS_ERR(pages))
- return PTR_ERR(pages);
-
- ret = -ENOMEM;
- obj_request = rbd_obj_request_create(object_name, offset, length,
- OBJ_REQUEST_PAGES);
- if (!obj_request)
- goto out;
-
- obj_request->pages = pages;
- obj_request->page_count = page_count;
-
- obj_request->osd_req = rbd_osd_req_create(rbd_dev, OBJ_OP_READ, 1,
- obj_request);
- if (!obj_request->osd_req)
- goto out;
+ req = ceph_osdc_alloc_request(osdc, NULL, 1, false, GFP_KERNEL);
+ if (!req)
+ return -ENOMEM;
- osd_req_op_extent_init(obj_request->osd_req, 0, CEPH_OSD_OP_READ,
- offset, length, 0, 0);
- osd_req_op_extent_osd_data_pages(obj_request->osd_req, 0,
- obj_request->pages,
- obj_request->length,
- obj_request->offset & ~PAGE_MASK,
- false, false);
+ ceph_oid_copy(&req->r_base_oid, oid);
+ ceph_oloc_copy(&req->r_base_oloc, oloc);
+ req->r_flags = CEPH_OSD_FLAG_READ;
- rbd_obj_request_submit(obj_request);
- ret = rbd_obj_request_wait(obj_request);
+ ret = ceph_osdc_alloc_messages(req, GFP_KERNEL);
if (ret)
- goto out;
+ goto out_req;
- ret = obj_request->result;
- if (ret < 0)
- goto out;
+ pages = ceph_alloc_page_vector(num_pages, GFP_KERNEL);
+ if (IS_ERR(pages)) {
+ ret = PTR_ERR(pages);
+ goto out_req;
+ }
- rbd_assert(obj_request->xferred <= (u64) SIZE_MAX);
- size = (size_t) obj_request->xferred;
- ceph_copy_from_page_vector(pages, buf, 0, size);
- rbd_assert(size <= (size_t)INT_MAX);
- ret = (int)size;
-out:
- if (obj_request)
- rbd_obj_request_put(obj_request);
- else
- ceph_release_page_vector(pages, page_count);
+ osd_req_op_extent_init(req, 0, CEPH_OSD_OP_READ, 0, buf_len, 0, 0);
+ osd_req_op_extent_osd_data_pages(req, 0, pages, buf_len, 0, false,
+ true);
+
+ ceph_osdc_start_request(osdc, req, false);
+ ret = ceph_osdc_wait_request(osdc, req);
+ if (ret >= 0)
+ ceph_copy_from_page_vector(pages, buf, 0, ret);
+out_req:
+ ceph_osdc_put_request(req);
return ret;
}
@@ -4348,8 +4197,8 @@ static int rbd_dev_v1_header_info(struct rbd_device *rbd_dev)
if (!ondisk)
return -ENOMEM;
- ret = rbd_obj_read_sync(rbd_dev, rbd_dev->header_oid.name,
- 0, size, ondisk);
+ ret = rbd_obj_read_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, ondisk, size);
if (ret < 0)
goto out;
if ((size_t)ret < size) {
@@ -4781,7 +4630,7 @@ static const struct attribute_group *rbd_attr_groups[] = {
static void rbd_dev_release(struct device *dev);
-static struct device_type rbd_device_type = {
+static const struct device_type rbd_device_type = {
.name = "rbd",
.groups = rbd_attr_groups,
.release = rbd_dev_release,
@@ -4876,8 +4725,9 @@ static struct rbd_device *__rbd_dev_create(struct rbd_client *rbdc,
INIT_LIST_HEAD(&rbd_dev->node);
init_rwsem(&rbd_dev->header_rwsem);
+ rbd_dev->header.data_pool_id = CEPH_NOPOOL;
ceph_oid_init(&rbd_dev->header_oid);
- ceph_oloc_init(&rbd_dev->header_oloc);
+ rbd_dev->header_oloc.pool = spec->pool_id;
mutex_init(&rbd_dev->watch_mutex);
rbd_dev->watch_state = RBD_WATCH_STATE_UNREGISTERED;
@@ -4899,12 +4749,6 @@ static struct rbd_device *__rbd_dev_create(struct rbd_client *rbdc,
rbd_dev->rbd_client = rbdc;
rbd_dev->spec = spec;
- rbd_dev->layout.stripe_unit = 1 << RBD_MAX_OBJ_ORDER;
- rbd_dev->layout.stripe_count = 1;
- rbd_dev->layout.object_size = 1 << RBD_MAX_OBJ_ORDER;
- rbd_dev->layout.pool_id = spec->pool_id;
- RCU_INIT_POINTER(rbd_dev->layout.pool_ns, NULL);
-
return rbd_dev;
}
@@ -4970,10 +4814,10 @@ static int _rbd_dev_v2_snap_size(struct rbd_device *rbd_dev, u64 snap_id,
__le64 size;
} __attribute__ ((packed)) size_buf = { 0 };
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_size",
- &snapid, sizeof (snapid),
- &size_buf, sizeof (size_buf));
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_size",
+ &snapid, sizeof(snapid),
+ &size_buf, sizeof(size_buf));
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
return ret;
@@ -5010,9 +4854,9 @@ static int rbd_dev_v2_object_prefix(struct rbd_device *rbd_dev)
if (!reply_buf)
return -ENOMEM;
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_object_prefix", NULL, 0,
- reply_buf, RBD_OBJ_PREFIX_LEN_MAX);
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_object_prefix",
+ NULL, 0, reply_buf, RBD_OBJ_PREFIX_LEN_MAX);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out;
@@ -5045,10 +4889,10 @@ static int _rbd_dev_v2_snap_features(struct rbd_device *rbd_dev, u64 snap_id,
u64 unsup;
int ret;
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_features",
- &snapid, sizeof (snapid),
- &features_buf, sizeof (features_buf));
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_features",
+ &snapid, sizeof(snapid),
+ &features_buf, sizeof(features_buf));
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
return ret;
@@ -5107,10 +4951,9 @@ static int rbd_dev_v2_parent_info(struct rbd_device *rbd_dev)
}
snapid = cpu_to_le64(rbd_dev->spec->snap_id);
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_parent",
- &snapid, sizeof (snapid),
- reply_buf, size);
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_parent",
+ &snapid, sizeof(snapid), reply_buf, size);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out_err;
@@ -5210,9 +5053,9 @@ static int rbd_dev_v2_striping_info(struct rbd_device *rbd_dev)
u64 stripe_count;
int ret;
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_stripe_unit_count", NULL, 0,
- (char *)&striping_info_buf, size);
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_stripe_unit_count",
+ NULL, 0, &striping_info_buf, size);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
return ret;
@@ -5226,7 +5069,7 @@ static int rbd_dev_v2_striping_info(struct rbd_device *rbd_dev)
* out, and only fail if the image has non-default values.
*/
ret = -EINVAL;
- obj_size = (u64)1 << rbd_dev->header.obj_order;
+ obj_size = rbd_obj_bytes(&rbd_dev->header);
p = &striping_info_buf;
stripe_unit = ceph_decode_64(&p);
if (stripe_unit != obj_size) {
@@ -5247,8 +5090,27 @@ static int rbd_dev_v2_striping_info(struct rbd_device *rbd_dev)
return 0;
}
+static int rbd_dev_v2_data_pool(struct rbd_device *rbd_dev)
+{
+ __le64 data_pool_id;
+ int ret;
+
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_data_pool",
+ NULL, 0, &data_pool_id, sizeof(data_pool_id));
+ if (ret < 0)
+ return ret;
+ if (ret < sizeof(data_pool_id))
+ return -EBADMSG;
+
+ rbd_dev->header.data_pool_id = le64_to_cpu(data_pool_id);
+ WARN_ON(rbd_dev->header.data_pool_id == CEPH_NOPOOL);
+ return 0;
+}
+
static char *rbd_dev_image_name(struct rbd_device *rbd_dev)
{
+ CEPH_DEFINE_OID_ONSTACK(oid);
size_t image_id_size;
char *image_id;
void *p;
@@ -5276,10 +5138,10 @@ static char *rbd_dev_image_name(struct rbd_device *rbd_dev)
if (!reply_buf)
goto out;
- ret = rbd_obj_method_sync(rbd_dev, RBD_DIRECTORY,
- "rbd", "dir_get_name",
- image_id, image_id_size,
- reply_buf, size);
+ ceph_oid_printf(&oid, "%s", RBD_DIRECTORY);
+ ret = rbd_obj_method_sync(rbd_dev, &oid, &rbd_dev->header_oloc,
+ "dir_get_name", image_id, image_id_size,
+ reply_buf, size);
if (ret < 0)
goto out;
p = reply_buf;
@@ -5458,9 +5320,9 @@ static int rbd_dev_v2_snap_context(struct rbd_device *rbd_dev)
if (!reply_buf)
return -ENOMEM;
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_snapcontext", NULL, 0,
- reply_buf, size);
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_snapcontext",
+ NULL, 0, reply_buf, size);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0)
goto out;
@@ -5523,10 +5385,9 @@ static const char *rbd_dev_v2_snap_name(struct rbd_device *rbd_dev,
return ERR_PTR(-ENOMEM);
snapid = cpu_to_le64(snap_id);
- ret = rbd_obj_method_sync(rbd_dev, rbd_dev->header_oid.name,
- "rbd", "get_snapshot_name",
- &snapid, sizeof (snapid),
- reply_buf, size);
+ ret = rbd_obj_method_sync(rbd_dev, &rbd_dev->header_oid,
+ &rbd_dev->header_oloc, "get_snapshot_name",
+ &snapid, sizeof(snapid), reply_buf, size);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret < 0) {
snap_name = ERR_PTR(ret);
@@ -5833,7 +5694,7 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev)
{
int ret;
size_t size;
- char *object_name;
+ CEPH_DEFINE_OID_ONSTACK(oid);
void *response;
char *image_id;
@@ -5853,12 +5714,12 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev)
* First, see if the format 2 image id file exists, and if
* so, get the image's persistent id from it.
*/
- size = sizeof (RBD_ID_PREFIX) + strlen(rbd_dev->spec->image_name);
- object_name = kmalloc(size, GFP_NOIO);
- if (!object_name)
- return -ENOMEM;
- sprintf(object_name, "%s%s", RBD_ID_PREFIX, rbd_dev->spec->image_name);
- dout("rbd id object name is %s\n", object_name);
+ ret = ceph_oid_aprintf(&oid, GFP_KERNEL, "%s%s", RBD_ID_PREFIX,
+ rbd_dev->spec->image_name);
+ if (ret)
+ return ret;
+
+ dout("rbd id object name is %s\n", oid.name);
/* Response will be an encoded string, which includes a length */
@@ -5871,9 +5732,9 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev)
/* If it doesn't exist we'll assume it's a format 1 image */
- ret = rbd_obj_method_sync(rbd_dev, object_name,
- "rbd", "get_id", NULL, 0,
- response, RBD_IMAGE_ID_LEN_MAX);
+ ret = rbd_obj_method_sync(rbd_dev, &oid, &rbd_dev->header_oloc,
+ "get_id", NULL, 0,
+ response, RBD_IMAGE_ID_LEN_MAX);
dout("%s: rbd_obj_method_sync returned %d\n", __func__, ret);
if (ret == -ENOENT) {
image_id = kstrdup("", GFP_KERNEL);
@@ -5896,8 +5757,7 @@ static int rbd_dev_image_id(struct rbd_device *rbd_dev)
}
out:
kfree(response);
- kfree(object_name);
-
+ ceph_oid_destroy(&oid);
return ret;
}
@@ -5944,14 +5804,20 @@ static int rbd_dev_v2_header_onetime(struct rbd_device *rbd_dev)
if (ret < 0)
goto out_err;
}
- /* No support for crypto and compression type format 2 images */
+ if (rbd_dev->header.features & RBD_FEATURE_DATA_POOL) {
+ ret = rbd_dev_v2_data_pool(rbd_dev);
+ if (ret)
+ goto out_err;
+ }
+
+ rbd_init_layout(rbd_dev);
return 0;
+
out_err:
rbd_dev->header.features = 0;
kfree(rbd_dev->header.object_prefix);
rbd_dev->header.object_prefix = NULL;
-
return ret;
}
@@ -6077,8 +5943,6 @@ static int rbd_dev_header_name(struct rbd_device *rbd_dev)
/* Record the header object name for this rbd image. */
rbd_assert(rbd_image_format_valid(rbd_dev->image_format));
-
- rbd_dev->header_oloc.pool = rbd_dev->layout.pool_id;
if (rbd_dev->image_format == 1)
ret = ceph_oid_aprintf(&rbd_dev->header_oid, GFP_KERNEL, "%s%s",
spec->image_name, RBD_SUFFIX);
@@ -6471,27 +6335,16 @@ static int rbd_slab_init(void)
if (!rbd_obj_request_cache)
goto out_err;
- rbd_assert(!rbd_segment_name_cache);
- rbd_segment_name_cache = kmem_cache_create("rbd_segment_name",
- CEPH_MAX_OID_NAME_LEN + 1, 1, 0, NULL);
- if (rbd_segment_name_cache)
- return 0;
-out_err:
- kmem_cache_destroy(rbd_obj_request_cache);
- rbd_obj_request_cache = NULL;
+ return 0;
+out_err:
kmem_cache_destroy(rbd_img_request_cache);
rbd_img_request_cache = NULL;
-
return -ENOMEM;
}
static void rbd_slab_exit(void)
{
- rbd_assert(rbd_segment_name_cache);
- kmem_cache_destroy(rbd_segment_name_cache);
- rbd_segment_name_cache = NULL;
-
rbd_assert(rbd_obj_request_cache);
kmem_cache_destroy(rbd_obj_request_cache);
rbd_obj_request_cache = NULL;
diff --git a/drivers/block/rbd_types.h b/drivers/block/rbd_types.h
index 94f367db27b0..62ff50d3e7a6 100644
--- a/drivers/block/rbd_types.h
+++ b/drivers/block/rbd_types.h
@@ -25,8 +25,8 @@
*/
#define RBD_HEADER_PREFIX "rbd_header."
-#define RBD_DATA_PREFIX "rbd_data."
#define RBD_ID_PREFIX "rbd_id."
+#define RBD_V2_DATA_FORMAT "%s.%016llx"
#define RBD_LOCK_NAME "rbd_lock"
#define RBD_LOCK_TAG "internal"
@@ -42,13 +42,14 @@ enum rbd_notify_op {
/*
* For format version 1, rbd image 'foo' consists of objects
* foo.rbd - image metadata
- * rb.<idhi>.<idlo>.00000000
- * rb.<idhi>.<idlo>.00000001
+ * rb.<idhi>.<idlo>.<extra>.000000000000
+ * rb.<idhi>.<idlo>.<extra>.000000000001
* ... - data
* There is no notion of a persistent image id in rbd format 1.
*/
#define RBD_SUFFIX ".rbd"
+#define RBD_V1_DATA_FORMAT "%s.%012llx"
#define RBD_DIRECTORY "rbd_directory"
#define RBD_INFO "rbd_info"
@@ -57,9 +58,6 @@ enum rbd_notify_op {
#define RBD_MIN_OBJ_ORDER 16
#define RBD_MAX_OBJ_ORDER 30
-#define RBD_COMP_NONE 0
-#define RBD_CRYPT_NONE 0
-
#define RBD_HEADER_TEXT "<<< Rados Block Device Image >>>\n"
#define RBD_HEADER_SIGNATURE "RBD"
#define RBD_HEADER_VERSION "001.005"