2017-03-20 18:26:50 +00:00
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/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SPDK_BLOBSTORE_H
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#define SPDK_BLOBSTORE_H
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#include "spdk/assert.h"
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#include "spdk/blob.h"
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#include "spdk/queue.h"
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#include "spdk/util.h"
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2017-09-10 21:46:40 +00:00
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#include "request.h"
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2017-03-20 18:26:50 +00:00
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/* In Memory Data Structures
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*
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* The following data structures exist only in memory.
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*/
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#define SPDK_BLOB_OPTS_CLUSTER_SZ (1024 * 1024)
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#define SPDK_BLOB_OPTS_NUM_MD_PAGES UINT32_MAX
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2017-05-15 21:35:03 +00:00
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#define SPDK_BLOB_OPTS_MAX_MD_OPS 32
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lvol, blob: make channel operations number configurable for blob.
We need to make the channel operations numbers configurable for blob.
Reason: for iSCSI tests, if there is one CPU core, there will be only
one channel, thus read stress tests would
fail since we need more operations for blob channel.
Select a value equal to the small buffer size(8192) for
bdev layer, thus we can solve the iSCSI read issue
correctly. Since for bdev read, we currently only
allow 8192 active bdev I/o requests, so this solution should
work.
PS: Current solution is still not perfect, I think the very
precise fix is that we need to restrict sending I/Os
to the blob, if there is no channel operations. Though
current code, we have retry I/O in bdev , but it still fails
the iSCSI high pressure test.
Change-Id: I211f7a89d144af2c96ad4cc1bd7ac8e94adc72e7
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/393115
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
2017-12-28 03:07:45 +00:00
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#define SPDK_BLOB_OPTS_DEFAULT_CHANNEL_OPS 512
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2017-09-30 20:24:32 +00:00
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#define SPDK_BLOB_BLOBID_HIGH_BIT (1ULL << 32)
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2017-03-20 18:26:50 +00:00
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struct spdk_xattr {
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/* TODO: reorder for best packing */
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uint32_t index;
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char *name;
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void *value;
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uint16_t value_len;
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TAILQ_ENTRY(spdk_xattr) link;
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};
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/* The mutable part of the blob data that is sync'd to
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* disk. The data in here is both mutable and persistent.
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*/
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struct spdk_blob_mut_data {
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/* Number of data clusters in the blob */
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uint64_t num_clusters;
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/* Array LBAs that are the beginning of a cluster, in
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* the order they appear in the blob.
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*/
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uint64_t *clusters;
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/* The size of the clusters array. This is greater than or
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* equal to 'num_clusters'.
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*/
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size_t cluster_array_size;
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/* Number of metadata pages */
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uint32_t num_pages;
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/* Array of page offsets into the metadata region, in
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* the order of the metadata page sequence.
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*/
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uint32_t *pages;
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};
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enum spdk_blob_state {
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/* The blob in-memory version does not match the on-disk
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* version.
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*/
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SPDK_BLOB_STATE_DIRTY,
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/* The blob in memory version of the blob matches the on disk
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* version.
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*/
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SPDK_BLOB_STATE_CLEAN,
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/* The in-memory state being synchronized with the on-disk
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* blob state. */
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SPDK_BLOB_STATE_LOADING,
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};
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2018-01-29 09:25:44 +00:00
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TAILQ_HEAD(spdk_xattr_tailq, spdk_xattr);
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2018-02-20 18:14:12 +00:00
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struct spdk_blob {
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2017-03-20 18:26:50 +00:00
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struct spdk_blob_store *bs;
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uint32_t open_ref;
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spdk_blob_id id;
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enum spdk_blob_state state;
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/* Two copies of the mutable data. One is a version
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* that matches the last known data on disk (clean).
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* The other (active) is the current data. Syncing
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* a blob makes the clean match the active.
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*/
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struct spdk_blob_mut_data clean;
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struct spdk_blob_mut_data active;
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2017-11-22 23:04:12 +00:00
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bool invalid;
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2017-11-21 23:24:00 +00:00
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bool data_ro;
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bool md_ro;
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2017-11-21 23:10:28 +00:00
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uint64_t invalid_flags;
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uint64_t data_ro_flags;
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uint64_t md_ro_flags;
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2018-01-30 12:32:03 +00:00
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struct spdk_bs_dev *back_bs_dev;
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2017-03-20 18:26:50 +00:00
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/* TODO: The xattrs are mutable, but we don't want to be
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* copying them unecessarily. Figure this out.
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*/
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2018-01-29 09:25:44 +00:00
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struct spdk_xattr_tailq xattrs;
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struct spdk_xattr_tailq xattrs_internal;
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2017-03-20 18:26:50 +00:00
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2018-02-20 18:14:12 +00:00
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TAILQ_ENTRY(spdk_blob) link;
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2017-03-20 18:26:50 +00:00
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};
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struct spdk_blob_store {
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uint64_t md_start; /* Offset from beginning of disk, in pages */
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uint32_t md_len; /* Count, in pages */
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2017-05-15 21:46:07 +00:00
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2017-12-11 22:09:36 +00:00
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struct spdk_io_channel *md_channel;
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uint32_t max_channel_ops;
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2017-03-20 18:26:50 +00:00
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2018-01-26 20:44:36 +00:00
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struct spdk_thread *md_thread;
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2017-03-20 18:26:50 +00:00
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struct spdk_bs_dev *dev;
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struct spdk_bit_array *used_md_pages;
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struct spdk_bit_array *used_clusters;
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2017-12-12 22:19:46 +00:00
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struct spdk_bit_array *used_blobids;
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2017-03-20 18:26:50 +00:00
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2018-01-25 12:27:05 +00:00
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pthread_mutex_t used_clusters_mutex;
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2017-03-20 18:26:50 +00:00
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uint32_t cluster_sz;
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uint64_t total_clusters;
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2017-11-08 13:41:37 +00:00
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uint64_t total_data_clusters;
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2017-03-20 18:26:50 +00:00
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uint64_t num_free_clusters;
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uint32_t pages_per_cluster;
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spdk_blob_id super_blob;
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2018-03-02 19:49:36 +00:00
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struct spdk_bs_type bstype;
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2017-03-20 18:26:50 +00:00
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2017-09-10 21:46:40 +00:00
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struct spdk_bs_cpl unload_cpl;
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int unload_err;
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2018-03-02 19:49:36 +00:00
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TAILQ_HEAD(, spdk_blob) blobs;
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2017-03-20 18:26:50 +00:00
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};
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struct spdk_bs_channel {
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struct spdk_bs_request_set *req_mem;
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TAILQ_HEAD(, spdk_bs_request_set) reqs;
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struct spdk_blob_store *bs;
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struct spdk_bs_dev *dev;
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struct spdk_io_channel *dev_channel;
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2018-01-30 12:32:03 +00:00
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2018-03-13 00:19:11 +00:00
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TAILQ_HEAD(, spdk_bs_request_set) need_cluster_alloc;
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2017-03-20 18:26:50 +00:00
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};
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2017-11-15 13:18:56 +00:00
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/** operation type */
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enum spdk_blob_op_type {
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SPDK_BLOB_WRITE,
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SPDK_BLOB_READ,
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SPDK_BLOB_UNMAP,
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SPDK_BLOB_WRITE_ZEROES,
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2017-11-29 20:14:51 +00:00
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SPDK_BLOB_WRITEV,
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SPDK_BLOB_READV,
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2017-11-15 13:18:56 +00:00
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};
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2018-01-29 16:03:21 +00:00
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/* back bs_dev */
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#define BLOB_SNAPSHOT "SNAP"
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struct spdk_blob_bs_dev {
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struct spdk_bs_dev bs_dev;
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struct spdk_blob *blob;
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};
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2017-03-20 18:26:50 +00:00
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/* On-Disk Data Structures
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*
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* The following data structures exist on disk.
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*/
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2017-09-27 13:03:23 +00:00
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#define SPDK_BS_INITIAL_VERSION 1
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2017-11-21 23:10:28 +00:00
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#define SPDK_BS_VERSION 3 /* current version */
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2017-03-20 18:26:50 +00:00
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#pragma pack(push, 1)
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#define SPDK_MD_MASK_TYPE_USED_PAGES 0
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#define SPDK_MD_MASK_TYPE_USED_CLUSTERS 1
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2017-12-12 22:19:46 +00:00
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#define SPDK_MD_MASK_TYPE_USED_BLOBIDS 2
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2017-03-20 18:26:50 +00:00
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struct spdk_bs_md_mask {
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uint8_t type;
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uint32_t length; /* In bits */
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uint8_t mask[0];
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};
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#define SPDK_MD_DESCRIPTOR_TYPE_PADDING 0
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#define SPDK_MD_DESCRIPTOR_TYPE_EXTENT 1
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#define SPDK_MD_DESCRIPTOR_TYPE_XATTR 2
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2017-11-21 23:10:28 +00:00
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#define SPDK_MD_DESCRIPTOR_TYPE_FLAGS 3
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2018-01-29 09:25:44 +00:00
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#define SPDK_MD_DESCRIPTOR_TYPE_XATTR_INTERNAL 4
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2017-03-20 18:26:50 +00:00
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struct spdk_blob_md_descriptor_xattr {
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uint8_t type;
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uint32_t length;
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uint16_t name_length;
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uint16_t value_length;
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char name[0];
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/* String name immediately followed by string value. */
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};
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struct spdk_blob_md_descriptor_extent {
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uint8_t type;
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uint32_t length;
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struct {
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uint32_t cluster_idx;
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uint32_t length; /* In units of clusters */
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} extents[0];
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};
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2017-12-06 13:06:13 +00:00
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#define SPDK_BLOB_THIN_PROV (1ULL << 0)
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2018-01-29 09:25:44 +00:00
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#define SPDK_BLOB_INTERNAL_XATTR (1ULL << 1)
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#define SPDK_BLOB_INVALID_FLAGS_MASK (SPDK_BLOB_THIN_PROV | SPDK_BLOB_INTERNAL_XATTR)
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2017-12-11 09:20:49 +00:00
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#define SPDK_BLOB_READ_ONLY (1ULL << 0)
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#define SPDK_BLOB_DATA_RO_FLAGS_MASK SPDK_BLOB_READ_ONLY
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2017-11-21 23:10:28 +00:00
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#define SPDK_BLOB_MD_RO_FLAGS_MASK 0
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2017-12-04 11:38:13 +00:00
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#define spdk_blob_is_thin_provisioned(blob) (blob->invalid_flags & SPDK_BLOB_THIN_PROV)
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2017-11-21 23:10:28 +00:00
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struct spdk_blob_md_descriptor_flags {
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uint8_t type;
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uint32_t length;
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/*
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* If a flag in invalid_flags is set that the application is not aware of,
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* it will not allow the blob to be opened.
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*/
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uint64_t invalid_flags;
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/*
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* If a flag in data_ro_flags is set that the application is not aware of,
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* allow the blob to be opened in data_read_only and md_read_only mode.
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*/
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uint64_t data_ro_flags;
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/*
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* If a flag in md_ro_flags is set the the application is not aware of,
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* allow the blob to be opened in md_read_only mode.
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*/
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uint64_t md_ro_flags;
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};
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2017-03-20 18:26:50 +00:00
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struct spdk_blob_md_descriptor {
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uint8_t type;
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uint32_t length;
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};
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#define SPDK_INVALID_MD_PAGE UINT32_MAX
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struct spdk_blob_md_page {
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spdk_blob_id id;
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uint32_t sequence_num;
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uint32_t reserved0;
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/* Descriptors here */
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2017-03-28 23:17:54 +00:00
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uint8_t descriptors[4072];
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2017-03-20 18:26:50 +00:00
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uint32_t next;
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uint32_t crc;
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};
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2017-08-22 00:39:22 +00:00
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#define SPDK_BS_PAGE_SIZE 0x1000
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SPDK_STATIC_ASSERT(SPDK_BS_PAGE_SIZE == sizeof(struct spdk_blob_md_page), "Invalid md page size");
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2017-03-20 18:26:50 +00:00
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#define SPDK_BS_SUPER_BLOCK_SIG "SPDKBLOB"
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struct spdk_bs_super_block {
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uint8_t signature[8];
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uint32_t version;
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uint32_t length;
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uint32_t clean; /* If there was a clean shutdown, this is 1. */
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spdk_blob_id super_blob;
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uint32_t cluster_size; /* In bytes */
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uint32_t used_page_mask_start; /* Offset from beginning of disk, in pages */
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uint32_t used_page_mask_len; /* Count, in pages */
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uint32_t used_cluster_mask_start; /* Offset from beginning of disk, in pages */
|
|
|
|
uint32_t used_cluster_mask_len; /* Count, in pages */
|
|
|
|
|
|
|
|
uint32_t md_start; /* Offset from beginning of disk, in pages */
|
|
|
|
uint32_t md_len; /* Count, in pages */
|
|
|
|
|
2018-03-02 19:49:36 +00:00
|
|
|
struct spdk_bs_type bstype; /* blobstore type */
|
2017-09-27 13:03:23 +00:00
|
|
|
|
2017-12-12 22:19:46 +00:00
|
|
|
uint32_t used_blobid_mask_start; /* Offset from beginning of disk, in pages */
|
|
|
|
uint32_t used_blobid_mask_len; /* Count, in pages */
|
|
|
|
|
|
|
|
uint8_t reserved[4012];
|
2017-09-13 03:09:22 +00:00
|
|
|
uint32_t crc;
|
2017-03-20 18:26:50 +00:00
|
|
|
};
|
|
|
|
SPDK_STATIC_ASSERT(sizeof(struct spdk_bs_super_block) == 0x1000, "Invalid super block size");
|
|
|
|
|
|
|
|
#pragma pack(pop)
|
|
|
|
|
2018-01-29 17:24:04 +00:00
|
|
|
struct spdk_bs_dev *spdk_bs_create_zeroes_dev(void);
|
2018-01-29 16:03:21 +00:00
|
|
|
struct spdk_bs_dev *spdk_bs_create_blob_bs_dev(struct spdk_blob *blob);
|
2018-01-29 17:24:04 +00:00
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
/* Unit Conversions
|
|
|
|
*
|
|
|
|
* The blobstore works with several different units:
|
|
|
|
* - Byte: Self explanatory
|
|
|
|
* - LBA: The logical blocks on the backing storage device.
|
|
|
|
* - Page: The read/write units of blobs and metadata. This is
|
|
|
|
* an offset into a blob in units of 4KiB.
|
|
|
|
* - Cluster Index: The disk is broken into a sequential list of
|
|
|
|
* clusters. This is the offset from the beginning.
|
|
|
|
*
|
|
|
|
* NOTE: These conversions all act on simple magnitudes, not with any sort
|
|
|
|
* of knowledge about the blobs themselves. For instance, converting
|
|
|
|
* a page to an lba with the conversion function below simply converts
|
|
|
|
* a number of pages to an equivalent number of lbas, but that
|
|
|
|
* lba certainly isn't the right lba that corresponds to a page offset
|
|
|
|
* for a particular blob.
|
|
|
|
*/
|
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_byte_to_lba(struct spdk_blob_store *bs, uint64_t length)
|
|
|
|
{
|
|
|
|
assert(length % bs->dev->blocklen == 0);
|
|
|
|
|
|
|
|
return length / bs->dev->blocklen;
|
|
|
|
}
|
|
|
|
|
2018-01-30 12:32:03 +00:00
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_dev_byte_to_lba(struct spdk_bs_dev *bs_dev, uint64_t length)
|
|
|
|
{
|
|
|
|
assert(length % bs_dev->blocklen == 0);
|
|
|
|
|
|
|
|
return length / bs_dev->blocklen;
|
|
|
|
}
|
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_lba_to_byte(struct spdk_blob_store *bs, uint64_t lba)
|
|
|
|
{
|
|
|
|
return lba * bs->dev->blocklen;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_page_to_lba(struct spdk_blob_store *bs, uint64_t page)
|
|
|
|
{
|
2017-08-22 00:39:22 +00:00
|
|
|
return page * SPDK_BS_PAGE_SIZE / bs->dev->blocklen;
|
2017-03-20 18:26:50 +00:00
|
|
|
}
|
|
|
|
|
2018-01-30 12:32:03 +00:00
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_dev_page_to_lba(struct spdk_bs_dev *bs_dev, uint64_t page)
|
|
|
|
{
|
|
|
|
return page * SPDK_BS_PAGE_SIZE / bs_dev->blocklen;
|
|
|
|
}
|
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
static inline uint32_t
|
|
|
|
_spdk_bs_lba_to_page(struct spdk_blob_store *bs, uint64_t lba)
|
|
|
|
{
|
|
|
|
uint64_t lbas_per_page;
|
|
|
|
|
2017-08-22 00:39:22 +00:00
|
|
|
lbas_per_page = SPDK_BS_PAGE_SIZE / bs->dev->blocklen;
|
2017-03-20 18:26:50 +00:00
|
|
|
|
|
|
|
assert(lba % lbas_per_page == 0);
|
|
|
|
|
|
|
|
return lba / lbas_per_page;
|
|
|
|
}
|
|
|
|
|
2018-01-30 12:32:03 +00:00
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_dev_lba_to_page(struct spdk_bs_dev *bs_dev, uint64_t lba)
|
|
|
|
{
|
|
|
|
uint64_t lbas_per_page;
|
|
|
|
|
|
|
|
lbas_per_page = SPDK_BS_PAGE_SIZE / bs_dev->blocklen;
|
|
|
|
|
|
|
|
assert(lba % lbas_per_page == 0);
|
|
|
|
|
|
|
|
return lba / lbas_per_page;
|
|
|
|
}
|
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_cluster_to_page(struct spdk_blob_store *bs, uint32_t cluster)
|
|
|
|
{
|
|
|
|
return cluster * bs->pages_per_cluster;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline uint32_t
|
|
|
|
_spdk_bs_page_to_cluster(struct spdk_blob_store *bs, uint64_t page)
|
|
|
|
{
|
|
|
|
assert(page % bs->pages_per_cluster == 0);
|
|
|
|
|
|
|
|
return page / bs->pages_per_cluster;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline uint64_t
|
|
|
|
_spdk_bs_cluster_to_lba(struct spdk_blob_store *bs, uint32_t cluster)
|
|
|
|
{
|
|
|
|
return cluster * (bs->cluster_sz / bs->dev->blocklen);
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline uint32_t
|
|
|
|
_spdk_bs_lba_to_cluster(struct spdk_blob_store *bs, uint64_t lba)
|
|
|
|
{
|
|
|
|
assert(lba % (bs->cluster_sz / bs->dev->blocklen) == 0);
|
|
|
|
|
|
|
|
return lba / (bs->cluster_sz / bs->dev->blocklen);
|
|
|
|
}
|
|
|
|
|
2018-01-30 12:32:03 +00:00
|
|
|
static inline uint64_t
|
2018-02-20 18:14:12 +00:00
|
|
|
_spdk_bs_blob_lba_to_back_dev_lba(struct spdk_blob *blob, uint64_t lba)
|
2018-01-30 12:32:03 +00:00
|
|
|
{
|
|
|
|
return lba * blob->bs->dev->blocklen / blob->back_bs_dev->blocklen;
|
|
|
|
}
|
|
|
|
|
|
|
|
static inline uint64_t
|
2018-02-20 18:14:12 +00:00
|
|
|
_spdk_bs_blob_lba_from_back_dev_lba(struct spdk_blob *blob, uint64_t lba)
|
2018-01-30 12:32:03 +00:00
|
|
|
{
|
|
|
|
return lba * blob->back_bs_dev->blocklen / blob->bs->dev->blocklen;
|
|
|
|
}
|
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
/* End basic conversions */
|
|
|
|
|
|
|
|
static inline uint32_t
|
|
|
|
_spdk_bs_blobid_to_page(spdk_blob_id id)
|
|
|
|
{
|
|
|
|
return id & 0xFFFFFFFF;
|
|
|
|
}
|
|
|
|
|
2017-09-30 20:24:32 +00:00
|
|
|
/* The blob id is a 64 bit number. The lower 32 bits are the page_idx. The upper
|
|
|
|
* 32 bits are not currently used. Stick a 1 there just to catch bugs where the
|
|
|
|
* code assumes blob id == page_idx.
|
|
|
|
*/
|
|
|
|
static inline spdk_blob_id
|
|
|
|
_spdk_bs_page_to_blobid(uint32_t page_idx)
|
|
|
|
{
|
|
|
|
return SPDK_BLOB_BLOBID_HIGH_BIT | page_idx;
|
|
|
|
}
|
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
/* Given a page offset into a blob, look up the LBA for the
|
|
|
|
* start of that page.
|
|
|
|
*/
|
|
|
|
static inline uint64_t
|
2018-02-20 18:14:12 +00:00
|
|
|
_spdk_bs_blob_page_to_lba(struct spdk_blob *blob, uint32_t page)
|
2017-03-20 18:26:50 +00:00
|
|
|
{
|
|
|
|
uint64_t lba;
|
|
|
|
uint32_t pages_per_cluster;
|
|
|
|
|
|
|
|
pages_per_cluster = blob->bs->pages_per_cluster;
|
|
|
|
|
|
|
|
assert(page < blob->active.num_clusters * pages_per_cluster);
|
|
|
|
|
|
|
|
lba = blob->active.clusters[page / pages_per_cluster];
|
|
|
|
lba += _spdk_bs_page_to_lba(blob->bs, page % pages_per_cluster);
|
|
|
|
|
|
|
|
return lba;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Given a page offset into a blob, look up the number of pages until the
|
|
|
|
* next cluster boundary.
|
|
|
|
*/
|
|
|
|
static inline uint32_t
|
2018-02-20 18:14:12 +00:00
|
|
|
_spdk_bs_num_pages_to_cluster_boundary(struct spdk_blob *blob, uint32_t page)
|
2017-03-20 18:26:50 +00:00
|
|
|
{
|
|
|
|
uint32_t pages_per_cluster;
|
|
|
|
|
|
|
|
pages_per_cluster = blob->bs->pages_per_cluster;
|
|
|
|
|
|
|
|
return pages_per_cluster - (page % pages_per_cluster);
|
|
|
|
}
|
|
|
|
|
2018-01-30 12:32:03 +00:00
|
|
|
/* Given a page offset into a blob, look up the number of pages into blob to beginning of current cluster */
|
|
|
|
static inline uint32_t
|
2018-02-20 18:14:12 +00:00
|
|
|
_spdk_bs_page_to_cluster_start(struct spdk_blob *blob, uint32_t page)
|
2018-01-30 12:32:03 +00:00
|
|
|
{
|
|
|
|
uint32_t pages_per_cluster;
|
|
|
|
|
|
|
|
pages_per_cluster = blob->bs->pages_per_cluster;
|
|
|
|
|
|
|
|
return page - (page % pages_per_cluster);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Given a page offset into a blob, look up if it is from allocated cluster. */
|
|
|
|
static inline bool
|
2018-02-20 18:14:12 +00:00
|
|
|
_spdk_bs_page_is_allocated(struct spdk_blob *blob, uint32_t page)
|
2018-01-30 12:32:03 +00:00
|
|
|
{
|
|
|
|
uint64_t lba;
|
|
|
|
uint32_t pages_per_cluster;
|
|
|
|
|
|
|
|
pages_per_cluster = blob->bs->pages_per_cluster;
|
|
|
|
|
|
|
|
assert(page < blob->active.num_clusters * pages_per_cluster);
|
|
|
|
|
|
|
|
lba = blob->active.clusters[page / pages_per_cluster];
|
|
|
|
|
|
|
|
if (lba == 0) {
|
|
|
|
assert(spdk_blob_is_thin_provisioned(blob));
|
|
|
|
return false;
|
|
|
|
} else {
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2017-03-20 18:26:50 +00:00
|
|
|
#endif
|