2b768821bf
The function just needs to zero out metadata so that the blobstore is effectively destroyed. If the user wants to unmap the rest of the disk after the blobstore is destroyed, they are free to do so. On future initializations of blobstores the code will do the unmapping, so performance is not impacted. While here, implement the zeroing using the new write_zeroes functionality instead of allocating a buffer full of zeroes. Change-Id: I7f18be0fd5e13a48b171ab3f4d5f5e12876023bc Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/390307 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
122 lines
3.7 KiB
C
122 lines
3.7 KiB
C
/*-
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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_INTERNAL_LVOLSTORE_H
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#define SPDK_INTERNAL_LVOLSTORE_H
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#include "spdk/blob.h"
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#include "spdk/lvol.h"
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#include "spdk_internal/bdev.h"
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#include <uuid/uuid.h>
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/* Default size of blobstore cluster */
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#define SPDK_LVS_OPTS_CLUSTER_SZ (1024 * 1024 * 1024)
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/* Length of string returned from uuid_unparse() */
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#define UUID_STRING_LEN 37
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struct spdk_lvs_req {
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spdk_lvs_op_complete cb_fn;
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void *cb_arg;
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};
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struct spdk_lvol_req {
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spdk_lvol_op_complete cb_fn;
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void *cb_arg;
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struct spdk_lvol *lvol;
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};
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struct spdk_lvs_with_handle_req {
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spdk_lvs_op_with_handle_complete cb_fn;
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void *cb_arg;
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struct spdk_lvol_store *lvol_store;
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struct spdk_bs_dev *bs_dev;
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struct spdk_bdev *base_bdev;
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int lvserrno;
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};
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struct spdk_lvs_destroy_req {
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spdk_lvs_op_complete cb_fn;
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void *cb_arg;
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struct spdk_lvol_store *lvs;
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};
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struct spdk_lvol_with_handle_req {
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spdk_lvol_op_with_handle_complete cb_fn;
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void *cb_arg;
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struct spdk_lvol *lvol;
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};
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struct spdk_lvol_store {
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struct spdk_bs_dev *bs_dev;
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struct spdk_blob_store *blobstore;
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struct spdk_blob *super_blob;
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spdk_blob_id super_blob_id;
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uuid_t uuid;
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struct spdk_lvs_req *destruct_req;
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int lvol_count;
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int lvols_opened;
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bool destruct;
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TAILQ_HEAD(, spdk_lvol) lvols;
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bool on_list;
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TAILQ_ENTRY(spdk_lvol_store) link;
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char name[SPDK_LVS_NAME_MAX];
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};
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struct spdk_lvol {
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struct spdk_lvol_store *lvol_store;
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struct spdk_blob *blob;
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uint64_t num_clusters;
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spdk_blob_id blob_id;
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char *old_name;
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char name[SPDK_LVOL_NAME_MAX];
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bool close_only;
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struct spdk_bdev *bdev;
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int ref_count;
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bool action_in_progress;
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TAILQ_ENTRY(spdk_lvol) link;
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};
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struct lvol_task {
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enum spdk_bdev_io_status status;
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};
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struct lvol_store_bdev *vbdev_lvol_store_first(void);
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struct lvol_store_bdev *vbdev_lvol_store_next(struct lvol_store_bdev *prev);
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int spdk_lvol_resize(struct spdk_lvol *lvol, uint64_t sz, spdk_lvol_op_complete cb_fn,
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void *cb_arg);
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#endif /* SPDK_INTERNAL_LVOLSTORE_H */
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