f9d52c9ebd
This is the first step toward fixing the behavior of the lvol bdev module so that it handles spdk_bdev_unregister() correctly. Currently, when an lvol bdev is unregistered, this causes the associated lvol to be deleted; this isn't the desired behavior, since spdk_bdev_unregister() is just meant to drop the currently-exposed bdev, as in a hot-unplug event, not destroy the backing storage. The current implementation of the new destroy_lvol_bdev method still calls into the exsting (broken) spdk_bdev_unregister() path, but this at least lets us fix the existing delete_bdev RPC callers that really intended to destroy the lvol. The next step is to make vbdev_lvol_destroy() call spdk_lvol_destroy() instead of unregistering the bdev, which will require cleanup in the generic lvol layer to remove the close_only flag. Change-Id: Ic4cb51305d31f6d7366a82ba7bf7b19ebbcd3e9c Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-on: https://review.gerrithub.io/408084 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com>
121 lines
4.5 KiB
C
121 lines
4.5 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_VBDEV_LVOL_H
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#define SPDK_VBDEV_LVOL_H
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#include "spdk/lvol.h"
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#include "spdk_internal/bdev.h"
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#include "spdk_internal/lvolstore.h"
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struct lvol_store_bdev {
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struct spdk_lvol_store *lvs;
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struct spdk_bdev *bdev;
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struct spdk_lvs_req *req;
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TAILQ_ENTRY(lvol_store_bdev) lvol_stores;
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};
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int vbdev_lvs_create(struct spdk_bdev *base_bdev, const char *name, uint32_t cluster_sz,
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spdk_lvs_op_with_handle_complete cb_fn, void *cb_arg);
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void vbdev_lvs_destruct(struct spdk_lvol_store *lvs, spdk_lvs_op_complete cb_fn, void *cb_arg);
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void vbdev_lvs_unload(struct spdk_lvol_store *lvs, spdk_lvs_op_complete cb_fn, void *cb_arg);
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int vbdev_lvol_create(struct spdk_lvol_store *lvs, const char *name, uint64_t sz,
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bool thin_provisioned, spdk_lvol_op_with_handle_complete cb_fn, void *cb_arg);
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void vbdev_lvol_create_snapshot(struct spdk_lvol *lvol, const char *snapshot_name,
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spdk_lvol_op_with_handle_complete cb_fn, void *cb_arg);
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void vbdev_lvol_create_clone(struct spdk_lvol *lvol, const char *clone_name,
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spdk_lvol_op_with_handle_complete cb_fn, void *cb_arg);
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/**
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* \brief Change size of lvol
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* \param lvol Handle to lvol
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* \param sz Size of lvol to change
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* \param cb_fn Completion callback
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* \param cb_arg Completion callback custom arguments
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* \return error
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*/
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void vbdev_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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void vbdev_lvol_rename(struct spdk_lvol *lvol, const char *new_lvol_name,
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spdk_lvol_op_complete cb_fn, void *cb_arg);
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/**
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* Destroy a logical volume
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* \param lvol Handle to lvol
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* \param cb_fn Completion callback
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* \param cb_arg Completion callback custom arguments
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*/
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void vbdev_lvol_destroy(struct spdk_lvol *lvol, spdk_lvol_op_complete cb_fn, void *cb_arg);
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/**
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* \brief Renames given lvolstore.
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*
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* \param lvs Pointer to lvolstore
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* \param new_name New name of lvs
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* \param cb_fn Completion callback
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* \param cb_arg Completion callback custom arguments
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*/
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void vbdev_lvs_rename(struct spdk_lvol_store *lvs, const char *new_lvs_name,
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spdk_lvs_op_complete cb_fn, void *cb_arg);
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/**
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* \brief Search for handle lvolstore
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* \param uuid_str UUID of lvolstore
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* \return Handle to spdk_lvol_store or NULL if not found.
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*/
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struct spdk_lvol_store *vbdev_get_lvol_store_by_uuid(const char *uuid_str);
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/**
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* \brief Search for handle to lvolstore
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* \param name name of lvolstore
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* \return Handle to spdk_lvol_store or NULL if not found.
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*/
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struct spdk_lvol_store *vbdev_get_lvol_store_by_name(const char *name);
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/**
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* \brief Search for handle to lvol_store_bdev
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* \param lvs handle to lvolstore
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* \return Handle to lvol_store_bdev or NULL if not found.
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*/
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struct lvol_store_bdev *vbdev_get_lvs_bdev_by_lvs(struct spdk_lvol_store *lvs);
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struct spdk_lvol *vbdev_lvol_get_from_bdev(struct spdk_bdev *bdev);
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#endif /* SPDK_VBDEV_LVOL_H */
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