0d9a2b504a
We have to process only the first call of destroy_raid_bdev RPC for the same RAID bdev. The existing flag destruct_called cannot be used for that purpose because of the following reason. destruct_called is set to true in both of - destroy_raid_bdev RPC - hot removal of any base bdev. If destruct_called is set in destroy_raid_bdev RPC, destroy_raid_bdev RPC must return immediately, but if destruct_called is set in hot removal of any base bdev, destroy_raid_bdev RPC must go forward with the current logic. Hence add another flag destroy_started to struct raid_bdev and use it. Change-Id: Ifeefcaa1d289499342d8bb9bc162ded65e0368dd Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/450885 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
234 lines
7.7 KiB
C
234 lines
7.7 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright (c) Intel Corporation.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef SPDK_BDEV_RAID_INTERNAL_H
|
|
#define SPDK_BDEV_RAID_INTERNAL_H
|
|
|
|
#include "spdk/bdev_module.h"
|
|
|
|
/*
|
|
* Raid state describes the state of the raid. This raid bdev can be either in
|
|
* configured list or configuring list
|
|
*/
|
|
enum raid_bdev_state {
|
|
/* raid bdev is ready and is seen by upper layers */
|
|
RAID_BDEV_STATE_ONLINE,
|
|
|
|
/*
|
|
* raid bdev is configuring, not all underlying bdevs are present.
|
|
* And can't be seen by upper layers.
|
|
*/
|
|
RAID_BDEV_STATE_CONFIGURING,
|
|
|
|
/*
|
|
* In offline state, raid bdev layer will complete all incoming commands without
|
|
* submitting to underlying base nvme bdevs
|
|
*/
|
|
RAID_BDEV_STATE_OFFLINE,
|
|
|
|
/* raid bdev max, new states should be added before this */
|
|
RAID_BDEV_MAX
|
|
};
|
|
|
|
/*
|
|
* raid_base_bdev_info contains information for the base bdevs which are part of some
|
|
* raid. This structure contains the per base bdev information. Whatever is
|
|
* required per base device for raid bdev will be kept here
|
|
*/
|
|
struct raid_base_bdev_info {
|
|
/* pointer to base spdk bdev */
|
|
struct spdk_bdev *bdev;
|
|
|
|
/* pointer to base bdev descriptor opened by raid bdev */
|
|
struct spdk_bdev_desc *desc;
|
|
|
|
/*
|
|
* When underlying base device calls the hot plug function on drive removal,
|
|
* this flag will be set and later after doing some processing, base device
|
|
* descriptor will be closed
|
|
*/
|
|
bool remove_scheduled;
|
|
};
|
|
|
|
/*
|
|
* raid_bdev is the single entity structure which contains SPDK block device
|
|
* and the information related to any raid bdev either configured or
|
|
* in configuring list. io device is created on this.
|
|
*/
|
|
struct raid_bdev {
|
|
/* raid bdev device, this will get registered in bdev layer */
|
|
struct spdk_bdev bdev;
|
|
|
|
/* link of raid bdev to link it to configured, configuring or offline list */
|
|
TAILQ_ENTRY(raid_bdev) state_link;
|
|
|
|
/* link of raid bdev to link it to global raid bdev list */
|
|
TAILQ_ENTRY(raid_bdev) global_link;
|
|
|
|
/* pointer to config file entry */
|
|
struct raid_bdev_config *config;
|
|
|
|
/* array of base bdev info */
|
|
struct raid_base_bdev_info *base_bdev_info;
|
|
|
|
/* strip size of raid bdev in blocks */
|
|
uint32_t strip_size;
|
|
|
|
/* strip size of raid bdev in KB */
|
|
uint32_t strip_size_kb;
|
|
|
|
/* strip size bit shift for optimized calculation */
|
|
uint32_t strip_size_shift;
|
|
|
|
/* block length bit shift for optimized calculation */
|
|
uint32_t blocklen_shift;
|
|
|
|
/* state of raid bdev */
|
|
enum raid_bdev_state state;
|
|
|
|
/* number of base bdevs comprising raid bdev */
|
|
uint16_t num_base_bdevs;
|
|
|
|
/* number of base bdevs discovered */
|
|
uint16_t num_base_bdevs_discovered;
|
|
|
|
/* Raid Level of this raid bdev */
|
|
uint8_t raid_level;
|
|
|
|
/* Set to true if destruct is called for this raid bdev */
|
|
bool destruct_called;
|
|
|
|
/* Set to true if destroy of this raid bdev is started. */
|
|
bool destroy_started;
|
|
};
|
|
|
|
/*
|
|
* raid_bdev_io is the context part of bdev_io. It contains the information
|
|
* related to bdev_io for a raid bdev
|
|
*/
|
|
struct raid_bdev_io {
|
|
/* WaitQ entry, used only in waitq logic */
|
|
struct spdk_bdev_io_wait_entry waitq_entry;
|
|
|
|
/* Original channel for this IO, used in queuing logic */
|
|
struct spdk_io_channel *ch;
|
|
|
|
/* Used for tracking progress on io requests sent to member disks. */
|
|
uint8_t base_bdev_io_submitted;
|
|
uint8_t base_bdev_io_completed;
|
|
uint8_t base_bdev_io_expected;
|
|
uint8_t base_bdev_io_status;
|
|
};
|
|
|
|
/*
|
|
* raid_base_bdev_config is the per base bdev data structure which contains
|
|
* information w.r.t to per base bdev during parsing config
|
|
*/
|
|
struct raid_base_bdev_config {
|
|
/* base bdev name from config file */
|
|
char *name;
|
|
};
|
|
|
|
/*
|
|
* raid_bdev_config contains the raid bdev config related information after
|
|
* parsing the config file
|
|
*/
|
|
struct raid_bdev_config {
|
|
/* base bdev config per underlying bdev */
|
|
struct raid_base_bdev_config *base_bdev;
|
|
|
|
/* Points to already created raid bdev */
|
|
struct raid_bdev *raid_bdev;
|
|
|
|
char *name;
|
|
|
|
/* strip size of this raid bdev in kilo bytes */
|
|
uint32_t strip_size;
|
|
|
|
/* number of base bdevs */
|
|
uint8_t num_base_bdevs;
|
|
|
|
/* raid level */
|
|
uint8_t raid_level;
|
|
|
|
TAILQ_ENTRY(raid_bdev_config) link;
|
|
};
|
|
|
|
/*
|
|
* raid_config is the top level structure representing the raid bdev config as read
|
|
* from config file for all raids
|
|
*/
|
|
struct raid_config {
|
|
/* raid bdev context from config file */
|
|
TAILQ_HEAD(, raid_bdev_config) raid_bdev_config_head;
|
|
|
|
/* total raid bdev from config file */
|
|
uint8_t total_raid_bdev;
|
|
};
|
|
|
|
/*
|
|
* raid_bdev_io_channel is the context of spdk_io_channel for raid bdev device. It
|
|
* contains the relationship of raid bdev io channel with base bdev io channels.
|
|
*/
|
|
struct raid_bdev_io_channel {
|
|
/* Array of IO channels of base bdevs */
|
|
struct spdk_io_channel **base_channel;
|
|
};
|
|
|
|
/* TAIL heads for various raid bdev lists */
|
|
TAILQ_HEAD(raid_configured_tailq, raid_bdev);
|
|
TAILQ_HEAD(raid_configuring_tailq, raid_bdev);
|
|
TAILQ_HEAD(raid_all_tailq, raid_bdev);
|
|
TAILQ_HEAD(raid_offline_tailq, raid_bdev);
|
|
|
|
extern struct raid_configured_tailq g_raid_bdev_configured_list;
|
|
extern struct raid_configuring_tailq g_raid_bdev_configuring_list;
|
|
extern struct raid_all_tailq g_raid_bdev_list;
|
|
extern struct raid_offline_tailq g_raid_bdev_offline_list;
|
|
extern struct raid_config g_raid_config;
|
|
|
|
typedef void (*raid_bdev_destruct_cb)(void *cb_ctx, int rc);
|
|
|
|
int raid_bdev_create(struct raid_bdev_config *raid_cfg);
|
|
int raid_bdev_add_base_devices(struct raid_bdev_config *raid_cfg);
|
|
void raid_bdev_remove_base_devices(struct raid_bdev_config *raid_cfg,
|
|
raid_bdev_destruct_cb cb_fn, void *cb_ctx);
|
|
int raid_bdev_config_add(const char *raid_name, int strip_size, int num_base_bdevs,
|
|
int raid_level, struct raid_bdev_config **_raid_cfg);
|
|
int raid_bdev_config_add_base_bdev(struct raid_bdev_config *raid_cfg,
|
|
const char *base_bdev_name, uint32_t slot);
|
|
void raid_bdev_config_cleanup(struct raid_bdev_config *raid_cfg);
|
|
struct raid_bdev_config *raid_bdev_config_find_by_name(const char *raid_name);
|
|
|
|
#endif /* SPDK_BDEV_RAID_INTERNAL_H */
|