1738488e41
Since base device doesn't require VSS, FTL introduces a mechanism that will allow for recovering both the P2L and write pointer of open bands after a dirty shutdown. After writing 1MiB of data to a band, a 4KiB block describing the P2L will be persisted to cache device, effectively emulating VSS for the base device. Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Signed-off-by: Kozlowski Mateusz <mateusz.kozlowski@intel.com> Change-Id: Ic6be52dc09b237297a5cda3e752d6c038e98b70e Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13367 Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com>
122 lines
2.6 KiB
C
122 lines
2.6 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*/
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#include "ftl_core.h"
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#include "ftl_mngt.h"
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#include "ftl_mngt_steps.h"
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/*
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* Steps executed during clean shutdown - includes persisting metadata and rolling
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* back any setup steps executed during startup (closing bdevs, io channels, etc)
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*/
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static const struct ftl_mngt_process_desc desc_shutdown = {
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.name = "FTL shutdown",
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.error_handler = ftl_mngt_rollback_device,
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.steps = {
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{
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.name = "Deinit core IO channel",
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.action = ftl_mngt_deinit_io_channel
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},
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{
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.name = "Unregister IO device",
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.action = ftl_mngt_unregister_io_device
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},
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{
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.name = "Stop core poller",
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.action = ftl_mngt_stop_core_poller
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},
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{
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.name = "Persist L2P",
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.action = ftl_mngt_persist_l2p
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},
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{
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.name = "Persist metadata",
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.action = ftl_mngt_persist_md
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},
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{
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.name = "Set FTL clean state",
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.action = ftl_mngt_set_clean
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},
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{
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.name = "Dump statistics",
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.action = ftl_mngt_dump_stats
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},
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{
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.name = "Deinitialize L2P",
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.action = ftl_mngt_deinit_l2p
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},
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{
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.name = "Deinitialize P2L checkpointing",
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.action = ftl_mngt_p2l_deinit_ckpt
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},
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{
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.name = "Rollback FTL device",
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.action = ftl_mngt_rollback_device
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},
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{}
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}
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};
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/*
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* Steps executed during fast clean shutdown (shutting down to shared memory). Utilizes
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* minimum amount of metadata persistence and rolls back any setup steps executed during
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* startup (closing bdevs, io channels, etc)
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*/
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static const struct ftl_mngt_process_desc desc_fast_shutdown = {
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.name = "FTL fast shutdown",
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.steps = {
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{
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.name = "Deinit core IO channel",
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.action = ftl_mngt_deinit_io_channel
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},
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{
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.name = "Unregister IO device",
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.action = ftl_mngt_unregister_io_device
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},
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{
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.name = "Stop core poller",
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.action = ftl_mngt_stop_core_poller
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},
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{
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.name = "Fast persist metadata",
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.action = ftl_mngt_fast_persist_md
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},
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{
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.name = "Set FTL SHM clean state",
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.action = ftl_mngt_set_shm_clean
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},
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{
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.name = "Dump statistics",
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.action = ftl_mngt_dump_stats
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},
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{
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.name = "Deinitialize L2P",
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.action = ftl_mngt_deinit_l2p
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},
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{
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.name = "Deinitialize P2L checkpointing",
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.action = ftl_mngt_p2l_deinit_ckpt
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},
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{
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.name = "Rollback FTL device",
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.action = ftl_mngt_rollback_device
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},
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{}
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}
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};
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int
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ftl_mngt_call_dev_shutdown(struct spdk_ftl_dev *dev, ftl_mngt_completion cb, void *cb_cntx)
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{
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const struct ftl_mngt_process_desc *pdesc;
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if (dev->conf.fast_shutdown) {
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pdesc = &desc_fast_shutdown;
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} else {
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pdesc = &desc_shutdown;
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}
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return ftl_mngt_process_execute(dev, pdesc, cb, cb_cntx);
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}
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