GPT: add GPT bdev support

Change-Id: I6a138e1c1d775e8c8bfeede9600f8b0f799ecdad
Signed-off-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-on: https://review.gerrithub.io/362445
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
This commit is contained in:
Ziye Yang 2017-06-01 13:02:54 +08:00 committed by Jim Harris
parent f8c1454824
commit 26d6770f1c
8 changed files with 929 additions and 2 deletions

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@ -44,7 +44,7 @@ C_SRCS-$(CONFIG_VTUNE) += vtune.c
LIBNAME = bdev LIBNAME = bdev
DIRS-y += error malloc null nvme rpc split DIRS-y += error gpt malloc null nvme rpc split
ifeq ($(OS),Linux) ifeq ($(OS),Linux)
DIRS-y += aio DIRS-y += aio

41
lib/bdev/gpt/Makefile Normal file
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@ -0,0 +1,41 @@
#
# 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.
#
SPDK_ROOT_DIR := $(abspath $(CURDIR)/../../..)
include $(SPDK_ROOT_DIR)/mk/spdk.common.mk
CFLAGS += $(ENV_CFLAGS) -I$(SPDK_ROOT_DIR)/lib/bdev/
C_SRCS = gpt.c vbdev_gpt.c
LIBNAME = vbdev_gpt
include $(SPDK_ROOT_DIR)/mk/spdk.lib.mk

271
lib/bdev/gpt/gpt.c Normal file
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@ -0,0 +1,271 @@
/*-
* 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.
*/
#include "spdk_internal/event.h"
#include "spdk_internal/bdev.h"
#include "gpt.h"
#include "spdk/event.h"
#include "spdk/endian.h"
#include "spdk/env.h"
#include "spdk/log.h"
#include "spdk/io_channel.h"
#define GPT_PRIMARY_PARTITION_TABLE_LBA 0x1
#define PRIMARY_PARTITION_NUMBER 4
#define GPT_PROTECTIVE_MBR 1
#define SPDK_MAX_NUM_PARTITION_ENTRIES 128
#define SPDK_GPT_CRC32C_POLYNOMIAL_REFLECT 0xedb88320UL
static uint32_t spdk_gpt_crc32_table[256];
__attribute__((constructor)) static void
spdk_gpt_init_crc32(void)
{
int i, j;
uint32_t val;
for (i = 0; i < 256; i++) {
val = i;
for (j = 0; j < 8; j++) {
if (val & 1) {
val = (val >> 1) ^ SPDK_GPT_CRC32C_POLYNOMIAL_REFLECT;
} else {
val = (val >> 1);
}
}
spdk_gpt_crc32_table[i] = val;
}
}
static uint32_t
spdk_gpt_crc32(const uint8_t *buf, uint32_t size, uint32_t seed)
{
uint32_t i, crc32 = seed;
for (i = 0; i < size; i++) {
crc32 = spdk_gpt_crc32_table[(crc32 ^ buf[i]) & 0xff] ^ (crc32 >> 8);
}
return crc32 ^ seed;
}
static int
spdk_gpt_read_partitions(struct spdk_gpt *gpt)
{
uint32_t total_partition_size, num_partition_entries, partition_entry_size;
uint64_t partition_start_lba;
struct spdk_gpt_header *head = gpt->header;
uint32_t crc32;
num_partition_entries = from_le32(&head->num_partition_entries);
if (num_partition_entries > SPDK_MAX_NUM_PARTITION_ENTRIES) {
SPDK_ERRLOG("Num_partition_entries=%u which exceeds max=%u\n",
num_partition_entries, SPDK_MAX_NUM_PARTITION_ENTRIES);
return -1;
}
partition_entry_size = from_le32(&head->size_of_partition_entry);
if (partition_entry_size != sizeof(struct spdk_gpt_partition_entry)) {
SPDK_ERRLOG("Partition_entry_size(%x) != expected(%lx)\n",
partition_entry_size, sizeof(struct spdk_gpt_partition_entry));
return -1;
}
total_partition_size = num_partition_entries * partition_entry_size;
partition_start_lba = from_le64(&head->partition_entry_lba);
if ((total_partition_size + partition_start_lba * gpt->sector_size) > SPDK_GPT_BUFFER_SIZE) {
SPDK_ERRLOG("Buffer size is not enough\n");
return -1;
}
gpt->partitions = (struct spdk_gpt_partition_entry *)(gpt->buf +
partition_start_lba * gpt->sector_size);
crc32 = spdk_gpt_crc32((uint8_t *)gpt->partitions, total_partition_size, ~0);
if (crc32 != from_le32(&head->partition_entry_array_crc32)) {
SPDK_ERRLOG("GPT partition entry array crc32 did not match\n");
return -1;
}
return 0;
}
static int
spdk_gpt_lba_range_check(struct spdk_gpt_header *head, uint64_t lba_end)
{
uint64_t usable_lba_start, usable_lba_end;
usable_lba_start = from_le64(&head->first_usable_lba);
usable_lba_end = from_le64(&head->last_usable_lba);
if (usable_lba_end < usable_lba_start) {
SPDK_ERRLOG("Head's usable_lba_end(%" PRIu64 ") < usable_lba_start(%" PRIu64 ")\n",
usable_lba_end, usable_lba_start);
return -1;
}
if (usable_lba_end > lba_end) {
SPDK_ERRLOG("Head's usable_lba_end(%" PRIu64 ") > lba_end(%" PRIu64 ")\n",
usable_lba_end, lba_end);
return -1;
}
if ((usable_lba_start < GPT_PRIMARY_PARTITION_TABLE_LBA) &&
(GPT_PRIMARY_PARTITION_TABLE_LBA < usable_lba_end)) {
SPDK_ERRLOG("Head lba is not in the usable range\n");
return -1;
}
return 0;
}
static int
spdk_gpt_read_header(struct spdk_gpt *gpt)
{
uint32_t head_size;
uint32_t new_crc, original_crc;
struct spdk_gpt_header *head;
head = (struct spdk_gpt_header *)(gpt->buf + GPT_PRIMARY_PARTITION_TABLE_LBA * gpt->sector_size);
head_size = from_le32(&head->header_size);
if (head_size < sizeof(*head) || head_size > gpt->sector_size) {
SPDK_ERRLOG("head_size=%u\n", head_size);
return -1;
}
original_crc = from_le32(&head->header_crc32);
head->header_crc32 = 0;
new_crc = spdk_gpt_crc32((uint8_t *)head, from_le32(&head->header_size), ~0);
/* restore header crc32 */
to_le32(&head->header_crc32, original_crc);
if (new_crc != original_crc) {
SPDK_ERRLOG("head crc32 does not match, provided=%u, caculated=%u\n",
original_crc, new_crc);
return -1;
}
if (memcmp(SPDK_GPT_SIGNATURE, head->gpt_signature,
sizeof(head->gpt_signature))) {
SPDK_ERRLOG("signature did not match\n");
return -1;
}
if (spdk_gpt_lba_range_check(head, gpt->lba_end)) {
SPDK_ERRLOG("lba range check error\n");
return -1;
}
gpt->header = head;
return 0;
}
static int
spdk_gpt_check_mbr(struct spdk_gpt *gpt)
{
int i, primary_partition = 0;
uint32_t total_lba_size = 0, ret = 0, expected_start_lba;
struct spdk_mbr *mbr;
mbr = (struct spdk_mbr *)gpt->buf;
if (from_le16(&mbr->mbr_signature) != SPDK_MBR_SIGNATURE) {
SPDK_ERRLOG("Signature mismatch, provided=%x, expected=%x\n", from_le16(&mbr->disk_signature),
SPDK_MBR_SIGNATURE);
return -1;
}
to_le32(&expected_start_lba, GPT_PRIMARY_PARTITION_TABLE_LBA);
if (mbr->partitions[0].start_lba != expected_start_lba) {
SPDK_ERRLOG("start lba mismatch, provided=%u, expected=%u\n",
mbr->partitions[0].start_lba, expected_start_lba);
return -1;
}
for (i = 0; i < PRIMARY_PARTITION_NUMBER; i++) {
if (mbr->partitions[i].os_type == SPDK_MBR_OS_TYPE_GPT_PROTECTIVE) {
primary_partition = i;
ret = GPT_PROTECTIVE_MBR;
break;
}
}
if (ret == GPT_PROTECTIVE_MBR) {
total_lba_size = from_le32(&mbr->partitions[primary_partition].size_lba);
if ((total_lba_size != ((uint32_t) gpt->total_sectors - 1)) &&
(total_lba_size != 0xFFFFFFFF)) {
SPDK_ERRLOG("GPT Primary MBR size does not equal: (record_size %u != actual_size %u)!\n",
total_lba_size, (uint32_t) gpt->total_sectors - 1);
return -1;
}
} else {
SPDK_ERRLOG("Currently only support GPT Protective MBR format\n");
return -1;
}
gpt->mbr = mbr;
return 0;
}
int
spdk_gpt_parse(struct spdk_gpt *gpt)
{
int rc;
if (!gpt || !gpt->buf) {
SPDK_ERRLOG("Gpt and the related buffer should not be NULL\n");
return -1;
}
rc = spdk_gpt_check_mbr(gpt);
if (rc) {
SPDK_ERRLOG("Failed to check mbr_info\n");
return rc;
}
rc = spdk_gpt_read_header(gpt);
if (rc) {
SPDK_ERRLOG("Failed to read gpt header\n");
return rc;
}
rc = spdk_gpt_read_partitions(gpt);
if (rc) {
SPDK_ERRLOG("Failed to read gpt partitions\n");
return rc;
}
return 0;
}

61
lib/bdev/gpt/gpt.h Normal file
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@ -0,0 +1,61 @@
/*-
* 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.
*/
/** \file
* GPT internal Interface
*/
#ifndef SPDK_INTERNAL_GPT_H
#define SPDK_INTERNAL_GPT_H
#include "spdk/gpt_spec.h"
#include "spdk/bdev.h"
#define SPDK_GPT_PART_TYPE_GUID SPDK_GPT_GUID(0x7c5222bd, 0x8f5d, 0x4087, 0x9c00, 0xbf9843c7b58c)
#define SPDK_GPT_BUFFER_SIZE 32768 /* 32KB */
#define SPDK_GPT_UUID_EQUAL(x,y) (memcmp(x, y, sizeof(struct spdk_gpt_guid)) == 0)
struct spdk_gpt {
unsigned char *buf;
uint64_t lba_start;
uint64_t lba_end;
uint64_t total_sectors;
uint32_t sector_size;
struct spdk_mbr *mbr;
struct spdk_gpt_header *header;
struct spdk_gpt_partition_entry *partitions;
};
int spdk_gpt_parse(struct spdk_gpt *gpt);
#endif /* SPDK_INTERNAL_GPT_H */

527
lib/bdev/gpt/vbdev_gpt.c Normal file
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@ -0,0 +1,527 @@
/*-
* 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.
*/
/*
* This driver reads a GPT partition table from a bdev and exposes a virtual block device for
* each partition.
*/
#include "spdk/stdinc.h"
#include "spdk/rpc.h"
#include "spdk/conf.h"
#include "spdk/endian.h"
#include "spdk/io_channel.h"
#include "spdk/env.h"
#include "spdk/string.h"
#include "spdk_internal/bdev.h"
#include "spdk_internal/log.h"
#include "gpt.h"
/* Base block device gpt context */
struct spdk_gpt_bdev {
struct spdk_bdev_desc *bdev_desc;
struct spdk_bdev *bdev;
struct spdk_gpt gpt;
struct spdk_io_channel *ch;
uint32_t ref;
};
/* Context for each gpt virtual bdev */
struct gpt_partition_disk {
struct spdk_bdev disk;
struct spdk_bdev *base_bdev;
struct spdk_gpt_bdev *gpt_base;
uint64_t offset_blocks;
uint64_t offset_bytes;
TAILQ_ENTRY(gpt_partition_disk) tailq;
};
static TAILQ_HEAD(, gpt_partition_disk) g_gpt_partition_disks = TAILQ_HEAD_INITIALIZER(
g_gpt_partition_disks);
static TAILQ_HEAD(, spdk_bdev) g_bdevs = TAILQ_HEAD_INITIALIZER(g_bdevs);
static int g_gpt_base_num;
static bool g_gpt_init_done;
static bool g_gpt_disabled;
static void
spdk_gpt_bdev_free(struct spdk_gpt_bdev *gpt_bdev)
{
if (!gpt_bdev) {
return;
}
if (gpt_bdev->ch) {
spdk_put_io_channel(gpt_bdev->ch);
}
spdk_dma_free(gpt_bdev->gpt.buf);
free(gpt_bdev);
}
static struct spdk_gpt_bdev *
spdk_gpt_base_bdev_init(struct spdk_bdev *bdev)
{
struct spdk_gpt_bdev *gpt_bdev;
struct spdk_gpt *gpt;
int rc;
gpt_bdev = calloc(1, sizeof(*gpt_bdev));
if (!gpt_bdev) {
SPDK_ERRLOG("Cannot alloc memory for gpt_bdev pointer\n");
return NULL;
}
gpt_bdev->bdev = bdev;
gpt_bdev->ref = 0;
gpt = &gpt_bdev->gpt;
gpt->buf = spdk_dma_zmalloc(SPDK_GPT_BUFFER_SIZE, 0x1000, NULL);
if (!gpt->buf) {
spdk_gpt_bdev_free(gpt_bdev);
SPDK_ERRLOG("Cannot alloc buf\n");
return NULL;
}
gpt->sector_size = bdev->blocklen;
gpt->total_sectors = bdev->blockcnt;
gpt->lba_start = 0;
gpt->lba_end = gpt->total_sectors - 1;
rc = spdk_bdev_open(gpt_bdev->bdev, false, NULL, NULL, &gpt_bdev->bdev_desc);
if (rc != 0) {
SPDK_ERRLOG("Could not open bdev %s, error=%d\n",
spdk_bdev_get_name(gpt_bdev->bdev), rc);
spdk_gpt_bdev_free(gpt_bdev);
return NULL;
}
gpt_bdev->ch = spdk_bdev_get_io_channel(gpt_bdev->bdev_desc);
if (!gpt_bdev->ch) {
SPDK_ERRLOG("Cannot allocate ch\n");
spdk_gpt_bdev_free(gpt_bdev);
return NULL;
}
return gpt_bdev;
}
static void
gpt_read(struct gpt_partition_disk *gpt_partition_disk, struct spdk_bdev_io *bdev_io)
{
bdev_io->u.read.offset += gpt_partition_disk->offset_bytes;
}
static void
gpt_write(struct gpt_partition_disk *gpt_partition_disk, struct spdk_bdev_io *bdev_io)
{
bdev_io->u.write.offset += gpt_partition_disk->offset_bytes;
}
static void
gpt_unmap(struct gpt_partition_disk *gpt_partition_disk, struct spdk_bdev_io *bdev_io)
{
uint16_t i;
uint64_t lba;
for (i = 0; i < bdev_io->u.unmap.bdesc_count; i++) {
lba = from_be64(&bdev_io->u.unmap.unmap_bdesc[i].lba);
lba += gpt_partition_disk->offset_blocks;
to_be64(&bdev_io->u.unmap.unmap_bdesc[i].lba, lba);
}
}
static void
gpt_flush(struct gpt_partition_disk *gpt_partition_disk, struct spdk_bdev_io *bdev_io)
{
bdev_io->u.flush.offset += gpt_partition_disk->offset_bytes;
}
static void
_vbdev_gpt_complete_reset(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
{
struct spdk_bdev_io *gpt_io = cb_arg;
struct spdk_io_channel *base_ch = *(struct spdk_io_channel **)gpt_io->driver_ctx;
spdk_put_io_channel(base_ch);
spdk_bdev_io_complete(gpt_io, success);
spdk_bdev_free_io(bdev_io);
}
static void
vbdev_gpt_submit_request(struct spdk_io_channel *ch, struct spdk_bdev_io *bdev_io)
{
struct gpt_partition_disk *gpt_partition_disk = bdev_io->bdev->ctxt;
struct spdk_io_channel *base_ch;
/* Modify the I/O to adjust for the offset within the base bdev. */
switch (bdev_io->type) {
case SPDK_BDEV_IO_TYPE_READ:
gpt_read(gpt_partition_disk, bdev_io);
break;
case SPDK_BDEV_IO_TYPE_WRITE:
gpt_write(gpt_partition_disk, bdev_io);
break;
case SPDK_BDEV_IO_TYPE_UNMAP:
gpt_unmap(gpt_partition_disk, bdev_io);
break;
case SPDK_BDEV_IO_TYPE_FLUSH:
gpt_flush(gpt_partition_disk, bdev_io);
break;
case SPDK_BDEV_IO_TYPE_RESET:
base_ch = spdk_get_io_channel(gpt_partition_disk->base_bdev);
*(struct spdk_io_channel **)bdev_io->driver_ctx = base_ch;
spdk_bdev_reset(gpt_partition_disk->base_bdev, base_ch,
_vbdev_gpt_complete_reset, bdev_io);
return;
default:
SPDK_ERRLOG("gpt: unknown I/O type %d\n", bdev_io->type);
spdk_bdev_io_complete(bdev_io, SPDK_BDEV_IO_STATUS_FAILED);
return;
}
/* Submit the modified I/O to the underlying bdev. */
spdk_bdev_io_resubmit(bdev_io, gpt_partition_disk->base_bdev);
}
static int
vbdev_gpt_base_get_ref(struct spdk_gpt_bdev *gpt_base,
struct gpt_partition_disk *gpt_partition_disk)
{
__sync_fetch_and_add(&gpt_base->ref, 1);
gpt_partition_disk->gpt_base = gpt_base;
return 0;
}
static void
vbdev_gpt_base_put_ref(struct spdk_gpt_bdev *gpt_base)
{
if (__sync_sub_and_fetch(&gpt_base->ref, 1) == 0) {
spdk_gpt_bdev_free(gpt_base);
}
}
static void
vbdev_gpt_free(struct gpt_partition_disk *gpt_partition_disk)
{
struct spdk_gpt_bdev *gpt_base;
if (!gpt_partition_disk) {
return;
}
gpt_base = gpt_partition_disk->gpt_base;
TAILQ_REMOVE(&g_gpt_partition_disks, gpt_partition_disk, tailq);
free(gpt_partition_disk->disk.name);
free(gpt_partition_disk);
assert(gpt_base != NULL);
vbdev_gpt_base_put_ref(gpt_base);
}
static int
vbdev_gpt_destruct(void *ctx)
{
struct gpt_partition_disk *gpt_partition_disk = ctx;
vbdev_gpt_free(gpt_partition_disk);
return 0;
}
static bool
vbdev_gpt_io_type_supported(void *ctx, enum spdk_bdev_io_type io_type)
{
struct gpt_partition_disk *gpt_partition_disk = ctx;
return gpt_partition_disk->base_bdev->fn_table->io_type_supported(gpt_partition_disk->base_bdev,
io_type);
}
static struct spdk_io_channel *
vbdev_gpt_get_io_channel(void *ctx)
{
struct gpt_partition_disk *gpt_partition_disk = ctx;
return gpt_partition_disk->base_bdev->fn_table->get_io_channel(gpt_partition_disk->base_bdev);
}
static int
vbdev_gpt_dump_config_json(void *ctx, struct spdk_json_write_ctx *w)
{
struct gpt_partition_disk *gpt_partition_disk = ctx;
spdk_json_write_name(w, "gpt");
spdk_json_write_object_begin(w);
spdk_json_write_name(w, "base_bdev");
spdk_json_write_string(w, spdk_bdev_get_name(gpt_partition_disk->base_bdev));
spdk_json_write_name(w, "offset_blocks");
spdk_json_write_uint64(w, gpt_partition_disk->offset_blocks);
spdk_json_write_object_end(w);
return 0;
}
static struct spdk_bdev_fn_table vbdev_gpt_fn_table = {
.destruct = vbdev_gpt_destruct,
.io_type_supported = vbdev_gpt_io_type_supported,
.submit_request = vbdev_gpt_submit_request,
.get_io_channel = vbdev_gpt_get_io_channel,
.dump_config_json = vbdev_gpt_dump_config_json,
};
static int
vbdev_gpt_create_bdevs(struct spdk_gpt_bdev *gpt_bdev)
{
uint32_t num_partition_entries;
uint64_t i, head_lba_start, head_lba_end;
struct spdk_gpt_partition_entry *p;
struct gpt_partition_disk *d;
struct spdk_bdev *base_bdev = gpt_bdev->bdev;
struct spdk_gpt *gpt;
int rc;
gpt = &gpt_bdev->gpt;
num_partition_entries = from_le32(&gpt->header->num_partition_entries);
head_lba_start = from_le64(&gpt->header->first_usable_lba);
head_lba_end = from_le64(&gpt->header->last_usable_lba);
for (i = 0; i < num_partition_entries; i++) {
p = &gpt->partitions[i];
uint64_t lba_start = from_le64(&p->starting_lba);
uint64_t lba_end = from_le64(&p->ending_lba);
if (!SPDK_GPT_UUID_EQUAL(&gpt->partitions[i].unique_partition_guid,
&SPDK_GPT_PART_TYPE_GUID) ||
lba_start == 0) {
continue;
}
if (lba_start < head_lba_start || lba_end > head_lba_end) {
continue;
}
d = calloc(1, sizeof(*d));
if (!d) {
SPDK_ERRLOG("Memory allocation failure\n");
return -1;
}
/* Copy properties of the base bdev */
d->disk.blocklen = base_bdev->blocklen;
d->disk.write_cache = base_bdev->write_cache;
d->disk.need_aligned_buffer = base_bdev->need_aligned_buffer;
d->disk.max_unmap_bdesc_count = base_bdev->max_unmap_bdesc_count;
/* index start at 1 instead of 0 to match the existing style */
d->disk.name = spdk_sprintf_alloc("%sp%" PRIu64, spdk_bdev_get_name(base_bdev), i + 1);
if (!d->disk.name) {
free(d);
SPDK_ERRLOG("Failed to allocate disk name\n");
return -1;
}
d->disk.product_name = "GPT Disk";
d->base_bdev = base_bdev;
d->offset_bytes = lba_start * gpt->sector_size;
d->offset_blocks = lba_start;
d->disk.blockcnt = lba_end - lba_start;
d->disk.ctxt = d;
d->disk.fn_table = &vbdev_gpt_fn_table;
SPDK_TRACELOG(SPDK_TRACE_VBDEV_GPT, "gpt vbdev %s: base bdev: %s offset_bytes: "
"%" PRIu64 " offset_blocks: %" PRIu64 "\n",
d->disk.name, spdk_bdev_get_name(base_bdev), d->offset_bytes, d->offset_blocks);
rc = vbdev_gpt_base_get_ref(gpt_bdev, d);
if (rc < 0) {
free(d);
return -1;
}
spdk_vbdev_register(&d->disk, &base_bdev, 1);
TAILQ_INSERT_TAIL(&g_gpt_partition_disks, d, tailq);
}
return 0;
}
static void
spdk_gpt_bdev_complete(struct spdk_bdev_io *bdev_io, bool status, void *arg)
{
struct spdk_gpt_bdev *gpt_bdev = (struct spdk_gpt_bdev *)arg;
static int bdev_init_num = 0;
int rc;
/* free the ch and also close the bdev_desc */
spdk_put_io_channel(gpt_bdev->ch);
gpt_bdev->ch = NULL;
spdk_bdev_close(gpt_bdev->bdev_desc);
gpt_bdev->bdev_desc = NULL;
bdev_init_num++;
if (status != SPDK_BDEV_IO_STATUS_SUCCESS) {
SPDK_ERRLOG("Gpt: bdev=%s io error status=%d\n",
spdk_bdev_get_name(gpt_bdev->bdev), status);
goto end;
}
rc = spdk_gpt_parse(&gpt_bdev->gpt);
if (rc) {
SPDK_TRACELOG(SPDK_TRACE_VBDEV_GPT, "Failed to parse gpt\n");
goto end;
}
rc = vbdev_gpt_create_bdevs(gpt_bdev);
if (rc < 0) {
SPDK_TRACELOG(SPDK_TRACE_VBDEV_GPT, "Failed to split dev=%s by gpt table\n",
spdk_bdev_get_name(gpt_bdev->bdev));
}
end:
spdk_bdev_free_io(bdev_io);
if (gpt_bdev->ref == 0) {
/* If no gpt_partition_disk instances were created, free the base context */
spdk_gpt_bdev_free(gpt_bdev);
}
if (!g_gpt_init_done) {
/* Call next vbdev module init after the last gpt creation */
if (bdev_init_num == g_gpt_base_num) {
g_gpt_init_done = true;
spdk_vbdev_module_init_next(0);
}
}
}
static int
vbdev_gpt_read_gpt(struct spdk_bdev *bdev)
{
struct spdk_gpt_bdev *gpt_bdev;
int rc;
gpt_bdev = spdk_gpt_base_bdev_init(bdev);
if (!gpt_bdev) {
SPDK_ERRLOG("Cannot allocated gpt_bdev\n");
return -1;
}
rc = spdk_bdev_read(gpt_bdev->bdev, gpt_bdev->ch, gpt_bdev->gpt.buf, 0, SPDK_GPT_BUFFER_SIZE,
spdk_gpt_bdev_complete, gpt_bdev);
if (rc < 0) {
spdk_gpt_bdev_free(gpt_bdev);
SPDK_ERRLOG("Failed to send bdev_io command\n");
return -1;
}
return 0;
}
static void
vbdev_gpt_init(void)
{
struct spdk_bdev *base_bdev, *tmp;
int rc = 0;
struct spdk_conf_section *sp = spdk_conf_find_section(NULL, "Gpt");
if (sp && spdk_conf_section_get_boolval(sp, "Disable", false)) {
/* Disable Gpt probe */
g_gpt_disabled = true;
goto end;
}
TAILQ_FOREACH_SAFE(base_bdev, &g_bdevs, link, tmp) {
TAILQ_REMOVE(&g_bdevs, base_bdev, link);
rc = vbdev_gpt_read_gpt(base_bdev);
if (rc) {
SPDK_ERRLOG("Failed to read info from bdev %s\n",
spdk_bdev_get_name(base_bdev));
continue;
}
g_gpt_base_num++;
}
if (!g_gpt_base_num) {
g_gpt_init_done = true;
}
end:
/* if no gpt bdev num is counted, just call vbdev_module_init_next */
if (!g_gpt_base_num) {
spdk_vbdev_module_init_next(rc);
}
}
static void
vbdev_gpt_fini(void)
{
struct gpt_partition_disk *gpt_partition_disk, *tmp;
TAILQ_FOREACH_SAFE(gpt_partition_disk, &g_gpt_partition_disks, tailq, tmp) {
vbdev_gpt_free(gpt_partition_disk);
}
}
static void
vbdev_gpt_register(struct spdk_bdev *bdev)
{
if (g_gpt_disabled) {
return;
}
if (!g_gpt_init_done) {
TAILQ_INSERT_TAIL(&g_bdevs, bdev, link);
}
}
static int
vbdev_gpt_get_ctx_size(void)
{
/*
* Note: this context is only used for RESET operations, since it is the only
* I/O type that does not just resubmit to the base bdev.
*/
return sizeof(struct spdk_io_channel *);
}
SPDK_VBDEV_MODULE_REGISTER(vbdev_gpt_init, vbdev_gpt_fini, NULL,
vbdev_gpt_get_ctx_size, vbdev_gpt_register)
SPDK_LOG_REGISTER_TRACE_FLAG("vbdev_gpt", SPDK_TRACE_VBDEV_GPT)

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@ -31,7 +31,7 @@
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# #
BLOCKDEV_MODULES_LIST = bdev_malloc bdev_null bdev_nvme nvme vbdev_error vbdev_split BLOCKDEV_MODULES_LIST = bdev_malloc bdev_null bdev_nvme nvme vbdev_error vbdev_gpt vbdev_split
ifeq ($(CONFIG_RDMA),y) ifeq ($(CONFIG_RDMA),y)
BLOCKDEV_MODULES_DEPS += -libverbs -lrdmacm BLOCKDEV_MODULES_DEPS += -libverbs -lrdmacm

View File

@ -32,6 +32,10 @@ config_params='--enable-debug --enable-werror'
export UBSAN_OPTIONS='halt_on_error=1:print_stacktrace=1:abort_on_error=1' export UBSAN_OPTIONS='halt_on_error=1:print_stacktrace=1:abort_on_error=1'
export SPDK_GPT_UUID=`grep SPDK_GPT_PART_TYPE_GUID $rootdir/lib/bdev/gpt/gpt.h \
| awk -F "(" '{ print $2}' | sed 's/)//g' \
| awk -F ", " '{ print $1 "-" $2 "-" $3 "-" $4 "-" $5}' | sed 's/0x//g'`
# Override the default NRHUGE in scripts/setup.sh # Override the default NRHUGE in scripts/setup.sh
export NRHUGE=4096 export NRHUGE=4096

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@ -17,6 +17,29 @@ timing_enter bounds
$testdir/bdevio/bdevio $testdir/bdev.conf $testdir/bdevio/bdevio $testdir/bdev.conf
timing_exit bounds timing_exit bounds
if [ $(uname -s) = Linux ] && [ -f /usr/sbin/sgdisk ]; then
echo "[Rpc]" >> $testdir/bdev.conf
echo " Enable Yes" >> $testdir/bdev.conf
if [ ! -z "`grep "Nvme0" $testdir/bdev.conf`" ]; then
modprobe nbd
$testdir/nbd/nbd -c $testdir/bdev.conf -b Nvme0n1 -n /dev/nbd0 &
nbd_pid=$!
echo "Process nbd pid: $nbd_pid"
waitforlisten $nbd_pid 5260
#if return 1, it will trap, so do not need to consider this case
waitforbdev Nvme0n1 $rootdir/scripts/rpc.py
if [ -e /dev/nbd0 ]; then
parted -s /dev/nbd0 mklabel gpt mkpart primary '0%' '50%' mkpart primary '50%' '100%'
#change the GUID to SPDK GUID value
/usr/sbin/sgdisk -u 1:$SPDK_GPT_UUID /dev/nbd0
/usr/sbin/sgdisk -u 2:$SPDK_GPT_UUID /dev/nbd0
fi
killprocess $nbd_pid
fi
fi
timing_enter verify timing_enter verify
$testdir/bdevperf/bdevperf -c $testdir/bdev.conf -q 32 -s 4096 -w verify -t 1 $testdir/bdevperf/bdevperf -c $testdir/bdev.conf -q 32 -s 4096 -w verify -t 1
timing_exit verify timing_exit verify