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raid1: io path implementation

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* read/write io path for raid1

Signed-off-by: Krzysztof Smolinski <krzysztof.smolinski@intel.com>
Change-Id: I1d0321725faf668f72c41d62ec0c6a15113f2b93
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13445
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Community-CI: Mellanox Build Bot
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Shuhei Matsumoto <smatsumoto@nvidia.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Krzysztof Smolinski 2022-12-19 10:47:41 +01:00 committed by Tomasz Zawadzki
parent 208f21cdce
commit 985b7c1048
1 changed files with 121 additions and 1 deletions
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122
module/bdev/raid/raid1.c
View File

@ -5,6 +5,7 @@
#include "bdev_raid.h"
#include "spdk/likely.h"
#include "spdk/log.h"
struct raid1_info {
@ -12,10 +13,129 @@ struct raid1_info {
struct raid_bdev *raid_bdev;
};
static void
raid1_bdev_io_completion(struct spdk_bdev_io *bdev_io, bool success, void *cb_arg)
{
struct raid_bdev_io *raid_io = cb_arg;
spdk_bdev_free_io(bdev_io);
raid_bdev_io_complete_part(raid_io, 1, success ?
SPDK_BDEV_IO_STATUS_SUCCESS :
SPDK_BDEV_IO_STATUS_FAILED);
}
static void raid1_submit_rw_request(struct raid_bdev_io *raid_io);
static void
_raid1_submit_rw_request(void *_raid_io)
{
struct raid_bdev_io *raid_io = _raid_io;
raid1_submit_rw_request(raid_io);
}
static int
raid1_submit_read_request(struct raid_bdev_io *raid_io)
{
struct raid_bdev *raid_bdev = raid_io->raid_bdev;
struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(raid_io);
uint8_t ch_idx = 0;
struct raid_base_bdev_info *base_info = &raid_bdev->base_bdev_info[ch_idx];
struct spdk_io_channel *base_ch = raid_io->raid_ch->base_channel[ch_idx];
uint64_t pd_lba, pd_blocks;
int ret;
pd_lba = bdev_io->u.bdev.offset_blocks;
pd_blocks = bdev_io->u.bdev.num_blocks;
raid_io->base_bdev_io_remaining = 1;
ret = spdk_bdev_readv_blocks(base_info->desc, base_ch,
bdev_io->u.bdev.iovs, bdev_io->u.bdev.iovcnt,
pd_lba, pd_blocks,
raid1_bdev_io_completion, raid_io);
if (spdk_likely(ret == 0)) {
raid_io->base_bdev_io_submitted++;
} else if (spdk_unlikely(ret == -ENOMEM)) {
raid_bdev_queue_io_wait(raid_io, base_info->bdev, base_ch,
_raid1_submit_rw_request);
return 0;
}
return ret;
}
static int
raid1_submit_write_request(struct raid_bdev_io *raid_io)
{
struct raid_bdev *raid_bdev = raid_io->raid_bdev;
struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(raid_io);
struct raid_base_bdev_info *base_info;
struct spdk_io_channel *base_ch;
uint64_t pd_lba, pd_blocks;
uint16_t idx = raid_io->base_bdev_io_submitted;
uint64_t base_bdev_io_not_submitted;
int ret = 0;
pd_lba = bdev_io->u.bdev.offset_blocks;
pd_blocks = bdev_io->u.bdev.num_blocks;
if (raid_io->base_bdev_io_submitted == 0) {
raid_io->base_bdev_io_remaining = raid_bdev->num_base_bdevs;
}
for (; idx < raid_bdev->num_base_bdevs; idx++) {
base_info = &raid_bdev->base_bdev_info[idx];
base_ch = raid_io->raid_ch->base_channel[idx];
ret = spdk_bdev_writev_blocks(base_info->desc, base_ch,
bdev_io->u.bdev.iovs, bdev_io->u.bdev.iovcnt,
pd_lba, pd_blocks,
raid1_bdev_io_completion, raid_io);
if (spdk_unlikely(ret != 0)) {
if (spdk_unlikely(ret == -ENOMEM)) {
raid_bdev_queue_io_wait(raid_io, base_info->bdev, base_ch,
_raid1_submit_rw_request);
return 0;
}
base_bdev_io_not_submitted = raid_bdev->num_base_bdevs -
raid_io->base_bdev_io_submitted;
raid_bdev_io_complete_part(raid_io, base_bdev_io_not_submitted,
SPDK_BDEV_IO_STATUS_FAILED);
return 0;
}
raid_io->base_bdev_io_submitted++;
}
return ret;
}
static void
raid1_submit_rw_request(struct raid_bdev_io *raid_io)
{
raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
struct spdk_bdev_io *bdev_io = spdk_bdev_io_from_ctx(raid_io);
int ret;
switch (bdev_io->type) {
case SPDK_BDEV_IO_TYPE_READ:
ret = raid1_submit_read_request(raid_io);
break;
case SPDK_BDEV_IO_TYPE_WRITE:
ret = raid1_submit_write_request(raid_io);
break;
default:
ret = -EINVAL;
break;
}
if (spdk_unlikely(ret != 0)) {
raid_bdev_io_complete(raid_io, SPDK_BDEV_IO_STATUS_FAILED);
}
}
static int