diff options
| -rw-r--r-- | block/iscsi.c | 426 | ||||
| -rwxr-xr-x | configure | 8 | ||||
| -rw-r--r-- | hw/scsi-bus.c | 4 | ||||
| -rw-r--r-- | hw/scsi-disk.c | 36 | ||||
| -rw-r--r-- | trace-events | 1 |
5 files changed, 331 insertions, 144 deletions
diff --git a/block/iscsi.c b/block/iscsi.c index deb3b68890..3d529213ff 100644 --- a/block/iscsi.c +++ b/block/iscsi.c @@ -60,8 +60,11 @@ typedef struct IscsiAIOCB { uint8_t *buf; int status; int canceled; + int retries; size_t read_size; size_t read_offset; + int64_t sector_num; + int nb_sectors; #ifdef __linux__ sg_io_hdr_t *ioh; #endif @@ -69,6 +72,7 @@ typedef struct IscsiAIOCB { #define NOP_INTERVAL 5000 #define MAX_NOP_FAILURES 3 +#define ISCSI_CMD_RETRIES 5 static void iscsi_bh_cb(void *p) @@ -191,6 +195,8 @@ iscsi_process_write(void *arg) iscsi_set_events(iscsilun); } +static int +iscsi_aio_writev_acb(IscsiAIOCB *acb); static void iscsi_aio_write16_cb(struct iscsi_context *iscsi, int status, @@ -208,7 +214,19 @@ iscsi_aio_write16_cb(struct iscsi_context *iscsi, int status, } acb->status = 0; - if (status < 0) { + if (status != 0) { + if (status == SCSI_STATUS_CHECK_CONDITION + && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION + && acb->retries-- > 0) { + if (acb->task != NULL) { + scsi_free_scsi_task(acb->task); + acb->task = NULL; + } + if (iscsi_aio_writev_acb(acb) == 0) { + iscsi_set_events(acb->iscsilun); + return; + } + } error_report("Failed to write16 data to iSCSI lun. %s", iscsi_get_error(iscsi)); acb->status = -EIO; @@ -222,15 +240,10 @@ static int64_t sector_qemu2lun(int64_t sector, IscsiLun *iscsilun) return sector * BDRV_SECTOR_SIZE / iscsilun->block_size; } -static BlockDriverAIOCB * -iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, - QEMUIOVector *qiov, int nb_sectors, - BlockDriverCompletionFunc *cb, - void *opaque) +static int +iscsi_aio_writev_acb(IscsiAIOCB *acb) { - IscsiLun *iscsilun = bs->opaque; - struct iscsi_context *iscsi = iscsilun->iscsi; - IscsiAIOCB *acb; + struct iscsi_context *iscsi = acb->iscsilun->iscsi; size_t size; uint32_t num_sectors; uint64_t lba; @@ -239,19 +252,13 @@ iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, #endif int ret; - acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); - trace_iscsi_aio_writev(iscsi, sector_num, nb_sectors, opaque, acb); - - acb->iscsilun = iscsilun; - acb->qiov = qiov; - acb->canceled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; acb->buf = NULL; /* this will allow us to get rid of 'buf' completely */ - size = nb_sectors * BDRV_SECTOR_SIZE; + size = acb->nb_sectors * BDRV_SECTOR_SIZE; #if !defined(LIBISCSI_FEATURE_IOVECTOR) data.size = MIN(size, acb->qiov->size); @@ -270,48 +277,76 @@ iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, if (acb->task == NULL) { error_report("iSCSI: Failed to allocate task for scsi WRITE16 " "command. %s", iscsi_get_error(iscsi)); - qemu_aio_release(acb); - return NULL; + return -1; } memset(acb->task, 0, sizeof(struct scsi_task)); acb->task->xfer_dir = SCSI_XFER_WRITE; acb->task->cdb_size = 16; acb->task->cdb[0] = 0x8a; - lba = sector_qemu2lun(sector_num, iscsilun); + lba = sector_qemu2lun(acb->sector_num, acb->iscsilun); *(uint32_t *)&acb->task->cdb[2] = htonl(lba >> 32); *(uint32_t *)&acb->task->cdb[6] = htonl(lba & 0xffffffff); - num_sectors = size / iscsilun->block_size; + num_sectors = size / acb->iscsilun->block_size; *(uint32_t *)&acb->task->cdb[10] = htonl(num_sectors); acb->task->expxferlen = size; #if defined(LIBISCSI_FEATURE_IOVECTOR) - ret = iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, + ret = iscsi_scsi_command_async(iscsi, acb->iscsilun->lun, acb->task, iscsi_aio_write16_cb, NULL, acb); #else - ret = iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, + ret = iscsi_scsi_command_async(iscsi, acb->iscsilun->lun, acb->task, iscsi_aio_write16_cb, &data, acb); #endif if (ret != 0) { - scsi_free_scsi_task(acb->task); g_free(acb->buf); - qemu_aio_release(acb); - return NULL; + return -1; } #if defined(LIBISCSI_FEATURE_IOVECTOR) scsi_task_set_iov_out(acb->task, (struct scsi_iovec*) acb->qiov->iov, acb->qiov->niov); #endif - iscsi_set_events(iscsilun); + return 0; +} + +static BlockDriverAIOCB * +iscsi_aio_writev(BlockDriverState *bs, int64_t sector_num, + QEMUIOVector *qiov, int nb_sectors, + BlockDriverCompletionFunc *cb, + void *opaque) +{ + IscsiLun *iscsilun = bs->opaque; + IscsiAIOCB *acb; + acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); + trace_iscsi_aio_writev(iscsilun->iscsi, sector_num, nb_sectors, opaque, acb); + + acb->iscsilun = iscsilun; + acb->qiov = qiov; + acb->nb_sectors = nb_sectors; + acb->sector_num = sector_num; + acb->retries = ISCSI_CMD_RETRIES; + + if (iscsi_aio_writev_acb(acb) != 0) { + if (acb->task) { + scsi_free_scsi_task(acb->task); + } + qemu_aio_release(acb); + return NULL; + } + + iscsi_set_events(iscsilun); return &acb->common; } +static int +iscsi_aio_readv_acb(IscsiAIOCB *acb); + static void iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, void *command_data, void *opaque) @@ -326,6 +361,18 @@ iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, acb->status = 0; if (status != 0) { + if (status == SCSI_STATUS_CHECK_CONDITION + && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION + && acb->retries-- > 0) { + if (acb->task != NULL) { + scsi_free_scsi_task(acb->task); + acb->task = NULL; + } + if (iscsi_aio_readv_acb(acb) == 0) { + iscsi_set_events(acb->iscsilun); + return; + } + } error_report("Failed to read16 data from iSCSI lun. %s", iscsi_get_error(iscsi)); acb->status = -EIO; @@ -334,35 +381,20 @@ iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status, iscsi_schedule_bh(acb); } -static BlockDriverAIOCB * -iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, - QEMUIOVector *qiov, int nb_sectors, - BlockDriverCompletionFunc *cb, - void *opaque) +static int +iscsi_aio_readv_acb(IscsiAIOCB *acb) { - IscsiLun *iscsilun = bs->opaque; - struct iscsi_context *iscsi = iscsilun->iscsi; - IscsiAIOCB *acb; - size_t qemu_read_size; + struct iscsi_context *iscsi = acb->iscsilun->iscsi; + uint64_t lba; + uint32_t num_sectors; + int ret; #if !defined(LIBISCSI_FEATURE_IOVECTOR) int i; #endif - int ret; - uint64_t lba; - uint32_t num_sectors; - - qemu_read_size = BDRV_SECTOR_SIZE * (size_t)nb_sectors; - - acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); - trace_iscsi_aio_readv(iscsi, sector_num, nb_sectors, opaque, acb); - - acb->iscsilun = iscsilun; - acb->qiov = qiov; acb->canceled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; - acb->read_size = qemu_read_size; acb->buf = NULL; /* If LUN blocksize is bigger than BDRV_BLOCK_SIZE a read from QEMU @@ -370,30 +402,29 @@ iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, * data. */ acb->read_offset = 0; - if (iscsilun->block_size > BDRV_SECTOR_SIZE) { - uint64_t bdrv_offset = BDRV_SECTOR_SIZE * sector_num; + if (acb->iscsilun->block_size > BDRV_SECTOR_SIZE) { + uint64_t bdrv_offset = BDRV_SECTOR_SIZE * acb->sector_num; - acb->read_offset = bdrv_offset % iscsilun->block_size; + acb->read_offset = bdrv_offset % acb->iscsilun->block_size; } - num_sectors = (qemu_read_size + iscsilun->block_size + num_sectors = (acb->read_size + acb->iscsilun->block_size + acb->read_offset - 1) - / iscsilun->block_size; + / acb->iscsilun->block_size; acb->task = malloc(sizeof(struct scsi_task)); if (acb->task == NULL) { error_report("iSCSI: Failed to allocate task for scsi READ16 " "command. %s", iscsi_get_error(iscsi)); - qemu_aio_release(acb); - return NULL; + return -1; } memset(acb->task, 0, sizeof(struct scsi_task)); acb->task->xfer_dir = SCSI_XFER_READ; - lba = sector_qemu2lun(sector_num, iscsilun); - acb->task->expxferlen = qemu_read_size; + lba = sector_qemu2lun(acb->sector_num, acb->iscsilun); + acb->task->expxferlen = acb->read_size; - switch (iscsilun->type) { + switch (acb->iscsilun->type) { case TYPE_DISK: acb->task->cdb_size = 16; acb->task->cdb[0] = 0x88; @@ -409,14 +440,12 @@ iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, break; } - ret = iscsi_scsi_command_async(iscsi, iscsilun->lun, acb->task, + ret = iscsi_scsi_command_async(iscsi, acb->iscsilun->lun, acb->task, iscsi_aio_read16_cb, NULL, acb); if (ret != 0) { - scsi_free_scsi_task(acb->task); - qemu_aio_release(acb); - return NULL; + return -1; } #if defined(LIBISCSI_FEATURE_IOVECTOR) @@ -428,12 +457,42 @@ iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, acb->qiov->iov[i].iov_base); } #endif + return 0; +} - iscsi_set_events(iscsilun); +static BlockDriverAIOCB * +iscsi_aio_readv(BlockDriverState *bs, int64_t sector_num, + QEMUIOVector *qiov, int nb_sectors, + BlockDriverCompletionFunc *cb, + void *opaque) +{ + IscsiLun *iscsilun = bs->opaque; + IscsiAIOCB *acb; + acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); + trace_iscsi_aio_readv(iscsilun->iscsi, sector_num, nb_sectors, opaque, acb); + + acb->nb_sectors = nb_sectors; + acb->sector_num = sector_num; + acb->iscsilun = iscsilun; + acb->qiov = qiov; + acb->read_size = BDRV_SECTOR_SIZE * (size_t)acb->nb_sectors; + acb->retries = ISCSI_CMD_RETRIES; + + if (iscsi_aio_readv_acb(acb) != 0) { + if (acb->task) { + scsi_free_scsi_task(acb->task); + } + qemu_aio_release(acb); + return NULL; + } + + iscsi_set_events(iscsilun); return &acb->common; } +static int +iscsi_aio_flush_acb(IscsiAIOCB *acb); static void iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, @@ -446,7 +505,19 @@ iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, } acb->status = 0; - if (status < 0) { + if (status != 0) { + if (status == SCSI_STATUS_CHECK_CONDITION + && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION + && acb->retries-- > 0) { + if (acb->task != NULL) { + scsi_free_scsi_task(acb->task); + acb->task = NULL; + } + if (iscsi_aio_flush_acb(acb) == 0) { + iscsi_set_events(acb->iscsilun); + return; + } + } error_report("Failed to sync10 data on iSCSI lun. %s", iscsi_get_error(iscsi)); acb->status = -EIO; @@ -455,29 +526,43 @@ iscsi_synccache10_cb(struct iscsi_context *iscsi, int status, iscsi_schedule_bh(acb); } -static BlockDriverAIOCB * -iscsi_aio_flush(BlockDriverState *bs, - BlockDriverCompletionFunc *cb, void *opaque) +static int +iscsi_aio_flush_acb(IscsiAIOCB *acb) { - IscsiLun *iscsilun = bs->opaque; - struct iscsi_context *iscsi = iscsilun->iscsi; - IscsiAIOCB *acb; - - acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); + struct iscsi_context *iscsi = acb->iscsilun->iscsi; - acb->iscsilun = iscsilun; acb->canceled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; acb->buf = NULL; - acb->task = iscsi_synchronizecache10_task(iscsi, iscsilun->lun, + acb->task = iscsi_synchronizecache10_task(iscsi, acb->iscsilun->lun, 0, 0, 0, 0, iscsi_synccache10_cb, acb); if (acb->task == NULL) { error_report("iSCSI: Failed to send synchronizecache10 command. %s", iscsi_get_error(iscsi)); + return -1; + } + + return 0; +} + +static BlockDriverAIOCB * +iscsi_aio_flush(BlockDriverState *bs, + BlockDriverCompletionFunc *cb, void *opaque) +{ + IscsiLun *iscsilun = bs->opaque; + + IscsiAIOCB *acb; + + acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); + + acb->iscsilun = iscsilun; + acb->retries = ISCSI_CMD_RETRIES; + + if (iscsi_aio_flush_acb(acb) != 0) { qemu_aio_release(acb); return NULL; } @@ -487,6 +572,8 @@ iscsi_aio_flush(BlockDriverState *bs, return &acb->common; } +static int iscsi_aio_discard_acb(IscsiAIOCB *acb); + static void iscsi_unmap_cb(struct iscsi_context *iscsi, int status, void *command_data, void *opaque) @@ -498,7 +585,19 @@ iscsi_unmap_cb(struct iscsi_context *iscsi, int status, } acb->status = 0; - if (status < 0) { + if (status != 0) { + if (status == SCSI_STATUS_CHECK_CONDITION + && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION + && acb->retries-- > 0) { + if (acb->task != NULL) { + scsi_free_scsi_task(acb->task); + acb->task = NULL; + } + if (iscsi_aio_discard_acb(acb) == 0) { + iscsi_set_events(acb->iscsilun); + return; + } + } error_report("Failed to unmap data on iSCSI lun. %s", iscsi_get_error(iscsi)); acb->status = -EIO; @@ -507,34 +606,50 @@ iscsi_unmap_cb(struct iscsi_context *iscsi, int status, iscsi_schedule_bh(acb); } -static BlockDriverAIOCB * -iscsi_aio_discard(BlockDriverState *bs, - int64_t sector_num, int nb_sectors, - BlockDriverCompletionFunc *cb, void *opaque) -{ - IscsiLun *iscsilun = bs->opaque; - struct iscsi_context *iscsi = iscsilun->iscsi; - IscsiAIOCB *acb; +static int iscsi_aio_discard_acb(IscsiAIOCB *acb) { + struct iscsi_context *iscsi = acb->iscsilun->iscsi; struct unmap_list list[1]; - acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); - - acb->iscsilun = iscsilun; acb->canceled = 0; acb->bh = NULL; acb->status = -EINPROGRESS; acb->buf = NULL; - list[0].lba = sector_qemu2lun(sector_num, iscsilun); - list[0].num = nb_sectors * BDRV_SECTOR_SIZE / iscsilun->block_size; + list[0].lba = sector_qemu2lun(acb->sector_num, acb->iscsilun); + list[0].num = acb->nb_sectors * BDRV_SECTOR_SIZE / acb->iscsilun->block_size; - acb->task = iscsi_unmap_task(iscsi, iscsilun->lun, + acb->task = iscsi_unmap_task(iscsi, acb->iscsilun->lun, 0, 0, &list[0], 1, iscsi_unmap_cb, acb); if (acb->task == NULL) { error_report("iSCSI: Failed to send unmap command. %s", iscsi_get_error(iscsi)); + return -1; + } + + return 0; +} + +static BlockDriverAIOCB * +iscsi_aio_discard(BlockDriverState *bs, + int64_t sector_num, int nb_sectors, + BlockDriverCompletionFunc *cb, void *opaque) +{ + IscsiLun *iscsilun = bs->opaque; + IscsiAIOCB *acb; + + acb = qemu_aio_get(&iscsi_aiocb_info, bs, cb, opaque); + + acb->iscsilun = iscsilun; + acb->nb_sectors = nb_sectors; + acb->sector_num = sector_num; + acb->retries = ISCSI_CMD_RETRIES; + + if (iscsi_aio_discard_acb(acb) != 0) { + if (acb->task) { + scsi_free_scsi_task(acb->task); + } qemu_aio_release(acb); return NULL; } @@ -823,6 +938,71 @@ static void iscsi_nop_timed_event(void *opaque) } #endif +static int iscsi_readcapacity_sync(IscsiLun *iscsilun) +{ + struct scsi_task *task = NULL; + struct scsi_readcapacity10 *rc10 = NULL; + struct scsi_readcapacity16 *rc16 = NULL; + int ret = 0; + int retries = ISCSI_CMD_RETRIES; + +try_again: + switch (iscsilun->type) { + case TYPE_DISK: + task = iscsi_readcapacity16_sync(iscsilun->iscsi, iscsilun->lun); + if (task == NULL || task->status != SCSI_STATUS_GOOD) { + if (task != NULL && task->status == SCSI_STATUS_CHECK_CONDITION + && task->sense.key == SCSI_SENSE_UNIT_ATTENTION + && retries-- > 0) { + scsi_free_scsi_task(task); + goto try_again; + } + error_report("iSCSI: failed to send readcapacity16 command."); + ret = -EINVAL; + goto out; + } + rc16 = scsi_datain_unmarshall(task); + if (rc16 == NULL) { + error_report("iSCSI: Failed to unmarshall readcapacity16 data."); + ret = -EINVAL; + goto out; + } + iscsilun->block_size = rc16->block_length; + iscsilun->num_blocks = rc16->returned_lba + 1; + break; + case TYPE_ROM: + task = iscsi_readcapacity10_sync(iscsilun->iscsi, iscsilun->lun, 0, 0); + if (task == NULL || task->status != SCSI_STATUS_GOOD) { + error_report("iSCSI: failed to send readcapacity10 command."); + ret = -EINVAL; + goto out; + } + rc10 = scsi_datain_unmarshall(task); + if (rc10 == NULL) { + error_report("iSCSI: Failed to unmarshall readcapacity10 data."); + ret = -EINVAL; + goto out; + } + iscsilun->block_size = rc10->block_size; + if (rc10->lba == 0) { + /* blank disk loaded */ + iscsilun->num_blocks = 0; + } else { + iscsilun->num_blocks = rc10->lba + 1; + } + break; + default: + break; + } + +out: + if (task) { + scsi_free_scsi_task(task); + } + + return ret; +} + /* * We support iscsi url's on the form * iscsi://[<username>%<password>@]<host>[:<port>]/<targetname>/<lun> @@ -834,8 +1014,6 @@ static int iscsi_open(BlockDriverState *bs, const char *filename, int flags) struct iscsi_url *iscsi_url = NULL; struct scsi_task *task = NULL; struct scsi_inquiry_standard *inq = NULL; - struct scsi_readcapacity10 *rc10 = NULL; - struct scsi_readcapacity16 *rc16 = NULL; char *initiator_name = NULL; int ret; @@ -925,50 +1103,9 @@ static int iscsi_open(BlockDriverState *bs, const char *filename, int flags) iscsilun->type = inq->periperal_device_type; - scsi_free_scsi_task(task); - - switch (iscsilun->type) { - case TYPE_DISK: - task = iscsi_readcapacity16_sync(iscsi, iscsilun->lun); - if (task == NULL || task->status != SCSI_STATUS_GOOD) { - error_report("iSCSI: failed to send readcapacity16 command."); - ret = -EINVAL; - goto out; - } - rc16 = scsi_datain_unmarshall(task); - if (rc16 == NULL) { - error_report("iSCSI: Failed to unmarshall readcapacity16 data."); - ret = -EINVAL; - goto out; - } - iscsilun->block_size = rc16->block_length; - iscsilun->num_blocks = rc16->returned_lba + 1; - break; - case TYPE_ROM: - task = iscsi_readcapacity10_sync(iscsi, iscsilun->lun, 0, 0); - if (task == NULL || task->status != SCSI_STATUS_GOOD) { - error_report("iSCSI: failed to send readcapacity10 command."); - ret = -EINVAL; - goto out; - } - rc10 = scsi_datain_unmarshall(task); - if (rc10 == NULL) { - error_report("iSCSI: Failed to unmarshall readcapacity10 data."); - ret = -EINVAL; - goto out; - } - iscsilun->block_size = rc10->block_size; - if (rc10->lba == 0) { - /* blank disk loaded */ - iscsilun->num_blocks = 0; - } else { - iscsilun->num_blocks = rc10->lba + 1; - } - break; - default: - break; + if ((ret = iscsi_readcapacity_sync(iscsilun)) != 0) { + goto out; } - bs->total_sectors = iscsilun->num_blocks * iscsilun->block_size / BDRV_SECTOR_SIZE ; @@ -981,8 +1118,6 @@ static int iscsi_open(BlockDriverState *bs, const char *filename, int flags) bs->sg = 1; } - ret = 0; - #if defined(LIBISCSI_FEATURE_NOP_COUNTER) /* Set up a timer for sending out iSCSI NOPs */ iscsilun->nop_timer = qemu_new_timer_ms(rt_clock, iscsi_nop_timed_event, iscsilun); @@ -1023,6 +1158,26 @@ static void iscsi_close(BlockDriverState *bs) memset(iscsilun, 0, sizeof(IscsiLun)); } +static int iscsi_truncate(BlockDriverState *bs, int64_t offset) +{ + IscsiLun *iscsilun = bs->opaque; + int ret = 0; + + if (iscsilun->type != TYPE_DISK) { + return -ENOTSUP; + } + + if ((ret = iscsi_readcapacity_sync(iscsilun)) != 0) { + return ret; + } + + if (offset > iscsi_getlength(bs)) { + return -EINVAL; + } + + return 0; +} + static int iscsi_has_zero_init(BlockDriverState *bs) { return 0; @@ -1093,6 +1248,7 @@ static BlockDriver bdrv_iscsi = { .create_options = iscsi_create_options, .bdrv_getlength = iscsi_getlength, + .bdrv_truncate = iscsi_truncate, .bdrv_aio_readv = iscsi_aio_readv, .bdrv_aio_writev = iscsi_aio_writev, @@ -2803,7 +2803,13 @@ if test "$libiscsi" != "no" ; then #include <iscsi/iscsi.h> int main(void) { iscsi_unmap_sync(NULL,0,0,0,NULL,0); return 0; } EOF - if compile_prog "" "-liscsi" ; then + if $pkg_config --atleast-version=1.7.0 libiscsi --modversion >/dev/null 2>&1; then + libiscsi="yes" + libiscsi_cflags=$($pkg_config --cflags libiscsi 2>/dev/null) + libiscsi_libs=$($pkg_config --libs libiscsi 2>/dev/null) + CFLAGS="$CFLAGS $libiscsi_cflags" + LIBS="$LIBS $libiscsi_libs" + elif compile_prog "" "-liscsi" ; then libiscsi="yes" LIBS="$LIBS -liscsi" else diff --git a/hw/scsi-bus.c b/hw/scsi-bus.c index a97f1cdc1c..01e1dec4ca 100644 --- a/hw/scsi-bus.c +++ b/hw/scsi-bus.c @@ -1508,6 +1508,10 @@ void scsi_req_unref(SCSIRequest *req) will start the next chunk or complete the command. */ void scsi_req_continue(SCSIRequest *req) { + if (req->io_canceled) { + trace_scsi_req_continue_canceled(req->dev->id, req->lun, req->tag); + return; + } trace_scsi_req_continue(req->dev->id, req->lun, req->tag); if (req->cmd.mode == SCSI_XFER_TO_DEV) { req->ops->write_data(req); diff --git a/hw/scsi-disk.c b/hw/scsi-disk.c index d41158693e..4a0673c0bf 100644 --- a/hw/scsi-disk.c +++ b/hw/scsi-disk.c @@ -178,6 +178,9 @@ static void scsi_aio_complete(void *opaque, int ret) assert(r->req.aiocb != NULL); r->req.aiocb = NULL; bdrv_acct_done(s->qdev.conf.bs, &r->acct); + if (r->req.io_canceled) { + goto done; + } if (ret < 0) { if (scsi_handle_rw_error(r, -ret)) { @@ -223,6 +226,10 @@ static void scsi_write_do_fua(SCSIDiskReq *r) { SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, r->req.dev); + if (r->req.io_canceled) { + goto done; + } + if (scsi_is_cmd_fua(&r->req.cmd)) { bdrv_acct_start(s->qdev.conf.bs, &r->acct, 0, BDRV_ACCT_FLUSH); r->req.aiocb = bdrv_aio_flush(s->qdev.conf.bs, scsi_aio_complete, r); @@ -230,6 +237,8 @@ static void scsi_write_do_fua(SCSIDiskReq *r) } scsi_req_complete(&r->req, GOOD); + +done: if (!r->req.io_canceled) { scsi_req_unref(&r->req); } @@ -243,6 +252,9 @@ static void scsi_dma_complete(void *opaque, int ret) assert(r->req.aiocb != NULL); r->req.aiocb = NULL; bdrv_acct_done(s->qdev.conf.bs, &r->acct); + if (r->req.io_canceled) { + goto done; + } if (ret < 0) { if (scsi_handle_rw_error(r, -ret)) { @@ -274,6 +286,9 @@ static void scsi_read_complete(void * opaque, int ret) assert(r->req.aiocb != NULL); r->req.aiocb = NULL; bdrv_acct_done(s->qdev.conf.bs, &r->acct); + if (r->req.io_canceled) { + goto done; + } if (ret < 0) { if (scsi_handle_rw_error(r, -ret)) { @@ -305,6 +320,9 @@ static void scsi_do_read(void *opaque, int ret) r->req.aiocb = NULL; bdrv_acct_done(s->qdev.conf.bs, &r->acct); } + if (r->req.io_canceled) { + goto done; + } if (ret < 0) { if (scsi_handle_rw_error(r, -ret)) { @@ -312,10 +330,6 @@ static void scsi_do_read(void *opaque, int ret) } } - if (r->req.io_canceled) { - return; - } - /* The request is used as the AIO opaque value, so add a ref. */ scsi_req_ref(&r->req); @@ -423,6 +437,9 @@ static void scsi_write_complete(void * opaque, int ret) r->req.aiocb = NULL; bdrv_acct_done(s->qdev.conf.bs, &r->acct); } + if (r->req.io_canceled) { + goto done; + } if (ret < 0) { if (scsi_handle_rw_error(r, -ret)) { @@ -1478,13 +1495,17 @@ static void scsi_unmap_complete(void *opaque, int ret) uint32_t nb_sectors; r->req.aiocb = NULL; + if (r->req.io_canceled) { + goto done; + } + if (ret < 0) { if (scsi_handle_rw_error(r, -ret)) { goto done; } } - if (data->count > 0 && !r->req.io_canceled) { + if (data->count > 0) { sector_num = ldq_be_p(&data->inbuf[0]); nb_sectors = ldl_be_p(&data->inbuf[8]) & 0xffffffffULL; if (!check_lba_range(s, sector_num, nb_sectors)) { @@ -1501,10 +1522,9 @@ static void scsi_unmap_complete(void *opaque, int ret) return; } + scsi_req_complete(&r->req, GOOD); + done: - if (data->count == 0) { - scsi_req_complete(&r->req, GOOD); - } if (!r->req.io_canceled) { scsi_req_unref(&r->req); } diff --git a/trace-events b/trace-events index a27ae43032..3064fc7767 100644 --- a/trace-events +++ b/trace-events @@ -460,6 +460,7 @@ scsi_req_data(int target, int lun, int tag, int len) "target %d lun %d tag %d le scsi_req_data_canceled(int target, int lun, int tag, int len) "target %d lun %d tag %d len %d" scsi_req_dequeue(int target, int lun, int tag) "target %d lun %d tag %d" scsi_req_continue(int target, int lun, int tag) "target %d lun %d tag %d" +scsi_req_continue_canceled(int target, int lun, int tag) "target %d lun %d tag %d" scsi_req_parsed(int target, int lun, int tag, int cmd, int mode, int xfer) "target %d lun %d tag %d command %d dir %d length %d" scsi_req_parsed_lba(int target, int lun, int tag, int cmd, uint64_t lba) "target %d lun %d tag %d command %d lba %"PRIu64 scsi_req_parse_bad(int target, int lun, int tag, int cmd) "target %d lun %d tag %d command %d" |