Пример #1
0
static void
iscsi_aio_read16_cb(struct iscsi_context *iscsi, int status,
                    void *command_data, void *opaque)
{
    IscsiAIOCB *acb = opaque;

    trace_iscsi_aio_read16_cb(iscsi, status, acb, acb->canceled);

    if (acb->canceled != 0) {
        return;
    }

    acb->status = 0;
    if (status != 0) {
        if (status == SCSI_STATUS_CHECK_CONDITION
            && acb->task->sense.key == SCSI_SENSE_UNIT_ATTENTION
            && acb->retries-- > 0) {
            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;
    }

    iscsi_schedule_bh(acb);
}
Пример #2
0
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;

    if (!is_request_lun_aligned(sector_num, nb_sectors, iscsilun)) {
        return NULL;
    }

    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->retries     = ISCSI_CMD_RETRIES;

    if (iscsi_aio_readv_acb(acb) != 0) {
        qemu_aio_release(acb);
        return NULL;
    }

    iscsi_set_events(iscsilun);
    return &acb->common;
}
Пример #3
0
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;
}