/*
- * scsi generic sg v3 io engine
+ * sg engine
+ *
+ * IO engine that uses the Linux SG v3 interface to talk to SCSI devices
*
*/
#include <stdio.h>
#include <sys/poll.h>
#include "../fio.h"
-#include "../os.h"
#ifdef FIO_HAVE_SGIO
+#define MAX_10B_LBA 0xFFFFFFFFULL
+#define SCSI_TIMEOUT_MS 30000 // 30 second timeout; currently no method to override
+#define MAX_SB 64 // sense block maximum return size
+
struct sgio_cmd {
- unsigned char cdb[10];
+ unsigned char cdb[16]; // enhanced from 10 to support 16 byte commands
+ unsigned char sb[MAX_SB]; // add sense block to commands
int nr;
};
int *fd_flags;
void *sgbuf;
unsigned int bs;
+ int type_checked;
};
static void sgio_hdr_init(struct sgio_data *sd, struct sg_io_hdr *hdr,
hdr->interface_id = 'S';
hdr->cmdp = sc->cdb;
hdr->cmd_len = sizeof(sc->cdb);
+ hdr->sbp = sc->sb;
+ hdr->mx_sb_len = sizeof(sc->sb);
hdr->pack_id = io_u->index;
hdr->usr_ptr = io_u;
}
}
-static int fio_sgio_ioctl_getevents(struct thread_data *td, int fio_unused min,
- int max, struct timespec fio_unused *t)
-{
- assert(max <= 1);
-
- /*
- * we can only have one finished io_u for sync io, since the depth
- * is always 1
- */
- if (list_empty(&td->io_u_busylist))
- return 0;
-
- return 1;
-}
-
static int pollin_events(struct pollfd *pfds, int fds)
{
int i;
return 0;
}
-static int fio_sgio_getevents(struct thread_data *td, int min, int max,
- struct timespec fio_unused *t)
+static int sg_fd_read(int fd, void *data, size_t size)
{
- /*
- * normally hard coding &td->files[0] is a bug that needs to be fixed,
- * but it's ok here as all files should point to the same device.
- */
- struct fio_file *f = &td->files[0];
- struct sgio_data *sd = td->io_ops->data;
- int left = max, ret, events, i, r = 0;
+ int err = 0;
+
+ while (size) {
+ ssize_t ret;
+
+ ret = read(fd, data, size);
+ if (ret < 0) {
+ if (errno == EAGAIN || errno == EINTR)
+ continue;
+ err = errno;
+ break;
+ } else if (!ret)
+ break;
+ else {
+ data += ret;
+ size -= ret;
+ }
+ }
+
+ if (err)
+ return err;
+ if (size)
+ return EAGAIN;
+
+ return 0;
+}
+
+static int fio_sgio_getevents(struct thread_data *td, unsigned int min,
+ unsigned int max,
+ const struct timespec fio_unused *t)
+{
+ struct sgio_data *sd = td->io_ops_data;
+ int left = max, eventNum, ret, r = 0;
void *buf = sd->sgbuf;
+ unsigned int i, events;
+ struct fio_file *f;
/*
* Fill in the file descriptors
/*
* don't block for min events == 0
*/
- if (!min) {
- sd->fd_flags[i] = fcntl(f->fd, F_GETFL);
- fcntl(f->fd, F_SETFL, sd->fd_flags[i] | O_NONBLOCK);
- }
+ if (!min)
+ sd->fd_flags[i] = fio_set_fd_nonblocking(f->fd, "sg");
+ else
+ sd->fd_flags[i] = -1;
+
sd->pfds[i].fd = f->fd;
sd->pfds[i].events = POLLIN;
}
while (left) {
void *p;
+ dprint(FD_IO, "sgio_getevents: sd %p: left=%d\n", sd, left);
+
do {
if (!min)
break;
- ret = poll(sd->pfds, td->nr_files, -1);
+ ret = poll(sd->pfds, td->o.nr_files, -1);
if (ret < 0) {
- td_verror(td, errno);
if (!r)
- r = -1;
+ r = -errno;
+ td_verror(td, errno, "poll");
break;
} else if (!ret)
continue;
- if (pollin_events(sd->pfds, td->nr_files))
+ if (pollin_events(sd->pfds, td->o.nr_files))
break;
} while (1);
p = buf;
events = 0;
for_each_file(td, f, i) {
- ret = read(f->fd, p, left * sizeof(struct sg_io_hdr));
- if (ret < 0) {
- if (errno == EAGAIN)
- continue;
- td_verror(td, errno);
- r = -1;
- break;
- } else if (ret) {
- p += ret;
- events += ret / sizeof(struct sg_io_hdr);
+ for (eventNum = 0; eventNum < left; eventNum++) {
+ ret = sg_fd_read(f->fd, p, sizeof(struct sg_io_hdr));
+ dprint(FD_IO, "sgio_getevents: ret: %d\n", ret);
+ if (ret) {
+ r = -ret;
+ td_verror(td, r, "sg_read");
+ break;
+ }
+ p += sizeof(struct sg_io_hdr);
+ events++;
+ dprint(FD_IO, "sgio_getevents: events: %d\n", events);
}
}
- if (r < 0)
+ if (r < 0 && !events)
break;
if (!events) {
usleep(1000);
for (i = 0; i < events; i++) {
struct sg_io_hdr *hdr = (struct sg_io_hdr *) buf + i;
-
sd->events[i] = hdr->usr_ptr;
+
+ /* record if an io error occurred, ignore resid */
+ if (hdr->info & SG_INFO_CHECK) {
+ struct io_u *io_u;
+ io_u = (struct io_u *)(hdr->usr_ptr);
+ memcpy((void*)&(io_u->hdr), (void*)hdr, sizeof(struct sg_io_hdr));
+ sd->events[i]->error = EIO;
+ }
}
}
if (!min) {
- for_each_file(td, f, i)
- fcntl(f->fd, F_SETFL, sd->fd_flags[i]);
+ for_each_file(td, f, i) {
+ if (sd->fd_flags[i] == -1)
+ continue;
+
+ if (fcntl(f->fd, F_SETFL, sd->fd_flags[i]) < 0)
+ log_err("fio: sg failed to restore fcntl flags: %s\n", strerror(errno));
+ }
}
return r;
static int fio_sgio_ioctl_doio(struct thread_data *td,
struct fio_file *f, struct io_u *io_u)
{
- struct sgio_data *sd = td->io_ops->data;
+ struct sgio_data *sd = td->io_ops_data;
struct sg_io_hdr *hdr = &io_u->hdr;
+ int ret;
sd->events[0] = io_u;
- return ioctl(f->fd, SG_IO, hdr);
+ ret = ioctl(f->fd, SG_IO, hdr);
+ if (ret < 0)
+ return ret;
+
+ /* record if an io error occurred */
+ if (hdr->info & SG_INFO_CHECK)
+ io_u->error = EIO;
+
+ return FIO_Q_COMPLETED;
}
-static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int sync)
+static int fio_sgio_rw_doio(struct fio_file *f, struct io_u *io_u, int do_sync)
{
struct sg_io_hdr *hdr = &io_u->hdr;
int ret;
ret = write(f->fd, hdr, sizeof(*hdr));
if (ret < 0)
- return errno;
+ return ret;
- if (sync) {
+ if (do_sync) {
ret = read(f->fd, hdr, sizeof(*hdr));
if (ret < 0)
- return errno;
+ return ret;
+
+ /* record if an io error occurred */
+ if (hdr->info & SG_INFO_CHECK)
+ io_u->error = EIO;
+
+ return FIO_Q_COMPLETED;
}
- return 0;
+ return FIO_Q_QUEUED;
}
-static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int sync)
+static int fio_sgio_doio(struct thread_data *td, struct io_u *io_u, int do_sync)
{
struct fio_file *f = io_u->file;
+ int ret;
- if (td->filetype == FIO_TYPE_BD)
- return fio_sgio_ioctl_doio(td, f, io_u);
+ if (f->filetype == FIO_TYPE_BLOCK) {
+ ret = fio_sgio_ioctl_doio(td, f, io_u);
+ td->error = io_u->error;
+ } else {
+ ret = fio_sgio_rw_doio(f, io_u, do_sync);
+ if (do_sync)
+ td->error = io_u->error;
+ }
- return fio_sgio_rw_doio(f, io_u, sync);
+ return ret;
}
static int fio_sgio_prep(struct thread_data *td, struct io_u *io_u)
{
struct sg_io_hdr *hdr = &io_u->hdr;
- struct sgio_data *sd = td->io_ops->data;
- int nr_blocks, lba;
+ struct sgio_data *sd = td->io_ops_data;
+ long long nr_blocks, lba;
if (io_u->xfer_buflen & (sd->bs - 1)) {
log_err("read/write not sector aligned\n");
return EINVAL;
}
+ nr_blocks = io_u->xfer_buflen / sd->bs;
+ lba = io_u->offset / sd->bs;
+
if (io_u->ddir == DDIR_READ) {
sgio_hdr_init(sd, hdr, io_u, 1);
hdr->dxfer_direction = SG_DXFER_FROM_DEV;
- hdr->cmdp[0] = 0x28;
+ if (lba < MAX_10B_LBA)
+ hdr->cmdp[0] = 0x28; // read(10)
+ else
+ hdr->cmdp[0] = 0x88; // read(16)
} else if (io_u->ddir == DDIR_WRITE) {
sgio_hdr_init(sd, hdr, io_u, 1);
hdr->dxfer_direction = SG_DXFER_TO_DEV;
- hdr->cmdp[0] = 0x2a;
+ if (lba < MAX_10B_LBA)
+ hdr->cmdp[0] = 0x2a; // write(10)
+ else
+ hdr->cmdp[0] = 0x8a; // write(16)
} else {
sgio_hdr_init(sd, hdr, io_u, 0);
-
hdr->dxfer_direction = SG_DXFER_NONE;
- hdr->cmdp[0] = 0x35;
+ if (lba < MAX_10B_LBA)
+ hdr->cmdp[0] = 0x35; // synccache(10)
+ else
+ hdr->cmdp[0] = 0x91; // synccache(16)
}
+ /*
+ * for synccache, we leave lba and length to 0 to sync all
+ * blocks on medium.
+ */
if (hdr->dxfer_direction != SG_DXFER_NONE) {
- nr_blocks = io_u->xfer_buflen / sd->bs;
- lba = io_u->offset / sd->bs;
- hdr->cmdp[2] = (unsigned char) ((lba >> 24) & 0xff);
- hdr->cmdp[3] = (unsigned char) ((lba >> 16) & 0xff);
- hdr->cmdp[4] = (unsigned char) ((lba >> 8) & 0xff);
- hdr->cmdp[5] = (unsigned char) (lba & 0xff);
- hdr->cmdp[7] = (unsigned char) ((nr_blocks >> 8) & 0xff);
- hdr->cmdp[8] = (unsigned char) (nr_blocks & 0xff);
+ if (lba < MAX_10B_LBA) {
+ hdr->cmdp[2] = (unsigned char) ((lba >> 24) & 0xff);
+ hdr->cmdp[3] = (unsigned char) ((lba >> 16) & 0xff);
+ hdr->cmdp[4] = (unsigned char) ((lba >> 8) & 0xff);
+ hdr->cmdp[5] = (unsigned char) (lba & 0xff);
+ hdr->cmdp[7] = (unsigned char) ((nr_blocks >> 8) & 0xff);
+ hdr->cmdp[8] = (unsigned char) (nr_blocks & 0xff);
+ } else {
+ hdr->cmdp[2] = (unsigned char) ((lba >> 56) & 0xff);
+ hdr->cmdp[3] = (unsigned char) ((lba >> 48) & 0xff);
+ hdr->cmdp[4] = (unsigned char) ((lba >> 40) & 0xff);
+ hdr->cmdp[5] = (unsigned char) ((lba >> 32) & 0xff);
+ hdr->cmdp[6] = (unsigned char) ((lba >> 24) & 0xff);
+ hdr->cmdp[7] = (unsigned char) ((lba >> 16) & 0xff);
+ hdr->cmdp[8] = (unsigned char) ((lba >> 8) & 0xff);
+ hdr->cmdp[9] = (unsigned char) (lba & 0xff);
+ hdr->cmdp[10] = (unsigned char) ((nr_blocks >> 32) & 0xff);
+ hdr->cmdp[11] = (unsigned char) ((nr_blocks >> 16) & 0xff);
+ hdr->cmdp[12] = (unsigned char) ((nr_blocks >> 8) & 0xff);
+ hdr->cmdp[13] = (unsigned char) (nr_blocks & 0xff);
+ }
}
+ hdr->timeout = SCSI_TIMEOUT_MS;
return 0;
}
static int fio_sgio_queue(struct thread_data *td, struct io_u *io_u)
{
struct sg_io_hdr *hdr = &io_u->hdr;
- int ret;
+ int ret, do_sync = 0;
+
+ fio_ro_check(td, io_u);
+
+ if (td->o.sync_io || td->o.odirect || ddir_sync(io_u->ddir))
+ do_sync = 1;
- ret = fio_sgio_doio(td, io_u, io_u->ddir == DDIR_SYNC);
+ ret = fio_sgio_doio(td, io_u, do_sync);
if (ret < 0)
io_u->error = errno;
io_u->error = EIO;
}
- return io_u->error;
+ if (io_u->error) {
+ td_verror(td, io_u->error, "xfer");
+ return FIO_Q_COMPLETED;
+ }
+
+ return ret;
}
static struct io_u *fio_sgio_event(struct thread_data *td, int event)
{
- struct sgio_data *sd = td->io_ops->data;
+ struct sgio_data *sd = td->io_ops_data;
return sd->events[event];
}
-static int fio_sgio_get_bs(struct thread_data *td, unsigned int *bs)
+static int fio_sgio_read_capacity(struct thread_data *td, unsigned int *bs,
+ unsigned long long *max_lba)
{
- struct sgio_data *sd = td->io_ops->data;
- struct io_u *io_u;
- struct sg_io_hdr *hdr;
- unsigned char buf[8];
+ /*
+ * need to do read capacity operation w/o benefit of sd or
+ * io_u structures, which are not initialized until later.
+ */
+ struct sg_io_hdr hdr;
+ unsigned char cmd[16];
+ unsigned char sb[64];
+ unsigned char buf[32]; // read capacity return
int ret;
+ int fd = -1;
- io_u = __get_io_u(td);
- io_u->file = &td->files[0];
- assert(io_u);
+ struct fio_file *f = td->files[0];
- hdr = &io_u->hdr;
- sgio_hdr_init(sd, hdr, io_u, 0);
- memset(buf, 0, sizeof(buf));
+ /* open file independent of rest of application */
+ fd = open(f->file_name, O_RDONLY);
+ if (fd < 0)
+ return -errno;
- hdr->cmdp[0] = 0x25;
- hdr->dxfer_direction = SG_DXFER_FROM_DEV;
- hdr->dxferp = buf;
- hdr->dxfer_len = sizeof(buf);
+ memset(&hdr, 0, sizeof(hdr));
+ memset(cmd, 0, sizeof(cmd));
+ memset(sb, 0, sizeof(sb));
+ memset(buf, 0, sizeof(buf));
- ret = fio_sgio_doio(td, io_u, 1);
- if (ret) {
- put_io_u(td, io_u);
+ /* First let's try a 10 byte read capacity. */
+ hdr.interface_id = 'S';
+ hdr.cmdp = cmd;
+ hdr.cmd_len = 10;
+ hdr.sbp = sb;
+ hdr.mx_sb_len = sizeof(sb);
+ hdr.timeout = SCSI_TIMEOUT_MS;
+ hdr.cmdp[0] = 0x25; // Read Capacity(10)
+ hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+ hdr.dxferp = buf;
+ hdr.dxfer_len = sizeof(buf);
+
+ ret = ioctl(fd, SG_IO, &hdr);
+ if (ret < 0) {
+ close(fd);
return ret;
}
- *bs = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
- put_io_u(td, io_u);
+ *bs = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
+ *max_lba = ((buf[0] << 24) | (buf[1] << 16) | (buf[2] << 8) | buf[3]) & MAX_10B_LBA; // for some reason max_lba is being sign extended even though unsigned.
+
+ /*
+ * If max lba masked by MAX_10B_LBA equals MAX_10B_LBA,
+ * then need to retry with 16 byte Read Capacity command.
+ */
+ if (*max_lba == MAX_10B_LBA) {
+ hdr.cmd_len = 16;
+ hdr.cmdp[0] = 0x9e; // service action
+ hdr.cmdp[1] = 0x10; // Read Capacity(16)
+ hdr.cmdp[10] = (unsigned char) ((sizeof(buf) >> 24) & 0xff);
+ hdr.cmdp[11] = (unsigned char) ((sizeof(buf) >> 16) & 0xff);
+ hdr.cmdp[12] = (unsigned char) ((sizeof(buf) >> 8) & 0xff);
+ hdr.cmdp[13] = (unsigned char) (sizeof(buf) & 0xff);
+
+ hdr.dxfer_direction = SG_DXFER_FROM_DEV;
+ hdr.dxferp = buf;
+ hdr.dxfer_len = sizeof(buf);
+
+ ret = ioctl(fd, SG_IO, &hdr);
+ if (ret < 0) {
+ close(fd);
+ return ret;
+ }
+
+ /* record if an io error occurred */
+ if (hdr.info & SG_INFO_CHECK)
+ td_verror(td, EIO, "fio_sgio_read_capacity");
+
+ *bs = (buf[8] << 24) | (buf[9] << 16) | (buf[10] << 8) | buf[11];
+ *max_lba = ((unsigned long long)buf[0] << 56) |
+ ((unsigned long long)buf[1] << 48) |
+ ((unsigned long long)buf[2] << 40) |
+ ((unsigned long long)buf[3] << 32) |
+ ((unsigned long long)buf[4] << 24) |
+ ((unsigned long long)buf[5] << 16) |
+ ((unsigned long long)buf[6] << 8) |
+ (unsigned long long)buf[7];
+ }
+
+ close(fd);
return 0;
}
static void fio_sgio_cleanup(struct thread_data *td)
{
- struct sgio_data *sd = td->io_ops->data;
+ struct sgio_data *sd = td->io_ops_data;
if (sd) {
free(sd->events);
free(sd->pfds);
free(sd->sgbuf);
free(sd);
-
- td->io_ops->data = NULL;
}
}
static int fio_sgio_init(struct thread_data *td)
{
- struct fio_file *f = &td->files[0];
struct sgio_data *sd;
- unsigned int bs;
- int ret;
sd = malloc(sizeof(*sd));
memset(sd, 0, sizeof(*sd));
- sd->cmds = malloc(td->iodepth * sizeof(struct sgio_cmd));
- memset(sd->cmds, 0, td->iodepth * sizeof(struct sgio_cmd));
- sd->events = malloc(td->iodepth * sizeof(struct io_u *));
- memset(sd->events, 0, td->iodepth * sizeof(struct io_u *));
- sd->pfds = malloc(sizeof(struct pollfd) * td->nr_files);
- memset(sd->pfds, 0, sizeof(struct pollfd) * td->nr_files);
- sd->fd_flags = malloc(sizeof(int) * td->nr_files);
- memset(sd->fd_flags, 0, sizeof(int) * td->nr_files);
- sd->sgbuf = malloc(sizeof(struct sg_io_hdr) * td->iodepth);
- memset(sd->sgbuf, 0, sizeof(struct sg_io_hdr) * td->iodepth);
-
- td->io_ops->data = sd;
-
- if (td->filetype == FIO_TYPE_BD) {
+ sd->cmds = malloc(td->o.iodepth * sizeof(struct sgio_cmd));
+ memset(sd->cmds, 0, td->o.iodepth * sizeof(struct sgio_cmd));
+ sd->events = malloc(td->o.iodepth * sizeof(struct io_u *));
+ memset(sd->events, 0, td->o.iodepth * sizeof(struct io_u *));
+ sd->pfds = malloc(sizeof(struct pollfd) * td->o.nr_files);
+ memset(sd->pfds, 0, sizeof(struct pollfd) * td->o.nr_files);
+ sd->fd_flags = malloc(sizeof(int) * td->o.nr_files);
+ memset(sd->fd_flags, 0, sizeof(int) * td->o.nr_files);
+ sd->sgbuf = malloc(sizeof(struct sg_io_hdr) * td->o.iodepth);
+ memset(sd->sgbuf, 0, sizeof(struct sg_io_hdr) * td->o.iodepth);
+ sd->type_checked = 0;
+ td->io_ops_data = sd;
+
+ /*
+ * we want to do it, regardless of whether odirect is set or not
+ */
+ td->o.override_sync = 1;
+ return 0;
+}
+
+static int fio_sgio_type_check(struct thread_data *td, struct fio_file *f)
+{
+ struct sgio_data *sd = td->io_ops_data;
+ unsigned int bs = 0;
+ unsigned long long max_lba = 0;
+
+ if (f->filetype == FIO_TYPE_BLOCK) {
if (ioctl(f->fd, BLKSSZGET, &bs) < 0) {
- td_verror(td, errno);
- goto err;
+ td_verror(td, errno, "ioctl");
+ return 1;
}
- } else if (td->filetype == FIO_TYPE_CHAR) {
- int version;
+ } else if (f->filetype == FIO_TYPE_CHAR) {
+ int version, ret;
if (ioctl(f->fd, SG_GET_VERSION_NUM, &version) < 0) {
- td_verror(td, errno);
- goto err;
+ td_verror(td, errno, "ioctl");
+ return 1;
}
- ret = fio_sgio_get_bs(td, &bs);
- if (ret)
- goto err;
+ ret = fio_sgio_read_capacity(td, &bs, &max_lba);
+ if (ret) {
+ td_verror(td, td->error, "fio_sgio_read_capacity");
+ log_err("ioengine sg unable to read capacity successfully\n");
+ return 1;
+ }
} else {
- log_err("ioengine sgio only works on block devices\n");
- goto err;
+ td_verror(td, EINVAL, "wrong file type");
+ log_err("ioengine sg only works on block or character devices\n");
+ return 1;
}
sd->bs = bs;
+ // Determine size of commands needed based on max_lba
+ if (max_lba >= MAX_10B_LBA) {
+ dprint(FD_IO, "sgio_type_check: using 16 byte read/write "
+ "commands for lba above 0x%016llx/0x%016llx\n",
+ MAX_10B_LBA, max_lba);
+ }
- if (td->filetype == FIO_TYPE_BD)
- td->io_ops->getevents = fio_sgio_ioctl_getevents;
- else
- td->io_ops->getevents = fio_sgio_getevents;
+ if (f->filetype == FIO_TYPE_BLOCK) {
+ td->io_ops->getevents = NULL;
+ td->io_ops->event = NULL;
+ }
+ sd->type_checked = 1;
+
+ return 0;
+}
+
+static int fio_sgio_open(struct thread_data *td, struct fio_file *f)
+{
+ struct sgio_data *sd = td->io_ops_data;
+ int ret;
+
+ ret = generic_open_file(td, f);
+ if (ret)
+ return ret;
+
+ if (sd && !sd->type_checked && fio_sgio_type_check(td, f)) {
+ ret = generic_close_file(td, f);
+ return 1;
+ }
+
+ return 0;
+}
+
+/*
+ * Build an error string with details about the driver, host or scsi
+ * error contained in the sg header Caller will use as necessary.
+ */
+static char *fio_sgio_errdetails(struct io_u *io_u)
+{
+ struct sg_io_hdr *hdr = &io_u->hdr;
+#define MAXERRDETAIL 1024
+#define MAXMSGCHUNK 128
+ char *msg, msgchunk[MAXMSGCHUNK];
+ int i;
+
+ msg = calloc(1, MAXERRDETAIL);
+ strcpy(msg, "");
/*
- * we want to do it, regardless of whether odirect is set or not
+ * can't seem to find sg_err.h, so I'll just echo the define values
+ * so others can search on internet to find clearer clues of meaning.
*/
- td->override_sync = 1;
+ if (hdr->info & SG_INFO_CHECK) {
+ if (hdr->host_status) {
+ snprintf(msgchunk, MAXMSGCHUNK, "SG Host Status: 0x%02x; ", hdr->host_status);
+ strlcat(msg, msgchunk, MAXERRDETAIL);
+ switch (hdr->host_status) {
+ case 0x01:
+ strlcat(msg, "SG_ERR_DID_NO_CONNECT", MAXERRDETAIL);
+ break;
+ case 0x02:
+ strlcat(msg, "SG_ERR_DID_BUS_BUSY", MAXERRDETAIL);
+ break;
+ case 0x03:
+ strlcat(msg, "SG_ERR_DID_TIME_OUT", MAXERRDETAIL);
+ break;
+ case 0x04:
+ strlcat(msg, "SG_ERR_DID_BAD_TARGET", MAXERRDETAIL);
+ break;
+ case 0x05:
+ strlcat(msg, "SG_ERR_DID_ABORT", MAXERRDETAIL);
+ break;
+ case 0x06:
+ strlcat(msg, "SG_ERR_DID_PARITY", MAXERRDETAIL);
+ break;
+ case 0x07:
+ strlcat(msg, "SG_ERR_DID_ERROR (internal error)", MAXERRDETAIL);
+ break;
+ case 0x08:
+ strlcat(msg, "SG_ERR_DID_RESET", MAXERRDETAIL);
+ break;
+ case 0x09:
+ strlcat(msg, "SG_ERR_DID_BAD_INTR (unexpected)", MAXERRDETAIL);
+ break;
+ case 0x0a:
+ strlcat(msg, "SG_ERR_DID_PASSTHROUGH", MAXERRDETAIL);
+ break;
+ case 0x0b:
+ strlcat(msg, "SG_ERR_DID_SOFT_ERROR (driver retry?)", MAXERRDETAIL);
+ break;
+ case 0x0c:
+ strlcat(msg, "SG_ERR_DID_IMM_RETRY", MAXERRDETAIL);
+ break;
+ case 0x0d:
+ strlcat(msg, "SG_ERR_DID_REQUEUE", MAXERRDETAIL);
+ break;
+ case 0x0e:
+ strlcat(msg, "SG_ERR_DID_TRANSPORT_DISRUPTED", MAXERRDETAIL);
+ break;
+ case 0x0f:
+ strlcat(msg, "SG_ERR_DID_TRANSPORT_FAILFAST", MAXERRDETAIL);
+ break;
+ case 0x10:
+ strlcat(msg, "SG_ERR_DID_TARGET_FAILURE", MAXERRDETAIL);
+ break;
+ case 0x11:
+ strlcat(msg, "SG_ERR_DID_NEXUS_FAILURE", MAXERRDETAIL);
+ break;
+ case 0x12:
+ strlcat(msg, "SG_ERR_DID_ALLOC_FAILURE", MAXERRDETAIL);
+ break;
+ case 0x13:
+ strlcat(msg, "SG_ERR_DID_MEDIUM_ERROR", MAXERRDETAIL);
+ break;
+ default:
+ strlcat(msg, "Unknown", MAXERRDETAIL);
+ break;
+ }
+ strlcat(msg, ". ", MAXERRDETAIL);
+ }
+ if (hdr->driver_status) {
+ snprintf(msgchunk, MAXMSGCHUNK, "SG Driver Status: 0x%02x; ", hdr->driver_status);
+ strlcat(msg, msgchunk, MAXERRDETAIL);
+ switch (hdr->driver_status & 0x0F) {
+ case 0x01:
+ strlcat(msg, "SG_ERR_DRIVER_BUSY", MAXERRDETAIL);
+ break;
+ case 0x02:
+ strlcat(msg, "SG_ERR_DRIVER_SOFT", MAXERRDETAIL);
+ break;
+ case 0x03:
+ strlcat(msg, "SG_ERR_DRIVER_MEDIA", MAXERRDETAIL);
+ break;
+ case 0x04:
+ strlcat(msg, "SG_ERR_DRIVER_ERROR", MAXERRDETAIL);
+ break;
+ case 0x05:
+ strlcat(msg, "SG_ERR_DRIVER_INVALID", MAXERRDETAIL);
+ break;
+ case 0x06:
+ strlcat(msg, "SG_ERR_DRIVER_TIMEOUT", MAXERRDETAIL);
+ break;
+ case 0x07:
+ strlcat(msg, "SG_ERR_DRIVER_HARD", MAXERRDETAIL);
+ break;
+ case 0x08:
+ strlcat(msg, "SG_ERR_DRIVER_SENSE", MAXERRDETAIL);
+ break;
+ default:
+ strlcat(msg, "Unknown", MAXERRDETAIL);
+ break;
+ }
+ strlcat(msg, "; ", MAXERRDETAIL);
+ switch (hdr->driver_status & 0xF0) {
+ case 0x10:
+ strlcat(msg, "SG_ERR_SUGGEST_RETRY", MAXERRDETAIL);
+ break;
+ case 0x20:
+ strlcat(msg, "SG_ERR_SUGGEST_ABORT", MAXERRDETAIL);
+ break;
+ case 0x30:
+ strlcat(msg, "SG_ERR_SUGGEST_REMAP", MAXERRDETAIL);
+ break;
+ case 0x40:
+ strlcat(msg, "SG_ERR_SUGGEST_DIE", MAXERRDETAIL);
+ break;
+ case 0x80:
+ strlcat(msg, "SG_ERR_SUGGEST_SENSE", MAXERRDETAIL);
+ break;
+ }
+ strlcat(msg, ". ", MAXERRDETAIL);
+ }
+ if (hdr->status) {
+ snprintf(msgchunk, MAXMSGCHUNK, "SG SCSI Status: 0x%02x; ", hdr->status);
+ strlcat(msg, msgchunk, MAXERRDETAIL);
+ // SCSI 3 status codes
+ switch (hdr->status) {
+ case 0x02:
+ strlcat(msg, "CHECK_CONDITION", MAXERRDETAIL);
+ break;
+ case 0x04:
+ strlcat(msg, "CONDITION_MET", MAXERRDETAIL);
+ break;
+ case 0x08:
+ strlcat(msg, "BUSY", MAXERRDETAIL);
+ break;
+ case 0x10:
+ strlcat(msg, "INTERMEDIATE", MAXERRDETAIL);
+ break;
+ case 0x14:
+ strlcat(msg, "INTERMEDIATE_CONDITION_MET", MAXERRDETAIL);
+ break;
+ case 0x18:
+ strlcat(msg, "RESERVATION_CONFLICT", MAXERRDETAIL);
+ break;
+ case 0x22:
+ strlcat(msg, "COMMAND_TERMINATED", MAXERRDETAIL);
+ break;
+ case 0x28:
+ strlcat(msg, "TASK_SET_FULL", MAXERRDETAIL);
+ break;
+ case 0x30:
+ strlcat(msg, "ACA_ACTIVE", MAXERRDETAIL);
+ break;
+ case 0x40:
+ strlcat(msg, "TASK_ABORTED", MAXERRDETAIL);
+ break;
+ default:
+ strlcat(msg, "Unknown", MAXERRDETAIL);
+ break;
+ }
+ strlcat(msg, ". ", MAXERRDETAIL);
+ }
+ if (hdr->sb_len_wr) {
+ snprintf(msgchunk, MAXMSGCHUNK, "Sense Data (%d bytes):", hdr->sb_len_wr);
+ strlcat(msg, msgchunk, MAXERRDETAIL);
+ for (i = 0; i < hdr->sb_len_wr; i++) {
+ snprintf(msgchunk, MAXMSGCHUNK, " %02x", hdr->sbp[i]);
+ strlcat(msg, msgchunk, MAXERRDETAIL);
+ }
+ strlcat(msg, ". ", MAXERRDETAIL);
+ }
+ if (hdr->resid != 0) {
+ snprintf(msgchunk, MAXMSGCHUNK, "SG Driver: %d bytes out of %d not transferred. ", hdr->resid, hdr->dxfer_len);
+ strlcat(msg, msgchunk, MAXERRDETAIL);
+ }
+ }
+
+ if (!(hdr->info & SG_INFO_CHECK) && !strlen(msg))
+ strncpy(msg, "SG Driver did not report a Host, Driver or Device check",
+ MAXERRDETAIL - 1);
+
+ return msg;
+}
+
+/*
+ * get max file size from read capacity.
+ */
+static int fio_sgio_get_file_size(struct thread_data *td, struct fio_file *f)
+{
+ /*
+ * get_file_size is being called even before sgio_init is
+ * called, so none of the sg_io structures are
+ * initialized in the thread_data yet. So we need to do the
+ * ReadCapacity without any of those helpers. One of the effects
+ * is that ReadCapacity may get called 4 times on each open:
+ * readcap(10) followed by readcap(16) if needed - just to get
+ * the file size after the init occurs - it will be called
+ * again when "type_check" is called during structure
+ * initialization I'm not sure how to prevent this little
+ * inefficiency.
+ */
+ unsigned int bs = 0;
+ unsigned long long max_lba = 0;
+ int ret;
+
+ if (fio_file_size_known(f))
+ return 0;
+
+ if (f->filetype != FIO_TYPE_BLOCK && f->filetype != FIO_TYPE_CHAR) {
+ td_verror(td, EINVAL, "wrong file type");
+ log_err("ioengine sg only works on block or character devices\n");
+ return 1;
+ }
+
+ ret = fio_sgio_read_capacity(td, &bs, &max_lba);
+ if (ret ) {
+ td_verror(td, td->error, "fio_sgio_read_capacity");
+ log_err("ioengine sg unable to successfully execute read capacity to get block size and maximum lba\n");
+ return 1;
+ }
+
+ f->real_file_size = (max_lba + 1) * bs;
+ fio_file_set_size_known(f);
return 0;
-err:
- free(sd->events);
- free(sd->cmds);
- free(sd->fd_flags);
- free(sd->pfds);
- free(sd->sgbuf);
- free(sd);
- td->io_ops->data = NULL;
- return 1;
}
+
static struct ioengine_ops ioengine = {
.name = "sg",
.version = FIO_IOOPS_VERSION,
.prep = fio_sgio_prep,
.queue = fio_sgio_queue,
.getevents = fio_sgio_getevents,
+ .errdetails = fio_sgio_errdetails,
.event = fio_sgio_event,
.cleanup = fio_sgio_cleanup,
+ .open_file = fio_sgio_open,
+ .close_file = generic_close_file,
+ .get_file_size = fio_sgio_get_file_size,
.flags = FIO_SYNCIO | FIO_RAWIO,
};
*/
static int fio_sgio_init(struct thread_data fio_unused *td)
{
- fprintf(stderr, "fio: sgio not available\n");
+ log_err("fio: ioengine sg not available\n");
return 1;
}
static struct ioengine_ops ioengine = {
- .name = "sgio",
+ .name = "sg",
.version = FIO_IOOPS_VERSION,
.init = fio_sgio_init,
};
projects / fio.git / blobdiff