For fio to utilize a fabrics target with multiple systems, it needs a
way for the user to specify which subsystem to use. This is done by
providing 'subnqn' as fio-option.
Signed-off-by: Simon A. F. Lund <simon.lund@xxxxxxxxxxx>
Signed-off-by: Ankit Kumar <ankit.kumar@xxxxxxxxxxx>
---
HOWTO.rst | 5 +++++
engines/xnvme.c | 11 +++++++++++
fio.1 | 4 ++++
3 files changed, 20 insertions(+)
diff --git a/HOWTO.rst b/HOWTO.rst
index aba6c9b3..0fec38a7 100644
--- a/HOWTO.rst
+++ b/HOWTO.rst
@@ -2880,6 +2880,11 @@ with the caveat that when used on the command line, they must come after the
xnvme namespace identifier for userspace NVMe driver, SPDK or vfio.
+.. option:: xnvme_dev_subnqn=str : [xnvme]
+
+ Sets the subsystem NQN for fabrics. This is for xNVMe to utilize a
+ fabrics target with multiple systems.
+
.. option:: xnvme_iovec=int : [xnvme]
If this option is set. xnvme will use vectored read/write commands.
diff --git a/engines/xnvme.c b/engines/xnvme.c
index ee6b67c1..208d917d 100644
--- a/engines/xnvme.c
+++ b/engines/xnvme.c
@@ -78,6 +78,7 @@ struct xnvme_fioe_options {
char *xnvme_async;
char *xnvme_sync;
char *xnvme_admin;
+ char *xnvme_dev_subnqn;
};
static struct fio_option options[] = {
@@ -145,6 +146,15 @@ static struct fio_option options[] = {
.category = FIO_OPT_C_ENGINE,
.group = FIO_OPT_G_XNVME,
},
+ {
+ .name = "xnvme_dev_subnqn",
+ .lname = "Subsystem nqn for Fabrics",
+ .type = FIO_OPT_STR_STORE,
+ .off1 = offsetof(struct xnvme_fioe_options, xnvme_dev_subnqn),
+ .help = "Subsystem NQN for Fabrics",
+ .category = FIO_OPT_C_ENGINE,
+ .group = FIO_OPT_G_XNVME,
+ },
{
.name = "xnvme_iovec",
.lname = "Vectored IOs",
@@ -181,6 +191,7 @@ static struct xnvme_opts xnvme_opts_from_fioe(struct thread_data *td)
struct xnvme_opts opts = xnvme_opts_default();
opts.nsid = o->xnvme_dev_nsid;
+ opts.subnqn = o->xnvme_dev_subnqn;
opts.be = o->xnvme_be;
opts.async = o->xnvme_async;
opts.sync = o->xnvme_sync;
diff --git a/fio.1 b/fio.1
index 004d3ba0..134aed54 100644
--- a/fio.1
+++ b/fio.1
@@ -2627,6 +2627,10 @@ Use Linux Block Layer ioctl() and sysfs for admin commands.
.BI (xnvme)xnvme_dev_nsid\fR=\fPint
xnvme namespace identifier for userspace NVMe driver SPDK or vfio.
.TP
+.BI (xnvme)xnvme_dev_subnqn\fR=\fPstr
+Sets the subsystem NQN for fabrics. This is for xNVMe to utilize a fabrics
+target with multiple systems.
+.TP
.BI (xnvme)xnvme_iovec
If this option is set, xnvme will use vectored read/write commands.
.TP
--
2.17.1
