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Date: Fri, 4 Apr 2025 10:52:13 -0700
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Subject: hw/nvme: Issue with multiple controllers behind a subsystem
To: Klaus Jensen <its@irrelevant.dk>, Keith Busch <kbusch@kernel.org>,
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I'm running into a issue with the latest qemu-nvme with v10.0.0-rc2 with=20
regards to multiple controllers behind a subsystem.=C2=A0 When I setup a=20
subsystem with 2 controllers, each with a private/non-shared namespace,=20
the two private/non-shared namespaces all get attached to one of the=20
controllers.
I'm sending out diffs that resolve the problem but would like to get=20
some feedback before sending a formal patch.
See below.
Thanks,
Alan Adamson
[root@localhost qemu-subsys]# git describe
v10.0.0-rc2
[root@localhost qemu-subsys]#
QEMU NVMe Config
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
-device nvme-subsys,id=3Dsubsys0 \
-device=20
nvme,serial=3Ddeadbeef,id=3Dnvme0,subsys=3Dsubsys0,atomic.dn=3Doff,atomic.a=
wun=3D31,atomic.awupf=3D15=20
\
-device=20
nvme,serial=3Ddeadbeef,id=3Dnvme1,subsys=3Dsubsys0,atomic.dn=3Doff,atomic.a=
wun=3D127,atomic.awupf=3D63=20
\
-drive id=3Dns1,file=3D/dev/nullb3,if=3Dnone \
-drive id=3Dns2,file=3D/dev/nullb2,if=3Dnone \
-drive id=3Dns3,file=3D/dev/nullb1,if=3Dnone \
-device nvme-ns,drive=3Dns1,bus=3Dnvme0,nsid=3D1,shared=3Dfalse \
-device nvme-ns,drive=3Dns2,bus=3Dnvme1,nsid=3D2,shared=3Dfalse \
-device nvme-ns,drive=3Dns3,bus=3Dnvme1,nsid=3D3,shared=3Dtrue=C2=A0 \
1 Subsystem (subsys0)
=C2=A0=C2=A0=C2=A0 2 Controllers (nvme0/nvme1)
nvme0
=C2=A0=C2=A0=C2=A0 private namespace (nsid=3D1)
=C2=A0=C2=A0=C2=A0 shared namespace (nsid=3D3)
nvme1
=C2=A0=C2=A0=C2=A0 private namespace (nsid=3D2)
=C2=A0=C2=A0=C2=A0 shared namespace (nsid=3D3)
What Linux is seeing
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
[root@localhost ~]# nvme list -v
Subsystem Subsystem-NQN Controllers
----------------=20
---------------------------------------------------------------------------=
---------------------=20
----------------
nvme-subsys1 nqn.2019-08.org.qemu:subsys0 nvme0, nvme1
Device=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Cntlid S=
N MN=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=20
FR=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 TxPort Address=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0 Slot=C2=A0=C2=A0 Subsystem=C2=A0=C2=A0=C2=A0 Namespac=
es
---------------- ------ --------------------=20
---------------------------------------- -------- ------ --------------=20
------ ------------ ----------------
nvme0=C2=A0=C2=A0=C2=A0 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 deadbeef=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 QEMU NVMe=20
Ctrl=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 9.2.92=C2=A0=C2=A0 pcie=C2=A0=C2=A0 0000:00:04.0=C2=A0=C2=A0 4=20
nvme-subsys1 nvme1n1, nvme1n2, nvme1n3
nvme1=C2=A0=C2=A0=C2=A0 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 deadbeef=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 QEMU NVMe=20
Ctrl=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 9.2.92=C2=A0=C2=A0 pcie=C2=A0=C2=A0 0000:00:05.0=C2=A0=C2=A0 5=20
nvme-subsys1 nvme1n1
Device=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Ge=
neric=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NSID Usag=
e=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20
Format=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Controll=
ers
----------------- ----------------- ----------=20
-------------------------- ---------------- ----------------
/dev/nvme1n1 /dev/ng1n1=C2=A0=C2=A0 0x3=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 268.44=C2=A0 GB / 268.44=C2=A0 GB 512=C2=A0=C2=A0 B +=C2=A0=20
0 B=C2=A0=C2=A0 nvme0, nvme1
/dev/nvme1n2 /dev/ng1n2=C2=A0=C2=A0 0x2=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 268.44=C2=A0 GB / 268.44=C2=A0 GB 512=C2=A0=C2=A0 B +=C2=A0=20
0 B=C2=A0=C2=A0 nvme0
/dev/nvme1n3 /dev/ng1n3=C2=A0=C2=A0 0x1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 268.44=C2=A0 GB / 268.44=C2=A0 GB 512=C2=A0=C2=A0 B +=C2=A0=20
0 B=C2=A0=C2=A0 nvme0
[root@localhost ~]# nvme id-ctrl /dev/nvme1n2 |=C2=A0 grep awupf
awupf=C2=A0=C2=A0=C2=A0=C2=A0 : 15
[root@localhost ~]# nvme id-ctrl /dev/nvme1n3 |=C2=A0 grep awupf
awupf=C2=A0=C2=A0=C2=A0=C2=A0 : 15
[root@localhost ~]#
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Both private namspaces are being attached to the same controller (nvme0)
Fix
=3D=3D=3D
Need to keep track of the controller that registers a namespace with the=20
subsystem
and only allow other controllers to attach to the namespace if it is shared.
Non-shared namespaces can only be attached to a controller than=20
registers it.
Proposal
=3D=3D=3D=3D=3D=3D=3D=3D
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 518d02dc6670..883d8d4722fd 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -5063,7 +5063,8 @@ static uint16_t nvme_endgrp_info(NvmeCtrl *n,=20
uint8_t rae, uint32_t buf_len,
=C2=A0=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2=A0=C2=A0 for (i =3D 1; i <=3D NVME_MAX_NAMESPACES; i++) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D nvme_subs=
ys_ns(n->subsys, i);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D nvme_subs=
ys_ns(n, i);
+
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 c=
ontinue;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5700,7 +5701,7 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n,=20
NvmeRequest *req, bool active)
=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0 if (unlikely(!ns)) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!active) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n->subsys, nsid);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i=
f (!ns) {
[root@localhost qemu-subsys]# git log -p=20
f4b9f10a80c30f1d6b9850d476eb8226bda3f553 > /tmp/p
^C
[root@localhost qemu-subsys]# vi /tmp/p
[root@localhost qemu-subsys]# cat /tmp/p
commit f4b9f10a80c30f1d6b9850d476eb8226bda3f553
Author: Alan Adamson <alan.adamson@oracle.com>
Date:=C2=A0=C2=A0 2025-04-03 14:10:30 -0400
=C2=A0=C2=A0=C2=A0 subsys multi controller shared fix
diff --git a/hw/nvme/ctrl.c b/hw/nvme/ctrl.c
index 518d02dc6670..883d8d4722fd 100644
--- a/hw/nvme/ctrl.c
+++ b/hw/nvme/ctrl.c
@@ -5063,7 +5063,8 @@ static uint16_t nvme_endgrp_info(NvmeCtrl *n,=20
uint8_t rae, uint32_t buf_len,
=C2=A0=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2=A0=C2=A0 for (i =3D 1; i <=3D NVME_MAX_NAMESPACES; i++) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D nvme_subs=
ys_ns(n->subsys, i);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D nvme_subs=
ys_ns(n, i);
+
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 c=
ontinue;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5700,7 +5701,7 @@ static uint16_t nvme_identify_ns(NvmeCtrl *n,=20
NvmeRequest *req, bool active)
=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0 if (unlikely(!ns)) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!active) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n->subsys, nsid);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i=
f (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 return nvme_rpt_empty_id_struct(n, req);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5739,7 +5740,7 @@ static uint16_t nvme_identify_ctrl_list(NvmeCtrl=20
*n, NvmeRequest *req,
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 r=
eturn NVME_INVALID_FIELD | NVME_DNR;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n->subsys=
, nsid);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 r=
eturn NVME_INVALID_FIELD | NVME_DNR;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5809,7 +5810,7 @@ static uint16_t nvme_identify_ns_ind(NvmeCtrl *n,=20
NvmeRequest *req, bool alloc)
=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0 if (unlikely(!ns)) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (alloc) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n->subsys, nsid);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i=
f (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 return nvme_rpt_empty_id_struct(n, req);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5837,7 +5838,7 @@ static uint16_t nvme_identify_ns_csi(NvmeCtrl *n,=20
NvmeRequest *req,
=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0 if (unlikely(!ns)) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!active) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n->subsys, nsid);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D =
nvme_subsys_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i=
f (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 return nvme_rpt_empty_id_struct(n, req);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5884,7 +5885,7 @@ static uint16_t nvme_identify_nslist(NvmeCtrl *n,=20
NvmeRequest *req,
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_ns(n, i);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i=
f (!active) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n->subsys, i);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n, i);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 continue;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -5932,7 +5933,7 @@ static uint16_t nvme_identify_nslist_csi(NvmeCtrl=20
*n, NvmeRequest *req,
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 ns =3D nvme_ns(n, i);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 i=
f (!active) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n->subsys, i);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n, i);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 continue;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -6793,7 +6794,7 @@ static uint16_t nvme_ns_attachment(NvmeCtrl *n,=20
NvmeRequest *req)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return NVME_INVALID_NSID =
| NVME_DNR;
=C2=A0=C2=A0=C2=A0=C2=A0 }
-=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n->subsys, nsid);
+=C2=A0=C2=A0=C2=A0 ns =3D nvme_subsys_ns(n, nsid);
=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return NVME_INVALID_FIELD=
| NVME_DNR;
=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -7751,17 +7752,23 @@ static int nvme_start_ctrl(NvmeCtrl *n)
=C2=A0=C2=A0=C2=A0=C2=A0 nvme_set_timestamp(n, 0ULL);
-=C2=A0=C2=A0=C2=A0 /* verify that the command sets of attached namespaces =
are supported */
-=C2=A0=C2=A0=C2=A0 for (int i =3D 1; i <=3D NVME_MAX_NAMESPACES; i++) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D nvme_subs=
ys_ns(n->subsys, i);
+=C2=A0=C2=A0=C2=A0 if (n->subsys) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 for (int i =3D 1; i <=3D NVME_M=
AX_NAMESPACES; i++) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D n->subsys=
->namespaces[i].namespace;
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (ns && nvme_csi_supported(n,=
ns->csi) && !ns->params.detached) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns=
->attached || ns->params.shared) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 nvme_attach_ns(n, ns);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!ns) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 continue;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!(n->subsys->namespaces[i].=
ctrl =3D=3D n) && !ns->params.shared) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 continue;
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (nvme_csi_supported(n, ns->c=
si) && !ns->params.detached) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0 if (!ns->attached || ns->params.shared) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nvme_at=
tach_ns(n, ns);
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2=A0=C2=A0 }
-
=C2=A0=C2=A0=C2=A0=C2=A0 nvme_update_dsm_limits(n, NULL);
=C2=A0=C2=A0=C2=A0=C2=A0 return 0;
@@ -8993,7 +9000,8 @@ static void nvme_realize(PCIDevice *pci_dev, Error=20
**errp)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 r=
eturn;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 n->subsys->namespaces[ns->param=
s.nsid] =3D ns;
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 n->subsys->namespaces[ns->param=
s.nsid].namespace =3D ns;
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 n->subsys->namespaces[ns->param=
s.nsid].ctrl =3D n;
=C2=A0=C2=A0=C2=A0=C2=A0 }
=C2=A0}
diff --git a/hw/nvme/ns.c b/hw/nvme/ns.c
index 98c1e75a5d29..9cca699b354f 100644
--- a/hw/nvme/ns.c
+++ b/hw/nvme/ns.c
@@ -742,7 +742,7 @@ static void nvme_ns_realize(DeviceState *dev, Error=20
**errp)
=C2=A0=C2=A0=C2=A0=C2=A0 if (!nsid) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 for (i =3D 1; i <=3D NVME=
_MAX_NAMESPACES; i++) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (nvm=
e_subsys_ns(subsys, i)) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (nvm=
e_subsys_ns(n, i)) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0 continue;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
@@ -754,12 +754,13 @@ static void nvme_ns_realize(DeviceState *dev,=20
Error **errp)
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 e=
rror_setg(errp, "no free namespace id");
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 r=
eturn;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
-=C2=A0=C2=A0=C2=A0 } else if (nvme_subsys_ns(subsys, nsid)) {
+=C2=A0=C2=A0=C2=A0 } else if (nvme_subsys_ns(n, nsid)) {
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 error_setg(errp, "namespa=
ce id '%d' already allocated", nsid);
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return;
=C2=A0=C2=A0=C2=A0=C2=A0 }
-=C2=A0=C2=A0=C2=A0 subsys->namespaces[nsid] =3D ns;
+=C2=A0=C2=A0=C2=A0 subsys->namespaces[nsid].namespace =3D ns;
+=C2=A0=C2=A0=C2=A0 subsys->namespaces[nsid].ctrl =3D n;
=C2=A0=C2=A0=C2=A0=C2=A0 ns->id_ns.endgid =3D cpu_to_le16(0x1);
=C2=A0=C2=A0=C2=A0=C2=A0 ns->id_ns_ind.endgrpid =3D cpu_to_le16(0x1);
diff --git a/hw/nvme/nvme.h b/hw/nvme/nvme.h
index 6f782ba18826..bea3b96a6dfa 100644
--- a/hw/nvme/nvme.h
+++ b/hw/nvme/nvme.h
@@ -97,6 +97,11 @@ typedef struct NvmeEnduranceGroup {
=C2=A0=C2=A0=C2=A0=C2=A0 } fdp;
=C2=A0} NvmeEnduranceGroup;
+typedef struct Namespaces {
+=C2=A0=C2=A0=C2=A0 NvmeCtrl=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0 *ctrl;
+=C2=A0=C2=A0=C2=A0 NvmeNamespace=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 *namespace;
+} Namespaces;
+
=C2=A0typedef struct NvmeSubsystem {
=C2=A0=C2=A0=C2=A0=C2=A0 DeviceState parent_obj;
=C2=A0=C2=A0=C2=A0=C2=A0 NvmeBus=C2=A0=C2=A0=C2=A0=C2=A0 bus;
@@ -104,7 +109,7 @@ typedef struct NvmeSubsystem {
=C2=A0=C2=A0=C2=A0=C2=A0 char=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 *s=
erial;
=C2=A0=C2=A0=C2=A0=C2=A0 NvmeCtrl=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0 *ctrls[NVME_MAX_CONTROLLERS];
-=C2=A0=C2=A0=C2=A0 NvmeNamespace=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 *namespaces=
[NVME_MAX_NAMESPACES + 1];
+=C2=A0=C2=A0=C2=A0 Namespaces=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0 namespaces[NVME_MAX_NAMESPACES + 1];
=C2=A0=C2=A0=C2=A0=C2=A0 NvmeEnduranceGroup endgrp;
=C2=A0=C2=A0=C2=A0=C2=A0 struct {
@@ -136,16 +141,6 @@ static inline NvmeCtrl=20
*nvme_subsys_ctrl(NvmeSubsystem *subsys,
=C2=A0=C2=A0=C2=A0=C2=A0 return subsys->ctrls[cntlid];
=C2=A0}
-static inline NvmeNamespace *nvme_subsys_ns(NvmeSubsystem *subsys,
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 uint32_t nsid)
-{
-=C2=A0=C2=A0=C2=A0 if (!subsys || !nsid || nsid > NVME_MAX_NAMESPACES) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return NULL;
-=C2=A0=C2=A0=C2=A0 }
-
-=C2=A0=C2=A0=C2=A0 return subsys->namespaces[nsid];
-}
-
=C2=A0#define TYPE_NVME_NS "nvme-ns"
=C2=A0#define NVME_NS(obj) \
=C2=A0=C2=A0=C2=A0=C2=A0 OBJECT_CHECK(NvmeNamespace, (obj), TYPE_NVME_NS)
@@ -711,6 +706,14 @@ static inline NvmeSecCtrlEntry=20
*nvme_sctrl_for_cntlid(NvmeCtrl *n,
=C2=A0=C2=A0=C2=A0=C2=A0 return NULL;
=C2=A0}
+static inline NvmeNamespace *nvme_subsys_ns(NvmeCtrl *n, uint32_t nsid)
+{
+=C2=A0=C2=A0=C2=A0 if (!n->subsys || !nsid || nsid > NVME_MAX_NAMESPACES) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 return NULL;
+=C2=A0=C2=A0=C2=A0 }
+=C2=A0=C2=A0=C2=A0 return n->subsys->namespaces[nsid].namespace;
+}
+
=C2=A0void nvme_attach_ns(NvmeCtrl *n, NvmeNamespace *ns);
=C2=A0uint16_t nvme_bounce_data(NvmeCtrl *n, void *ptr, uint32_t len,
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0 NvmeTxDirection dir, NvmeRequest *req);
diff --git a/hw/nvme/subsys.c b/hw/nvme/subsys.c
index 2ae56f12a596..d5751564c05c 100644
--- a/hw/nvme/subsys.c
+++ b/hw/nvme/subsys.c
@@ -92,13 +92,19 @@ int nvme_subsys_register_ctrl(NvmeCtrl *n, Error **errp)
=C2=A0=C2=A0=C2=A0=C2=A0 subsys->ctrls[cntlid] =3D n;
-=C2=A0=C2=A0=C2=A0 for (nsid =3D 1; nsid < ARRAY_SIZE(subsys->namespaces);=
nsid++) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D subsys->n=
amespaces[nsid];
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (ns && ns->params.shared && =
!ns->params.detached) {
-=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nvme_at=
tach_ns(n, ns);
+=C2=A0=C2=A0=C2=A0 for (nsid =3D 1; nsid <=3D NVME_MAX_NAMESPACES; nsid++)=
{
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NvmeNamespace *ns =3D subsys->n=
amespaces[nsid].namespace;
+
+=C2=A0=C2=A0=C2=A0 if (!ns) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 continu=
e;
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 if (!(subsys->namespaces[nsid].=
ctrl =3D=3D n) && !ns->params.shared) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 continu=
e;
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 }
+=C2=A0=C2=A0=C2=A0 if (ns->params.shared && !ns->params.detached) {
+=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 nvme_at=
tach_ns(n, ns);
+=C2=A0=C2=A0=C2=A0 }
=C2=A0=C2=A0=C2=A0=C2=A0 }
-
=C2=A0=C2=A0=C2=A0=C2=A0 return cntlid;
=C2=A0}
With this fix:
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
[root@localhost ~]# nvme list -v
Subsystem Subsystem-NQN Controllers
----------------=20
---------------------------------------------------------------------------=
---------------------=20
----------------
nvme-subsys1 nqn.2019-08.org.qemu:subsys0 nvme0, nvme1
Device=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Cntlid S=
N MN=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=20
FR=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 TxPort Address=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0 Slot=C2=A0=C2=A0 Subsystem=C2=A0=C2=A0=C2=A0 Namespac=
es
---------------- ------ --------------------=20
---------------------------------------- -------- ------ --------------=20
------ ------------ ----------------
nvme0=C2=A0=C2=A0=C2=A0 0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 deadbeef=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 QEMU NVMe=20
Ctrl=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 9.2.92=C2=A0=C2=A0 pcie=C2=A0=C2=A0 0000:00:04.0=C2=A0=C2=A0 4=20
nvme-subsys1 nvme1n2, nvme1n3
nvme1=C2=A0=C2=A0=C2=A0 1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 deadbeef=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 QEMU NVMe=20
Ctrl=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=
=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0 9.2.92=C2=A0=C2=A0 pcie=C2=A0=C2=A0 0000:00:05.0=C2=A0=C2=A0 5=20
nvme-subsys1 nvme1n1, nvme1n3
Device=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Ge=
neric=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 NSID Usag=
e=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=20
Format=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 Controll=
ers
----------------- ----------------- ----------=20
-------------------------- ---------------- ----------------
/dev/nvme1n1 /dev/ng1n1=C2=A0=C2=A0 0x2=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 268.44=C2=A0 GB / 268.44=C2=A0 GB 512=C2=A0=C2=A0 B +=C2=A0=20
0 B=C2=A0=C2=A0 nvme1
/dev/nvme1n2 /dev/ng1n2=C2=A0=C2=A0 0x1=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 268.44=C2=A0 GB / 268.44=C2=A0 GB 512=C2=A0=C2=A0 B +=C2=A0=20
0 B=C2=A0=C2=A0 nvme0
/dev/nvme1n3 /dev/ng1n3=C2=A0=C2=A0 0x3=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=
=C2=A0 268.44=C2=A0 GB / 268.44=C2=A0 GB 512=C2=A0=C2=A0 B +=C2=A0=20
0 B=C2=A0=C2=A0 nvme0, nvme1
[root@localhost ~]# nvme id-ctrl /dev/nvme1n1 |=C2=A0 grep awupf
awupf=C2=A0=C2=A0=C2=A0=C2=A0 : 63
[root@localhost ~]# nvme id-ctrl /dev/nvme1n2 |=C2=A0 grep awupf
awupf=C2=A0=C2=A0=C2=A0=C2=A0 : 15
[root@localhost ~]#
Each private namespace is attached to its own controller and that is=20
verified with the AWUPF values.