Hello,
This series supports namespace attachment: attach and detach. It means
that this series also introduced a scheme for allocated namespace which
is detached, but allocated in a NVMe subsystem. Given that now we have
nvme-subsys device to specify a NVMe subsystem, it can manage detached
namespaces from controllers in the subsystem itself.
Tested:
-device nvme-subsys,id=subsys0 \
-device nvme,serial=foo,id=nvme0,subsys=subsys0 \
-device nvme-ns,id=ns1,drive=drv0,nsid=1,subsys=subsys0,zoned=false \
-device nvme-ns,id=ns2,drive=drv1,nsid=2,subsys=subsys0,zoned=true \
-device
nvme-ns,id=ns3,drive=drv2,nsid=3,subsys=subsys0,detached=true,zoned=false \
-device
nvme-ns,id=ns4,drive=drv3,nsid=4,subsys=subsys0,detached=true,zoned=true \
root@vm:~# nvme list
Node SN Model
Namespace Usage Format FW Rev
--------------------- --------------------
---------------------------------------- --------- --------------------------
---------------- --------
/dev/nvme0n1 foo QEMU NVMe Ctrl
1 268.44 MB / 268.44 MB 512 B + 0 B 1.0
/dev/nvme0n2 foo QEMU NVMe Ctrl
2 268.44 MB / 268.44 MB 512 B + 0 B 1.0
root@vm:~# nvme attach-ns /dev/nvme0 --namespace-id=3 --controllers=0
attach-ns: Success, nsid:3
root@vm:~# nvme attach-ns /dev/nvme0 --namespace-id=4 --controllers=0
attach-ns: Success, nsid:4
root@vm:~# echo 1 > /sys/class/nvme/nvme0/rescan_controller
root@vm:~# nvme list
Node SN Model
Namespace Usage Format FW Rev
--------------------- --------------------
---------------------------------------- --------- --------------------------
---------------- --------
/dev/nvme0n1 foo QEMU NVMe Ctrl
1 268.44 MB / 268.44 MB 512 B + 0 B 1.0
/dev/nvme0n2 foo QEMU NVMe Ctrl
2 268.44 MB / 268.44 MB 512 B + 0 B 1.0
/dev/nvme0n3 foo QEMU NVMe Ctrl
3 268.44 MB / 268.44 MB 512 B + 0 B 1.0
/dev/nvme0n4 foo QEMU NVMe Ctrl
4 268.44 MB / 268.44 MB 512 B + 0 B 1.0
root@vm:~# nvme detach-ns /dev/nvme0 --namespace-id=3 --controllers=0
detach-ns: Success, nsid:3
root@vm:~# nvme detach-ns /dev/nvme0 --namespace-id=4 --controllers=0
detach-ns: Success, nsid:4
root@vm:~# echo 1 > /sys/class/nvme/nvme0/rescan_controller
root@vm:~# nvme list
Node SN Model
Namespace Usage Format FW Rev
--------------------- --------------------
---------------------------------------- --------- --------------------------
---------------- --------
/dev/nvme0n1 foo QEMU NVMe Ctrl
1 268.44 MB / 268.44 MB 512 B + 0 B 1.0
/dev/nvme0n2 foo QEMU NVMe Ctrl
2 268.44 MB / 268.44 MB 512 B + 0 B 1.0
Thanks,
Minwoo Im (6):
hw/block/nvme: support namespace detach
hw/block/nvme: fix namespaces array to 1-based
hw/block/nvme: fix allocated namespace list to 256
hw/block/nvme: support allocated namespace type
hw/block/nvme: refactor nvme_select_ns_iocs
hw/block/nvme: support namespace attachment command
hw/block/nvme-ns.c | 1 +
hw/block/nvme-ns.h | 1 +
hw/block/nvme-subsys.h | 28 +++++-
hw/block/nvme.c | 199 ++++++++++++++++++++++++++++++++++-------
hw/block/nvme.h | 33 +++++++
hw/block/trace-events | 2 +
include/block/nvme.h | 5 ++
7 files changed, 234 insertions(+), 35 deletions(-)
--
2.17.1
