Commit Graph

4 Commits

Author SHA1 Message Date
Xiaodong Liu
3a6ff82760 nbd: fix hidden danger caused by stop rpc
If occasionally there is unflushed data in kernel,
nbd disconnect ioctl will not return, until these
data are flushed. spdk_nbd_disk should process these
data in flushing.
But at present, spdk_nbd_disk is running on a some
reactor with rpc. It is a hidden danger of deadlock.

Change-Id: I2850105dff78f09f0e1b3c0a570dbbf7efdb469e
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/391707
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
2017-12-18 12:50:31 -05:00
Xiaodong Liu
1170628e4f nbd: add get_nbd_disks RPC
At present, get_nbd_disks RPC can receive info
about SPDK exported nbd devices and corresponding
bdev names.

Change-Id: I04390c7faa6f698a703a599a152cff65fc8be546
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/390610
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
2017-12-08 12:32:05 -05:00
Xiaodong Liu
deddb8d831 nbd: add nbd start rpc
Multiple nbd disks can be enabled by it. These
created nbd disks can only be running on app start
core at present.
Stop running spdk_nbd_disk by nbd subsystem_fini

Example nbd start rpc request:
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "start_nbd_disk",
  "params": {
    "bdev_name": "AIO1",
    "nbd_device": "/dev/nbd1"
  }
}

Change-Id: I426a10e2fe709f1862e44a7b75318ccb83517b3e
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/390344
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-12-07 16:23:19 -05:00
Xiaodong Liu
b93d767fe8 nbd: add nbd stop rpc
Use soft-disconnection to stop nbd disk
Examople RPC request:
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "stop_nbd_disk",
  "params": {
    "nbd_device": "/dev/nbd0"
  }
}

Change-Id: I3d9161635b4422bbb9895914a03483dbaa6b6386
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/389781
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
2017-12-07 16:23:19 -05:00