Enhance RPC method start_nbd_disk to take nbd_device as
one optional parameter. If it is not assigned, automaticly
choose an available nbd device path from /dev/nbd0 to
/dev/nbdN.
For github issue #324:
https://github.com/spdk/spdk/issues/324
Change-Id: I72c064d8bd476df342f5aa0af4d6120eb021c7ed
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/440453
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Use NBD_SET_SOCK to check whether the nbd device is setup
by other process or whether nbd kernel module is ready
before other nbd ioctl operations. This can avoid bad
influence to the nbd device setup by other process.
Change-Id: Ic12acbfddb8c4388e25731c39159b1ce559b8f23
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/444805
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
The ioctl NBD_SET_SOCK can return EBUSY on conditions not
only the kernel module hasn't loaded entirely yet, but
also the nbd device is setup by another process, which will
lead the poller's infinite polling.
This patch will wait only 1 second if device is busy.
Change-Id: I8b1cfab725cba180f774a57ced3fa4ba81da2037
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/c/444804
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Minor cleanup just to make sure they are consistently <= 0.
Change-Id: I8427fd201e60e3f8ebbcf4929eb58ca164910623
Signed-off-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/434324
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
The ioctl NBD_SET_SOCK can return EBUSY if the kernel module
hasn't loaded entirely yet. Wait for it to become ready.
Change-Id: If3c6d0d8bb678ef8cab0efc1c5e800e95e19133e
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/433939
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This is going to need to wait for the kernel module
to load in the future, so split the function in
half.
Change-Id: I872d000acd4fc25737d5f50c8e0ae33641a6d7fa
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/433938
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Add a callback to spdk_nbd_start so that it can complete
asynchronously. As of this patch, it always calls the
callback immediately.
Change-Id: I6156fb203145362afa5e4102183b6cf143051c0c
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/433937
Tested-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
according to commit:
bdev: add spdk_bdev_queue_io_wait
This patch will make io_wait to support nbd
Change-Id: I9c8a6f5d20afbada45cedffe9d49846a992d2581
Signed-off-by: Ni Xun <nixun@baidu.com>
Signed-off-by: Li Lin <lilin24@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/425594
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Consolidating multiptle reinsertions into a place will make the logic
a little cleaner.
Change-Id: Iab7e9f8e7dcdebbec9d51e151b1d838567c1dcc4
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/427441
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This patch fixes the following scan build failure.
nbd.c:697:6: warning: Use of memory after it is freed
if (io->state == NBD_IO_XMIT_RESP) {
^~~~~~~~~
Change-Id: Icba8b509604b064bff36d6ef63ecf02617ad7666
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/427366
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Events are part of the SPDK event framework and should be
isolated inside lib/event.
Change-Id: I8e9a5250bcbb9dd891f98df3177a6b5370a65fe3
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/424270
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Change-Id: I6babd4cf990bf19b510db88bdfb0ca81e29d9252
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/414700
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Madhu Pai <mpai@netapp.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
This will allow us to make the start_nbd_disk method choose an available
/dev/nbd* node automatically in an upcoming commit.
Change-Id: I3c6eb67e7e0c513212eba17139fd0cc96bf9b6dd
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/413847
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Change-Id: Ie56d5908af306eec75a360a7ce6078ba93bb2f4f
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/411746
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Add state_mask to each RPC method and state to RPC server, respectively.
State mask of RPC method is set at registration. State of RPC server
is changed according to the state of the SPDK.
When any RPC method is recieved, if the bit of the RPC server is on in
the state mask of the RPC method, it is allowed. Otherwise, it is
rejected.
When any RPC is rejected by state_mask control, the new error code
is returned to describe the error clearly.
Change-Id: I84e52b8725a286e9329d61c56f498aa2c8664ec1
Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Reviewed-on: https://review.gerrithub.io/407397
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
We need to use arrays here.
Change-Id: Ibca72f9780b057fd4349ee0d4daa1322779efc88
Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-on: https://review.gerrithub.io/409026
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Return NULL on resource failure (calloc) instead of
abort()'ing in static nbd function and check result
returning an errno, in that case, further up the call
chain.
Change-Id: If95f8db745fa77c76c415a1aa54c5338c270628f
Signed-off-by: Lance Hartmann <lance.hartmann@oracle.com>
Reviewed-on: https://review.gerrithub.io/403588
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This will be used to track time used in pollers - each poller can now
indicate if it found any work to do or not.
For cases where it was obvious and the infrastructure was already in
place, existing pollers have been modified to return 0 or a positive
value to indicate whether work was done. Other pollers have been
modified to return -1 by default, indicating that the poller isn't
indicating anything about whether work was performed. This will allow
us to find un-annotated pollers easily in the future and fix them
incrementally.
Change-Id: Ifebfa56604a38434fac5c76ba7263267574ff199
Signed-off-by: Roman Sudarikov <roman.sudarikov@intel.com>
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/391042
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Previous nbd implementation only processes one I/O at a time.
This patch increases spdk_nbd_disk io queue-depth.
lists are added to accommodate and coordinate overplapped nbd_io.
Change-Id: I3bda2c957a561b884ebfe9550b7cb6f3c991aef8
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/392609
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Apply a state for nbd io instead of using flag
bits like payload_in_progress and resp_in_progress.
Change-Id: I331567f7c4d7a6a886a145390a8b1e4db0f6040c
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/392175
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
If spdk_nbd_stop is called because of socket error,
ioctl of NBD_CLEAR_QUE and NBD_CLEAR_SOCK may be blocked
which will cause deadlock.
close(kernel_sp_fd/spdk_sp_fd) first, then nbd kernel
module will not block them .
Change-Id: I9527d74986cbd2b6188b9a91154de8b0b85d2836
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/393581
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This patch remove need for additional buffer when translating error code
to string.
Change-Id: Iaa60088b5c450581d3cdddbb425119b17d55a44b
Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/386114
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
At present, close(dev_fd) is always executed before the
return of ioctl(nbd->dev_fd, NBD_DO_IT). So when executing
these 2 ioctl commands, dev_fd is already closed.
Change-Id: I6fce73c440972af91f662f24c1fbca51a7b95d61
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/391708
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>
Change-Id: I964b7a37fcb641a610d518a02841b25913c5be2e
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/391733
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
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>
Reduce the log level of the disconnection message to INFO (this is a
normal occurrence when a connection is shut down), reword the message
for clarity, add a newline, and convert the error number to a string.
Also replace the printf() in spdk_nbd_start() with a SPDK log message.
Change-Id: I35e493100e63f84a9b7257c6f84dad77e9a0d335
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/391025
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Send all of the initialization ioctls from the SPDK thread running
spdk_nbd_start(), rather than in the pthread spawned to handle the
blocking NBD_DO_IT ioctl.
This allows the parameter to the pthread to be a single value (dev_fd),
rather than a pointer to the whole spdk_nbd_disk, which fixes a race on
shutdown where the main thread is freeing the spdk_nbd_disk while the
kernel thread is accessing nbd->dev_fd to send the cleanup ioctls.
Change-Id: Ibe5ca4abac97ac567b294da1f8a92f12eece45b8
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/391021
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
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>
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>
Record multiple nbd-disks by linking them into
g_spdk_nbd. Multiple nbd-disks cat be created or
stopped by upcoming nbd RPC.
Change-Id: I868d07d33981c94c1f06a1b31cf55e91d9df4fa8
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/390170
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Upcoming nbd RPC functions need to track nbd_path.
Export spdk_nbd_disk's nbd_path and bdev_name by
short functions, and list these functions into
nbd_internal.h
Change-Id: I0ca021a5c83e860ad7513b89c9c7783722ab875a
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/390343
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: Changpeng Liu <changpeng.liu@intel.com>
Add g_spdk_nbd to record multi-nbd-disk in the
future. nbd subsystem will be used to init and
finish g_spdk_nbd and its linked spdk_nbd_disk.
Change-Id: Ia67caa57b9920d0080f8b2fa1c8e87615803e5fe
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/390097
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: Changpeng Liu <changpeng.liu@intel.com>
nbd poller is put into spdk_nbd_disk.
nbd test app no longer needs to process spdk_bdev.
This enables upcomming patches to move nbd test app
functionality to SPDK library.
Change-Id: I1b563a49dc9488e8dcc20706be82b17fdbd07ff1
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/390093
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Some nbd io type has no payload, like NBD_CMD_DISC.
Change-Id: I17babf625f51d32bf07fa7a9b6a7396660b39cd5
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/389779
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
There are two ways to set stockets to nonblocking type:
- ioctl with FIONBIO
- fcntl with O_NONBLOCK
Those two should be equivalent for sockets used in SPDK.
During testing it was shown that VPP interprets only
the second type, so this patch changes all occurences of it.
When here, more descriptive error logs were set in case of
failure.
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: Ifa5b30e3a4fa04fe23f41fa2ae9dab4b01dd7d3c
Reviewed-on: https://review.gerrithub.io/388816
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Using pthead_detach to let system take back the resources owned
by SPDK created thread for nbd kernel module.
Change-Id: I39f3c0b60ecf57f3227a7b4733a0f144a6e169c5
Signed-off-by: Xiaodong Liu <xiaodong.liu@intel.com>
Reviewed-on: https://review.gerrithub.io/388722
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: <shuhei.matsumoto.xt@hitachi.com>
Using pthread_create is much cleaner, and avoids race
conditions related to the forked process sharing memory
with the primary process. Specifically this fixes
a double spdk_event_call() of the shutdown event - one
from each process. The primary process may have already
recycled the shutdown event, and when the forked process
calls it again, hilarity ensues.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I3e4b77b8b380a8fa0227b770758099bcee0ef35b
Reviewed-on: https://review.gerrithub.io/388520
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
dev_fd => fd for /dev/nbdX device node
spdk_sp_fd => fd that SPDK will use to poll for new
I/O requests from the kernel nbd thread
kernel_sp_fd => fd passed to the kernel to send I/O
to SPDK
This enables an upcoming patch to switch from using
fork() to pthread_create().
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I0840a35eb1ba12810b7fc12775ee0df9ad3d99f9
Reviewed-on: https://review.gerrithub.io/388519
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
There is a race condition here, where kernel could have
outstanding I/O to nbd device at the same time we terminate
the nbd application. In this case, we cannot free the
spdk_nbd_disk since it contains the io structure that
will be referenced when the SPDK poller completes one
of those I/O.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I1bde240af904957f4d2bfa358dc673105d266986
Reviewed-on: https://review.gerrithub.io/385927
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
clang 4.0 introduced a new warning, -Waddress-of-packed-member, which
triggers on a couple of spots in NBD and NVMf. Fix them up to silence
the warnings.
Change-Id: I134618f93528ea9a3d08050c34056670a58abdab
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/377441
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
replaces all references to strerror in the spdk lib directory with
references to the thread safe strerror_r
Change-Id: I80d946cce3299007ee10500b93f7e1c8e503ee41
Signed-off-by: Seth Howell <seth.howell@intel.com>
Reviewed-on: https://review.gerrithub.io/374012
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>
Change-Id: Ib6245e981d550e951a518176730a0e8d88378207
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/372341
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This is far simpler, although it does limit the bdev
layer to unmapped just one range per command. In practice,
all of our code reports limits of just one range per command
anyway.
Change-Id: I99247ab349fe85b9925769e965833b06708d0d70
Signed-off-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-on: https://review.gerrithub.io/370382
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This allows the library user the flexibility to use a different
threading model.
It also provides a way to indicate when the connection is closed so the
app can cleanly shut down.
Change-Id: Ibc196c0b8334fcb8f50d0233def16c6acf3c90d6
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>
Reviewed-on: https://review.gerrithub.io/372377
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
This prepares for enabling nbd mounting as a service within existing
applications.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I225ae20dc86b2d70a1a39a325e754b22f34feaee
Reviewed-on: https://review.gerrithub.io/369674
Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
