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Re: [Qemu-devel] [PATCH v7 1/2] block/vxhs.c: Add support for a new bloc
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From: |
Jeff Cody |
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Subject: |
Re: [Qemu-devel] [PATCH v7 1/2] block/vxhs.c: Add support for a new block device type called "vxhs" |
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Date: |
Wed, 8 Feb 2017 17:21:42 -0500 |
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User-agent: |
Mutt/1.5.24 (2015-08-30) |
On Tue, Feb 07, 2017 at 08:18:13PM -0800, Ashish Mittal wrote:
> From: Ashish Mittal <address@hidden>
>
> Source code for the qnio library that this code loads can be downloaded from:
> https://github.com/VeritasHyperScale/libqnio.git
>
What branch does this use for libqnio? I was under the impression that v7
of this series was going to work and test against the latest SSL branch
upstream, but that doesn't appear to be the case - there are API differences
and this code can't compile against the 'securify' branch on
https://github.com/VeritasHyperScale/libqnio.git
So some questions and thoughts around this:
1. If the target libqnio library version is essentially what it is on the
libqnio 'securify' branch, then obviously this patch series can't be in a
merge-ready state, since its API usage is (at the very least) stale;
2. It is getting very late (compared to feature freeze) to have patches that
can't be tested or compiled against the intended libqnio release. Do you
know exactly what the API differences are and the impact this has on this
series? If so, can you list what that is, and/or maybe post a quick v8?
3. Or, perhaps the API on the 'securify' libqnio branch is not stable. If
that is the case, I guess there is no choice but to wait for that to
stabilize before posting a v8+ patch series that uses the API.
I'll go ahead and review this series on its own merits against the libqnio
master branch, but I wanted to point that out now in case you are able to do
anything in point 2. The rest of my review will be in subsequent email(s).
-Jeff
> Sample command line using JSON syntax:
> ./x86_64-softmmu/qemu-system-x86_64 -name instance-00000008 -S -vnc 0.0.0.0:0
> -k en-us -vga cirrus -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x5
> -msg timestamp=on
> 'json:{"driver":"vxhs","vdisk-id":"c3e9095a-a5ee-4dce-afeb-2a59fb387410",
> "server":{"host":"172.172.17.4","port":"9999"}}'
>
> Sample command line using URI syntax:
> qemu-img convert -f raw -O raw -n
> /var/lib/nova/instances/_base/0c5eacd5ebea5ed914b6a3e7b18f1ce734c386ad
> vxhs://192.168.0.1:9999/c6718f6b-0401-441d-a8c3-1f0064d75ee0
>
> Signed-off-by: Ashish Mittal <address@hidden>
> ---
> TODO:
> (1) valgrind report to follow soon.
> (2) Security implementation for libqnio present in branch "securify".
> QEMU patch will use this once it gets merged to libqnio master.
> Please use master for building libqnio and testing with this patch.
> (3) Rename libqnio to libvxhs. Changes ready in branch "securify".
>
> v7 changelog:
> (1) IO failover code has moved out to the libqnio library.
> (2) Fixes for issues reported by Stefan on v6.
> (3) Incorporated the QEMUBH patch provided by Stefan.
> This is a replacement for the pipe mechanism used earlier.
> (4) Fixes to the buffer overflows reported in libqnio.
> (5) Input validations in vxhs.c to prevent any buffer overflows for
> arguments passed to libqnio.
>
> v6 changelog:
> (1) Added qemu-iotests for VxHS as a new patch in the series.
> (2) Replaced release version from 2.8 to 2.9 in block-core.json.
>
> v5 changelog:
> (1) Incorporated v4 review comments.
>
> v4 changelog:
> (1) Incorporated v3 review comments on QAPI changes.
> (2) Added refcounting for device open/close.
> Free library resources on last device close.
>
> v3 changelog:
> (1) Added QAPI schema for the VxHS driver.
>
> v2 changelog:
> (1) Changes done in response to v1 comments.
>
> block/Makefile.objs | 2 +
> block/trace-events | 16 ++
> block/vxhs.c | 488
> +++++++++++++++++++++++++++++++++++++++++++++++++++
> configure | 40 +++++
> qapi/block-core.json | 20 ++-
> 5 files changed, 564 insertions(+), 2 deletions(-)
> create mode 100644 block/vxhs.c
>
> diff --git a/block/Makefile.objs b/block/Makefile.objs
> index c6bd14e..75675b4 100644
> --- a/block/Makefile.objs
> +++ b/block/Makefile.objs
> @@ -19,6 +19,7 @@ block-obj-$(CONFIG_LIBNFS) += nfs.o
> block-obj-$(CONFIG_CURL) += curl.o
> block-obj-$(CONFIG_RBD) += rbd.o
> block-obj-$(CONFIG_GLUSTERFS) += gluster.o
> +block-obj-$(CONFIG_VXHS) += vxhs.o
> block-obj-$(CONFIG_ARCHIPELAGO) += archipelago.o
> block-obj-$(CONFIG_LIBSSH2) += ssh.o
> block-obj-y += accounting.o dirty-bitmap.o
> @@ -39,6 +40,7 @@ rbd.o-cflags := $(RBD_CFLAGS)
> rbd.o-libs := $(RBD_LIBS)
> gluster.o-cflags := $(GLUSTERFS_CFLAGS)
> gluster.o-libs := $(GLUSTERFS_LIBS)
> +vxhs.o-libs := $(VXHS_LIBS)
> ssh.o-cflags := $(LIBSSH2_CFLAGS)
> ssh.o-libs := $(LIBSSH2_LIBS)
> archipelago.o-libs := $(ARCHIPELAGO_LIBS)
> diff --git a/block/trace-events b/block/trace-events
> index 0bc5c0a..d5eca93 100644
> --- a/block/trace-events
> +++ b/block/trace-events
> @@ -110,3 +110,19 @@ qed_aio_write_data(void *s, void *acb, int ret, uint64_t
> offset, size_t len) "s
> qed_aio_write_prefill(void *s, void *acb, uint64_t start, size_t len,
> uint64_t offset) "s %p acb %p start %"PRIu64" len %zu offset %"PRIu64
> qed_aio_write_postfill(void *s, void *acb, uint64_t start, size_t len,
> uint64_t offset) "s %p acb %p start %"PRIu64" len %zu offset %"PRIu64
> qed_aio_write_main(void *s, void *acb, int ret, uint64_t offset, size_t len)
> "s %p acb %p ret %d offset %"PRIu64" len %zu"
> +
> +# block/vxhs.c
> +vxhs_iio_callback(int error) "ctx is NULL: error %d"
> +vxhs_iio_callback_chnfail(int err, int error) "QNIO channel failed, no i/o
> %d, %d"
> +vxhs_iio_callback_unknwn(int opcode, int err) "unexpected opcode %d, errno
> %d"
> +vxhs_aio_rw_invalid(int req) "Invalid I/O request iodir %d"
> +vxhs_aio_rw_ioerr(char *guid, int iodir, uint64_t size, uint64_t off, void
> *acb, int ret, int err) "IO ERROR (vDisk %s) FOR : Read/Write = %d size = %lu
> offset = %lu ACB = %p. Error = %d, errno = %d"
> +vxhs_get_vdisk_stat_err(char *guid, int ret, int err) "vDisk (%s) stat ioctl
> failed, ret = %d, errno = %d"
> +vxhs_get_vdisk_stat(char *vdisk_guid, uint64_t vdisk_size) "vDisk %s stat
> ioctl returned size %lu"
> +vxhs_qnio_iio_open(const char *ip) "Failed to connect to storage agent on
> host-ip %s"
> +vxhs_complete_aio(void *acb, uint64_t ret) "aio failed acb %p ret %ld"
> +vxhs_parse_uri_filename(const char *filename) "URI passed via
> bdrv_parse_filename %s"
> +vxhs_qemu_init_vdisk(const char *vdisk_id) "vdisk-id from json %s"
> +vxhs_parse_uri_hostinfo(int num, char *host, int port) "Host %d: IP %s, Port
> %d"
> +vxhs_qemu_init(char *of_vsa_addr, int port) "Adding host %s:%d to
> BDRVVXHSState"
> +vxhs_close(char *vdisk_guid) "Closing vdisk %s"
> diff --git a/block/vxhs.c b/block/vxhs.c
> new file mode 100644
> index 0000000..997474b
> --- /dev/null
> +++ b/block/vxhs.c
> @@ -0,0 +1,488 @@
> +/*
> + * QEMU Block driver for Veritas HyperScale (VxHS)
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or later.
> + * See the COPYING file in the top-level directory.
> + *
> + */
> +
> +#include "qemu/osdep.h"
> +#include <qnio/qnio_api.h>
> +#include <sys/param.h>
> +#include "block/block_int.h"
> +#include "qapi/qmp/qerror.h"
> +#include "qapi/qmp/qdict.h"
> +#include "qapi/qmp/qstring.h"
> +#include "trace.h"
> +#include "qemu/uri.h"
> +#include "qapi/error.h"
> +#include "qemu/uuid.h"
> +
> +#define VXHS_OPT_FILENAME "filename"
> +#define VXHS_OPT_VDISK_ID "vdisk-id"
> +#define VXHS_OPT_SERVER "server"
> +#define VXHS_OPT_HOST "host"
> +#define VXHS_OPT_PORT "port"
> +
> +static int lib_init_failed;
> +
> +typedef enum {
> + VDISK_AIO_READ,
> + VDISK_AIO_WRITE,
> +} VDISKAIOCmd;
> +
> +/*
> + * HyperScale AIO callbacks structure
> + */
> +typedef struct VXHSAIOCB {
> + BlockAIOCB common;
> + int err;
> + QEMUIOVector *qiov;
> +} VXHSAIOCB;
> +
> +typedef struct VXHSvDiskHostsInfo {
> + void *dev_handle; /* Device handle */
> + char *host; /* Host name or IP */
> + int port; /* Host's port number */
> +} VXHSvDiskHostsInfo;
> +
> +/*
> + * Structure per vDisk maintained for state
> + */
> +typedef struct BDRVVXHSState {
> + VXHSvDiskHostsInfo vdisk_hostinfo; /* Per host info */
> + char *vdisk_guid;
> +} BDRVVXHSState;
> +
> +static void vxhs_complete_aio_bh(void *opaque)
> +{
> + VXHSAIOCB *acb = opaque;
> + BlockCompletionFunc *cb = acb->common.cb;
> + void *cb_opaque = acb->common.opaque;
> + int ret = 0;
> +
> + if (acb->err != 0) {
> + trace_vxhs_complete_aio(acb, acb->err);
> + ret = (-EIO);
> + }
> +
> + qemu_aio_unref(acb);
> + cb(cb_opaque, ret);
> +}
> +
> +/*
> + * Called from a libqnio thread
> + */
> +static void vxhs_iio_callback(void *ctx, uint32_t opcode, uint32_t error)
> +{
> + VXHSAIOCB *acb = NULL;
> +
> + switch (opcode) {
> + case IRP_READ_REQUEST:
> + case IRP_WRITE_REQUEST:
> +
> + /*
> + * ctx is VXHSAIOCB*
> + * ctx is NULL if error is QNIOERROR_CHANNEL_HUP
> + */
> + if (ctx) {
> + acb = ctx;
> + } else {
> + trace_vxhs_iio_callback(error);
> + goto out;
> + }
> +
> + if (error) {
> + if (!acb->err) {
> + acb->err = error;
> + }
> + trace_vxhs_iio_callback(error);
> + }
> +
> + aio_bh_schedule_oneshot(bdrv_get_aio_context(acb->common.bs),
> + vxhs_complete_aio_bh, acb);
> + break;
> +
> + default:
> + if (error == QNIOERROR_HUP) {
> + /*
> + * Channel failed, spontaneous notification,
> + * not in response to I/O
> + */
> + trace_vxhs_iio_callback_chnfail(error, errno);
> + } else {
> + trace_vxhs_iio_callback_unknwn(opcode, error);
> + }
> + break;
> + }
> +out:
> + return;
> +}
> +
> +static QemuOptsList runtime_opts = {
> + .name = "vxhs",
> + .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
> + .desc = {
> + {
> + .name = VXHS_OPT_FILENAME,
> + .type = QEMU_OPT_STRING,
> + .help = "URI to the Veritas HyperScale image",
> + },
> + {
> + .name = VXHS_OPT_VDISK_ID,
> + .type = QEMU_OPT_STRING,
> + .help = "UUID of the VxHS vdisk",
> + },
> + { /* end of list */ }
> + },
> +};
> +
> +static QemuOptsList runtime_tcp_opts = {
> + .name = "vxhs_tcp",
> + .head = QTAILQ_HEAD_INITIALIZER(runtime_tcp_opts.head),
> + .desc = {
> + {
> + .name = VXHS_OPT_HOST,
> + .type = QEMU_OPT_STRING,
> + .help = "host address (ipv4 addresses)",
> + },
> + {
> + .name = VXHS_OPT_PORT,
> + .type = QEMU_OPT_NUMBER,
> + .help = "port number on which VxHSD is listening (default 9999)",
> + .def_value_str = "9999"
> + },
> + { /* end of list */ }
> + },
> +};
> +
> +/*
> + * Parse the incoming URI and populate *options with the host information.
> + * URI syntax has the limitation of supporting only one host info.
> + * To pass multiple host information, use the JSON syntax.
> + */
> +static int vxhs_parse_uri(const char *filename, QDict *options)
> +{
> + URI *uri = NULL;
> + char *hoststr, *portstr;
> + char *port;
> + int ret = 0;
> +
> + trace_vxhs_parse_uri_filename(filename);
> + uri = uri_parse(filename);
> + if (!uri || !uri->server || !uri->path) {
> + uri_free(uri);
> + return -EINVAL;
> + }
> +
> + hoststr = g_strdup(VXHS_OPT_SERVER".host");
> + qdict_put(options, hoststr, qstring_from_str(uri->server));
> + g_free(hoststr);
> +
> + portstr = g_strdup(VXHS_OPT_SERVER".port");
> + if (uri->port) {
> + port = g_strdup_printf("%d", uri->port);
> + qdict_put(options, portstr, qstring_from_str(port));
> + g_free(port);
> + }
> + g_free(portstr);
> +
> + if (strstr(uri->path, "vxhs") == NULL) {
> + qdict_put(options, "vdisk-id", qstring_from_str(uri->path));
> + }
> +
> + trace_vxhs_parse_uri_hostinfo(1, uri->server, uri->port);
> + uri_free(uri);
> +
> + return ret;
> +}
> +
> +static void vxhs_parse_filename(const char *filename, QDict *options,
> + Error **errp)
> +{
> + if (qdict_haskey(options, "vdisk-id") || qdict_haskey(options,
> "server")) {
> + error_setg(errp, "vdisk-id/server and a file name may not be
> specified "
> + "at the same time");
> + return;
> + }
> +
> + if (strstr(filename, "://")) {
> + int ret = vxhs_parse_uri(filename, options);
> + if (ret < 0) {
> + error_setg(errp, "Invalid URI. URI should be of the form "
> + " vxhs://<host_ip>:<port>/<vdisk-id>");
> + }
> + }
> +}
> +
> +static int vxhs_open(BlockDriverState *bs, QDict *options,
> + int bdrv_flags, Error **errp)
> +{
> + BDRVVXHSState *s = bs->opaque;
> + void *dev_handlep = NULL;
> + QDict *backing_options = NULL;
> + QemuOpts *opts, *tcp_opts;
> + char *of_vsa_addr = NULL;
> + Error *local_err = NULL;
> + const char *vdisk_id_opt;
> + const char *server_host_opt;
> + char *str = NULL;
> + int ret = 0;
> +
> + if (lib_init_failed) {
> + return -ENODEV;
> + }
> + opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
> + qemu_opts_absorb_qdict(opts, options, &local_err);
> + if (local_err) {
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + /* vdisk-id is the disk UUID */
> + vdisk_id_opt = qemu_opt_get(opts, VXHS_OPT_VDISK_ID);
> + if (!vdisk_id_opt) {
> + error_setg(&local_err, QERR_MISSING_PARAMETER, VXHS_OPT_VDISK_ID);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + /* vdisk-id may contain a leading '/' */
> + if (strlen(vdisk_id_opt) > UUID_FMT_LEN + 1) {
> + error_setg(errp, "vdisk-id cannot be more than %d characters",
> + UUID_FMT_LEN);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + s->vdisk_guid = g_strdup(vdisk_id_opt);
> + trace_vxhs_qemu_init_vdisk(vdisk_id_opt);
> +
> + str = g_strdup_printf(VXHS_OPT_SERVER".");
> + qdict_extract_subqdict(options, &backing_options, str);
> +
> + /* Create opts info from runtime_tcp_opts list */
> + tcp_opts = qemu_opts_create(&runtime_tcp_opts, NULL, 0, &error_abort);
> + qemu_opts_absorb_qdict(tcp_opts, backing_options, &local_err);
> + if (local_err) {
> + qdict_del(backing_options, str);
> + qemu_opts_del(tcp_opts);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + server_host_opt = qemu_opt_get(tcp_opts, VXHS_OPT_HOST);
> + if (!server_host_opt) {
> + error_setg(&local_err, QERR_MISSING_PARAMETER,
> + VXHS_OPT_SERVER"."VXHS_OPT_HOST);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + if (strlen(server_host_opt) > MAXHOSTNAMELEN) {
> + error_setg(errp, "server.host cannot be more than %d characters",
> + MAXHOSTNAMELEN);
> + ret = -EINVAL;
> + goto out;
> + }
> +
> + s->vdisk_hostinfo.host = g_strdup(server_host_opt);
> +
> + s->vdisk_hostinfo.port = g_ascii_strtoll(qemu_opt_get(tcp_opts,
> + VXHS_OPT_PORT),
> + NULL, 0);
> +
> + trace_vxhs_qemu_init(s->vdisk_hostinfo.host,
> + s->vdisk_hostinfo.port);
> +
> + qdict_del(backing_options, str);
> + qemu_opts_del(tcp_opts);
> +
> + of_vsa_addr = g_strdup_printf("of://%s:%d",
> + s->vdisk_hostinfo.host,
> + s->vdisk_hostinfo.port);
> +
> + /*
> + * Open qnio channel to storage agent if not opened before.
> + */
> + dev_handlep = iio_open(of_vsa_addr, s->vdisk_guid, 0);
> + if (dev_handlep == NULL) {
> + trace_vxhs_qnio_iio_open(of_vsa_addr);
> + ret = -ENODEV;
> + goto out;
> + }
> + s->vdisk_hostinfo.dev_handle = dev_handlep;
> +
> +out:
> + g_free(str);
> + g_free(of_vsa_addr);
> + QDECREF(backing_options);
> + qemu_opts_del(opts);
> +
> + if (ret < 0) {
> + error_propagate(errp, local_err);
> + g_free(s->vdisk_hostinfo.host);
> + g_free(s->vdisk_guid);
> + s->vdisk_guid = NULL;
> + errno = -ret;
> + }
> +
> + return ret;
> +}
> +
> +static const AIOCBInfo vxhs_aiocb_info = {
> + .aiocb_size = sizeof(VXHSAIOCB)
> +};
> +
> +/*
> + * This allocates QEMU-VXHS callback for each IO
> + * and is passed to QNIO. When QNIO completes the work,
> + * it will be passed back through the callback.
> + */
> +static BlockAIOCB *vxhs_aio_rw(BlockDriverState *bs, int64_t sector_num,
> + QEMUIOVector *qiov, int nb_sectors,
> + BlockCompletionFunc *cb, void *opaque,
> + VDISKAIOCmd iodir)
> +{
> + VXHSAIOCB *acb = NULL;
> + BDRVVXHSState *s = bs->opaque;
> + size_t size;
> + uint64_t offset;
> + int iio_flags = 0;
> + int ret = 0;
> + void *dev_handle = s->vdisk_hostinfo.dev_handle;
> +
> + offset = sector_num * BDRV_SECTOR_SIZE;
> + size = nb_sectors * BDRV_SECTOR_SIZE;
> + acb = qemu_aio_get(&vxhs_aiocb_info, bs, cb, opaque);
> +
> + /*
> + * Initialize VXHSAIOCB.
> + */
> + acb->err = 0;
> + acb->qiov = qiov;
> +
> + iio_flags = IIO_FLAG_ASYNC;
> +
> + switch (iodir) {
> + case VDISK_AIO_WRITE:
> + ret = iio_writev(dev_handle, acb, qiov->iov, qiov->niov,
> + offset, (uint64_t)size, iio_flags);
> + break;
> + case VDISK_AIO_READ:
> + ret = iio_readv(dev_handle, acb, qiov->iov, qiov->niov,
> + offset, (uint64_t)size, iio_flags);
> + break;
> + default:
> + trace_vxhs_aio_rw_invalid(iodir);
> + goto errout;
> + }
> +
> + if (ret != 0) {
> + trace_vxhs_aio_rw_ioerr(s->vdisk_guid, iodir, size, offset,
> + acb, ret, errno);
> + goto errout;
> + }
> + return &acb->common;
> +
> +errout:
> + qemu_aio_unref(acb);
> + return NULL;
> +}
> +
> +static BlockAIOCB *vxhs_aio_readv(BlockDriverState *bs,
> + int64_t sector_num, QEMUIOVector *qiov,
> + int nb_sectors,
> + BlockCompletionFunc *cb, void *opaque)
> +{
> + return vxhs_aio_rw(bs, sector_num, qiov, nb_sectors, cb,
> + opaque, VDISK_AIO_READ);
> +}
> +
> +static BlockAIOCB *vxhs_aio_writev(BlockDriverState *bs,
> + int64_t sector_num, QEMUIOVector *qiov,
> + int nb_sectors,
> + BlockCompletionFunc *cb, void *opaque)
> +{
> + return vxhs_aio_rw(bs, sector_num, qiov, nb_sectors,
> + cb, opaque, VDISK_AIO_WRITE);
> +}
> +
> +static void vxhs_close(BlockDriverState *bs)
> +{
> + BDRVVXHSState *s = bs->opaque;
> +
> + trace_vxhs_close(s->vdisk_guid);
> +
> + g_free(s->vdisk_guid);
> + s->vdisk_guid = NULL;
> +
> + /*
> + * Close vDisk device
> + */
> + if (s->vdisk_hostinfo.dev_handle) {
> + iio_close(s->vdisk_hostinfo.dev_handle);
> + s->vdisk_hostinfo.dev_handle = NULL;
> + }
> +
> + /*
> + * Free the dynamically allocated host string
> + */
> + g_free(s->vdisk_hostinfo.host);
> + s->vdisk_hostinfo.host = NULL;
> + s->vdisk_hostinfo.port = 0;
> +}
> +
> +static int64_t vxhs_get_vdisk_stat(BDRVVXHSState *s)
> +{
> + int64_t vdisk_size = -1;
> + int ret = 0;
> + void *dev_handle = s->vdisk_hostinfo.dev_handle;
> +
> + ret = iio_ioctl(dev_handle, IOR_VDISK_STAT, &vdisk_size, 0);
> + if (ret < 0) {
> + trace_vxhs_get_vdisk_stat_err(s->vdisk_guid, ret, errno);
> + return -EIO;
> + }
> +
> + trace_vxhs_get_vdisk_stat(s->vdisk_guid, vdisk_size);
> + return vdisk_size;
> +}
> +
> +/*
> + * Returns the size of vDisk in bytes. This is required
> + * by QEMU block upper block layer so that it is visible
> + * to guest.
> + */
> +static int64_t vxhs_getlength(BlockDriverState *bs)
> +{
> + BDRVVXHSState *s = bs->opaque;
> + int64_t vdisk_size;
> +
> + vdisk_size = vxhs_get_vdisk_stat(s);
> + if (vdisk_size < 0) {
> + return -EIO;
> + }
> +
> + return vdisk_size;
> +}
> +
> +static BlockDriver bdrv_vxhs = {
> + .format_name = "vxhs",
> + .protocol_name = "vxhs",
> + .instance_size = sizeof(BDRVVXHSState),
> + .bdrv_file_open = vxhs_open,
> + .bdrv_parse_filename = vxhs_parse_filename,
> + .bdrv_close = vxhs_close,
> + .bdrv_getlength = vxhs_getlength,
> + .bdrv_aio_readv = vxhs_aio_readv,
> + .bdrv_aio_writev = vxhs_aio_writev,
> +};
> +
> +static void bdrv_vxhs_init(void)
> +{
> + lib_init_failed = iio_init(QNIO_VERSION, vxhs_iio_callback);
> + bdrv_register(&bdrv_vxhs);
> +}
> +
> +block_init(bdrv_vxhs_init);
> diff --git a/configure b/configure
> index 6325339..ba9ad0a 100755
> --- a/configure
> +++ b/configure
> @@ -321,6 +321,7 @@ numa=""
> tcmalloc="no"
> jemalloc="no"
> replication="yes"
> +vxhs=""
>
> # parse CC options first
> for opt do
> @@ -1170,6 +1171,10 @@ for opt do
> ;;
> --enable-replication) replication="yes"
> ;;
> + --disable-vxhs) vxhs="no"
> + ;;
> + --enable-vxhs) vxhs="yes"
> + ;;
> *)
> echo "ERROR: unknown option $opt"
> echo "Try '$0 --help' for more information"
> @@ -1403,6 +1408,7 @@ disabled with --disable-FEATURE, default is enabled if
> available:
> tcmalloc tcmalloc support
> jemalloc jemalloc support
> replication replication support
> + vxhs Veritas HyperScale vDisk backend support
>
> NOTE: The object files are built at the place where configure is launched
> EOF
> @@ -4748,6 +4754,33 @@ if test "$modules" = "yes" && test "$LD_REL_FLAGS" =
> ""; then
> fi
>
> ##########################################
> +# Veritas HyperScale block driver VxHS
> +# Check if libqnio is installed
> +
> +if test "$vxhs" != "no" ; then
> + cat > $TMPC <<EOF
> +#include <stdint.h>
> +#include <qnio/qnio_api.h>
> +
> +void *vxhs_callback;
> +
> +int main(void) {
> + iio_init(QNIO_VERSION, vxhs_callback);
> + return 0;
> +}
> +EOF
> + vxhs_libs="-lqnio"
> + if compile_prog "" "$vxhs_libs" ; then
> + vxhs=yes
> + else
> + if test "$vxhs" = "yes" ; then
> + feature_not_found "vxhs block device" "Install libqnio See github"
> + fi
> + vxhs=no
> + fi
> +fi
> +
> +##########################################
> # End of CC checks
> # After here, no more $cc or $ld runs
>
> @@ -5114,6 +5147,7 @@ echo "tcmalloc support $tcmalloc"
> echo "jemalloc support $jemalloc"
> echo "avx2 optimization $avx2_opt"
> echo "replication support $replication"
> +echo "VxHS block device $vxhs"
>
> if test "$sdl_too_old" = "yes"; then
> echo "-> Your SDL version is too old - please upgrade to have SDL support"
> @@ -5729,6 +5763,12 @@ if test "$pthread_setname_np" = "yes" ; then
> echo "CONFIG_PTHREAD_SETNAME_NP=y" >> $config_host_mak
> fi
>
> +if test "$vxhs" = "yes" ; then
> + echo "CONFIG_VXHS=y" >> $config_host_mak
> + echo "VXHS_CFLAGS=$vxhs_cflags" >> $config_host_mak
> + echo "VXHS_LIBS=$vxhs_libs" >> $config_host_mak
> +fi
> +
> if test "$tcg_interpreter" = "yes"; then
> QEMU_INCLUDES="-I\$(SRC_PATH)/tcg/tci $QEMU_INCLUDES"
> elif test "$ARCH" = "sparc64" ; then
> diff --git a/qapi/block-core.json b/qapi/block-core.json
> index 932f5bb..f37df56 100644
> --- a/qapi/block-core.json
> +++ b/qapi/block-core.json
> @@ -2110,6 +2110,7 @@
> # @nfs: Since 2.8
> # @replication: Since 2.8
> # @ssh: Since 2.8
> +# @vxhs: Since 2.9
> #
> # Since: 2.0
> ##
> @@ -2119,7 +2120,7 @@
> 'host_device', 'http', 'https', 'luks', 'nbd', 'nfs', 'null-aio',
> 'null-co', 'parallels', 'qcow', 'qcow2', 'qed', 'quorum', 'raw',
> 'replication', 'ssh', 'vdi', 'vhdx', 'vmdk', 'vpc',
> - 'vvfat' ] }
> + 'vvfat','vxhs' ] }
>
> ##
> # @BlockdevOptionsFile:
> @@ -2744,6 +2745,20 @@
> 'data': { '*offset': 'int', '*size': 'int' } }
>
> ##
> +# @BlockdevOptionsVxHS:
> +#
> +# Driver specific block device options for VxHS
> +#
> +# @vdisk-id: UUID of VxHS volume
> +# @server: vxhs server IP, port
> +#
> +# Since: 2.9
> +##
> +{ 'struct': 'BlockdevOptionsVxHS',
> + 'data': { 'vdisk-id': 'str',
> + 'server': 'InetSocketAddress' } }
> +
> +##
> # @BlockdevOptions:
> #
> # Options for creating a block device. Many options are available for all
> @@ -2806,7 +2821,8 @@
> 'vhdx': 'BlockdevOptionsGenericFormat',
> 'vmdk': 'BlockdevOptionsGenericCOWFormat',
> 'vpc': 'BlockdevOptionsGenericFormat',
> - 'vvfat': 'BlockdevOptionsVVFAT'
> + 'vvfat': 'BlockdevOptionsVVFAT',
> + 'vxhs': 'BlockdevOptionsVxHS'
> } }
>
> ##
> --
> 1.8.3.1
>