--- /dev/null
+/*
+ * GlusterFS backend for QEMU
+ *
+ * Copyright (C) 2012 Bharata B Rao <bharata@linux.vnet.ibm.com>
+ *
+ * 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 <glusterfs/api/glfs.h>
+#include "block/block_int.h"
+#include "qemu/uri.h"
+
+typedef struct GlusterAIOCB {
+ int64_t size;
+ int ret;
+ QEMUBH *bh;
+ Coroutine *coroutine;
+ AioContext *aio_context;
+} GlusterAIOCB;
+
+typedef struct BDRVGlusterState {
+ struct glfs *glfs;
+ struct glfs_fd *fd;
+} BDRVGlusterState;
+
+typedef struct GlusterConf {
+ char *server;
+ int port;
+ char *volname;
+ char *image;
+ char *transport;
+} GlusterConf;
+
+static void qemu_gluster_gconf_free(GlusterConf *gconf)
+{
+ if (gconf) {
+ g_free(gconf->server);
+ g_free(gconf->volname);
+ g_free(gconf->image);
+ g_free(gconf->transport);
+ g_free(gconf);
+ }
+}
+
+static int parse_volume_options(GlusterConf *gconf, char *path)
+{
+ char *p, *q;
+
+ if (!path) {
+ return -EINVAL;
+ }
+
+ /* volume */
+ p = q = path + strspn(path, "/");
+ p += strcspn(p, "/");
+ if (*p == '\0') {
+ return -EINVAL;
+ }
+ gconf->volname = g_strndup(q, p - q);
+
+ /* image */
+ p += strspn(p, "/");
+ if (*p == '\0') {
+ return -EINVAL;
+ }
+ gconf->image = g_strdup(p);
+ return 0;
+}
+
+/*
+ * file=gluster[+transport]://[server[:port]]/volname/image[?socket=...]
+ *
+ * 'gluster' is the protocol.
+ *
+ * 'transport' specifies the transport type used to connect to gluster
+ * management daemon (glusterd). Valid transport types are
+ * tcp, unix and rdma. If a transport type isn't specified, then tcp
+ * type is assumed.
+ *
+ * 'server' specifies the server where the volume file specification for
+ * the given volume resides. This can be either hostname, ipv4 address
+ * or ipv6 address. ipv6 address needs to be within square brackets [ ].
+ * If transport type is 'unix', then 'server' field should not be specified.
+ * The 'socket' field needs to be populated with the path to unix domain
+ * socket.
+ *
+ * 'port' is the port number on which glusterd is listening. This is optional
+ * and if not specified, QEMU will send 0 which will make gluster to use the
+ * default port. If the transport type is unix, then 'port' should not be
+ * specified.
+ *
+ * 'volname' is the name of the gluster volume which contains the VM image.
+ *
+ * 'image' is the path to the actual VM image that resides on gluster volume.
+ *
+ * Examples:
+ *
+ * file=gluster://1.2.3.4/testvol/a.img
+ * file=gluster+tcp://1.2.3.4/testvol/a.img
+ * file=gluster+tcp://1.2.3.4:24007/testvol/dir/a.img
+ * file=gluster+tcp://[1:2:3:4:5:6:7:8]/testvol/dir/a.img
+ * file=gluster+tcp://[1:2:3:4:5:6:7:8]:24007/testvol/dir/a.img
+ * file=gluster+tcp://server.domain.com:24007/testvol/dir/a.img
+ * file=gluster+unix:///testvol/dir/a.img?socket=/tmp/glusterd.socket
+ * file=gluster+rdma://1.2.3.4:24007/testvol/a.img
+ */
+static int qemu_gluster_parseuri(GlusterConf *gconf, const char *filename)
+{
+ URI *uri;
+ QueryParams *qp = NULL;
+ bool is_unix = false;
+ int ret = 0;
+
+ uri = uri_parse(filename);
+ if (!uri) {
+ return -EINVAL;
+ }
+
+ /* transport */
+ if (!uri->scheme || !strcmp(uri->scheme, "gluster")) {
+ gconf->transport = g_strdup("tcp");
+ } else if (!strcmp(uri->scheme, "gluster+tcp")) {
+ gconf->transport = g_strdup("tcp");
+ } else if (!strcmp(uri->scheme, "gluster+unix")) {
+ gconf->transport = g_strdup("unix");
+ is_unix = true;
+ } else if (!strcmp(uri->scheme, "gluster+rdma")) {
+ gconf->transport = g_strdup("rdma");
+ } else {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ ret = parse_volume_options(gconf, uri->path);
+ if (ret < 0) {
+ goto out;
+ }
+
+ qp = query_params_parse(uri->query);
+ if (qp->n > 1 || (is_unix && !qp->n) || (!is_unix && qp->n)) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ if (is_unix) {
+ if (uri->server || uri->port) {
+ ret = -EINVAL;
+ goto out;
+ }
+ if (strcmp(qp->p[0].name, "socket")) {
+ ret = -EINVAL;
+ goto out;
+ }
+ gconf->server = g_strdup(qp->p[0].value);
+ } else {
+ gconf->server = g_strdup(uri->server ? uri->server : "localhost");
+ gconf->port = uri->port;
+ }
+
+out:
+ if (qp) {
+ query_params_free(qp);
+ }
+ uri_free(uri);
+ return ret;
+}
+
+static struct glfs *qemu_gluster_init(GlusterConf *gconf, const char *filename,
+ Error **errp)
+{
+ struct glfs *glfs = NULL;
+ int ret;
+ int old_errno;
+
+ ret = qemu_gluster_parseuri(gconf, filename);
+ if (ret < 0) {
+ error_setg(errp, "Usage: file=gluster[+transport]://[server[:port]]/"
+ "volname/image[?socket=...]");
+ errno = -ret;
+ goto out;
+ }
+
+ glfs = glfs_new(gconf->volname);
+ if (!glfs) {
+ goto out;
+ }
+
+ ret = glfs_set_volfile_server(glfs, gconf->transport, gconf->server,
+ gconf->port);
+ if (ret < 0) {
+ goto out;
+ }
+
+ /*
+ * TODO: Use GF_LOG_ERROR instead of hard code value of 4 here when
+ * GlusterFS makes GF_LOG_* macros available to libgfapi users.
+ */
+ ret = glfs_set_logging(glfs, "-", 4);
+ if (ret < 0) {
+ goto out;
+ }
+
+ ret = glfs_init(glfs);
+ if (ret) {
+ error_setg_errno(errp, errno,
+ "Gluster connection failed for server=%s port=%d "
+ "volume=%s image=%s transport=%s", gconf->server,
+ gconf->port, gconf->volname, gconf->image,
+ gconf->transport);
+
+ /* glfs_init sometimes doesn't set errno although docs suggest that */
+ if (errno == 0)
+ errno = EINVAL;
+
+ goto out;
+ }
+ return glfs;
+
+out:
+ if (glfs) {
+ old_errno = errno;
+ glfs_fini(glfs);
+ errno = old_errno;
+ }
+ return NULL;
+}
+
+static void qemu_gluster_complete_aio(void *opaque)
+{
+ GlusterAIOCB *acb = (GlusterAIOCB *)opaque;
+
+ qemu_bh_delete(acb->bh);
+ acb->bh = NULL;
+ qemu_coroutine_enter(acb->coroutine, NULL);
+}
+
+/*
+ * AIO callback routine called from GlusterFS thread.
+ */
+static void gluster_finish_aiocb(struct glfs_fd *fd, ssize_t ret, void *arg)
+{
+ GlusterAIOCB *acb = (GlusterAIOCB *)arg;
+
+ if (!ret || ret == acb->size) {
+ acb->ret = 0; /* Success */
+ } else if (ret < 0) {
+ acb->ret = ret; /* Read/Write failed */
+ } else {
+ acb->ret = -EIO; /* Partial read/write - fail it */
+ }
+
+ acb->bh = aio_bh_new(acb->aio_context, qemu_gluster_complete_aio, acb);
+ qemu_bh_schedule(acb->bh);
+}
+
+/* TODO Convert to fine grained options */
+static QemuOptsList runtime_opts = {
+ .name = "gluster",
+ .head = QTAILQ_HEAD_INITIALIZER(runtime_opts.head),
+ .desc = {
+ {
+ .name = "filename",
+ .type = QEMU_OPT_STRING,
+ .help = "URL to the gluster image",
+ },
+ { /* end of list */ }
+ },
+};
+
+static void qemu_gluster_parse_flags(int bdrv_flags, int *open_flags)
+{
+ assert(open_flags != NULL);
+
+ *open_flags |= O_BINARY;
+
+ if (bdrv_flags & BDRV_O_RDWR) {
+ *open_flags |= O_RDWR;
+ } else {
+ *open_flags |= O_RDONLY;
+ }
+
+ if ((bdrv_flags & BDRV_O_NOCACHE)) {
+ *open_flags |= O_DIRECT;
+ }
+}
+
+static int qemu_gluster_open(BlockDriverState *bs, QDict *options,
+ int bdrv_flags, Error **errp)
+{
+ BDRVGlusterState *s = bs->opaque;
+ int open_flags = 0;
+ int ret = 0;
+ GlusterConf *gconf = g_new0(GlusterConf, 1);
+ QemuOpts *opts;
+ Error *local_err = NULL;
+ const char *filename;
+
+ opts = qemu_opts_create(&runtime_opts, NULL, 0, &error_abort);
+ qemu_opts_absorb_qdict(opts, options, &local_err);
+ if (local_err) {
+ error_propagate(errp, local_err);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ filename = qemu_opt_get(opts, "filename");
+
+ s->glfs = qemu_gluster_init(gconf, filename, errp);
+ if (!s->glfs) {
+ ret = -errno;
+ goto out;
+ }
+
+ qemu_gluster_parse_flags(bdrv_flags, &open_flags);
+
+ s->fd = glfs_open(s->glfs, gconf->image, open_flags);
+ if (!s->fd) {
+ ret = -errno;
+ }
+
+out:
+ qemu_opts_del(opts);
+ qemu_gluster_gconf_free(gconf);
+ if (!ret) {
+ return ret;
+ }
+ if (s->fd) {
+ glfs_close(s->fd);
+ }
+ if (s->glfs) {
+ glfs_fini(s->glfs);
+ }
+ return ret;
+}
+
+typedef struct BDRVGlusterReopenState {
+ struct glfs *glfs;
+ struct glfs_fd *fd;
+} BDRVGlusterReopenState;
+
+
+static int qemu_gluster_reopen_prepare(BDRVReopenState *state,
+ BlockReopenQueue *queue, Error **errp)
+{
+ int ret = 0;
+ BDRVGlusterReopenState *reop_s;
+ GlusterConf *gconf = NULL;
+ int open_flags = 0;
+
+ assert(state != NULL);
+ assert(state->bs != NULL);
+
+ state->opaque = g_new0(BDRVGlusterReopenState, 1);
+ reop_s = state->opaque;
+
+ qemu_gluster_parse_flags(state->flags, &open_flags);
+
+ gconf = g_new0(GlusterConf, 1);
+
+ reop_s->glfs = qemu_gluster_init(gconf, state->bs->filename, errp);
+ if (reop_s->glfs == NULL) {
+ ret = -errno;
+ goto exit;
+ }
+
+ reop_s->fd = glfs_open(reop_s->glfs, gconf->image, open_flags);
+ if (reop_s->fd == NULL) {
+ /* reops->glfs will be cleaned up in _abort */
+ ret = -errno;
+ goto exit;
+ }
+
+exit:
+ /* state->opaque will be freed in either the _abort or _commit */
+ qemu_gluster_gconf_free(gconf);
+ return ret;
+}
+
+static void qemu_gluster_reopen_commit(BDRVReopenState *state)
+{
+ BDRVGlusterReopenState *reop_s = state->opaque;
+ BDRVGlusterState *s = state->bs->opaque;
+
+
+ /* close the old */
+ if (s->fd) {
+ glfs_close(s->fd);
+ }
+ if (s->glfs) {
+ glfs_fini(s->glfs);
+ }
+
+ /* use the newly opened image / connection */
+ s->fd = reop_s->fd;
+ s->glfs = reop_s->glfs;
+
+ g_free(state->opaque);
+ state->opaque = NULL;
+
+ return;
+}
+
+
+static void qemu_gluster_reopen_abort(BDRVReopenState *state)
+{
+ BDRVGlusterReopenState *reop_s = state->opaque;
+
+ if (reop_s == NULL) {
+ return;
+ }
+
+ if (reop_s->fd) {
+ glfs_close(reop_s->fd);
+ }
+
+ if (reop_s->glfs) {
+ glfs_fini(reop_s->glfs);
+ }
+
+ g_free(state->opaque);
+ state->opaque = NULL;
+
+ return;
+}
+
+#ifdef CONFIG_GLUSTERFS_ZEROFILL
+static coroutine_fn int qemu_gluster_co_write_zeroes(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors, BdrvRequestFlags flags)
+{
+ int ret;
+ GlusterAIOCB *acb = g_slice_new(GlusterAIOCB);
+ BDRVGlusterState *s = bs->opaque;
+ off_t size = nb_sectors * BDRV_SECTOR_SIZE;
+ off_t offset = sector_num * BDRV_SECTOR_SIZE;
+
+ acb->size = size;
+ acb->ret = 0;
+ acb->coroutine = qemu_coroutine_self();
+ acb->aio_context = bdrv_get_aio_context(bs);
+
+ ret = glfs_zerofill_async(s->fd, offset, size, &gluster_finish_aiocb, acb);
+ if (ret < 0) {
+ ret = -errno;
+ goto out;
+ }
+
+ qemu_coroutine_yield();
+ ret = acb->ret;
+
+out:
+ g_slice_free(GlusterAIOCB, acb);
+ return ret;
+}
+
+static inline bool gluster_supports_zerofill(void)
+{
+ return 1;
+}
+
+static inline int qemu_gluster_zerofill(struct glfs_fd *fd, int64_t offset,
+ int64_t size)
+{
+ return glfs_zerofill(fd, offset, size);
+}
+
+#else
+static inline bool gluster_supports_zerofill(void)
+{
+ return 0;
+}
+
+static inline int qemu_gluster_zerofill(struct glfs_fd *fd, int64_t offset,
+ int64_t size)
+{
+ return 0;
+}
+#endif
+
+static int qemu_gluster_create(const char *filename,
+ QemuOpts *opts, Error **errp)
+{
+ struct glfs *glfs;
+ struct glfs_fd *fd;
+ int ret = 0;
+ int prealloc = 0;
+ int64_t total_size = 0;
+ char *tmp = NULL;
+ GlusterConf *gconf = g_new0(GlusterConf, 1);
+
+ glfs = qemu_gluster_init(gconf, filename, errp);
+ if (!glfs) {
+ ret = -errno;
+ goto out;
+ }
+
+ total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
+ BDRV_SECTOR_SIZE);
+
+ tmp = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
+ if (!tmp || !strcmp(tmp, "off")) {
+ prealloc = 0;
+ } else if (!strcmp(tmp, "full") &&
+ gluster_supports_zerofill()) {
+ prealloc = 1;
+ } else {
+ error_setg(errp, "Invalid preallocation mode: '%s'"
+ " or GlusterFS doesn't support zerofill API",
+ tmp);
+ ret = -EINVAL;
+ goto out;
+ }
+
+ fd = glfs_creat(glfs, gconf->image,
+ O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRUSR | S_IWUSR);
+ if (!fd) {
+ ret = -errno;
+ } else {
+ if (!glfs_ftruncate(fd, total_size)) {
+ if (prealloc && qemu_gluster_zerofill(fd, 0, total_size)) {
+ ret = -errno;
+ }
+ } else {
+ ret = -errno;
+ }
+
+ if (glfs_close(fd) != 0) {
+ ret = -errno;
+ }
+ }
+out:
+ g_free(tmp);
+ qemu_gluster_gconf_free(gconf);
+ if (glfs) {
+ glfs_fini(glfs);
+ }
+ return ret;
+}
+
+static coroutine_fn int qemu_gluster_co_rw(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors, QEMUIOVector *qiov, int write)
+{
+ int ret;
+ GlusterAIOCB *acb = g_slice_new(GlusterAIOCB);
+ BDRVGlusterState *s = bs->opaque;
+ size_t size = nb_sectors * BDRV_SECTOR_SIZE;
+ off_t offset = sector_num * BDRV_SECTOR_SIZE;
+
+ acb->size = size;
+ acb->ret = 0;
+ acb->coroutine = qemu_coroutine_self();
+ acb->aio_context = bdrv_get_aio_context(bs);
+
+ if (write) {
+ ret = glfs_pwritev_async(s->fd, qiov->iov, qiov->niov, offset, 0,
+ &gluster_finish_aiocb, acb);
+ } else {
+ ret = glfs_preadv_async(s->fd, qiov->iov, qiov->niov, offset, 0,
+ &gluster_finish_aiocb, acb);
+ }
+
+ if (ret < 0) {
+ ret = -errno;
+ goto out;
+ }
+
+ qemu_coroutine_yield();
+ ret = acb->ret;
+
+out:
+ g_slice_free(GlusterAIOCB, acb);
+ return ret;
+}
+
+static int qemu_gluster_truncate(BlockDriverState *bs, int64_t offset)
+{
+ int ret;
+ BDRVGlusterState *s = bs->opaque;
+
+ ret = glfs_ftruncate(s->fd, offset);
+ if (ret < 0) {
+ return -errno;
+ }
+
+ return 0;
+}
+
+static coroutine_fn int qemu_gluster_co_readv(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors, QEMUIOVector *qiov)
+{
+ return qemu_gluster_co_rw(bs, sector_num, nb_sectors, qiov, 0);
+}
+
+static coroutine_fn int qemu_gluster_co_writev(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors, QEMUIOVector *qiov)
+{
+ return qemu_gluster_co_rw(bs, sector_num, nb_sectors, qiov, 1);
+}
+
+static coroutine_fn int qemu_gluster_co_flush_to_disk(BlockDriverState *bs)
+{
+ int ret;
+ GlusterAIOCB *acb = g_slice_new(GlusterAIOCB);
+ BDRVGlusterState *s = bs->opaque;
+
+ acb->size = 0;
+ acb->ret = 0;
+ acb->coroutine = qemu_coroutine_self();
+ acb->aio_context = bdrv_get_aio_context(bs);
+
+ ret = glfs_fsync_async(s->fd, &gluster_finish_aiocb, acb);
+ if (ret < 0) {
+ ret = -errno;
+ goto out;
+ }
+
+ qemu_coroutine_yield();
+ ret = acb->ret;
+
+out:
+ g_slice_free(GlusterAIOCB, acb);
+ return ret;
+}
+
+#ifdef CONFIG_GLUSTERFS_DISCARD
+static coroutine_fn int qemu_gluster_co_discard(BlockDriverState *bs,
+ int64_t sector_num, int nb_sectors)
+{
+ int ret;
+ GlusterAIOCB *acb = g_slice_new(GlusterAIOCB);
+ BDRVGlusterState *s = bs->opaque;
+ size_t size = nb_sectors * BDRV_SECTOR_SIZE;
+ off_t offset = sector_num * BDRV_SECTOR_SIZE;
+
+ acb->size = 0;
+ acb->ret = 0;
+ acb->coroutine = qemu_coroutine_self();
+ acb->aio_context = bdrv_get_aio_context(bs);
+
+ ret = glfs_discard_async(s->fd, offset, size, &gluster_finish_aiocb, acb);
+ if (ret < 0) {
+ ret = -errno;
+ goto out;
+ }
+
+ qemu_coroutine_yield();
+ ret = acb->ret;
+
+out:
+ g_slice_free(GlusterAIOCB, acb);
+ return ret;
+}
+#endif
+
+static int64_t qemu_gluster_getlength(BlockDriverState *bs)
+{
+ BDRVGlusterState *s = bs->opaque;
+ int64_t ret;
+
+ ret = glfs_lseek(s->fd, 0, SEEK_END);
+ if (ret < 0) {
+ return -errno;
+ } else {
+ return ret;
+ }
+}
+
+static int64_t qemu_gluster_allocated_file_size(BlockDriverState *bs)
+{
+ BDRVGlusterState *s = bs->opaque;
+ struct stat st;
+ int ret;
+
+ ret = glfs_fstat(s->fd, &st);
+ if (ret < 0) {
+ return -errno;
+ } else {
+ return st.st_blocks * 512;
+ }
+}
+
+static void qemu_gluster_close(BlockDriverState *bs)
+{
+ BDRVGlusterState *s = bs->opaque;
+
+ if (s->fd) {
+ glfs_close(s->fd);
+ s->fd = NULL;
+ }
+ glfs_fini(s->glfs);
+}
+
+static int qemu_gluster_has_zero_init(BlockDriverState *bs)
+{
+ /* GlusterFS volume could be backed by a block device */
+ return 0;
+}
+
+static QemuOptsList qemu_gluster_create_opts = {
+ .name = "qemu-gluster-create-opts",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_gluster_create_opts.head),
+ .desc = {
+ {
+ .name = BLOCK_OPT_SIZE,
+ .type = QEMU_OPT_SIZE,
+ .help = "Virtual disk size"
+ },
+ {
+ .name = BLOCK_OPT_PREALLOC,
+ .type = QEMU_OPT_STRING,
+ .help = "Preallocation mode (allowed values: off, full)"
+ },
+ { /* end of list */ }
+ }
+};
+
+static BlockDriver bdrv_gluster = {
+ .format_name = "gluster",
+ .protocol_name = "gluster",
+ .instance_size = sizeof(BDRVGlusterState),
+ .bdrv_needs_filename = true,
+ .bdrv_file_open = qemu_gluster_open,
+ .bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
+ .bdrv_reopen_commit = qemu_gluster_reopen_commit,
+ .bdrv_reopen_abort = qemu_gluster_reopen_abort,
+ .bdrv_close = qemu_gluster_close,
+ .bdrv_create = qemu_gluster_create,
+ .bdrv_getlength = qemu_gluster_getlength,
+ .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
+ .bdrv_co_readv = qemu_gluster_co_readv,
+ .bdrv_co_writev = qemu_gluster_co_writev,
+ .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
+ .bdrv_has_zero_init = qemu_gluster_has_zero_init,
+#ifdef CONFIG_GLUSTERFS_DISCARD
+ .bdrv_co_discard = qemu_gluster_co_discard,
+#endif
+#ifdef CONFIG_GLUSTERFS_ZEROFILL
+ .bdrv_co_write_zeroes = qemu_gluster_co_write_zeroes,
+#endif
+ .create_opts = &qemu_gluster_create_opts,
+};
+
+static BlockDriver bdrv_gluster_tcp = {
+ .format_name = "gluster",
+ .protocol_name = "gluster+tcp",
+ .instance_size = sizeof(BDRVGlusterState),
+ .bdrv_needs_filename = true,
+ .bdrv_file_open = qemu_gluster_open,
+ .bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
+ .bdrv_reopen_commit = qemu_gluster_reopen_commit,
+ .bdrv_reopen_abort = qemu_gluster_reopen_abort,
+ .bdrv_close = qemu_gluster_close,
+ .bdrv_create = qemu_gluster_create,
+ .bdrv_getlength = qemu_gluster_getlength,
+ .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
+ .bdrv_co_readv = qemu_gluster_co_readv,
+ .bdrv_co_writev = qemu_gluster_co_writev,
+ .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
+ .bdrv_has_zero_init = qemu_gluster_has_zero_init,
+#ifdef CONFIG_GLUSTERFS_DISCARD
+ .bdrv_co_discard = qemu_gluster_co_discard,
+#endif
+#ifdef CONFIG_GLUSTERFS_ZEROFILL
+ .bdrv_co_write_zeroes = qemu_gluster_co_write_zeroes,
+#endif
+ .create_opts = &qemu_gluster_create_opts,
+};
+
+static BlockDriver bdrv_gluster_unix = {
+ .format_name = "gluster",
+ .protocol_name = "gluster+unix",
+ .instance_size = sizeof(BDRVGlusterState),
+ .bdrv_needs_filename = true,
+ .bdrv_file_open = qemu_gluster_open,
+ .bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
+ .bdrv_reopen_commit = qemu_gluster_reopen_commit,
+ .bdrv_reopen_abort = qemu_gluster_reopen_abort,
+ .bdrv_close = qemu_gluster_close,
+ .bdrv_create = qemu_gluster_create,
+ .bdrv_getlength = qemu_gluster_getlength,
+ .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
+ .bdrv_co_readv = qemu_gluster_co_readv,
+ .bdrv_co_writev = qemu_gluster_co_writev,
+ .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
+ .bdrv_has_zero_init = qemu_gluster_has_zero_init,
+#ifdef CONFIG_GLUSTERFS_DISCARD
+ .bdrv_co_discard = qemu_gluster_co_discard,
+#endif
+#ifdef CONFIG_GLUSTERFS_ZEROFILL
+ .bdrv_co_write_zeroes = qemu_gluster_co_write_zeroes,
+#endif
+ .create_opts = &qemu_gluster_create_opts,
+};
+
+static BlockDriver bdrv_gluster_rdma = {
+ .format_name = "gluster",
+ .protocol_name = "gluster+rdma",
+ .instance_size = sizeof(BDRVGlusterState),
+ .bdrv_needs_filename = true,
+ .bdrv_file_open = qemu_gluster_open,
+ .bdrv_reopen_prepare = qemu_gluster_reopen_prepare,
+ .bdrv_reopen_commit = qemu_gluster_reopen_commit,
+ .bdrv_reopen_abort = qemu_gluster_reopen_abort,
+ .bdrv_close = qemu_gluster_close,
+ .bdrv_create = qemu_gluster_create,
+ .bdrv_getlength = qemu_gluster_getlength,
+ .bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
+ .bdrv_truncate = qemu_gluster_truncate,
+ .bdrv_co_readv = qemu_gluster_co_readv,
+ .bdrv_co_writev = qemu_gluster_co_writev,
+ .bdrv_co_flush_to_disk = qemu_gluster_co_flush_to_disk,
+ .bdrv_has_zero_init = qemu_gluster_has_zero_init,
+#ifdef CONFIG_GLUSTERFS_DISCARD
+ .bdrv_co_discard = qemu_gluster_co_discard,
+#endif
+#ifdef CONFIG_GLUSTERFS_ZEROFILL
+ .bdrv_co_write_zeroes = qemu_gluster_co_write_zeroes,
+#endif
+ .create_opts = &qemu_gluster_create_opts,
+};
+
+static void bdrv_gluster_init(void)
+{
+ bdrv_register(&bdrv_gluster_rdma);
+ bdrv_register(&bdrv_gluster_unix);
+ bdrv_register(&bdrv_gluster_tcp);
+ bdrv_register(&bdrv_gluster);
+}
+
+block_init(bdrv_gluster_init);
Code Review / kvmfornfv.git / blobdiff