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gluster: Support .bdrv_co_create
This adds the .bdrv_co_create driver callback to gluster, which enables image creation over QMP. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Kevin Wolf
parent
3766ef579c
commit
ab8bda76a0
135
block/gluster.c
135
block/gluster.c
@ -655,9 +655,11 @@ out:
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return -errno;
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}
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static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf,
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const char *filename,
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QDict *options, Error **errp)
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/* Converts options given in @filename and the @options QDict into the QAPI
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* object @gconf. */
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static int qemu_gluster_parse(BlockdevOptionsGluster *gconf,
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const char *filename,
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QDict *options, Error **errp)
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{
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int ret;
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if (filename) {
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@ -668,8 +670,7 @@ static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf,
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"[host[:port]]volume/path[?socket=...]"
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"[,file.debug=N]"
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"[,file.logfile=/path/filename.log]\n");
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errno = -ret;
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return NULL;
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return ret;
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}
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} else {
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ret = qemu_gluster_parse_json(gconf, options, errp);
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@ -685,10 +686,23 @@ static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf,
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"file.server.1.transport=unix,"
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"file.server.1.socket=/var/run/glusterd.socket ..."
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"\n");
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errno = -ret;
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return NULL;
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return ret;
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}
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}
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return 0;
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}
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static struct glfs *qemu_gluster_init(BlockdevOptionsGluster *gconf,
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const char *filename,
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QDict *options, Error **errp)
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{
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int ret;
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ret = qemu_gluster_parse(gconf, filename, options, errp);
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if (ret < 0) {
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errno = -ret;
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return NULL;
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}
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return qemu_gluster_glfs_init(gconf, errp);
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@ -1021,20 +1035,72 @@ static int qemu_gluster_do_truncate(struct glfs_fd *fd, int64_t offset,
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return 0;
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}
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static int qemu_gluster_co_create(BlockdevCreateOptions *options,
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Error **errp)
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{
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BlockdevCreateOptionsGluster *opts = &options->u.gluster;
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struct glfs *glfs;
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struct glfs_fd *fd = NULL;
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int ret = 0;
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assert(options->driver == BLOCKDEV_DRIVER_GLUSTER);
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glfs = qemu_gluster_glfs_init(opts->location, errp);
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if (!glfs) {
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ret = -errno;
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goto out;
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}
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fd = glfs_creat(glfs, opts->location->path,
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O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRUSR | S_IWUSR);
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if (!fd) {
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ret = -errno;
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goto out;
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}
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ret = qemu_gluster_do_truncate(fd, opts->size, opts->preallocation, errp);
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out:
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if (fd) {
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if (glfs_close(fd) != 0 && ret == 0) {
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ret = -errno;
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}
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}
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glfs_clear_preopened(glfs);
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return ret;
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}
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static int coroutine_fn qemu_gluster_co_create_opts(const char *filename,
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QemuOpts *opts,
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Error **errp)
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{
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BlockdevCreateOptions *options;
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BlockdevCreateOptionsGluster *gopts;
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BlockdevOptionsGluster *gconf;
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struct glfs *glfs;
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struct glfs_fd *fd = NULL;
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int ret = 0;
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PreallocMode prealloc;
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int64_t total_size = 0;
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char *tmp = NULL;
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Error *local_err = NULL;
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int ret;
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options = g_new0(BlockdevCreateOptions, 1);
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options->driver = BLOCKDEV_DRIVER_GLUSTER;
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gopts = &options->u.gluster;
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gconf = g_new0(BlockdevOptionsGluster, 1);
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gopts->location = gconf;
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gopts->size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
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BDRV_SECTOR_SIZE);
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tmp = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
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gopts->preallocation = qapi_enum_parse(&PreallocMode_lookup, tmp,
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PREALLOC_MODE_OFF, &local_err);
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g_free(tmp);
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if (local_err) {
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error_propagate(errp, local_err);
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ret = -EINVAL;
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goto fail;
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}
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gconf->debug = qemu_opt_get_number_del(opts, GLUSTER_OPT_DEBUG,
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GLUSTER_DEBUG_DEFAULT);
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if (gconf->debug < 0) {
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@ -1050,42 +1116,19 @@ static int coroutine_fn qemu_gluster_co_create_opts(const char *filename,
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}
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gconf->has_logfile = true;
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glfs = qemu_gluster_init(gconf, filename, NULL, errp);
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if (!glfs) {
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ret = -errno;
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goto out;
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ret = qemu_gluster_parse(gconf, filename, NULL, errp);
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if (ret < 0) {
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goto fail;
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}
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total_size = ROUND_UP(qemu_opt_get_size_del(opts, BLOCK_OPT_SIZE, 0),
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BDRV_SECTOR_SIZE);
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tmp = qemu_opt_get_del(opts, BLOCK_OPT_PREALLOC);
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prealloc = qapi_enum_parse(&PreallocMode_lookup, tmp, PREALLOC_MODE_OFF,
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&local_err);
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g_free(tmp);
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if (local_err) {
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error_propagate(errp, local_err);
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ret = -EINVAL;
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goto out;
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ret = qemu_gluster_co_create(options, errp);
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if (ret < 0) {
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goto fail;
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}
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fd = glfs_creat(glfs, gconf->path,
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O_WRONLY | O_CREAT | O_TRUNC | O_BINARY, S_IRUSR | S_IWUSR);
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if (!fd) {
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ret = -errno;
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goto out;
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}
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ret = qemu_gluster_do_truncate(fd, total_size, prealloc, errp);
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out:
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if (fd) {
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if (glfs_close(fd) != 0 && ret == 0) {
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ret = -errno;
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}
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}
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qapi_free_BlockdevOptionsGluster(gconf);
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glfs_clear_preopened(glfs);
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ret = 0;
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fail:
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qapi_free_BlockdevCreateOptions(options);
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return ret;
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}
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@ -1436,6 +1479,7 @@ static BlockDriver bdrv_gluster = {
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.bdrv_reopen_commit = qemu_gluster_reopen_commit,
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.bdrv_reopen_abort = qemu_gluster_reopen_abort,
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.bdrv_close = qemu_gluster_close,
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.bdrv_co_create = qemu_gluster_co_create,
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.bdrv_co_create_opts = qemu_gluster_co_create_opts,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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@ -1464,6 +1508,7 @@ static BlockDriver bdrv_gluster_tcp = {
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.bdrv_reopen_commit = qemu_gluster_reopen_commit,
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.bdrv_reopen_abort = qemu_gluster_reopen_abort,
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.bdrv_close = qemu_gluster_close,
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.bdrv_co_create = qemu_gluster_co_create,
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.bdrv_co_create_opts = qemu_gluster_co_create_opts,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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@ -1492,6 +1537,7 @@ static BlockDriver bdrv_gluster_unix = {
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.bdrv_reopen_commit = qemu_gluster_reopen_commit,
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.bdrv_reopen_abort = qemu_gluster_reopen_abort,
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.bdrv_close = qemu_gluster_close,
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.bdrv_co_create = qemu_gluster_co_create,
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.bdrv_co_create_opts = qemu_gluster_co_create_opts,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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@ -1526,6 +1572,7 @@ static BlockDriver bdrv_gluster_rdma = {
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.bdrv_reopen_commit = qemu_gluster_reopen_commit,
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.bdrv_reopen_abort = qemu_gluster_reopen_abort,
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.bdrv_close = qemu_gluster_close,
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.bdrv_co_create = qemu_gluster_co_create,
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.bdrv_co_create_opts = qemu_gluster_co_create_opts,
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.bdrv_getlength = qemu_gluster_getlength,
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.bdrv_get_allocated_file_size = qemu_gluster_allocated_file_size,
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@ -3376,6 +3376,22 @@
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'*preallocation': 'PreallocMode',
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'*nocow': 'bool' } }
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##
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# @BlockdevCreateOptionsGluster:
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#
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# Driver specific image creation options for gluster.
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#
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# @location Where to store the new image file
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# @size Size of the virtual disk in bytes
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# @preallocation Preallocation mode for the new image (default: off)
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#
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# Since: 2.12
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##
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{ 'struct': 'BlockdevCreateOptionsGluster',
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'data': { 'location': 'BlockdevOptionsGluster',
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'size': 'size',
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'*preallocation': 'PreallocMode' } }
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##
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# @BlockdevQcow2Version:
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#
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@ -3450,7 +3466,7 @@
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'file': 'BlockdevCreateOptionsFile',
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'ftp': 'BlockdevCreateNotSupported',
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'ftps': 'BlockdevCreateNotSupported',
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'gluster': 'BlockdevCreateNotSupported',
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'gluster': 'BlockdevCreateOptionsGluster',
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'host_cdrom': 'BlockdevCreateNotSupported',
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'host_device': 'BlockdevCreateNotSupported',
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'http': 'BlockdevCreateNotSupported',
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