Beispiel #1
0
Datei: zvol.c Projekt: alek-p/zfs
/*
 * ZFS_IOC_CREATE callback handles dmu zvol and zap object creation.
 */
void
zvol_create_cb(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx)
{
	zfs_creat_t *zct = arg;
	nvlist_t *nvprops = zct->zct_props;
	int error;
	uint64_t volblocksize, volsize;

	VERIFY(nvlist_lookup_uint64(nvprops,
	    zfs_prop_to_name(ZFS_PROP_VOLSIZE), &volsize) == 0);
	if (nvlist_lookup_uint64(nvprops,
	    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE), &volblocksize) != 0)
		volblocksize = zfs_prop_default_numeric(ZFS_PROP_VOLBLOCKSIZE);

	/*
	 * These properties must be removed from the list so the generic
	 * property setting step won't apply to them.
	 */
	VERIFY(nvlist_remove_all(nvprops,
	    zfs_prop_to_name(ZFS_PROP_VOLSIZE)) == 0);
	(void) nvlist_remove_all(nvprops,
	    zfs_prop_to_name(ZFS_PROP_VOLBLOCKSIZE));

	error = dmu_object_claim(os, ZVOL_OBJ, DMU_OT_ZVOL, volblocksize,
	    DMU_OT_NONE, 0, tx);
	ASSERT(error == 0);

	error = zap_create_claim(os, ZVOL_ZAP_OBJ, DMU_OT_ZVOL_PROP,
	    DMU_OT_NONE, 0, tx);
	ASSERT(error == 0);

	error = zap_update(os, ZVOL_ZAP_OBJ, "size", 8, 1, &volsize, tx);
	ASSERT(error == 0);
}
Beispiel #2
0
void
zvol_create_cb(objset_t *os, void *arg, dmu_tx_t *tx)
{
	zfs_cmd_t *zc = arg;
	int error;

	error = dmu_object_claim(os, ZVOL_OBJ, DMU_OT_ZVOL, zc->zc_volblocksize,
	    DMU_OT_NONE, 0, tx);
	ASSERT(error == 0);

	error = zap_create_claim(os, ZVOL_ZAP_OBJ, DMU_OT_ZVOL_PROP,
	    DMU_OT_NONE, 0, tx);
	ASSERT(error == 0);

	error = zap_update(os, ZVOL_ZAP_OBJ, "size", 8, 1, &zc->zc_volsize, tx);
	ASSERT(error == 0);
}
Beispiel #3
0
dsl_pool_t *
dsl_pool_create(spa_t *spa, nvlist_t *zplprops, uint64_t txg)
{
	int err;
	dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
	dmu_tx_t *tx = dmu_tx_create_assigned(dp, txg);
	objset_t *os;
	dsl_dataset_t *ds;
	uint64_t obj;

	rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG);

	/* create and open the MOS (meta-objset) */
	dp->dp_meta_objset = dmu_objset_create_impl(spa,
	    NULL, &dp->dp_meta_rootbp, DMU_OST_META, tx);

	/* create the pool directory */
	err = zap_create_claim(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
	    DMU_OT_OBJECT_DIRECTORY, DMU_OT_NONE, 0, tx);
	ASSERT0(err);

	/* Initialize scan structures */
	VERIFY0(dsl_scan_init(dp, txg));

	/* create and open the root dir */
	dp->dp_root_dir_obj = dsl_dir_create_sync(dp, NULL, NULL, tx);
	VERIFY0(dsl_dir_hold_obj(dp, dp->dp_root_dir_obj,
	    NULL, dp, &dp->dp_root_dir));

	/* create and open the meta-objset dir */
	(void) dsl_dir_create_sync(dp, dp->dp_root_dir, MOS_DIR_NAME, tx);
	VERIFY0(dsl_pool_open_special_dir(dp,
	    MOS_DIR_NAME, &dp->dp_mos_dir));

	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
		/* create and open the free dir */
		(void) dsl_dir_create_sync(dp, dp->dp_root_dir,
		    FREE_DIR_NAME, tx);
		VERIFY0(dsl_pool_open_special_dir(dp,
		    FREE_DIR_NAME, &dp->dp_free_dir));

		/* create and open the free_bplist */
		obj = bpobj_alloc(dp->dp_meta_objset, SPA_MAXBLOCKSIZE, tx);
		VERIFY(zap_add(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
		    DMU_POOL_FREE_BPOBJ, sizeof (uint64_t), 1, &obj, tx) == 0);
		VERIFY0(bpobj_open(&dp->dp_free_bpobj,
		    dp->dp_meta_objset, obj));
	}

	if (spa_version(spa) >= SPA_VERSION_DSL_SCRUB)
		dsl_pool_create_origin(dp, tx);

	/* create the root dataset */
	obj = dsl_dataset_create_sync_dd(dp->dp_root_dir, NULL, 0, tx);

	/* create the root objset */
	VERIFY0(dsl_dataset_hold_obj(dp, obj, FTAG, &ds));
	os = dmu_objset_create_impl(dp->dp_spa, ds,
	    dsl_dataset_get_blkptr(ds), DMU_OST_ZFS, tx);
#ifdef _KERNEL
	zfs_create_fs(os, kcred, zplprops, tx);
#endif
	dsl_dataset_rele(ds, FTAG);

	dmu_tx_commit(tx);

	rrw_exit(&dp->dp_config_rwlock, FTAG);

	return (dp);
}
Beispiel #4
0
dsl_pool_t *
dsl_pool_create(spa_t *spa, nvlist_t *zplprops, dsl_crypto_params_t *dcp,
    uint64_t txg)
{
	int err;
	dsl_pool_t *dp = dsl_pool_open_impl(spa, txg);
	dmu_tx_t *tx = dmu_tx_create_assigned(dp, txg);
	dsl_dataset_t *ds;
	uint64_t obj;

	rrw_enter(&dp->dp_config_rwlock, RW_WRITER, FTAG);

	/* create and open the MOS (meta-objset) */
	dp->dp_meta_objset = dmu_objset_create_impl(spa,
	    NULL, &dp->dp_meta_rootbp, DMU_OST_META, tx);
	spa->spa_meta_objset = dp->dp_meta_objset;

	/* create the pool directory */
	err = zap_create_claim(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
	    DMU_OT_OBJECT_DIRECTORY, DMU_OT_NONE, 0, tx);
	ASSERT0(err);

	/* Initialize scan structures */
	VERIFY0(dsl_scan_init(dp, txg));

	/* create and open the root dir */
	dp->dp_root_dir_obj = dsl_dir_create_sync(dp, NULL, NULL, tx);
	VERIFY0(dsl_dir_hold_obj(dp, dp->dp_root_dir_obj,
	    NULL, dp, &dp->dp_root_dir));

	/* create and open the meta-objset dir */
	(void) dsl_dir_create_sync(dp, dp->dp_root_dir, MOS_DIR_NAME, tx);
	VERIFY0(dsl_pool_open_special_dir(dp,
	    MOS_DIR_NAME, &dp->dp_mos_dir));

	if (spa_version(spa) >= SPA_VERSION_DEADLISTS) {
		/* create and open the free dir */
		(void) dsl_dir_create_sync(dp, dp->dp_root_dir,
		    FREE_DIR_NAME, tx);
		VERIFY0(dsl_pool_open_special_dir(dp,
		    FREE_DIR_NAME, &dp->dp_free_dir));

		/* create and open the free_bplist */
		obj = bpobj_alloc(dp->dp_meta_objset, SPA_OLD_MAXBLOCKSIZE, tx);
		VERIFY(zap_add(dp->dp_meta_objset, DMU_POOL_DIRECTORY_OBJECT,
		    DMU_POOL_FREE_BPOBJ, sizeof (uint64_t), 1, &obj, tx) == 0);
		VERIFY0(bpobj_open(&dp->dp_free_bpobj,
		    dp->dp_meta_objset, obj));
	}

	if (spa_version(spa) >= SPA_VERSION_DSL_SCRUB)
		dsl_pool_create_origin(dp, tx);

	/*
	 * Some features may be needed when creating the root dataset, so we
	 * create the feature objects here.
	 */
	if (spa_version(spa) >= SPA_VERSION_FEATURES)
		spa_feature_create_zap_objects(spa, tx);

	if (dcp != NULL && dcp->cp_crypt != ZIO_CRYPT_OFF &&
	    dcp->cp_crypt != ZIO_CRYPT_INHERIT)
		spa_feature_enable(spa, SPA_FEATURE_ENCRYPTION, tx);

	/* create the root dataset */
	obj = dsl_dataset_create_sync_dd(dp->dp_root_dir, NULL, dcp, 0, tx);

	/* create the root objset */
	VERIFY0(dsl_dataset_hold_obj_flags(dp, obj,
	    DS_HOLD_FLAG_DECRYPT, FTAG, &ds));
#ifdef _KERNEL
	{
		objset_t *os;
		rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
		os = dmu_objset_create_impl(dp->dp_spa, ds,
		    dsl_dataset_get_blkptr(ds), DMU_OST_ZFS, tx);
		rrw_exit(&ds->ds_bp_rwlock, FTAG);
		zfs_create_fs(os, kcred, zplprops, tx);
	}
#endif
	dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG);

	dmu_tx_commit(tx);

	rrw_exit(&dp->dp_config_rwlock, FTAG);

	return (dp);
}
Beispiel #5
0
void
zfs_create_fs(objset_t *os, cred_t *cr, nvlist_t *zplprops, dmu_tx_t *tx)
{
	struct super_block *sb;
	zfs_sb_t	*zsb;
	uint64_t	moid, obj, sa_obj, version;
	uint64_t	sense = ZFS_CASE_SENSITIVE;
	uint64_t	norm = 0;
	nvpair_t	*elem;
	int		error;
	int		i;
	znode_t		*rootzp = NULL;
	vattr_t		vattr;
	znode_t		*zp;
	zfs_acl_ids_t	acl_ids;

	/*
	 * First attempt to create master node.
	 */
	/*
	 * In an empty objset, there are no blocks to read and thus
	 * there can be no i/o errors (which we assert below).
	 */
	moid = MASTER_NODE_OBJ;
	error = zap_create_claim(os, moid, DMU_OT_MASTER_NODE,
	    DMU_OT_NONE, 0, tx);
	ASSERT(error == 0);

	/*
	 * Set starting attributes.
	 */
	version = zfs_zpl_version_map(spa_version(dmu_objset_spa(os)));
	elem = NULL;
	while ((elem = nvlist_next_nvpair(zplprops, elem)) != NULL) {
		/* For the moment we expect all zpl props to be uint64_ts */
		uint64_t val;
		char *name;

		ASSERT(nvpair_type(elem) == DATA_TYPE_UINT64);
		VERIFY(nvpair_value_uint64(elem, &val) == 0);
		name = nvpair_name(elem);
		if (strcmp(name, zfs_prop_to_name(ZFS_PROP_VERSION)) == 0) {
			if (val < version)
				version = val;
		} else {
			error = zap_update(os, moid, name, 8, 1, &val, tx);
		}
		ASSERT(error == 0);
		if (strcmp(name, zfs_prop_to_name(ZFS_PROP_NORMALIZE)) == 0)
			norm = val;
		else if (strcmp(name, zfs_prop_to_name(ZFS_PROP_CASE)) == 0)
			sense = val;
	}
	ASSERT(version != 0);
	error = zap_update(os, moid, ZPL_VERSION_STR, 8, 1, &version, tx);

	/*
	 * Create zap object used for SA attribute registration
	 */

	if (version >= ZPL_VERSION_SA) {
		sa_obj = zap_create(os, DMU_OT_SA_MASTER_NODE,
		    DMU_OT_NONE, 0, tx);
		error = zap_add(os, moid, ZFS_SA_ATTRS, 8, 1, &sa_obj, tx);
		ASSERT(error == 0);
	} else {
		sa_obj = 0;
	}
	/*
	 * Create a delete queue.
	 */
	obj = zap_create(os, DMU_OT_UNLINKED_SET, DMU_OT_NONE, 0, tx);

	error = zap_add(os, moid, ZFS_UNLINKED_SET, 8, 1, &obj, tx);
	ASSERT(error == 0);

	/*
	 * Create root znode.  Create minimal znode/inode/zsb/sb
	 * to allow zfs_mknode to work.
	 */
	vattr.va_mask = ATTR_MODE|ATTR_UID|ATTR_GID;
	vattr.va_mode = S_IFDIR|0755;
	vattr.va_uid = crgetuid(cr);
	vattr.va_gid = crgetgid(cr);

	rootzp = kmem_cache_alloc(znode_cache, KM_PUSHPAGE);
	rootzp->z_moved = 0;
	rootzp->z_unlinked = 0;
	rootzp->z_atime_dirty = 0;
	rootzp->z_is_sa = USE_SA(version, os);

	zsb = kmem_zalloc(sizeof (zfs_sb_t), KM_PUSHPAGE | KM_NODEBUG);
	zsb->z_os = os;
	zsb->z_parent = zsb;
	zsb->z_version = version;
	zsb->z_use_fuids = USE_FUIDS(version, os);
	zsb->z_use_sa = USE_SA(version, os);
	zsb->z_norm = norm;

	sb = kmem_zalloc(sizeof (struct super_block), KM_PUSHPAGE);
	sb->s_fs_info = zsb;

	ZTOI(rootzp)->i_sb = sb;

	error = sa_setup(os, sa_obj, zfs_attr_table, ZPL_END,
	    &zsb->z_attr_table);

	ASSERT(error == 0);

	/*
	 * Fold case on file systems that are always or sometimes case
	 * insensitive.
	 */
	if (sense == ZFS_CASE_INSENSITIVE || sense == ZFS_CASE_MIXED)
		zsb->z_norm |= U8_TEXTPREP_TOUPPER;

	mutex_init(&zsb->z_znodes_lock, NULL, MUTEX_DEFAULT, NULL);
	list_create(&zsb->z_all_znodes, sizeof (znode_t),
	    offsetof(znode_t, z_link_node));

	for (i = 0; i != ZFS_OBJ_MTX_SZ; i++)
		mutex_init(&zsb->z_hold_mtx[i], NULL, MUTEX_DEFAULT, NULL);

	VERIFY(0 == zfs_acl_ids_create(rootzp, IS_ROOT_NODE, &vattr,
	    cr, NULL, &acl_ids));
	zfs_mknode(rootzp, &vattr, tx, cr, IS_ROOT_NODE, &zp, &acl_ids);
	ASSERT3P(zp, ==, rootzp);
	error = zap_add(os, moid, ZFS_ROOT_OBJ, 8, 1, &rootzp->z_id, tx);
	ASSERT(error == 0);
	zfs_acl_ids_free(&acl_ids);

	atomic_set(&ZTOI(rootzp)->i_count, 0);
	sa_handle_destroy(rootzp->z_sa_hdl);
	kmem_cache_free(znode_cache, rootzp);

	/*
	 * Create shares directory
	 */
	error = zfs_create_share_dir(zsb, tx);
	ASSERT(error == 0);

	for (i = 0; i != ZFS_OBJ_MTX_SZ; i++)
		mutex_destroy(&zsb->z_hold_mtx[i]);

	kmem_free(sb, sizeof (struct super_block));
	kmem_free(zsb, sizeof (zfs_sb_t));
}
Beispiel #6
0
void
dmu_objset_do_userquota_callbacks(objset_impl_t *os, dmu_tx_t *tx)
{
	dnode_t *dn;
	list_t *list = &os->os_synced_dnodes;
	ASSERTV(static const char zerobuf[DN_MAX_BONUSLEN] = {0});

	ASSERT(list_head(list) == NULL || dmu_objset_userused_enabled(os));

	while ((dn = list_head(list))) {
		dmu_object_type_t bonustype;

		ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object));
		ASSERT(dn->dn_oldphys);
		ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE ||
		    dn->dn_phys->dn_flags &
		    DNODE_FLAG_USERUSED_ACCOUNTED);

		/* Allocate the user/groupused objects if necessary. */
		if (os->os_userused_dnode->dn_type == DMU_OT_NONE) {
			VERIFY(0 == zap_create_claim(&os->os,
			    DMU_USERUSED_OBJECT,
			    DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
			VERIFY(0 == zap_create_claim(&os->os,
			    DMU_GROUPUSED_OBJECT,
			    DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
		}

		/*
		 * If the object was not previously
		 * accounted, pretend that it was free.
		 */
		if (!(dn->dn_oldphys->dn_flags &
		    DNODE_FLAG_USERUSED_ACCOUNTED)) {
			bzero(dn->dn_oldphys, sizeof (dnode_phys_t));
		}

		/*
		 * If the object was freed, use the previous bonustype.
		 */
		bonustype = dn->dn_phys->dn_bonustype ?
		    dn->dn_phys->dn_bonustype : dn->dn_oldphys->dn_bonustype;
		ASSERT(dn->dn_phys->dn_type != 0 ||
		    (bcmp(DN_BONUS(dn->dn_phys), zerobuf,
		    DN_MAX_BONUSLEN) == 0 &&
		    DN_USED_BYTES(dn->dn_phys) == 0));
		ASSERT(dn->dn_oldphys->dn_type != 0 ||
		    (bcmp(DN_BONUS(dn->dn_oldphys), zerobuf,
		    DN_MAX_BONUSLEN) == 0 &&
		    DN_USED_BYTES(dn->dn_oldphys) == 0));
		used_cbs[os->os_phys->os_type](&os->os, bonustype,
		    DN_BONUS(dn->dn_oldphys), DN_BONUS(dn->dn_phys),
		    DN_USED_BYTES(dn->dn_oldphys),
		    DN_USED_BYTES(dn->dn_phys), tx);

		/*
		 * The mutex is needed here for interlock with dnode_allocate.
		 */
		mutex_enter(&dn->dn_mtx);
		zio_buf_free(dn->dn_oldphys, sizeof (dnode_phys_t));
		dn->dn_oldphys = NULL;
		mutex_exit(&dn->dn_mtx);

		list_remove(list, dn);
		dnode_rele(dn, list);
	}
}