/*
* "from" can be NULL, a snapshot, or a bookmark.
*
* If from is NULL, a full (non-incremental) stream will be estimated. This
* is calculated very efficiently.
*
* If from is a snapshot, lzc_send_space uses the deadlists attached to
* each snapshot to efficiently estimate the stream size.
*
* If from is a bookmark, the indirect blocks in the destination snapshot
* are traversed, looking for blocks with a birth time since the creation TXG of
* the snapshot this bookmark was created from. This will result in
* significantly more I/O and be less efficient than a send space estimation on
* an equivalent snapshot. This process is also used if redact_snaps is
* non-null.
*/
int
lzc_send_space_resume_redacted(const char *snapname, const char *from,
enum lzc_send_flags flags, uint64_t resumeobj, uint64_t resumeoff,
uint64_t resume_bytes, const char *redactbook, int fd, uint64_t *spacep)
{
nvlist_t *args;
nvlist_t *result;
int err;
args = fnvlist_alloc();
if (from != NULL)
fnvlist_add_string(args, "from", from);
if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
fnvlist_add_boolean(args, "largeblockok");
if (flags & LZC_SEND_FLAG_EMBED_DATA)
fnvlist_add_boolean(args, "embedok");
if (flags & LZC_SEND_FLAG_COMPRESS)
fnvlist_add_boolean(args, "compressok");
if (resumeobj != 0 || resumeoff != 0) {
fnvlist_add_uint64(args, "resume_object", resumeobj);
fnvlist_add_uint64(args, "resume_offset", resumeoff);
fnvlist_add_uint64(args, "bytes", resume_bytes);
}
if (redactbook != NULL)
fnvlist_add_string(args, "redactbook", redactbook);
if (fd != -1)
fnvlist_add_int32(args, "fd", fd);
err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result);
nvlist_free(args);
if (err == 0)
*spacep = fnvlist_lookup_uint64(result, "space");
nvlist_free(result);
return (err);
}
/*
* "from" can be NULL, a snapshot, or a bookmark.
*
* If from is NULL, a full (non-incremental) stream will be estimated. This
* is calculated very efficiently.
*
* If from is a snapshot, lzc_send_space uses the deadlists attached to
* each snapshot to efficiently estimate the stream size.
*
* If from is a bookmark, the indirect blocks in the destination snapshot
* are traversed, looking for blocks with a birth time since the creation TXG of
* the snapshot this bookmark was created from. This will result in
* significantly more I/O and be less efficient than a send space estimation on
* an equivalent snapshot.
*/
int
lzc_send_space(const char *snapname, const char *from,
enum lzc_send_flags flags, uint64_t *spacep)
{
nvlist_t *args;
nvlist_t *result;
int err;
args = fnvlist_alloc();
if (from != NULL)
fnvlist_add_string(args, "from", from);
if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
fnvlist_add_boolean(args, "largeblockok");
if (flags & LZC_SEND_FLAG_EMBED_DATA)
fnvlist_add_boolean(args, "embedok");
if (flags & LZC_SEND_FLAG_COMPRESS)
fnvlist_add_boolean(args, "compressok");
if (flags & LZC_SEND_FLAG_RAW)
fnvlist_add_boolean(args, "rawok");
err = lzc_ioctl(ZFS_IOC_SEND_SPACE, snapname, args, &result);
nvlist_free(args);
if (err == 0)
*spacep = fnvlist_lookup_uint64(result, "space");
nvlist_free(result);
return (err);
}
static void
test_send_new(const char *snapshot, int fd)
{
nvlist_t *required = fnvlist_alloc();
nvlist_t *optional = fnvlist_alloc();
fnvlist_add_int32(required, "fd", fd);
fnvlist_add_boolean(optional, "largeblockok");
fnvlist_add_boolean(optional, "embedok");
fnvlist_add_boolean(optional, "compressok");
fnvlist_add_boolean(optional, "rawok");
/*
* TODO - Resumable send is harder to set up. So we currently
* ignore testing for that variant.
*/
#if 0
fnvlist_add_string(optional, "fromsnap", from);
fnvlist_add_uint64(optional, "resume_object", resumeobj);
fnvlist_add_uint64(optional, "resume_offset", offset);
#endif
IOC_INPUT_TEST(ZFS_IOC_SEND_NEW, snapshot, required, optional, 0);
nvlist_free(optional);
nvlist_free(required);
}
int
lzc_send_resume(const char *snapname, const char *from, int fd,
enum lzc_send_flags flags, uint64_t resumeobj, uint64_t resumeoff)
{
nvlist_t *args;
int err;
args = fnvlist_alloc();
fnvlist_add_int32(args, "fd", fd);
if (from != NULL)
fnvlist_add_string(args, "fromsnap", from);
if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
fnvlist_add_boolean(args, "largeblockok");
if (flags & LZC_SEND_FLAG_EMBED_DATA)
fnvlist_add_boolean(args, "embedok");
if (flags & LZC_SEND_FLAG_COMPRESS)
fnvlist_add_boolean(args, "compressok");
if (flags & LZC_SEND_FLAG_RAW)
fnvlist_add_boolean(args, "rawok");
if (resumeobj != 0 || resumeoff != 0) {
fnvlist_add_uint64(args, "resume_object", resumeobj);
fnvlist_add_uint64(args, "resume_offset", resumeoff);
}
err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL);
nvlist_free(args);
return (err);
}
static void
test_get_bookmarks(const char *dataset)
{
nvlist_t *optional = fnvlist_alloc();
fnvlist_add_boolean(optional, "guid");
fnvlist_add_boolean(optional, "createtxg");
fnvlist_add_boolean(optional, "creation");
IOC_INPUT_TEST_WILD(ZFS_IOC_GET_BOOKMARKS, dataset, NULL, optional, 0);
nvlist_free(optional);
}
/*
* Iterate over all bookmarks
*/
int
zfs_iter_bookmarks(zfs_handle_t *zhp, zfs_iter_f func, void *data)
{
zfs_handle_t *nzhp;
nvlist_t *props = NULL;
nvlist_t *bmarks = NULL;
int err;
nvpair_t *pair;
if ((zfs_get_type(zhp) & (ZFS_TYPE_SNAPSHOT | ZFS_TYPE_BOOKMARK)) != 0)
return (0);
/* Setup the requested properties nvlist. */
props = fnvlist_alloc();
fnvlist_add_boolean(props, zfs_prop_to_name(ZFS_PROP_GUID));
fnvlist_add_boolean(props, zfs_prop_to_name(ZFS_PROP_CREATETXG));
fnvlist_add_boolean(props, zfs_prop_to_name(ZFS_PROP_CREATION));
/* Allocate an nvlist to hold the bookmarks. */
bmarks = fnvlist_alloc();
if ((err = lzc_get_bookmarks(zhp->zfs_name, props, &bmarks)) != 0)
goto out;
for (pair = nvlist_next_nvpair(bmarks, NULL);
pair != NULL; pair = nvlist_next_nvpair(bmarks, pair)) {
char name[ZFS_MAXNAMELEN];
char *bmark_name;
nvlist_t *bmark_props;
bmark_name = nvpair_name(pair);
bmark_props = fnvpair_value_nvlist(pair);
(void) snprintf(name, sizeof (name), "%s#%s", zhp->zfs_name,
bmark_name);
nzhp = make_bookmark_handle(zhp, name, bmark_props);
if (nzhp == NULL)
continue;
if ((err = func(nzhp, data)) != 0)
goto out;
}
out:
fnvlist_free(props);
fnvlist_free(bmarks);
return (err);
}
static void
dsl_dataset_user_hold_sync_one_impl(nvlist_t *tmpholds, dsl_dataset_t *ds,
const char *htag, minor_t minor, uint64_t now, dmu_tx_t *tx)
{
dsl_pool_t *dp = ds->ds_dir->dd_pool;
objset_t *mos = dp->dp_meta_objset;
uint64_t zapobj;
ASSERT(RRW_WRITE_HELD(&dp->dp_config_rwlock));
if (ds->ds_phys->ds_userrefs_obj == 0) {
/*
* This is the first user hold for this dataset. Create
* the userrefs zap object.
*/
dmu_buf_will_dirty(ds->ds_dbuf, tx);
zapobj = ds->ds_phys->ds_userrefs_obj =
zap_create(mos, DMU_OT_USERREFS, DMU_OT_NONE, 0, tx);
} else {
zapobj = ds->ds_phys->ds_userrefs_obj;
}
ds->ds_userrefs++;
VERIFY0(zap_add(mos, zapobj, htag, 8, 1, &now, tx));
if (minor != 0) {
char name[MAXNAMELEN];
nvlist_t *tags;
VERIFY0(dsl_pool_user_hold(dp, ds->ds_object,
htag, now, tx));
(void) snprintf(name, sizeof (name), "%llx",
(u_longlong_t)ds->ds_object);
if (nvlist_lookup_nvlist(tmpholds, name, &tags) != 0) {
VERIFY0(nvlist_alloc(&tags, NV_UNIQUE_NAME,
KM_PUSHPAGE));
fnvlist_add_boolean(tags, htag);
fnvlist_add_nvlist(tmpholds, name, tags);
fnvlist_free(tags);
} else {
fnvlist_add_boolean(tags, htag);
}
}
spa_history_log_internal_ds(ds, "hold", tx,
"tag=%s temp=%d refs=%llu",
htag, minor != 0, ds->ds_userrefs);
}
static void
test_send_space(const char *snapshot1, const char *snapshot2)
{
nvlist_t *optional = fnvlist_alloc();
fnvlist_add_string(optional, "from", snapshot1);
fnvlist_add_boolean(optional, "largeblockok");
fnvlist_add_boolean(optional, "embedok");
fnvlist_add_boolean(optional, "compressok");
fnvlist_add_boolean(optional, "rawok");
IOC_INPUT_TEST(ZFS_IOC_SEND_SPACE, snapshot2, NULL, optional, 0);
nvlist_free(optional);
}
static void
test_recv_new(const char *dataset, int fd)
{
dmu_replay_record_t drr = { 0 };
nvlist_t *required = fnvlist_alloc();
nvlist_t *optional = fnvlist_alloc();
nvlist_t *props = fnvlist_alloc();
char snapshot[MAXNAMELEN + 32];
ssize_t count;
int cleanup_fd = open(ZFS_DEV, O_RDWR);
(void) snprintf(snapshot, sizeof (snapshot), "%s@replicant", dataset);
count = pread(fd, &drr, sizeof (drr), 0);
if (count != sizeof (drr)) {
(void) fprintf(stderr, "could not read stream: %s\n",
strerror(errno));
}
fnvlist_add_string(required, "snapname", snapshot);
fnvlist_add_byte_array(required, "begin_record", (uchar_t *)&drr,
sizeof (drr));
fnvlist_add_int32(required, "input_fd", fd);
fnvlist_add_string(props, "org.openzfs:launch", "September 17th, 2013");
fnvlist_add_nvlist(optional, "localprops", props);
fnvlist_add_boolean(optional, "force");
fnvlist_add_int32(optional, "cleanup_fd", cleanup_fd);
/*
* TODO - Resumable receive is harder to set up. So we currently
* ignore testing for one.
*/
#if 0
fnvlist_add_nvlist(optional, "props", recvdprops);
fnvlist_add_string(optional, "origin", origin);
fnvlist_add_boolean(optional, "resumable");
fnvlist_add_uint64(optional, "action_handle", *action_handle);
#endif
IOC_INPUT_TEST(ZFS_IOC_RECV_NEW, dataset, required, optional, EBADE);
nvlist_free(props);
nvlist_free(optional);
nvlist_free(required);
(void) close(cleanup_fd);
}
/*
* Called at spa_load time to release a stale temporary user hold.
* Also called by the onexit code.
*/
void
dsl_dataset_user_release_tmp(dsl_pool_t *dp, uint64_t dsobj, const char *htag)
{
dsl_dataset_user_release_tmp_arg_t ddurta;
#ifdef _KERNEL
dsl_dataset_t *ds;
int error;
/* Make sure it is not mounted. */
dsl_pool_config_enter(dp, FTAG);
error = dsl_dataset_hold_obj(dp, dsobj, FTAG, &ds);
if (error == 0) {
char name[MAXNAMELEN];
dsl_dataset_name(ds, name);
dsl_dataset_rele(ds, FTAG);
dsl_pool_config_exit(dp, FTAG);
zfs_unmount_snap(name);
} else {
dsl_pool_config_exit(dp, FTAG);
}
#endif
ddurta.ddurta_dsobj = dsobj;
ddurta.ddurta_holds = fnvlist_alloc();
fnvlist_add_boolean(ddurta.ddurta_holds, htag);
(void) dsl_sync_task(spa_name(dp->dp_spa),
dsl_dataset_user_release_tmp_check,
dsl_dataset_user_release_tmp_sync, &ddurta, 1);
fnvlist_free(ddurta.ddurta_holds);
}
/*
* Destroys snapshots.
*
* The keys in the snaps nvlist are the snapshots to be destroyed.
* They must all be in the same pool.
*
* Snapshots that do not exist will be silently ignored.
*
* If 'defer' is not set, and a snapshot has user holds or clones, the
* destroy operation will fail and none of the snapshots will be
* destroyed.
*
* If 'defer' is set, and a snapshot has user holds or clones, it will be
* marked for deferred destruction, and will be destroyed when the last hold
* or clone is removed/destroyed.
*
* The return value will be 0 if all snapshots were destroyed (or marked for
* later destruction if 'defer' is set) or didn't exist to begin with.
*
* Otherwise the return value will be the errno of a (unspecified) snapshot
* that failed, no snapshots will be destroyed, and the errlist will have an
* entry for each snapshot that failed. The value in the errlist will be
* the (int32) error code.
*/
int
lzc_destroy_snaps(nvlist_t *snaps, boolean_t defer, nvlist_t **errlist)
{
nvpair_t *elem;
nvlist_t *args;
int error;
char pool[MAXNAMELEN];
/* determine the pool name */
elem = nvlist_next_nvpair(snaps, NULL);
if (elem == NULL)
return (0);
(void) strlcpy(pool, nvpair_name(elem), sizeof (pool));
pool[strcspn(pool, "/@")] = '\0';
args = fnvlist_alloc();
fnvlist_add_nvlist(args, "snaps", snaps);
if (defer)
fnvlist_add_boolean(args, "defer");
error = lzc_ioctl(ZFS_IOC_DESTROY_SNAPS, pool, args, errlist);
nvlist_free(args);
return (error);
}
/*
* Generate a zfs send stream for the specified snapshot and write it to
* the specified file descriptor.
*
* "snapname" is the full name of the snapshot to send (e.g. "pool/fs@snap")
*
* If "from" is NULL, a full (non-incremental) stream will be sent.
* If "from" is non-NULL, it must be the full name of a snapshot or
* bookmark to send an incremental from (e.g. "pool/fs@earlier_snap" or
* "pool/fs#earlier_bmark"). If non-NULL, the specified snapshot or
* bookmark must represent an earlier point in the history of "snapname").
* It can be an earlier snapshot in the same filesystem or zvol as "snapname",
* or it can be the origin of "snapname"'s filesystem, or an earlier
* snapshot in the origin, etc.
*
* "fd" is the file descriptor to write the send stream to.
*
* If "flags" contains LZC_SEND_FLAG_LARGE_BLOCK, the stream is permitted
* to contain DRR_WRITE records with drr_length > 128K, and DRR_OBJECT
* records with drr_blksz > 128K.
*
* If "flags" contains LZC_SEND_FLAG_EMBED_DATA, the stream is permitted
* to contain DRR_WRITE_EMBEDDED records with drr_etype==BP_EMBEDDED_TYPE_DATA,
* which the receiving system must support (as indicated by support
* for the "embedded_data" feature).
*/
int
lzc_send(const char *snapname, const char *from, int fd,
enum lzc_send_flags flags)
{
nvlist_t *args;
int err;
args = fnvlist_alloc();
fnvlist_add_int32(args, "fd", fd);
if (from != NULL)
fnvlist_add_string(args, "fromsnap", from);
if (flags & LZC_SEND_FLAG_LARGE_BLOCK)
fnvlist_add_boolean(args, "largeblockok");
if (flags & LZC_SEND_FLAG_EMBED_DATA)
fnvlist_add_boolean(args, "embedok");
err = lzc_ioctl(ZFS_IOC_SEND_NEW, snapname, args, NULL);
nvlist_free(args);
return (err);
}
static void
test_destroy_bookmarks(const char *pool, const char *bookmark)
{
nvlist_t *required = fnvlist_alloc();
fnvlist_add_boolean(required, bookmark);
IOC_INPUT_TEST_WILD(ZFS_IOC_DESTROY_BOOKMARKS, pool, required, NULL, 0);
nvlist_free(required);
}
int
dmu_objset_snapshot_one(const char *fsname, const char *snapname)
{
int err;
char *longsnap = kmem_asprintf("%s@%s", fsname, snapname);
nvlist_t *snaps = fnvlist_alloc();
fnvlist_add_boolean(snaps, longsnap);
strfree(longsnap);
err = dsl_dataset_snapshot(snaps, NULL, NULL);
fnvlist_free(snaps);
return (err);
}
/*
* Populate nv with all valid properties and their values for the given
* dataset.
*/
static void
zcp_dataset_props(dsl_dataset_t *ds, nvlist_t *nv)
{
for (int prop = ZFS_PROP_TYPE; prop < ZFS_NUM_PROPS; prop++) {
/* Do not display hidden props */
if (!zfs_prop_visible(prop))
continue;
/* Do not display props not valid for this dataset */
if (!prop_valid_for_ds(ds, prop))
continue;
fnvlist_add_boolean(nv, zfs_prop_to_name(prop));
}
}
static void
test_release(const char *pool, const char *snapshot)
{
nvlist_t *required = fnvlist_alloc();
nvlist_t *release = fnvlist_alloc();
fnvlist_add_boolean(release, "libzfs_check_hold");
fnvlist_add_nvlist(required, snapshot, release);
IOC_INPUT_TEST_WILD(ZFS_IOC_RELEASE, pool, required, NULL, 0);
nvlist_free(release);
nvlist_free(required);
}
static void
test_destroy_snaps(const char *pool, const char *snapshot)
{
nvlist_t *required = fnvlist_alloc();
nvlist_t *snaps = fnvlist_alloc();
fnvlist_add_boolean(snaps, snapshot);
fnvlist_add_nvlist(required, "snaps", snaps);
IOC_INPUT_TEST(ZFS_IOC_DESTROY_SNAPS, pool, required, NULL, 0);
nvlist_free(snaps);
nvlist_free(required);
}
/*
* Convert a value from the given index into the lua stack to an nvpair, adding
* it to an nvlist with the given key.
*
* Values are converted as follows:
*
* string -> string
* number -> int64
* boolean -> boolean
* nil -> boolean (no value)
*
* Lua tables are converted to nvlists and then inserted. The table's keys
* are converted to strings then used as keys in the nvlist to store each table
* element. Keys are converted as follows:
*
* string -> no change
* number -> "%lld"
* boolean -> "true" | "false"
* nil -> error
*
* In the case of a key collision, an error is thrown.
*
* If an error is encountered, a nonzero error code is returned, and an error
* string will be pushed onto the Lua stack.
*/
static int
zcp_lua_to_nvlist_impl(lua_State *state, int index, nvlist_t *nvl,
const char *key, int depth)
{
/*
* Verify that we have enough remaining space in the lua stack to parse
* a key-value pair and push an error.
*/
if (!lua_checkstack(state, 3)) {
(void) lua_pushstring(state, "Lua stack overflow");
return (1);
}
index = lua_absindex(state, index);
switch (lua_type(state, index)) {
case LUA_TNIL:
fnvlist_add_boolean(nvl, key);
break;
case LUA_TBOOLEAN:
fnvlist_add_boolean_value(nvl, key,
lua_toboolean(state, index));
break;
case LUA_TNUMBER:
fnvlist_add_int64(nvl, key, lua_tonumber(state, index));
break;
case LUA_TSTRING:
fnvlist_add_string(nvl, key, lua_tostring(state, index));
break;
case LUA_TTABLE: {
nvlist_t *value_nvl = zcp_table_to_nvlist(state, index, depth);
if (value_nvl == NULL)
return (EINVAL);
fnvlist_add_nvlist(nvl, key, value_nvl);
fnvlist_free(value_nvl);
break;
}
default:
(void) lua_pushfstring(state,
"Invalid value type '%s' for key '%s'",
lua_typename(state, lua_type(state, index)), key);
return (EINVAL);
}
return (0);
}
static void
test_load_key(const char *dataset)
{
nvlist_t *required = fnvlist_alloc();
nvlist_t *optional = fnvlist_alloc();
nvlist_t *hidden = fnvlist_alloc();
uint8_t keydata[WRAPPING_KEY_LEN] = {0};
fnvlist_add_uint8_array(hidden, "wkeydata", keydata, sizeof (keydata));
fnvlist_add_nvlist(required, "hidden_args", hidden);
fnvlist_add_boolean(optional, "noop");
IOC_INPUT_TEST(ZFS_IOC_LOAD_KEY, dataset, required, optional, EINVAL);
nvlist_free(hidden);
nvlist_free(optional);
nvlist_free(required);
}
static int
dsl_destroy_snapshot_check(void *arg, dmu_tx_t *tx)
{
dmu_snapshots_destroy_arg_t *dsda = arg;
dsl_pool_t *dp = dmu_tx_pool(tx);
nvpair_t *pair;
int error = 0;
if (!dmu_tx_is_syncing(tx))
return (0);
for (pair = nvlist_next_nvpair(dsda->dsda_snaps, NULL);
pair != NULL; pair = nvlist_next_nvpair(dsda->dsda_snaps, pair)) {
dsl_dataset_t *ds;
error = dsl_dataset_hold(dp, nvpair_name(pair),
FTAG, &ds);
/*
* If the snapshot does not exist, silently ignore it
* (it's "already destroyed").
*/
if (error == ENOENT)
continue;
if (error == 0) {
error = dsl_destroy_snapshot_check_impl(ds,
dsda->dsda_defer);
dsl_dataset_rele(ds, FTAG);
}
if (error == 0) {
fnvlist_add_boolean(dsda->dsda_successful_snaps,
nvpair_name(pair));
} else {
fnvlist_add_int32(dsda->dsda_errlist,
nvpair_name(pair), error);
}
}
pair = nvlist_next_nvpair(dsda->dsda_errlist, NULL);
if (pair != NULL)
return (fnvpair_value_int32(pair));
return (0);
}
static int
dsl_bookmark_destroy_check(void *arg, dmu_tx_t *tx)
{
dsl_bookmark_destroy_arg_t *dbda = arg;
dsl_pool_t *dp = dmu_tx_pool(tx);
int rv = 0;
nvpair_t *pair;
if (!spa_feature_is_enabled(dp->dp_spa, SPA_FEATURE_BOOKMARKS))
return (0);
for (pair = nvlist_next_nvpair(dbda->dbda_bmarks, NULL);
pair != NULL; pair = nvlist_next_nvpair(dbda->dbda_bmarks, pair)) {
const char *fullname = nvpair_name(pair);
dsl_dataset_t *ds;
zfs_bookmark_phys_t bm;
int error;
char *shortname;
error = dsl_bookmark_hold_ds(dp, fullname, &ds,
FTAG, &shortname);
if (error == ENOENT) {
/* ignore it; the bookmark is "already destroyed" */
continue;
}
if (error == 0) {
error = dsl_dataset_bmark_lookup(ds, shortname, &bm);
dsl_dataset_rele(ds, FTAG);
if (error == ESRCH) {
/*
* ignore it; the bookmark is
* "already destroyed"
*/
continue;
}
}
if (error == 0) {
fnvlist_add_boolean(dbda->dbda_success, fullname);
} else {
fnvlist_add_int32(dbda->dbda_errors, fullname, error);
rv = error;
}
}
return (rv);
}
static int
dsl_dataset_user_release_check(void *arg, dmu_tx_t *tx)
{
dsl_dataset_user_release_arg_t *ddura = arg;
dsl_pool_t *dp = dmu_tx_pool(tx);
nvpair_t *pair;
int rv = 0;
if (!dmu_tx_is_syncing(tx))
return (0);
for (pair = nvlist_next_nvpair(ddura->ddura_holds, NULL); pair != NULL;
pair = nvlist_next_nvpair(ddura->ddura_holds, pair)) {
const char *name = nvpair_name(pair);
int error;
dsl_dataset_t *ds;
nvlist_t *holds;
error = nvpair_value_nvlist(pair, &holds);
if (error != 0)
return (EINVAL);
error = dsl_dataset_hold(dp, name, FTAG, &ds);
if (error == 0) {
boolean_t deleteme;
error = dsl_dataset_user_release_check_one(ds,
holds, &deleteme);
if (error == 0 && deleteme) {
fnvlist_add_boolean(ddura->ddura_todelete,
name);
}
dsl_dataset_rele(ds, FTAG);
}
if (error != 0) {
if (ddura->ddura_errlist != NULL) {
fnvlist_add_int32(ddura->ddura_errlist,
name, error);
}
rv = error;
}
}
return (rv);
}
static void
test_snapshot(const char *pool, const char *snapshot)
{
nvlist_t *required = fnvlist_alloc();
nvlist_t *optional = fnvlist_alloc();
nvlist_t *snaps = fnvlist_alloc();
nvlist_t *props = fnvlist_alloc();
fnvlist_add_boolean(snaps, snapshot);
fnvlist_add_nvlist(required, "snaps", snaps);
fnvlist_add_string(props, "org.openzfs:launch", "September 17th, 2013");
fnvlist_add_nvlist(optional, "props", props);
IOC_INPUT_TEST(ZFS_IOC_SNAPSHOT, pool, required, optional, 0);
nvlist_free(props);
nvlist_free(snaps);
nvlist_free(optional);
nvlist_free(required);
}
/* ARGSUSED */
static int
zcp_synctask_snapshot(lua_State *state, boolean_t sync, nvlist_t *err_details)
{
int err;
dsl_dataset_snapshot_arg_t ddsa = { 0 };
const char *dsname = lua_tostring(state, 1);
zcp_run_info_t *ri = zcp_run_info(state);
/*
* On old pools, the ZIL must not be active when a snapshot is created,
* but we can't suspend the ZIL because we're already in syncing
* context.
*/
if (spa_version(ri->zri_pool->dp_spa) < SPA_VERSION_FAST_SNAP) {
return (ENOTSUP);
}
/*
* We only allow for a single snapshot rather than a list, so the
* error list output is unnecessary.
*/
ddsa.ddsa_errors = NULL;
ddsa.ddsa_props = NULL;
ddsa.ddsa_cr = ri->zri_cred;
ddsa.ddsa_snaps = fnvlist_alloc();
fnvlist_add_boolean(ddsa.ddsa_snaps, dsname);
zcp_cleanup_handler_t *zch = zcp_register_cleanup(state,
(zcp_cleanup_t *)&fnvlist_free, ddsa.ddsa_snaps);
err = zcp_sync_task(state, dsl_dataset_snapshot_check,
dsl_dataset_snapshot_sync, &ddsa, sync, dsname);
zcp_deregister_cleanup(state, zch);
fnvlist_free(ddsa.ddsa_snaps);
return (err);
}
/*
* Performs key management functions
*
* crypto_cmd should be a value from zfs_ioc_crypto_cmd_t. If the command
* specifies to load or change a wrapping key, the key should be specified in
* the hidden_args nvlist so that it is not logged
*/
int
lzc_load_key(const char *fsname, boolean_t noop, uint8_t *wkeydata,
uint_t wkeylen)
{
int error;
nvlist_t *ioc_args;
nvlist_t *hidden_args;
if (wkeydata == NULL)
return (EINVAL);
ioc_args = fnvlist_alloc();
hidden_args = fnvlist_alloc();
fnvlist_add_uint8_array(hidden_args, "wkeydata", wkeydata, wkeylen);
fnvlist_add_nvlist(ioc_args, ZPOOL_HIDDEN_ARGS, hidden_args);
if (noop)
fnvlist_add_boolean(ioc_args, "noop");
error = lzc_ioctl(ZFS_IOC_LOAD_KEY, fsname, ioc_args, NULL);
nvlist_free(hidden_args);
nvlist_free(ioc_args);
return (error);
}
static int
dsl_dataset_user_release_check_one(dsl_dataset_user_release_arg_t *ddura,
dsl_dataset_t *ds, nvlist_t *holds, const char *snapname)
{
uint64_t zapobj;
nvlist_t *holds_found;
objset_t *mos;
int numholds;
if (!dsl_dataset_is_snapshot(ds))
return (SET_ERROR(EINVAL));
if (nvlist_empty(holds))
return (0);
numholds = 0;
mos = ds->ds_dir->dd_pool->dp_meta_objset;
zapobj = ds->ds_phys->ds_userrefs_obj;
holds_found = fnvlist_alloc();
for (nvpair_t *pair = nvlist_next_nvpair(holds, NULL); pair != NULL;
pair = nvlist_next_nvpair(holds, pair)) {
uint64_t tmp;
int error;
const char *holdname = nvpair_name(pair);
if (zapobj != 0)
error = zap_lookup(mos, zapobj, holdname, 8, 1, &tmp);
else
error = SET_ERROR(ENOENT);
/*
* Non-existent holds are put on the errlist, but don't
* cause an overall failure.
*/
if (error == ENOENT) {
if (ddura->ddura_errlist != NULL) {
char *errtag = kmem_asprintf("%s#%s",
snapname, holdname);
fnvlist_add_int32(ddura->ddura_errlist, errtag,
ENOENT);
strfree(errtag);
}
continue;
}
if (error != 0) {
fnvlist_free(holds_found);
return (error);
}
fnvlist_add_boolean(holds_found, holdname);
numholds++;
}
if (DS_IS_DEFER_DESTROY(ds) && ds->ds_phys->ds_num_children == 1 &&
ds->ds_userrefs == numholds) {
/* we need to destroy the snapshot as well */
if (dsl_dataset_long_held(ds)) {
fnvlist_free(holds_found);
return (SET_ERROR(EBUSY));
}
fnvlist_add_boolean(ddura->ddura_todelete, snapname);
}
if (numholds != 0) {
fnvlist_add_nvlist(ddura->ddura_chkholds, snapname,
holds_found);
}
fnvlist_free(holds_found);
return (0);
}
/*
* Linux adds ZFS_IOC_RECV_NEW for resumable and raw streams and preserves the
* legacy ZFS_IOC_RECV user/kernel interface. The new interface supports all
* stream options but is currently only used for resumable streams. This way
* updated user space utilities will interoperate with older kernel modules.
*
* Non-Linux OpenZFS platforms have opted to modify the legacy interface.
*/
static int
recv_impl(const char *snapname, nvlist_t *recvdprops, nvlist_t *localprops,
const char *origin, boolean_t force, boolean_t resumable, boolean_t raw,
int input_fd, const dmu_replay_record_t *begin_record, int cleanup_fd,
uint64_t *read_bytes, uint64_t *errflags, uint64_t *action_handle,
nvlist_t **errors)
{
dmu_replay_record_t drr;
char fsname[MAXPATHLEN];
char *atp;
int error;
ASSERT3S(g_refcount, >, 0);
VERIFY3S(g_fd, !=, -1);
/* Set 'fsname' to the name of containing filesystem */
(void) strlcpy(fsname, snapname, sizeof (fsname));
atp = strchr(fsname, '@');
if (atp == NULL)
return (EINVAL);
*atp = '\0';
/* If the fs does not exist, try its parent. */
if (!lzc_exists(fsname)) {
char *slashp = strrchr(fsname, '/');
if (slashp == NULL)
return (ENOENT);
*slashp = '\0';
}
/*
* The begin_record is normally a non-byteswapped BEGIN record.
* For resumable streams it may be set to any non-byteswapped
* dmu_replay_record_t.
*/
if (begin_record == NULL) {
error = recv_read(input_fd, &drr, sizeof (drr));
if (error != 0)
return (error);
} else {
drr = *begin_record;
}
if (resumable || raw) {
nvlist_t *outnvl = NULL;
nvlist_t *innvl = fnvlist_alloc();
fnvlist_add_string(innvl, "snapname", snapname);
if (recvdprops != NULL)
fnvlist_add_nvlist(innvl, "props", recvdprops);
if (localprops != NULL)
fnvlist_add_nvlist(innvl, "localprops", localprops);
if (origin != NULL && strlen(origin))
fnvlist_add_string(innvl, "origin", origin);
fnvlist_add_byte_array(innvl, "begin_record",
(uchar_t *)&drr, sizeof (drr));
fnvlist_add_int32(innvl, "input_fd", input_fd);
if (force)
fnvlist_add_boolean(innvl, "force");
if (resumable)
fnvlist_add_boolean(innvl, "resumable");
if (cleanup_fd >= 0)
fnvlist_add_int32(innvl, "cleanup_fd", cleanup_fd);
if (action_handle != NULL)
fnvlist_add_uint64(innvl, "action_handle",
*action_handle);
error = lzc_ioctl(ZFS_IOC_RECV_NEW, fsname, innvl, &outnvl);
if (error == 0 && read_bytes != NULL)
error = nvlist_lookup_uint64(outnvl, "read_bytes",
read_bytes);
if (error == 0 && errflags != NULL)
error = nvlist_lookup_uint64(outnvl, "error_flags",
errflags);
if (error == 0 && action_handle != NULL)
error = nvlist_lookup_uint64(outnvl, "action_handle",
action_handle);
if (error == 0 && errors != NULL) {
nvlist_t *nvl;
error = nvlist_lookup_nvlist(outnvl, "errors", &nvl);
if (error == 0)
*errors = fnvlist_dup(nvl);
}
fnvlist_free(innvl);
fnvlist_free(outnvl);
} else {
zfs_cmd_t zc = {"\0"};
char *packed = NULL;
size_t size;
ASSERT3S(g_refcount, >, 0);
(void) strlcpy(zc.zc_name, fsname, sizeof (zc.zc_value));
(void) strlcpy(zc.zc_value, snapname, sizeof (zc.zc_value));
if (recvdprops != NULL) {
packed = fnvlist_pack(recvdprops, &size);
zc.zc_nvlist_src = (uint64_t)(uintptr_t)packed;
zc.zc_nvlist_src_size = size;
}
if (localprops != NULL) {
packed = fnvlist_pack(localprops, &size);
zc.zc_nvlist_conf = (uint64_t)(uintptr_t)packed;
zc.zc_nvlist_conf_size = size;
}
if (origin != NULL)
(void) strlcpy(zc.zc_string, origin,
sizeof (zc.zc_string));
ASSERT3S(drr.drr_type, ==, DRR_BEGIN);
zc.zc_begin_record = drr.drr_u.drr_begin;
zc.zc_guid = force;
zc.zc_cookie = input_fd;
zc.zc_cleanup_fd = -1;
zc.zc_action_handle = 0;
if (cleanup_fd >= 0)
zc.zc_cleanup_fd = cleanup_fd;
if (action_handle != NULL)
zc.zc_action_handle = *action_handle;
zc.zc_nvlist_dst_size = 128 * 1024;
zc.zc_nvlist_dst = (uint64_t)(uintptr_t)
malloc(zc.zc_nvlist_dst_size);
error = ioctl(g_fd, ZFS_IOC_RECV, &zc);
if (error != 0) {
error = errno;
} else {
if (read_bytes != NULL)
*read_bytes = zc.zc_cookie;
if (errflags != NULL)
*errflags = zc.zc_obj;
if (action_handle != NULL)
*action_handle = zc.zc_action_handle;
if (errors != NULL)
VERIFY0(nvlist_unpack(
(void *)(uintptr_t)zc.zc_nvlist_dst,
zc.zc_nvlist_dst_size, errors, KM_SLEEP));
}
if (packed != NULL)
fnvlist_pack_free(packed, size);
free((void *)(uintptr_t)zc.zc_nvlist_dst);
}
return (error);
}
static void
run_tests(void)
{
const char *key = "key";
/* Note: maximum nvlist key length is 32KB */
int len = 1024 * 31;
char *bigstring = malloc(len);
for (int i = 0; i < len; i++)
bigstring[i] = 'a' + i % 26;
bigstring[len - 1] = '\0';
nvl = fnvlist_alloc();
fnvlist_add_boolean(nvl, key);
test("boolean", B_TRUE, B_FALSE);
fnvlist_add_boolean_value(nvl, key, B_TRUE);
test("boolean_value", B_FALSE, B_FALSE);
fnvlist_add_byte(nvl, key, 1);
test("byte", B_FALSE, B_FALSE);
fnvlist_add_int8(nvl, key, 1);
test("int8", B_FALSE, B_FALSE);
fnvlist_add_uint8(nvl, key, 1);
test("uint8", B_FALSE, B_FALSE);
fnvlist_add_int16(nvl, key, 1);
test("int16", B_FALSE, B_FALSE);
fnvlist_add_uint16(nvl, key, 1);
test("uint16", B_FALSE, B_FALSE);
fnvlist_add_int32(nvl, key, 1);
test("int32", B_FALSE, B_FALSE);
fnvlist_add_uint32(nvl, key, 1);
test("uint32", B_FALSE, B_FALSE);
fnvlist_add_int64(nvl, key, 1);
test("int64", B_TRUE, B_TRUE);
fnvlist_add_uint64(nvl, key, 1);
test("uint64", B_FALSE, B_FALSE);
fnvlist_add_string(nvl, key, "1");
test("string", B_TRUE, B_TRUE);
{
nvlist_t *val = fnvlist_alloc();
fnvlist_add_string(val, "subkey", "subvalue");
fnvlist_add_nvlist(nvl, key, val);
fnvlist_free(val);
test("nvlist", B_TRUE, B_TRUE);
}
{
boolean_t val[2] = { B_FALSE, B_TRUE };
fnvlist_add_boolean_array(nvl, key, val, 2);
test("boolean_array", B_FALSE, B_FALSE);
}
{
uchar_t val[2] = { 0, 1 };
fnvlist_add_byte_array(nvl, key, val, 2);
test("byte_array", B_FALSE, B_FALSE);
}
{
int8_t val[2] = { 0, 1 };
fnvlist_add_int8_array(nvl, key, val, 2);
test("int8_array", B_FALSE, B_FALSE);
}
{
uint8_t val[2] = { 0, 1 };
fnvlist_add_uint8_array(nvl, key, val, 2);
test("uint8_array", B_FALSE, B_FALSE);
}
{
int16_t val[2] = { 0, 1 };
fnvlist_add_int16_array(nvl, key, val, 2);
test("int16_array", B_FALSE, B_FALSE);
}
{
uint16_t val[2] = { 0, 1 };
fnvlist_add_uint16_array(nvl, key, val, 2);
test("uint16_array", B_FALSE, B_FALSE);
}
{
int32_t val[2] = { 0, 1 };
fnvlist_add_int32_array(nvl, key, val, 2);
test("int32_array", B_FALSE, B_FALSE);
}
{
uint32_t val[2] = { 0, 1 };
fnvlist_add_uint32_array(nvl, key, val, 2);
test("uint32_array", B_FALSE, B_FALSE);
}
{
int64_t val[2] = { 0, 1 };
fnvlist_add_int64_array(nvl, key, val, 2);
test("int64_array", B_TRUE, B_FALSE);
}
{
uint64_t val[2] = { 0, 1 };
fnvlist_add_uint64_array(nvl, key, val, 2);
test("uint64_array", B_FALSE, B_FALSE);
}
{
char *const val[2] = { "0", "1" };
fnvlist_add_string_array(nvl, key, val, 2);
test("string_array", B_TRUE, B_FALSE);
}
{
nvlist_t *val[2];
val[0] = fnvlist_alloc();
fnvlist_add_string(val[0], "subkey", "subvalue");
val[1] = fnvlist_alloc();
fnvlist_add_string(val[1], "subkey2", "subvalue2");
fnvlist_add_nvlist_array(nvl, key, val, 2);
fnvlist_free(val[0]);
fnvlist_free(val[1]);
test("nvlist_array", B_FALSE, B_FALSE);
}
{
fnvlist_add_string(nvl, bigstring, "1");
test("large_key", B_TRUE, B_TRUE);
}
{
fnvlist_add_string(nvl, key, bigstring);
test("large_value", B_TRUE, B_TRUE);
}
{
for (int i = 0; i < 1024; i++) {
char buf[32];
(void) snprintf(buf, sizeof (buf), "key-%u", i);
fnvlist_add_int64(nvl, buf, i);
}
test("many_keys", B_TRUE, B_TRUE);
}
#ifndef __sparc__
{
for (int i = 0; i < 10; i++) {
nvlist_t *newval = fnvlist_alloc();
fnvlist_add_nvlist(newval, "key", nvl);
fnvlist_free(nvl);
nvl = newval;
}
test("deeply_nested_pos", B_TRUE, B_TRUE);
}
{
for (int i = 0; i < 90; i++) {
nvlist_t *newval = fnvlist_alloc();
fnvlist_add_nvlist(newval, "key", nvl);
fnvlist_free(nvl);
nvl = newval;
}
test("deeply_nested_neg", B_FALSE, B_FALSE);
}
#endif
free(bigstring);
fnvlist_free(nvl);
}
static void
zfs_ioc_input_tests(const char *pool)
{
char filepath[] = "/tmp/ioc_test_file_XXXXXX";
char dataset[ZFS_MAX_DATASET_NAME_LEN];
char snapbase[ZFS_MAX_DATASET_NAME_LEN + 32];
char snapshot[ZFS_MAX_DATASET_NAME_LEN + 32];
char bookmark[ZFS_MAX_DATASET_NAME_LEN + 32];
char backup[ZFS_MAX_DATASET_NAME_LEN];
char clone[ZFS_MAX_DATASET_NAME_LEN];
int tmpfd, err;
/*
* Setup names and create a working dataset
*/
(void) snprintf(dataset, sizeof (dataset), "%s/test-fs", pool);
(void) snprintf(snapbase, sizeof (snapbase), "%s@snapbase", dataset);
(void) snprintf(snapshot, sizeof (snapshot), "%s@snapshot", dataset);
(void) snprintf(bookmark, sizeof (bookmark), "%s#bookmark", dataset);
(void) snprintf(clone, sizeof (clone), "%s/test-fs-clone", pool);
(void) snprintf(backup, sizeof (backup), "%s/backup", pool);
err = lzc_create(dataset, DMU_OST_ZFS, NULL, NULL, 0);
if (err) {
(void) fprintf(stderr, "could not create '%s': %s\n",
dataset, strerror(errno));
exit(2);
}
tmpfd = mkstemp(filepath);
if (tmpfd < 0) {
(void) fprintf(stderr, "could not create '%s': %s\n",
filepath, strerror(errno));
exit(2);
}
/*
* run a test for each ioctl
* Note that some test build on previous test operations
*/
test_pool_sync(pool);
test_pool_reopen(pool);
test_pool_checkpoint(pool);
test_pool_discard_checkpoint(pool);
test_log_history(pool);
test_create(dataset);
test_snapshot(pool, snapbase);
test_snapshot(pool, snapshot);
test_space_snaps(snapshot);
test_send_space(snapbase, snapshot);
test_send_new(snapshot, tmpfd);
test_recv_new(backup, tmpfd);
test_bookmark(pool, snapshot, bookmark);
test_get_bookmarks(dataset);
test_destroy_bookmarks(pool, bookmark);
test_hold(pool, snapshot);
test_get_holds(snapshot);
test_release(pool, snapshot);
test_clone(snapshot, clone);
zfs_destroy(clone);
test_rollback(dataset, snapshot);
test_destroy_snaps(pool, snapshot);
test_destroy_snaps(pool, snapbase);
test_remap(dataset);
test_channel_program(pool);
test_load_key(dataset);
test_change_key(dataset);
test_unload_key(dataset);
/*
* cleanup
*/
zfs_cmd_t zc = {"\0"};
nvlist_t *snaps = fnvlist_alloc();
fnvlist_add_boolean(snaps, snapshot);
(void) lzc_destroy_snaps(snaps, B_FALSE, NULL);
nvlist_free(snaps);
(void) zfs_destroy(dataset);
(void) zfs_destroy(backup);
(void) close(tmpfd);
(void) unlink(filepath);
/*
* All the unused slots should yield ZFS_ERR_IOC_CMD_UNAVAIL
*/
for (int i = 0; i < ARRAY_SIZE(ioc_skip); i++) {
if (ioc_tested[ioc_skip[i] - ZFS_IOC_FIRST])
(void) fprintf(stderr, "cmd %d tested, not skipped!\n",
(int)(ioc_skip[i] - ZFS_IOC_FIRST));
ioc_tested[ioc_skip[i] - ZFS_IOC_FIRST] = B_TRUE;
}
(void) strlcpy(zc.zc_name, pool, sizeof (zc.zc_name));
zc.zc_name[sizeof (zc.zc_name) - 1] = '\0';
for (unsigned ioc = ZFS_IOC_FIRST; ioc < ZFS_IOC_LAST; ioc++) {
unsigned cmd = ioc - ZFS_IOC_FIRST;
if (ioc_tested[cmd])
continue;
if (ioctl(zfs_fd, ioc, &zc) != 0 &&
errno != ZFS_ERR_IOC_CMD_UNAVAIL) {
(void) fprintf(stderr, "cmd %d is missing a test case "
"(%d)\n", cmd, errno);
}
}
}
/*
* Generate the pool's configuration based on the current in-core state.
*
* We infer whether to generate a complete config or just one top-level config
* based on whether vd is the root vdev.
*/
nvlist_t *
spa_config_generate(spa_t *spa, vdev_t *vd, uint64_t txg, int getstats)
{
nvlist_t *config, *nvroot;
vdev_t *rvd = spa->spa_root_vdev;
unsigned long hostid = 0;
boolean_t locked = B_FALSE;
uint64_t split_guid;
char *pool_name;
int config_gen_flags = 0;
if (vd == NULL) {
vd = rvd;
locked = B_TRUE;
spa_config_enter(spa, SCL_CONFIG | SCL_STATE, FTAG, RW_READER);
}
ASSERT(spa_config_held(spa, SCL_CONFIG | SCL_STATE, RW_READER) ==
(SCL_CONFIG | SCL_STATE));
/*
* If txg is -1, report the current value of spa->spa_config_txg.
*/
if (txg == -1ULL)
txg = spa->spa_config_txg;
/*
* Originally, users had to handle spa namespace collisions by either
* exporting the already imported pool or by specifying a new name for
* the pool with a conflicting name. In the case of root pools from
* virtual guests, neither approach to collision resolution is
* reasonable. This is addressed by extending the new name syntax with
* an option to specify that the new name is temporary. When specified,
* ZFS_IMPORT_TEMP_NAME will be set in spa->spa_import_flags to tell us
* to use the previous name, which we do below.
*/
if (spa->spa_import_flags & ZFS_IMPORT_TEMP_NAME) {
VERIFY0(nvlist_lookup_string(spa->spa_config,
ZPOOL_CONFIG_POOL_NAME, &pool_name));
} else
pool_name = spa_name(spa);
config = fnvlist_alloc();
fnvlist_add_uint64(config, ZPOOL_CONFIG_VERSION, spa_version(spa));
fnvlist_add_string(config, ZPOOL_CONFIG_POOL_NAME, pool_name);
fnvlist_add_uint64(config, ZPOOL_CONFIG_POOL_STATE, spa_state(spa));
fnvlist_add_uint64(config, ZPOOL_CONFIG_POOL_TXG, txg);
fnvlist_add_uint64(config, ZPOOL_CONFIG_POOL_GUID, spa_guid(spa));
fnvlist_add_uint64(config, ZPOOL_CONFIG_ERRATA, spa->spa_errata);
if (spa->spa_comment != NULL)
fnvlist_add_string(config, ZPOOL_CONFIG_COMMENT,
spa->spa_comment);
#ifdef _KERNEL
hostid = zone_get_hostid(NULL);
#else /* _KERNEL */
/*
* We're emulating the system's hostid in userland, so we can't use
* zone_get_hostid().
*/
(void) ddi_strtoul(hw_serial, NULL, 10, &hostid);
#endif /* _KERNEL */
if (hostid != 0)
fnvlist_add_uint64(config, ZPOOL_CONFIG_HOSTID, hostid);
fnvlist_add_string(config, ZPOOL_CONFIG_HOSTNAME, utsname()->nodename);
if (vd != rvd) {
fnvlist_add_uint64(config, ZPOOL_CONFIG_TOP_GUID,
vd->vdev_top->vdev_guid);
fnvlist_add_uint64(config, ZPOOL_CONFIG_GUID,
vd->vdev_guid);
if (vd->vdev_isspare)
fnvlist_add_uint64(config,
ZPOOL_CONFIG_IS_SPARE, 1ULL);
if (vd->vdev_islog)
fnvlist_add_uint64(config,
ZPOOL_CONFIG_IS_LOG, 1ULL);
vd = vd->vdev_top; /* label contains top config */
} else {
/*
* Only add the (potentially large) split information
* in the mos config, and not in the vdev labels
*/
if (spa->spa_config_splitting != NULL)
fnvlist_add_nvlist(config, ZPOOL_CONFIG_SPLIT,
spa->spa_config_splitting);
fnvlist_add_boolean(config, ZPOOL_CONFIG_HAS_PER_VDEV_ZAPS);
config_gen_flags |= VDEV_CONFIG_MOS;
}
/*
* Add the top-level config. We even add this on pools which
* don't support holes in the namespace.
*/
vdev_top_config_generate(spa, config);
/*
* If we're splitting, record the original pool's guid.
*/
if (spa->spa_config_splitting != NULL &&
nvlist_lookup_uint64(spa->spa_config_splitting,
ZPOOL_CONFIG_SPLIT_GUID, &split_guid) == 0) {
fnvlist_add_uint64(config, ZPOOL_CONFIG_SPLIT_GUID, split_guid);
}
nvroot = vdev_config_generate(spa, vd, getstats, config_gen_flags);
fnvlist_add_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, nvroot);
nvlist_free(nvroot);
/*
* Store what's necessary for reading the MOS in the label.
*/
fnvlist_add_nvlist(config, ZPOOL_CONFIG_FEATURES_FOR_READ,
spa->spa_label_features);
if (getstats && spa_load_state(spa) == SPA_LOAD_NONE) {
ddt_histogram_t *ddh;
ddt_stat_t *dds;
ddt_object_t *ddo;
ddh = kmem_zalloc(sizeof (ddt_histogram_t), KM_SLEEP);
ddt_get_dedup_histogram(spa, ddh);
fnvlist_add_uint64_array(config,
ZPOOL_CONFIG_DDT_HISTOGRAM,
(uint64_t *)ddh, sizeof (*ddh) / sizeof (uint64_t));
kmem_free(ddh, sizeof (ddt_histogram_t));
ddo = kmem_zalloc(sizeof (ddt_object_t), KM_SLEEP);
ddt_get_dedup_object_stats(spa, ddo);
fnvlist_add_uint64_array(config,
ZPOOL_CONFIG_DDT_OBJ_STATS,
(uint64_t *)ddo, sizeof (*ddo) / sizeof (uint64_t));
kmem_free(ddo, sizeof (ddt_object_t));
dds = kmem_zalloc(sizeof (ddt_stat_t), KM_SLEEP);
ddt_get_dedup_stats(spa, dds);
fnvlist_add_uint64_array(config,
ZPOOL_CONFIG_DDT_STATS,
(uint64_t *)dds, sizeof (*dds) / sizeof (uint64_t));
kmem_free(dds, sizeof (ddt_stat_t));
}
if (locked)
spa_config_exit(spa, SCL_CONFIG | SCL_STATE, FTAG);
return (config);
}
