diff options
author | pjd <pjd@FreeBSD.org> | 2011-02-27 19:41:40 +0000 |
---|---|---|
committer | pjd <pjd@FreeBSD.org> | 2011-02-27 19:41:40 +0000 |
commit | 1b03c5bf41222b723415638f03e00ed12cac076a (patch) | |
tree | ef515cadc08bf427e4d3f1360199ec9827b1596b /sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c | |
parent | c67d387baf03726323703774b1b320235fb1f24b (diff) | |
download | FreeBSD-src-1b03c5bf41222b723415638f03e00ed12cac076a.zip FreeBSD-src-1b03c5bf41222b723415638f03e00ed12cac076a.tar.gz |
Finally... Import the latest open-source ZFS version - (SPA) 28.
Few new things available from now on:
- Data deduplication.
- Triple parity RAIDZ (RAIDZ3).
- zfs diff.
- zpool split.
- Snapshot holds.
- zpool import -F. Allows to rewind corrupted pool to earlier
transaction group.
- Possibility to import pool in read-only mode.
MFC after: 1 month
Diffstat (limited to 'sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c')
-rw-r--r-- | sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c | 866 |
1 files changed, 677 insertions, 189 deletions
diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c index d064932..aa66b32 100644 --- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c +++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_prop.c @@ -19,10 +19,10 @@ * CDDL HEADER END */ /* - * Copyright 2009 Sun Microsystems, Inc. All rights reserved. - * Use is subject to license terms. + * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. */ +#include <sys/zfs_context.h> #include <sys/dmu.h> #include <sys/dmu_objset.h> #include <sys/dmu_tx.h> @@ -31,14 +31,16 @@ #include <sys/dsl_prop.h> #include <sys/dsl_synctask.h> #include <sys/spa.h> -#include <sys/zio_checksum.h> /* for the default checksum value */ #include <sys/zap.h> #include <sys/fs/zfs.h> #include "zfs_prop.h" +#define ZPROP_INHERIT_SUFFIX "$inherit" +#define ZPROP_RECVD_SUFFIX "$recvd" + static int -dodefault(const char *propname, int intsz, int numint, void *buf) +dodefault(const char *propname, int intsz, int numints, void *buf) { zfs_prop_t prop; @@ -55,9 +57,9 @@ dodefault(const char *propname, int intsz, int numint, void *buf) if (intsz != 1) return (EOVERFLOW); (void) strncpy(buf, zfs_prop_default_string(prop), - numint); + numints); } else { - if (intsz != 8 || numint < 1) + if (intsz != 8 || numints < 1) return (EOVERFLOW); *(uint64_t *)buf = zfs_prop_default_numeric(prop); @@ -68,11 +70,16 @@ dodefault(const char *propname, int intsz, int numint, void *buf) int dsl_prop_get_dd(dsl_dir_t *dd, const char *propname, - int intsz, int numint, void *buf, char *setpoint) + int intsz, int numints, void *buf, char *setpoint, boolean_t snapshot) { int err = ENOENT; + dsl_dir_t *target = dd; objset_t *mos = dd->dd_pool->dp_meta_objset; zfs_prop_t prop; + boolean_t inheritable; + boolean_t inheriting = B_FALSE; + char *inheritstr; + char *recvdstr; ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock)); @@ -80,51 +87,135 @@ dsl_prop_get_dd(dsl_dir_t *dd, const char *propname, setpoint[0] = '\0'; prop = zfs_name_to_prop(propname); + inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop)); + inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX); + recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX); /* - * Note: dd may be NULL, therefore we shouldn't dereference it - * ouside this loop. + * Note: dd may become NULL, therefore we shouldn't dereference it + * after this loop. */ for (; dd != NULL; dd = dd->dd_parent) { ASSERT(RW_LOCK_HELD(&dd->dd_pool->dp_config_rwlock)); - err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, - propname, intsz, numint, buf); + + if (dd != target || snapshot) { + if (!inheritable) + break; + inheriting = B_TRUE; + } + + /* Check for a local value. */ + err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname, + intsz, numints, buf); if (err != ENOENT) { - if (setpoint) + if (setpoint != NULL && err == 0) dsl_dir_name(dd, setpoint); break; } /* - * Break out of this loop for non-inheritable properties. + * Skip the check for a received value if there is an explicit + * inheritance entry. */ - if (prop != ZPROP_INVAL && !zfs_prop_inheritable(prop)) + err = zap_contains(mos, dd->dd_phys->dd_props_zapobj, + inheritstr); + if (err != 0 && err != ENOENT) break; + + if (err == ENOENT) { + /* Check for a received value. */ + err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, + recvdstr, intsz, numints, buf); + if (err != ENOENT) { + if (setpoint != NULL && err == 0) { + if (inheriting) { + dsl_dir_name(dd, setpoint); + } else { + (void) strcpy(setpoint, + ZPROP_SOURCE_VAL_RECVD); + } + } + break; + } + } + + /* + * If we found an explicit inheritance entry, err is zero even + * though we haven't yet found the value, so reinitializing err + * at the end of the loop (instead of at the beginning) ensures + * that err has a valid post-loop value. + */ + err = ENOENT; } + if (err == ENOENT) - err = dodefault(propname, intsz, numint, buf); + err = dodefault(propname, intsz, numints, buf); + + strfree(inheritstr); + strfree(recvdstr); return (err); } int dsl_prop_get_ds(dsl_dataset_t *ds, const char *propname, - int intsz, int numint, void *buf, char *setpoint) + int intsz, int numints, void *buf, char *setpoint) { + zfs_prop_t prop = zfs_name_to_prop(propname); + boolean_t inheritable; + boolean_t snapshot; + uint64_t zapobj; + ASSERT(RW_LOCK_HELD(&ds->ds_dir->dd_pool->dp_config_rwlock)); + inheritable = (prop == ZPROP_INVAL || zfs_prop_inheritable(prop)); + snapshot = (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)); + zapobj = (ds->ds_phys == NULL ? 0 : ds->ds_phys->ds_props_obj); + + if (zapobj != 0) { + objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; + int err; - if (ds->ds_phys->ds_props_obj) { - int err = zap_lookup(ds->ds_dir->dd_pool->dp_meta_objset, - ds->ds_phys->ds_props_obj, propname, intsz, numint, buf); + ASSERT(snapshot); + + /* Check for a local value. */ + err = zap_lookup(mos, zapobj, propname, intsz, numints, buf); if (err != ENOENT) { - if (setpoint) + if (setpoint != NULL && err == 0) dsl_dataset_name(ds, setpoint); return (err); } + + /* + * Skip the check for a received value if there is an explicit + * inheritance entry. + */ + if (inheritable) { + char *inheritstr = kmem_asprintf("%s%s", propname, + ZPROP_INHERIT_SUFFIX); + err = zap_contains(mos, zapobj, inheritstr); + strfree(inheritstr); + if (err != 0 && err != ENOENT) + return (err); + } + + if (err == ENOENT) { + /* Check for a received value. */ + char *recvdstr = kmem_asprintf("%s%s", propname, + ZPROP_RECVD_SUFFIX); + err = zap_lookup(mos, zapobj, recvdstr, + intsz, numints, buf); + strfree(recvdstr); + if (err != ENOENT) { + if (setpoint != NULL && err == 0) + (void) strcpy(setpoint, + ZPROP_SOURCE_VAL_RECVD); + return (err); + } + } } return (dsl_prop_get_dd(ds->ds_dir, propname, - intsz, numint, buf, setpoint)); + intsz, numints, buf, setpoint, snapshot)); } /* @@ -168,11 +259,8 @@ dsl_prop_register(dsl_dataset_t *ds, const char *propname, cbr->cbr_func(cbr->cbr_arg, value); - VERIFY(0 == dsl_dir_open_obj(dp, dd->dd_object, - NULL, cbr, &dd)); if (need_rwlock) rw_exit(&dp->dp_config_rwlock); - /* Leave dir open until this callback is unregistered */ return (0); } @@ -210,6 +298,137 @@ dsl_prop_get_integer(const char *ddname, const char *propname, return (dsl_prop_get(ddname, propname, 8, 1, valuep, setpoint)); } +void +dsl_prop_setarg_init_uint64(dsl_prop_setarg_t *psa, const char *propname, + zprop_source_t source, uint64_t *value) +{ + psa->psa_name = propname; + psa->psa_source = source; + psa->psa_intsz = 8; + psa->psa_numints = 1; + psa->psa_value = value; + + psa->psa_effective_value = -1ULL; +} + +/* + * Predict the effective value of the given special property if it were set with + * the given value and source. This is not a general purpose function. It exists + * only to handle the special requirements of the quota and reservation + * properties. The fact that these properties are non-inheritable greatly + * simplifies the prediction logic. + * + * Returns 0 on success, a positive error code on failure, or -1 if called with + * a property not handled by this function. + */ +int +dsl_prop_predict_sync(dsl_dir_t *dd, dsl_prop_setarg_t *psa) +{ + const char *propname = psa->psa_name; + zfs_prop_t prop = zfs_name_to_prop(propname); + zprop_source_t source = psa->psa_source; + objset_t *mos; + uint64_t zapobj; + uint64_t version; + char *recvdstr; + int err = 0; + + switch (prop) { + case ZFS_PROP_QUOTA: + case ZFS_PROP_RESERVATION: + case ZFS_PROP_REFQUOTA: + case ZFS_PROP_REFRESERVATION: + break; + default: + return (-1); + } + + mos = dd->dd_pool->dp_meta_objset; + zapobj = dd->dd_phys->dd_props_zapobj; + recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX); + + version = spa_version(dd->dd_pool->dp_spa); + if (version < SPA_VERSION_RECVD_PROPS) { + if (source & ZPROP_SRC_NONE) + source = ZPROP_SRC_NONE; + else if (source & ZPROP_SRC_RECEIVED) + source = ZPROP_SRC_LOCAL; + } + + switch (source) { + case ZPROP_SRC_NONE: + /* Revert to the received value, if any. */ + err = zap_lookup(mos, zapobj, recvdstr, 8, 1, + &psa->psa_effective_value); + if (err == ENOENT) + psa->psa_effective_value = 0; + break; + case ZPROP_SRC_LOCAL: + psa->psa_effective_value = *(uint64_t *)psa->psa_value; + break; + case ZPROP_SRC_RECEIVED: + /* + * If there's no local setting, then the new received value will + * be the effective value. + */ + err = zap_lookup(mos, zapobj, propname, 8, 1, + &psa->psa_effective_value); + if (err == ENOENT) + psa->psa_effective_value = *(uint64_t *)psa->psa_value; + break; + case (ZPROP_SRC_NONE | ZPROP_SRC_RECEIVED): + /* + * We're clearing the received value, so the local setting (if + * it exists) remains the effective value. + */ + err = zap_lookup(mos, zapobj, propname, 8, 1, + &psa->psa_effective_value); + if (err == ENOENT) + psa->psa_effective_value = 0; + break; + default: + cmn_err(CE_PANIC, "unexpected property source: %d", source); + } + + strfree(recvdstr); + + if (err == ENOENT) + return (0); + + return (err); +} + +#ifdef ZFS_DEBUG +void +dsl_prop_check_prediction(dsl_dir_t *dd, dsl_prop_setarg_t *psa) +{ + zfs_prop_t prop = zfs_name_to_prop(psa->psa_name); + uint64_t intval; + char setpoint[MAXNAMELEN]; + uint64_t version = spa_version(dd->dd_pool->dp_spa); + int err; + + if (version < SPA_VERSION_RECVD_PROPS) { + switch (prop) { + case ZFS_PROP_QUOTA: + case ZFS_PROP_RESERVATION: + return; + } + } + + err = dsl_prop_get_dd(dd, psa->psa_name, 8, 1, &intval, + setpoint, B_FALSE); + if (err == 0 && intval != psa->psa_effective_value) { + cmn_err(CE_PANIC, "%s property, source: %x, " + "predicted effective value: %llu, " + "actual effective value: %llu (setpoint: %s)", + psa->psa_name, psa->psa_source, + (unsigned long long)psa->psa_effective_value, + (unsigned long long)intval, setpoint); + } +} +#endif + /* * Unregister this callback. Return 0 on success, ENOENT if ddname is * invalid, ENOMSG if no matching callback registered. @@ -241,8 +460,6 @@ dsl_prop_unregister(dsl_dataset_t *ds, const char *propname, kmem_free((void*)cbr->cbr_propname, strlen(cbr->cbr_propname)+1); kmem_free(cbr, sizeof (dsl_prop_cb_record_t)); - /* Clean up from dsl_prop_register */ - dsl_dir_close(dd, cbr); return (0); } @@ -277,7 +494,6 @@ dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, zap_cursor_t zc; zap_attribute_t *za; int err; - uint64_t dummyval; ASSERT(RW_WRITE_HELD(&dp->dp_config_rwlock)); err = dsl_dir_open_obj(dp, ddobj, NULL, FTAG, &dd); @@ -289,8 +505,7 @@ dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, * If the prop is set here, then this change is not * being inherited here or below; stop the recursion. */ - err = zap_lookup(mos, dd->dd_phys->dd_props_zapobj, propname, - 8, 1, &dummyval); + err = zap_contains(mos, dd->dd_phys->dd_props_zapobj, propname); if (err == 0) { dsl_dir_close(dd, FTAG); return; @@ -310,8 +525,7 @@ dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, * If the property is set on this ds, then it is not * inherited here; don't call the callback. */ - if (propobj && 0 == zap_lookup(mos, propobj, propname, - 8, 1, &dummyval)) + if (propobj && 0 == zap_contains(mos, propobj, propname)) continue; cbr->cbr_func(cbr->cbr_arg, value); @@ -331,30 +545,28 @@ dsl_prop_changed_notify(dsl_pool_t *dp, uint64_t ddobj, dsl_dir_close(dd, FTAG); } -struct prop_set_arg { - const char *name; - int intsz; - int numints; - const void *buf; -}; - - -static void -dsl_prop_set_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) +void +dsl_prop_set_sync(void *arg1, void *arg2, dmu_tx_t *tx) { dsl_dataset_t *ds = arg1; - struct prop_set_arg *psa = arg2; + dsl_prop_setarg_t *psa = arg2; objset_t *mos = ds->ds_dir->dd_pool->dp_meta_objset; - uint64_t zapobj, intval; + uint64_t zapobj, intval, dummy; int isint; char valbuf[32]; - char *valstr; + char *valstr = NULL; + char *inheritstr; + char *recvdstr; + char *tbuf = NULL; + int err; + uint64_t version = spa_version(ds->ds_dir->dd_pool->dp_spa); + const char *propname = psa->psa_name; + zprop_source_t source = psa->psa_source; - isint = (dodefault(psa->name, 8, 1, &intval) == 0); + isint = (dodefault(propname, 8, 1, &intval) == 0); - if (dsl_dataset_is_snapshot(ds)) { - ASSERT(spa_version(ds->ds_dir->dd_pool->dp_spa) >= - SPA_VERSION_SNAP_PROPS); + if (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)) { + ASSERT(version >= SPA_VERSION_SNAP_PROPS); if (ds->ds_phys->ds_props_obj == 0) { dmu_buf_will_dirty(ds->ds_dbuf, tx); ds->ds_phys->ds_props_obj = @@ -366,22 +578,97 @@ dsl_prop_set_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) zapobj = ds->ds_dir->dd_phys->dd_props_zapobj; } - if (psa->numints == 0) { - int err = zap_remove(mos, zapobj, psa->name, tx); + if (version < SPA_VERSION_RECVD_PROPS) { + zfs_prop_t prop = zfs_name_to_prop(propname); + if (prop == ZFS_PROP_QUOTA || prop == ZFS_PROP_RESERVATION) + return; + + if (source & ZPROP_SRC_NONE) + source = ZPROP_SRC_NONE; + else if (source & ZPROP_SRC_RECEIVED) + source = ZPROP_SRC_LOCAL; + } + + inheritstr = kmem_asprintf("%s%s", propname, ZPROP_INHERIT_SUFFIX); + recvdstr = kmem_asprintf("%s%s", propname, ZPROP_RECVD_SUFFIX); + + switch (source) { + case ZPROP_SRC_NONE: + /* + * revert to received value, if any (inherit -S) + * - remove propname + * - remove propname$inherit + */ + err = zap_remove(mos, zapobj, propname, tx); + ASSERT(err == 0 || err == ENOENT); + err = zap_remove(mos, zapobj, inheritstr, tx); + ASSERT(err == 0 || err == ENOENT); + break; + case ZPROP_SRC_LOCAL: + /* + * remove propname$inherit + * set propname -> value + */ + err = zap_remove(mos, zapobj, inheritstr, tx); ASSERT(err == 0 || err == ENOENT); - if (isint) { - VERIFY(0 == dsl_prop_get_ds(ds, - psa->name, 8, 1, &intval, NULL)); + VERIFY(0 == zap_update(mos, zapobj, propname, + psa->psa_intsz, psa->psa_numints, psa->psa_value, tx)); + break; + case ZPROP_SRC_INHERITED: + /* + * explicitly inherit + * - remove propname + * - set propname$inherit + */ + err = zap_remove(mos, zapobj, propname, tx); + ASSERT(err == 0 || err == ENOENT); + if (version >= SPA_VERSION_RECVD_PROPS && + dsl_prop_get_ds(ds, ZPROP_HAS_RECVD, 8, 1, &dummy, + NULL) == 0) { + dummy = 0; + err = zap_update(mos, zapobj, inheritstr, + 8, 1, &dummy, tx); + ASSERT(err == 0); } - } else { - VERIFY(0 == zap_update(mos, zapobj, psa->name, - psa->intsz, psa->numints, psa->buf, tx)); - if (isint) - intval = *(uint64_t *)psa->buf; + break; + case ZPROP_SRC_RECEIVED: + /* + * set propname$recvd -> value + */ + err = zap_update(mos, zapobj, recvdstr, + psa->psa_intsz, psa->psa_numints, psa->psa_value, tx); + ASSERT(err == 0); + break; + case (ZPROP_SRC_NONE | ZPROP_SRC_LOCAL | ZPROP_SRC_RECEIVED): + /* + * clear local and received settings + * - remove propname + * - remove propname$inherit + * - remove propname$recvd + */ + err = zap_remove(mos, zapobj, propname, tx); + ASSERT(err == 0 || err == ENOENT); + err = zap_remove(mos, zapobj, inheritstr, tx); + ASSERT(err == 0 || err == ENOENT); + /* FALLTHRU */ + case (ZPROP_SRC_NONE | ZPROP_SRC_RECEIVED): + /* + * remove propname$recvd + */ + err = zap_remove(mos, zapobj, recvdstr, tx); + ASSERT(err == 0 || err == ENOENT); + break; + default: + cmn_err(CE_PANIC, "unexpected property source: %d", source); } + strfree(inheritstr); + strfree(recvdstr); + if (isint) { - if (dsl_dataset_is_snapshot(ds)) { + VERIFY(0 == dsl_prop_get_ds(ds, propname, 8, 1, &intval, NULL)); + + if (ds->ds_phys != NULL && dsl_dataset_is_snapshot(ds)) { dsl_prop_cb_record_t *cbr; /* * It's a snapshot; nothing can inherit this @@ -392,58 +679,85 @@ dsl_prop_set_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) for (cbr = list_head(&ds->ds_dir->dd_prop_cbs); cbr; cbr = list_next(&ds->ds_dir->dd_prop_cbs, cbr)) { if (cbr->cbr_ds == ds && - strcmp(cbr->cbr_propname, psa->name) == 0) + strcmp(cbr->cbr_propname, propname) == 0) cbr->cbr_func(cbr->cbr_arg, intval); } mutex_exit(&ds->ds_dir->dd_lock); } else { dsl_prop_changed_notify(ds->ds_dir->dd_pool, - ds->ds_dir->dd_object, psa->name, intval, TRUE); + ds->ds_dir->dd_object, propname, intval, TRUE); } - } - if (isint) { + (void) snprintf(valbuf, sizeof (valbuf), "%lld", (longlong_t)intval); valstr = valbuf; } else { - valstr = (char *)psa->buf; + if (source == ZPROP_SRC_LOCAL) { + valstr = (char *)psa->psa_value; + } else { + tbuf = kmem_alloc(ZAP_MAXVALUELEN, KM_SLEEP); + if (dsl_prop_get_ds(ds, propname, 1, + ZAP_MAXVALUELEN, tbuf, NULL) == 0) + valstr = tbuf; + } } - spa_history_internal_log((psa->numints == 0) ? LOG_DS_INHERIT : - LOG_DS_PROPSET, ds->ds_dir->dd_pool->dp_spa, tx, cr, - "%s=%s dataset = %llu", psa->name, valstr, ds->ds_object); + + spa_history_log_internal((source == ZPROP_SRC_NONE || + source == ZPROP_SRC_INHERITED) ? LOG_DS_INHERIT : + LOG_DS_PROPSET, ds->ds_dir->dd_pool->dp_spa, tx, + "%s=%s dataset = %llu", propname, + (valstr == NULL ? "" : valstr), ds->ds_object); + + if (tbuf != NULL) + kmem_free(tbuf, ZAP_MAXVALUELEN); } void -dsl_props_set_sync(void *arg1, void *arg2, cred_t *cr, dmu_tx_t *tx) +dsl_props_set_sync(void *arg1, void *arg2, dmu_tx_t *tx) { dsl_dataset_t *ds = arg1; - nvlist_t *nvl = arg2; + dsl_props_arg_t *pa = arg2; + nvlist_t *props = pa->pa_props; + dsl_prop_setarg_t psa; nvpair_t *elem = NULL; - while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { - struct prop_set_arg psa; + psa.psa_source = pa->pa_source; - psa.name = nvpair_name(elem); + while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { + nvpair_t *pair = elem; - if (nvpair_type(elem) == DATA_TYPE_STRING) { - VERIFY(nvpair_value_string(elem, - (char **)&psa.buf) == 0); - psa.intsz = 1; - psa.numints = strlen(psa.buf) + 1; + psa.psa_name = nvpair_name(pair); + + if (nvpair_type(pair) == DATA_TYPE_NVLIST) { + /* + * dsl_prop_get_all_impl() returns properties in this + * format. + */ + nvlist_t *attrs; + VERIFY(nvpair_value_nvlist(pair, &attrs) == 0); + VERIFY(nvlist_lookup_nvpair(attrs, ZPROP_VALUE, + &pair) == 0); + } + + if (nvpair_type(pair) == DATA_TYPE_STRING) { + VERIFY(nvpair_value_string(pair, + (char **)&psa.psa_value) == 0); + psa.psa_intsz = 1; + psa.psa_numints = strlen(psa.psa_value) + 1; } else { uint64_t intval; - VERIFY(nvpair_value_uint64(elem, &intval) == 0); - psa.intsz = sizeof (intval); - psa.numints = 1; - psa.buf = &intval; + VERIFY(nvpair_value_uint64(pair, &intval) == 0); + psa.psa_intsz = sizeof (intval); + psa.psa_numints = 1; + psa.psa_value = &intval; } - dsl_prop_set_sync(ds, &psa, cr, tx); + dsl_prop_set_sync(ds, &psa, tx); } } void -dsl_prop_set_uint64_sync(dsl_dir_t *dd, const char *name, uint64_t val, - cred_t *cr, dmu_tx_t *tx) +dsl_dir_prop_set_uint64_sync(dsl_dir_t *dd, const char *name, uint64_t val, + dmu_tx_t *tx) { objset_t *mos = dd->dd_pool->dp_meta_objset; uint64_t zapobj = dd->dd_phys->dd_props_zapobj; @@ -454,18 +768,19 @@ dsl_prop_set_uint64_sync(dsl_dir_t *dd, const char *name, uint64_t val, dsl_prop_changed_notify(dd->dd_pool, dd->dd_object, name, val, TRUE); - spa_history_internal_log(LOG_DS_PROPSET, dd->dd_pool->dp_spa, tx, cr, + spa_history_log_internal(LOG_DS_PROPSET, dd->dd_pool->dp_spa, tx, "%s=%llu dataset = %llu", name, (u_longlong_t)val, dd->dd_phys->dd_head_dataset_obj); } int -dsl_prop_set(const char *dsname, const char *propname, +dsl_prop_set(const char *dsname, const char *propname, zprop_source_t source, int intsz, int numints, const void *buf) { dsl_dataset_t *ds; + uint64_t version; int err; - struct prop_set_arg psa; + dsl_prop_setarg_t psa; /* * We must do these checks before we get to the syncfunc, since @@ -473,23 +788,30 @@ dsl_prop_set(const char *dsname, const char *propname, */ if (strlen(propname) >= ZAP_MAXNAMELEN) return (ENAMETOOLONG); - if (intsz * numints >= ZAP_MAXVALUELEN) - return (E2BIG); err = dsl_dataset_hold(dsname, FTAG, &ds); if (err) return (err); + version = spa_version(ds->ds_dir->dd_pool->dp_spa); + if (intsz * numints >= (version < SPA_VERSION_STMF_PROP ? + ZAP_OLDMAXVALUELEN : ZAP_MAXVALUELEN)) { + dsl_dataset_rele(ds, FTAG); + return (E2BIG); + } if (dsl_dataset_is_snapshot(ds) && - spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_SNAP_PROPS) { + version < SPA_VERSION_SNAP_PROPS) { dsl_dataset_rele(ds, FTAG); return (ENOTSUP); } - psa.name = propname; - psa.intsz = intsz; - psa.numints = numints; - psa.buf = buf; + psa.psa_name = propname; + psa.psa_source = source; + psa.psa_intsz = intsz; + psa.psa_numints = numints; + psa.psa_value = buf; + psa.psa_effective_value = -1ULL; + err = dsl_sync_task_do(ds->ds_dir->dd_pool, NULL, dsl_prop_set_sync, ds, &psa, 2); @@ -498,158 +820,318 @@ dsl_prop_set(const char *dsname, const char *propname, } int -dsl_props_set(const char *dsname, nvlist_t *nvl) +dsl_props_set(const char *dsname, zprop_source_t source, nvlist_t *props) { dsl_dataset_t *ds; + uint64_t version; nvpair_t *elem = NULL; + dsl_props_arg_t pa; int err; + if (err = dsl_dataset_hold(dsname, FTAG, &ds)) + return (err); /* * Do these checks before the syncfunc, since it can't fail. */ - while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { - if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) + version = spa_version(ds->ds_dir->dd_pool->dp_spa); + while ((elem = nvlist_next_nvpair(props, elem)) != NULL) { + if (strlen(nvpair_name(elem)) >= ZAP_MAXNAMELEN) { + dsl_dataset_rele(ds, FTAG); return (ENAMETOOLONG); + } if (nvpair_type(elem) == DATA_TYPE_STRING) { char *valstr; VERIFY(nvpair_value_string(elem, &valstr) == 0); - if (strlen(valstr) >= ZAP_MAXVALUELEN) + if (strlen(valstr) >= (version < + SPA_VERSION_STMF_PROP ? + ZAP_OLDMAXVALUELEN : ZAP_MAXVALUELEN)) { + dsl_dataset_rele(ds, FTAG); return (E2BIG); + } } } - if (err = dsl_dataset_hold(dsname, FTAG, &ds)) - return (err); - if (dsl_dataset_is_snapshot(ds) && - spa_version(ds->ds_dir->dd_pool->dp_spa) < SPA_VERSION_SNAP_PROPS) { + version < SPA_VERSION_SNAP_PROPS) { dsl_dataset_rele(ds, FTAG); return (ENOTSUP); } + pa.pa_props = props; + pa.pa_source = source; + err = dsl_sync_task_do(ds->ds_dir->dd_pool, - NULL, dsl_props_set_sync, ds, nvl, 2); + NULL, dsl_props_set_sync, ds, &pa, 2); dsl_dataset_rele(ds, FTAG); return (err); } +typedef enum dsl_prop_getflags { + DSL_PROP_GET_INHERITING = 0x1, /* searching parent of target ds */ + DSL_PROP_GET_SNAPSHOT = 0x2, /* snapshot dataset */ + DSL_PROP_GET_LOCAL = 0x4, /* local properties */ + DSL_PROP_GET_RECEIVED = 0x8 /* received properties */ +} dsl_prop_getflags_t; + +static int +dsl_prop_get_all_impl(objset_t *mos, uint64_t propobj, + const char *setpoint, dsl_prop_getflags_t flags, nvlist_t *nv) +{ + zap_cursor_t zc; + zap_attribute_t za; + int err = 0; + + for (zap_cursor_init(&zc, mos, propobj); + (err = zap_cursor_retrieve(&zc, &za)) == 0; + zap_cursor_advance(&zc)) { + nvlist_t *propval; + zfs_prop_t prop; + char buf[ZAP_MAXNAMELEN]; + char *valstr; + const char *suffix; + const char *propname; + const char *source; + + suffix = strchr(za.za_name, '$'); + + if (suffix == NULL) { + /* + * Skip local properties if we only want received + * properties. + */ + if (flags & DSL_PROP_GET_RECEIVED) + continue; + + propname = za.za_name; + source = setpoint; + } else if (strcmp(suffix, ZPROP_INHERIT_SUFFIX) == 0) { + /* Skip explicitly inherited entries. */ + continue; + } else if (strcmp(suffix, ZPROP_RECVD_SUFFIX) == 0) { + if (flags & DSL_PROP_GET_LOCAL) + continue; + + (void) strncpy(buf, za.za_name, (suffix - za.za_name)); + buf[suffix - za.za_name] = '\0'; + propname = buf; + + if (!(flags & DSL_PROP_GET_RECEIVED)) { + /* Skip if locally overridden. */ + err = zap_contains(mos, propobj, propname); + if (err == 0) + continue; + if (err != ENOENT) + break; + + /* Skip if explicitly inherited. */ + valstr = kmem_asprintf("%s%s", propname, + ZPROP_INHERIT_SUFFIX); + err = zap_contains(mos, propobj, valstr); + strfree(valstr); + if (err == 0) + continue; + if (err != ENOENT) + break; + } + + source = ((flags & DSL_PROP_GET_INHERITING) ? + setpoint : ZPROP_SOURCE_VAL_RECVD); + } else { + /* + * For backward compatibility, skip suffixes we don't + * recognize. + */ + continue; + } + + prop = zfs_name_to_prop(propname); + + /* Skip non-inheritable properties. */ + if ((flags & DSL_PROP_GET_INHERITING) && prop != ZPROP_INVAL && + !zfs_prop_inheritable(prop)) + continue; + + /* Skip properties not valid for this type. */ + if ((flags & DSL_PROP_GET_SNAPSHOT) && prop != ZPROP_INVAL && + !zfs_prop_valid_for_type(prop, ZFS_TYPE_SNAPSHOT)) + continue; + + /* Skip properties already defined. */ + if (nvlist_exists(nv, propname)) + continue; + + VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); + if (za.za_integer_length == 1) { + /* + * String property + */ + char *tmp = kmem_alloc(za.za_num_integers, + KM_SLEEP); + err = zap_lookup(mos, propobj, + za.za_name, 1, za.za_num_integers, tmp); + if (err != 0) { + kmem_free(tmp, za.za_num_integers); + break; + } + VERIFY(nvlist_add_string(propval, ZPROP_VALUE, + tmp) == 0); + kmem_free(tmp, za.za_num_integers); + } else { + /* + * Integer property + */ + ASSERT(za.za_integer_length == 8); + (void) nvlist_add_uint64(propval, ZPROP_VALUE, + za.za_first_integer); + } + + VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, source) == 0); + VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0); + nvlist_free(propval); + } + zap_cursor_fini(&zc); + if (err == ENOENT) + err = 0; + return (err); +} + /* * Iterate over all properties for this dataset and return them in an nvlist. */ -int -dsl_prop_get_all(objset_t *os, nvlist_t **nvp, boolean_t local) +static int +dsl_prop_get_all_ds(dsl_dataset_t *ds, nvlist_t **nvp, + dsl_prop_getflags_t flags) { - dsl_dataset_t *ds = os->os->os_dsl_dataset; dsl_dir_t *dd = ds->ds_dir; - boolean_t snapshot = dsl_dataset_is_snapshot(ds); - int err = 0; dsl_pool_t *dp = dd->dd_pool; objset_t *mos = dp->dp_meta_objset; - uint64_t propobj = ds->ds_phys->ds_props_obj; + int err = 0; + char setpoint[MAXNAMELEN]; VERIFY(nvlist_alloc(nvp, NV_UNIQUE_NAME, KM_SLEEP) == 0); - if (local && snapshot && !propobj) - return (0); + if (dsl_dataset_is_snapshot(ds)) + flags |= DSL_PROP_GET_SNAPSHOT; rw_enter(&dp->dp_config_rwlock, RW_READER); - while (dd != NULL) { - char setpoint[MAXNAMELEN]; - zap_cursor_t zc; - zap_attribute_t za; - dsl_dir_t *dd_next; - - if (propobj) { - dsl_dataset_name(ds, setpoint); - dd_next = dd; - } else { - dsl_dir_name(dd, setpoint); - propobj = dd->dd_phys->dd_props_zapobj; - dd_next = dd->dd_parent; + + if (ds->ds_phys->ds_props_obj != 0) { + ASSERT(flags & DSL_PROP_GET_SNAPSHOT); + dsl_dataset_name(ds, setpoint); + err = dsl_prop_get_all_impl(mos, ds->ds_phys->ds_props_obj, + setpoint, flags, *nvp); + if (err) + goto out; + } + + for (; dd != NULL; dd = dd->dd_parent) { + if (dd != ds->ds_dir || (flags & DSL_PROP_GET_SNAPSHOT)) { + if (flags & (DSL_PROP_GET_LOCAL | + DSL_PROP_GET_RECEIVED)) + break; + flags |= DSL_PROP_GET_INHERITING; } + dsl_dir_name(dd, setpoint); + err = dsl_prop_get_all_impl(mos, dd->dd_phys->dd_props_zapobj, + setpoint, flags, *nvp); + if (err) + break; + } +out: + rw_exit(&dp->dp_config_rwlock); + return (err); +} - for (zap_cursor_init(&zc, mos, propobj); - (err = zap_cursor_retrieve(&zc, &za)) == 0; - zap_cursor_advance(&zc)) { - nvlist_t *propval; - zfs_prop_t prop = zfs_name_to_prop(za.za_name); +boolean_t +dsl_prop_get_hasrecvd(objset_t *os) +{ + dsl_dataset_t *ds = os->os_dsl_dataset; + int rc; + uint64_t dummy; - /* Skip non-inheritable properties. */ - if (prop != ZPROP_INVAL && - !zfs_prop_inheritable(prop) && - (dd != ds->ds_dir || (snapshot && dd != dd_next))) - continue; + rw_enter(&ds->ds_dir->dd_pool->dp_config_rwlock, RW_READER); + rc = dsl_prop_get_ds(ds, ZPROP_HAS_RECVD, 8, 1, &dummy, NULL); + rw_exit(&ds->ds_dir->dd_pool->dp_config_rwlock); + ASSERT(rc != 0 || spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS); + return (rc == 0); +} - /* Skip properties not valid for this type. */ - if (snapshot && prop != ZPROP_INVAL && - !zfs_prop_valid_for_type(prop, ZFS_TYPE_SNAPSHOT)) - continue; +static void +dsl_prop_set_hasrecvd_impl(objset_t *os, zprop_source_t source) +{ + dsl_dataset_t *ds = os->os_dsl_dataset; + uint64_t dummy = 0; + dsl_prop_setarg_t psa; - /* Skip properties already defined */ - if (nvlist_lookup_nvlist(*nvp, za.za_name, - &propval) == 0) - continue; + if (spa_version(os->os_spa) < SPA_VERSION_RECVD_PROPS) + return; - VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, - KM_SLEEP) == 0); - if (za.za_integer_length == 1) { - /* - * String property - */ - char *tmp = kmem_alloc(za.za_num_integers, - KM_SLEEP); - err = zap_lookup(mos, propobj, - za.za_name, 1, za.za_num_integers, tmp); - if (err != 0) { - kmem_free(tmp, za.za_num_integers); - break; - } - VERIFY(nvlist_add_string(propval, ZPROP_VALUE, - tmp) == 0); - kmem_free(tmp, za.za_num_integers); - } else { - /* - * Integer property - */ - ASSERT(za.za_integer_length == 8); - (void) nvlist_add_uint64(propval, ZPROP_VALUE, - za.za_first_integer); - } + dsl_prop_setarg_init_uint64(&psa, ZPROP_HAS_RECVD, source, &dummy); - VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, - setpoint) == 0); - VERIFY(nvlist_add_nvlist(*nvp, za.za_name, - propval) == 0); - nvlist_free(propval); - } - zap_cursor_fini(&zc); + (void) dsl_sync_task_do(ds->ds_dir->dd_pool, NULL, + dsl_prop_set_sync, ds, &psa, 2); +} - if (err != ENOENT) - break; - err = 0; - /* - * If we are just after the props that have been set - * locally, then we are done after the first iteration. - */ - if (local) - break; - dd = dd_next; - propobj = 0; +/* + * Call after successfully receiving properties to ensure that only the first + * receive on or after SPA_VERSION_RECVD_PROPS blows away local properties. + */ +void +dsl_prop_set_hasrecvd(objset_t *os) +{ + if (dsl_prop_get_hasrecvd(os)) { + ASSERT(spa_version(os->os_spa) >= SPA_VERSION_RECVD_PROPS); + return; } - rw_exit(&dp->dp_config_rwlock); + dsl_prop_set_hasrecvd_impl(os, ZPROP_SRC_LOCAL); +} - return (err); +void +dsl_prop_unset_hasrecvd(objset_t *os) +{ + dsl_prop_set_hasrecvd_impl(os, ZPROP_SRC_NONE); +} + +int +dsl_prop_get_all(objset_t *os, nvlist_t **nvp) +{ + return (dsl_prop_get_all_ds(os->os_dsl_dataset, nvp, 0)); +} + +int +dsl_prop_get_received(objset_t *os, nvlist_t **nvp) +{ + /* + * Received properties are not distinguishable from local properties + * until the dataset has received properties on or after + * SPA_VERSION_RECVD_PROPS. + */ + dsl_prop_getflags_t flags = (dsl_prop_get_hasrecvd(os) ? + DSL_PROP_GET_RECEIVED : DSL_PROP_GET_LOCAL); + return (dsl_prop_get_all_ds(os->os_dsl_dataset, nvp, flags)); } void dsl_prop_nvlist_add_uint64(nvlist_t *nv, zfs_prop_t prop, uint64_t value) { nvlist_t *propval; + const char *propname = zfs_prop_to_name(prop); + uint64_t default_value; + + if (nvlist_lookup_nvlist(nv, propname, &propval) == 0) { + VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0); + return; + } VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); VERIFY(nvlist_add_uint64(propval, ZPROP_VALUE, value) == 0); - VERIFY(nvlist_add_nvlist(nv, zfs_prop_to_name(prop), propval) == 0); + /* Indicate the default source if we can. */ + if (dodefault(propname, 8, 1, &default_value) == 0 && + value == default_value) { + VERIFY(nvlist_add_string(propval, ZPROP_SOURCE, "") == 0); + } + VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0); nvlist_free(propval); } @@ -657,9 +1139,15 @@ void dsl_prop_nvlist_add_string(nvlist_t *nv, zfs_prop_t prop, const char *value) { nvlist_t *propval; + const char *propname = zfs_prop_to_name(prop); + + if (nvlist_lookup_nvlist(nv, propname, &propval) == 0) { + VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0); + return; + } VERIFY(nvlist_alloc(&propval, NV_UNIQUE_NAME, KM_SLEEP) == 0); VERIFY(nvlist_add_string(propval, ZPROP_VALUE, value) == 0); - VERIFY(nvlist_add_nvlist(nv, zfs_prop_to_name(prop), propval) == 0); + VERIFY(nvlist_add_nvlist(nv, propname, propval) == 0); nvlist_free(propval); } |