*/
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013 by Delphix. All rights reserved.
+ * Copyright (c) 2013 Martin Matuska. All rights reserved.
*/
#include <sys/dmu.h>
#include <sys/zio.h>
#include <sys/arc.h>
#include <sys/sunddi.h>
+#include <sys/zvol.h>
#include "zfs_namecheck.h"
static uint64_t dsl_dir_space_towrite(dsl_dir_t *dd);
-static void dsl_dir_set_reservation_sync(void *arg1, void *arg2, dmu_tx_t *tx);
-
/* ARGSUSED */
static void
dsl_dir_evict(dmu_buf_t *db, void *arg)
{
dsl_dir_t *dd = arg;
- ASSERTV(dsl_pool_t *dp = dd->dd_pool;)
int t;
+ ASSERTV(dsl_pool_t *dp = dd->dd_pool);
for (t = 0; t < TXG_SIZE; t++) {
ASSERT(!txg_list_member(&dp->dp_dirty_dirs, dd, t));
}
if (dd->dd_parent)
- dsl_dir_close(dd->dd_parent, dd);
+ dsl_dir_rele(dd->dd_parent, dd);
spa_close(dd->dd_pool->dp_spa, dd);
}
int
-dsl_dir_open_obj(dsl_pool_t *dp, uint64_t ddobj,
+dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj,
const char *tail, void *tag, dsl_dir_t **ddp)
{
dmu_buf_t *dbuf;
dsl_dir_t *dd;
int err;
- ASSERT(RW_LOCK_HELD(&dp->dp_config_rwlock) ||
- dsl_pool_sync_context(dp));
+ ASSERT(dsl_pool_config_held(dp));
err = dmu_bonus_hold(dp->dp_meta_objset, ddobj, tag, &dbuf);
- if (err)
+ if (err != 0)
return (err);
dd = dmu_buf_get_user(dbuf);
#ifdef ZFS_DEBUG
dsl_dir_snap_cmtime_update(dd);
if (dd->dd_phys->dd_parent_obj) {
- err = dsl_dir_open_obj(dp, dd->dd_phys->dd_parent_obj,
+ err = dsl_dir_hold_obj(dp, dd->dd_phys->dd_parent_obj,
NULL, dd, &dd->dd_parent);
- if (err)
+ if (err != 0)
goto errout;
if (tail) {
#ifdef ZFS_DEBUG
dd->dd_parent->dd_phys->dd_child_dir_zapobj,
ddobj, 0, dd->dd_myname);
}
- if (err)
+ if (err != 0)
goto errout;
} else {
(void) strcpy(dd->dd_myname, spa_name(dp->dp_spa));
*/
err = dmu_bonus_hold(dp->dp_meta_objset,
dd->dd_phys->dd_origin_obj, FTAG, &origin_bonus);
- if (err)
+ if (err != 0)
goto errout;
origin_phys = origin_bonus->db_data;
dd->dd_origin_txg =
dsl_dir_evict);
if (winner) {
if (dd->dd_parent)
- dsl_dir_close(dd->dd_parent, dd);
+ dsl_dir_rele(dd->dd_parent, dd);
mutex_destroy(&dd->dd_lock);
kmem_free(dd, sizeof (dsl_dir_t));
dd = winner;
errout:
if (dd->dd_parent)
- dsl_dir_close(dd->dd_parent, dd);
+ dsl_dir_rele(dd->dd_parent, dd);
mutex_destroy(&dd->dd_lock);
kmem_free(dd, sizeof (dsl_dir_t));
dmu_buf_rele(dbuf, tag);
return (err);
-
}
void
-dsl_dir_close(dsl_dir_t *dd, void *tag)
+dsl_dir_rele(dsl_dir_t *dd, void *tag)
{
dprintf_dd(dd, "%s\n", "");
spa_close(dd->dd_pool->dp_spa, tag);
}
}
-/* Calculate name legnth, avoiding all the strcat calls of dsl_dir_name */
+/* Calculate name length, avoiding all the strcat calls of dsl_dir_name */
int
dsl_dir_namelen(dsl_dir_t *dd)
{
getcomponent(const char *path, char *component, const char **nextp)
{
char *p;
+
if ((path == NULL) || (path[0] == '\0'))
- return (ENOENT);
+ return (SET_ERROR(ENOENT));
/* This would be a good place to reserve some namespace... */
p = strpbrk(path, "/@");
if (p && (p[1] == '/' || p[1] == '@')) {
/* two separators in a row */
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
}
if (p == NULL || p == path) {
/*
*/
if (p != NULL &&
(p[0] != '@' || strpbrk(path+1, "/@") || p[1] == '\0'))
- return (EINVAL);
+ return (SET_ERROR(EINVAL));
if (strlen(path) >= MAXNAMELEN)
- return (ENAMETOOLONG);
+ return (SET_ERROR(ENAMETOOLONG));
(void) strcpy(component, path);
p = NULL;
} else if (p[0] == '/') {
- if (p-path >= MAXNAMELEN)
- return (ENAMETOOLONG);
+ if (p - path >= MAXNAMELEN)
+ return (SET_ERROR(ENAMETOOLONG));
(void) strncpy(component, path, p - path);
- component[p-path] = '\0';
+ component[p - path] = '\0';
p++;
} else if (p[0] == '@') {
/*
* any more slashes.
*/
if (strchr(path, '/'))
- return (EINVAL);
- if (p-path >= MAXNAMELEN)
- return (ENAMETOOLONG);
+ return (SET_ERROR(EINVAL));
+ if (p - path >= MAXNAMELEN)
+ return (SET_ERROR(ENAMETOOLONG));
(void) strncpy(component, path, p - path);
- component[p-path] = '\0';
+ component[p - path] = '\0';
} else {
- ASSERT(!"invalid p");
+ panic("invalid p=%p", (void *)p);
}
*nextp = p;
return (0);
}
/*
- * same as dsl_open_dir, ignore the first component of name and use the
- * spa instead
+ * Return the dsl_dir_t, and possibly the last component which couldn't
+ * be found in *tail. The name must be in the specified dsl_pool_t. This
+ * thread must hold the dp_config_rwlock for the pool. Returns NULL if the
+ * path is bogus, or if tail==NULL and we couldn't parse the whole name.
+ * (*tail)[0] == '@' means that the last component is a snapshot.
*/
int
-dsl_dir_open_spa(spa_t *spa, const char *name, void *tag,
+dsl_dir_hold(dsl_pool_t *dp, const char *name, void *tag,
dsl_dir_t **ddp, const char **tailp)
{
char *buf;
- const char *next, *nextnext = NULL;
+ const char *spaname, *next, *nextnext = NULL;
int err;
dsl_dir_t *dd;
- dsl_pool_t *dp;
uint64_t ddobj;
- int openedspa = FALSE;
- dprintf("%s\n", name);
-
- buf = kmem_alloc(MAXNAMELEN, KM_SLEEP);
+ buf = kmem_alloc(MAXNAMELEN, KM_PUSHPAGE);
err = getcomponent(name, buf, &next);
- if (err)
+ if (err != 0)
goto error;
- if (spa == NULL) {
- err = spa_open(buf, &spa, FTAG);
- if (err) {
- dprintf("spa_open(%s) failed\n", buf);
- goto error;
- }
- openedspa = TRUE;
- /* XXX this assertion belongs in spa_open */
- ASSERT(!dsl_pool_sync_context(spa_get_dsl(spa)));
+ /* Make sure the name is in the specified pool. */
+ spaname = spa_name(dp->dp_spa);
+ if (strcmp(buf, spaname) != 0) {
+ err = SET_ERROR(EINVAL);
+ goto error;
}
- dp = spa_get_dsl(spa);
+ ASSERT(dsl_pool_config_held(dp));
- rw_enter(&dp->dp_config_rwlock, RW_READER);
- err = dsl_dir_open_obj(dp, dp->dp_root_dir_obj, NULL, tag, &dd);
- if (err) {
- rw_exit(&dp->dp_config_rwlock);
- if (openedspa)
- spa_close(spa, FTAG);
+ err = dsl_dir_hold_obj(dp, dp->dp_root_dir_obj, NULL, tag, &dd);
+ if (err != 0) {
goto error;
}
while (next != NULL) {
dsl_dir_t *child_ds;
err = getcomponent(next, buf, &nextnext);
- if (err)
+ if (err != 0)
break;
ASSERT(next[0] != '\0');
if (next[0] == '@')
err = zap_lookup(dp->dp_meta_objset,
dd->dd_phys->dd_child_dir_zapobj,
buf, sizeof (ddobj), 1, &ddobj);
- if (err) {
+ if (err != 0) {
if (err == ENOENT)
err = 0;
break;
}
- err = dsl_dir_open_obj(dp, ddobj, buf, tag, &child_ds);
- if (err)
+ err = dsl_dir_hold_obj(dp, ddobj, buf, tag, &child_ds);
+ if (err != 0)
break;
- dsl_dir_close(dd, tag);
+ dsl_dir_rele(dd, tag);
dd = child_ds;
next = nextnext;
}
- rw_exit(&dp->dp_config_rwlock);
- if (err) {
- dsl_dir_close(dd, tag);
- if (openedspa)
- spa_close(spa, FTAG);
+ if (err != 0) {
+ dsl_dir_rele(dd, tag);
goto error;
}
if (next != NULL &&
(tailp == NULL || (nextnext && nextnext[0] != '\0'))) {
/* bad path name */
- dsl_dir_close(dd, tag);
+ dsl_dir_rele(dd, tag);
dprintf("next=%p (%s) tail=%p\n", next, next?next:"", tailp);
- err = ENOENT;
+ err = SET_ERROR(ENOENT);
}
- if (tailp)
+ if (tailp != NULL)
*tailp = next;
- if (openedspa)
- spa_close(spa, FTAG);
*ddp = dd;
error:
kmem_free(buf, MAXNAMELEN);
return (err);
}
-/*
- * Return the dsl_dir_t, and possibly the last component which couldn't
- * be found in *tail. Return NULL if the path is bogus, or if
- * tail==NULL and we couldn't parse the whole name. (*tail)[0] == '@'
- * means that the last component is a snapshot.
- */
-int
-dsl_dir_open(const char *name, void *tag, dsl_dir_t **ddp, const char **tailp)
-{
- return (dsl_dir_open_spa(NULL, name, tag, ddp, tailp));
-}
-
uint64_t
dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds, const char *name,
dmu_tx_t *tx)
return (ddobj);
}
-/* ARGSUSED */
-int
-dsl_dir_destroy_check(void *arg1, void *arg2, dmu_tx_t *tx)
-{
- dsl_dataset_t *ds = arg1;
- dsl_dir_t *dd = ds->ds_dir;
- dsl_pool_t *dp = dd->dd_pool;
- objset_t *mos = dp->dp_meta_objset;
- int err;
- uint64_t count;
-
- /*
- * There should be exactly two holds, both from
- * dsl_dataset_destroy: one on the dd directory, and one on its
- * head ds. Otherwise, someone is trying to lookup something
- * inside this dir while we want to destroy it. The
- * config_rwlock ensures that nobody else opens it after we
- * check.
- */
- if (dmu_buf_refcount(dd->dd_dbuf) > 2)
- return (EBUSY);
-
- err = zap_count(mos, dd->dd_phys->dd_child_dir_zapobj, &count);
- if (err)
- return (err);
- if (count != 0)
- return (EEXIST);
-
- return (0);
-}
-
-void
-dsl_dir_destroy_sync(void *arg1, void *tag, dmu_tx_t *tx)
-{
- dsl_dataset_t *ds = arg1;
- dsl_dir_t *dd = ds->ds_dir;
- objset_t *mos = dd->dd_pool->dp_meta_objset;
- dsl_prop_setarg_t psa;
- uint64_t value = 0;
- uint64_t obj;
- dd_used_t t;
-
- ASSERT(RW_WRITE_HELD(&dd->dd_pool->dp_config_rwlock));
- ASSERT(dd->dd_phys->dd_head_dataset_obj == 0);
-
- /* Remove our reservation. */
- dsl_prop_setarg_init_uint64(&psa, "reservation",
- (ZPROP_SRC_NONE | ZPROP_SRC_LOCAL | ZPROP_SRC_RECEIVED),
- &value);
- psa.psa_effective_value = 0; /* predict default value */
-
- dsl_dir_set_reservation_sync(ds, &psa, tx);
-
- ASSERT3U(dd->dd_phys->dd_used_bytes, ==, 0);
- ASSERT3U(dd->dd_phys->dd_reserved, ==, 0);
- for (t = 0; t < DD_USED_NUM; t++)
- ASSERT3U(dd->dd_phys->dd_used_breakdown[t], ==, 0);
-
- VERIFY(0 == zap_destroy(mos, dd->dd_phys->dd_child_dir_zapobj, tx));
- VERIFY(0 == zap_destroy(mos, dd->dd_phys->dd_props_zapobj, tx));
- VERIFY(0 == dsl_deleg_destroy(mos, dd->dd_phys->dd_deleg_zapobj, tx));
- VERIFY(0 == zap_remove(mos,
- dd->dd_parent->dd_phys->dd_child_dir_zapobj, dd->dd_myname, tx));
-
- obj = dd->dd_object;
- dsl_dir_close(dd, tag);
- VERIFY(0 == dmu_object_free(mos, obj, tx));
-}
-
boolean_t
dsl_dir_is_clone(dsl_dir_t *dd)
{
dd->dd_phys->dd_compressed_bytes == 0 ? 100 :
(dd->dd_phys->dd_uncompressed_bytes * 100 /
dd->dd_phys->dd_compressed_bytes));
+ dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_LOGICALUSED,
+ dd->dd_phys->dd_uncompressed_bytes);
if (dd->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN) {
dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USEDSNAP,
dd->dd_phys->dd_used_breakdown[DD_USED_SNAP]);
}
mutex_exit(&dd->dd_lock);
- rw_enter(&dd->dd_pool->dp_config_rwlock, RW_READER);
if (dsl_dir_is_clone(dd)) {
dsl_dataset_t *ds;
char buf[MAXNAMELEN];
- VERIFY(0 == dsl_dataset_hold_obj(dd->dd_pool,
+ VERIFY0(dsl_dataset_hold_obj(dd->dd_pool,
dd->dd_phys->dd_origin_obj, FTAG, &ds));
dsl_dataset_name(ds, buf);
dsl_dataset_rele(ds, FTAG);
dsl_prop_nvlist_add_string(nv, ZFS_PROP_ORIGIN, buf);
}
- rw_exit(&dd->dd_pool->dp_config_rwlock);
}
void
ASSERT(dd->dd_phys);
- if (txg_list_add(&dp->dp_dirty_dirs, dd, tx->tx_txg) == 0) {
+ if (txg_list_add(&dp->dp_dirty_dirs, dd, tx->tx_txg)) {
/* up the hold count until we can be written out */
dmu_buf_add_ref(dd->dd_dbuf, dd);
}
{
ASSERT(dmu_tx_is_syncing(tx));
- dmu_buf_will_dirty(dd->dd_dbuf, tx);
-
mutex_enter(&dd->dd_lock);
- ASSERT3U(dd->dd_tempreserved[tx->tx_txg&TXG_MASK], ==, 0);
+ ASSERT0(dd->dd_tempreserved[tx->tx_txg&TXG_MASK]);
dprintf_dd(dd, "txg=%llu towrite=%lluK\n", tx->tx_txg,
dd->dd_space_towrite[tx->tx_txg&TXG_MASK] / 1024);
dd->dd_space_towrite[tx->tx_txg&TXG_MASK] = 0;
struct tempreserve {
list_node_t tr_node;
- dsl_pool_t *tr_dp;
dsl_dir_t *tr_ds;
uint64_t tr_size;
};
used_on_disk>>10, est_inflight>>10,
quota>>10, asize>>10, retval);
mutex_exit(&dd->dd_lock);
- return (retval);
+ return (SET_ERROR(retval));
}
/* We need to up our estimated delta before dropping dd_lock */
tr = kmem_zalloc(sizeof (struct tempreserve), KM_PUSHPAGE);
tr->tr_size = lsize;
list_insert_tail(tr_list, tr);
-
- err = dsl_pool_tempreserve_space(dd->dd_pool, asize, tx);
} else {
if (err == EAGAIN) {
- txg_delay(dd->dd_pool, tx->tx_txg, 1);
- err = ERESTART;
+ /*
+ * If arc_memory_throttle() detected that pageout
+ * is running and we are low on memory, we delay new
+ * non-pageout transactions to give pageout an
+ * advantage.
+ *
+ * It is unfortunate to be delaying while the caller's
+ * locks are held.
+ */
+ txg_delay(dd->dd_pool, tx->tx_txg,
+ MSEC2NSEC(10), MSEC2NSEC(10));
+ err = SET_ERROR(ERESTART);
}
- dsl_pool_memory_pressure(dd->dd_pool);
}
if (err == 0) {
- struct tempreserve *tr;
-
- tr = kmem_zalloc(sizeof (struct tempreserve), KM_PUSHPAGE);
- tr->tr_dp = dd->dd_pool;
- tr->tr_size = asize;
- list_insert_tail(tr_list, tr);
-
err = dsl_dir_tempreserve_impl(dd, asize, fsize >= asize,
FALSE, asize > usize, tr_list, tx, TRUE);
}
- if (err)
+ if (err != 0)
dsl_dir_tempreserve_clear(tr_list, tx);
else
*tr_cookiep = tr_list;
if (tr_cookie == NULL)
return;
- while ((tr = list_head(tr_list))) {
- if (tr->tr_dp) {
- dsl_pool_tempreserve_clear(tr->tr_dp, tr->tr_size, tx);
- } else if (tr->tr_ds) {
+ while ((tr = list_head(tr_list)) != NULL) {
+ if (tr->tr_ds) {
mutex_enter(&tr->tr_ds->dd_lock);
ASSERT3U(tr->tr_ds->dd_tempreserved[txgidx], >=,
tr->tr_size);
kmem_free(tr_list, sizeof (list_t));
}
-static void
-dsl_dir_willuse_space_impl(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx)
+/*
+ * This should be called from open context when we think we're going to write
+ * or free space, for example when dirtying data. Be conservative; it's okay
+ * to write less space or free more, but we don't want to write more or free
+ * less than the amount specified.
+ */
+void
+dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx)
{
int64_t parent_space;
uint64_t est_used;
/* XXX this is potentially expensive and unnecessary... */
if (parent_space && dd->dd_parent)
- dsl_dir_willuse_space_impl(dd->dd_parent, parent_space, tx);
-}
-
-/*
- * Call in open context when we think we're going to write/free space,
- * eg. when dirtying data. Be conservative (ie. OK to write less than
- * this or free more than this, but don't write more or free less).
- */
-void
-dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx)
-{
- dsl_pool_willuse_space(dd->dd_pool, space, tx);
- dsl_dir_willuse_space_impl(dd, space, tx);
+ dsl_dir_willuse_space(dd->dd_parent, parent_space, tx);
}
/* call from syncing context when we actually write/free space for this dd */
int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx)
{
int64_t accounted_delta;
+
+ /*
+ * dsl_dataset_set_refreservation_sync_impl() calls this with
+ * dd_lock held, so that it can atomically update
+ * ds->ds_reserved and the dsl_dir accounting, so that
+ * dsl_dataset_check_quota() can see dataset and dir accounting
+ * consistently.
+ */
boolean_t needlock = !MUTEX_HELD(&dd->dd_lock);
ASSERT(dmu_tx_is_syncing(tx));
ASSERT(type < DD_USED_NUM);
- dsl_dir_dirty(dd, tx);
+ dmu_buf_will_dirty(dd->dd_dbuf, tx);
if (needlock)
mutex_enter(&dd->dd_lock);
dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta,
dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx)
{
- boolean_t needlock = !MUTEX_HELD(&dd->dd_lock);
-
ASSERT(dmu_tx_is_syncing(tx));
ASSERT(oldtype < DD_USED_NUM);
ASSERT(newtype < DD_USED_NUM);
if (delta == 0 || !(dd->dd_phys->dd_flags & DD_FLAG_USED_BREAKDOWN))
return;
- dsl_dir_dirty(dd, tx);
- if (needlock)
- mutex_enter(&dd->dd_lock);
+ dmu_buf_will_dirty(dd->dd_dbuf, tx);
+ mutex_enter(&dd->dd_lock);
ASSERT(delta > 0 ?
dd->dd_phys->dd_used_breakdown[oldtype] >= delta :
dd->dd_phys->dd_used_breakdown[newtype] >= -delta);
ASSERT(dd->dd_phys->dd_used_bytes >= ABS(delta));
dd->dd_phys->dd_used_breakdown[oldtype] -= delta;
dd->dd_phys->dd_used_breakdown[newtype] += delta;
- if (needlock)
- mutex_exit(&dd->dd_lock);
+ mutex_exit(&dd->dd_lock);
}
+typedef struct dsl_dir_set_qr_arg {
+ const char *ddsqra_name;
+ zprop_source_t ddsqra_source;
+ uint64_t ddsqra_value;
+} dsl_dir_set_qr_arg_t;
+
static int
-dsl_dir_set_quota_check(void *arg1, void *arg2, dmu_tx_t *tx)
+dsl_dir_set_quota_check(void *arg, dmu_tx_t *tx)
{
- dsl_dataset_t *ds = arg1;
- dsl_dir_t *dd = ds->ds_dir;
- dsl_prop_setarg_t *psa = arg2;
- int err;
- uint64_t towrite;
+ dsl_dir_set_qr_arg_t *ddsqra = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
+ dsl_dataset_t *ds;
+ int error;
+ uint64_t towrite, newval;
- if ((err = dsl_prop_predict_sync(ds->ds_dir, psa)) != 0)
- return (err);
+ error = dsl_dataset_hold(dp, ddsqra->ddsqra_name, FTAG, &ds);
+ if (error != 0)
+ return (error);
+
+ error = dsl_prop_predict(ds->ds_dir, "quota",
+ ddsqra->ddsqra_source, ddsqra->ddsqra_value, &newval);
+ if (error != 0) {
+ dsl_dataset_rele(ds, FTAG);
+ return (error);
+ }
- if (psa->psa_effective_value == 0)
+ if (newval == 0) {
+ dsl_dataset_rele(ds, FTAG);
return (0);
+ }
- mutex_enter(&dd->dd_lock);
+ mutex_enter(&ds->ds_dir->dd_lock);
/*
* If we are doing the preliminary check in open context, and
* there are pending changes, then don't fail it, since the
* pending changes could under-estimate the amount of space to be
* freed up.
*/
- towrite = dsl_dir_space_towrite(dd);
+ towrite = dsl_dir_space_towrite(ds->ds_dir);
if ((dmu_tx_is_syncing(tx) || towrite == 0) &&
- (psa->psa_effective_value < dd->dd_phys->dd_reserved ||
- psa->psa_effective_value < dd->dd_phys->dd_used_bytes + towrite)) {
- err = ENOSPC;
+ (newval < ds->ds_dir->dd_phys->dd_reserved ||
+ newval < ds->ds_dir->dd_phys->dd_used_bytes + towrite)) {
+ error = SET_ERROR(ENOSPC);
}
- mutex_exit(&dd->dd_lock);
- return (err);
+ mutex_exit(&ds->ds_dir->dd_lock);
+ dsl_dataset_rele(ds, FTAG);
+ return (error);
}
-extern dsl_syncfunc_t dsl_prop_set_sync;
-
static void
-dsl_dir_set_quota_sync(void *arg1, void *arg2, dmu_tx_t *tx)
+dsl_dir_set_quota_sync(void *arg, dmu_tx_t *tx)
{
- dsl_dataset_t *ds = arg1;
- dsl_dir_t *dd = ds->ds_dir;
- dsl_prop_setarg_t *psa = arg2;
- uint64_t effective_value = psa->psa_effective_value;
+ dsl_dir_set_qr_arg_t *ddsqra = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
+ dsl_dataset_t *ds;
+ uint64_t newval;
- dsl_prop_set_sync(ds, psa, tx);
- DSL_PROP_CHECK_PREDICTION(dd, psa);
+ VERIFY0(dsl_dataset_hold(dp, ddsqra->ddsqra_name, FTAG, &ds));
- dmu_buf_will_dirty(dd->dd_dbuf, tx);
+ if (spa_version(dp->dp_spa) >= SPA_VERSION_RECVD_PROPS) {
+ dsl_prop_set_sync_impl(ds, zfs_prop_to_name(ZFS_PROP_QUOTA),
+ ddsqra->ddsqra_source, sizeof (ddsqra->ddsqra_value), 1,
+ &ddsqra->ddsqra_value, tx);
- mutex_enter(&dd->dd_lock);
- dd->dd_phys->dd_quota = effective_value;
- mutex_exit(&dd->dd_lock);
+ VERIFY0(dsl_prop_get_int_ds(ds,
+ zfs_prop_to_name(ZFS_PROP_QUOTA), &newval));
+ } else {
+ newval = ddsqra->ddsqra_value;
+ spa_history_log_internal_ds(ds, "set", tx, "%s=%lld",
+ zfs_prop_to_name(ZFS_PROP_QUOTA), (longlong_t)newval);
+ }
- spa_history_log_internal(LOG_DS_QUOTA, dd->dd_pool->dp_spa,
- tx, "%lld dataset = %llu ",
- (longlong_t)effective_value, dd->dd_phys->dd_head_dataset_obj);
+ dmu_buf_will_dirty(ds->ds_dir->dd_dbuf, tx);
+ mutex_enter(&ds->ds_dir->dd_lock);
+ ds->ds_dir->dd_phys->dd_quota = newval;
+ mutex_exit(&ds->ds_dir->dd_lock);
+ dsl_dataset_rele(ds, FTAG);
}
int
dsl_dir_set_quota(const char *ddname, zprop_source_t source, uint64_t quota)
{
- dsl_dir_t *dd;
- dsl_dataset_t *ds;
- dsl_prop_setarg_t psa;
- int err;
+ dsl_dir_set_qr_arg_t ddsqra;
- dsl_prop_setarg_init_uint64(&psa, "quota", source, "a);
+ ddsqra.ddsqra_name = ddname;
+ ddsqra.ddsqra_source = source;
+ ddsqra.ddsqra_value = quota;
- err = dsl_dataset_hold(ddname, FTAG, &ds);
- if (err)
- return (err);
-
- err = dsl_dir_open(ddname, FTAG, &dd, NULL);
- if (err) {
- dsl_dataset_rele(ds, FTAG);
- return (err);
- }
-
- ASSERT(ds->ds_dir == dd);
-
- /*
- * If someone removes a file, then tries to set the quota, we want to
- * make sure the file freeing takes effect.
- */
- txg_wait_open(dd->dd_pool, 0);
-
- err = dsl_sync_task_do(dd->dd_pool, dsl_dir_set_quota_check,
- dsl_dir_set_quota_sync, ds, &psa, 0);
-
- dsl_dir_close(dd, FTAG);
- dsl_dataset_rele(ds, FTAG);
- return (err);
+ return (dsl_sync_task(ddname, dsl_dir_set_quota_check,
+ dsl_dir_set_quota_sync, &ddsqra, 0));
}
int
-dsl_dir_set_reservation_check(void *arg1, void *arg2, dmu_tx_t *tx)
+dsl_dir_set_reservation_check(void *arg, dmu_tx_t *tx)
{
- dsl_dataset_t *ds = arg1;
- dsl_dir_t *dd = ds->ds_dir;
- dsl_prop_setarg_t *psa = arg2;
- uint64_t effective_value;
- uint64_t used, avail;
- int err;
-
- if ((err = dsl_prop_predict_sync(ds->ds_dir, psa)) != 0)
- return (err);
+ dsl_dir_set_qr_arg_t *ddsqra = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
+ dsl_dataset_t *ds;
+ dsl_dir_t *dd;
+ uint64_t newval, used, avail;
+ int error;
- effective_value = psa->psa_effective_value;
+ error = dsl_dataset_hold(dp, ddsqra->ddsqra_name, FTAG, &ds);
+ if (error != 0)
+ return (error);
+ dd = ds->ds_dir;
/*
* If we are doing the preliminary check in open context, the
* space estimates may be inaccurate.
*/
- if (!dmu_tx_is_syncing(tx))
+ if (!dmu_tx_is_syncing(tx)) {
+ dsl_dataset_rele(ds, FTAG);
return (0);
+ }
+
+ error = dsl_prop_predict(ds->ds_dir,
+ zfs_prop_to_name(ZFS_PROP_RESERVATION),
+ ddsqra->ddsqra_source, ddsqra->ddsqra_value, &newval);
+ if (error != 0) {
+ dsl_dataset_rele(ds, FTAG);
+ return (error);
+ }
mutex_enter(&dd->dd_lock);
used = dd->dd_phys->dd_used_bytes;
avail = dsl_pool_adjustedsize(dd->dd_pool, B_FALSE) - used;
}
- if (MAX(used, effective_value) > MAX(used, dd->dd_phys->dd_reserved)) {
- uint64_t delta = MAX(used, effective_value) -
+ if (MAX(used, newval) > MAX(used, dd->dd_phys->dd_reserved)) {
+ uint64_t delta = MAX(used, newval) -
MAX(used, dd->dd_phys->dd_reserved);
- if (delta > avail)
- return (ENOSPC);
- if (dd->dd_phys->dd_quota > 0 &&
- effective_value > dd->dd_phys->dd_quota)
- return (ENOSPC);
+ if (delta > avail ||
+ (dd->dd_phys->dd_quota > 0 &&
+ newval > dd->dd_phys->dd_quota))
+ error = SET_ERROR(ENOSPC);
}
- return (0);
+ dsl_dataset_rele(ds, FTAG);
+ return (error);
}
-static void
-dsl_dir_set_reservation_sync(void *arg1, void *arg2, dmu_tx_t *tx)
+void
+dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value, dmu_tx_t *tx)
{
- dsl_dataset_t *ds = arg1;
- dsl_dir_t *dd = ds->ds_dir;
- dsl_prop_setarg_t *psa = arg2;
- uint64_t effective_value = psa->psa_effective_value;
uint64_t used;
int64_t delta;
- dsl_prop_set_sync(ds, psa, tx);
- DSL_PROP_CHECK_PREDICTION(dd, psa);
-
dmu_buf_will_dirty(dd->dd_dbuf, tx);
mutex_enter(&dd->dd_lock);
used = dd->dd_phys->dd_used_bytes;
- delta = MAX(used, effective_value) -
- MAX(used, dd->dd_phys->dd_reserved);
- dd->dd_phys->dd_reserved = effective_value;
+ delta = MAX(used, value) - MAX(used, dd->dd_phys->dd_reserved);
+ dd->dd_phys->dd_reserved = value;
if (dd->dd_parent != NULL) {
/* Roll up this additional usage into our ancestors */
delta, 0, 0, tx);
}
mutex_exit(&dd->dd_lock);
-
- spa_history_log_internal(LOG_DS_RESERVATION, dd->dd_pool->dp_spa,
- tx, "%lld dataset = %llu",
- (longlong_t)effective_value, dd->dd_phys->dd_head_dataset_obj);
}
-int
-dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
- uint64_t reservation)
+static void
+dsl_dir_set_reservation_sync(void *arg, dmu_tx_t *tx)
{
- dsl_dir_t *dd;
+ dsl_dir_set_qr_arg_t *ddsqra = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
dsl_dataset_t *ds;
- dsl_prop_setarg_t psa;
- int err;
+ uint64_t newval;
- dsl_prop_setarg_init_uint64(&psa, "reservation", source, &reservation);
+ VERIFY0(dsl_dataset_hold(dp, ddsqra->ddsqra_name, FTAG, &ds));
- err = dsl_dataset_hold(ddname, FTAG, &ds);
- if (err)
- return (err);
+ if (spa_version(dp->dp_spa) >= SPA_VERSION_RECVD_PROPS) {
+ dsl_prop_set_sync_impl(ds,
+ zfs_prop_to_name(ZFS_PROP_RESERVATION),
+ ddsqra->ddsqra_source, sizeof (ddsqra->ddsqra_value), 1,
+ &ddsqra->ddsqra_value, tx);
- err = dsl_dir_open(ddname, FTAG, &dd, NULL);
- if (err) {
- dsl_dataset_rele(ds, FTAG);
- return (err);
+ VERIFY0(dsl_prop_get_int_ds(ds,
+ zfs_prop_to_name(ZFS_PROP_RESERVATION), &newval));
+ } else {
+ newval = ddsqra->ddsqra_value;
+ spa_history_log_internal_ds(ds, "set", tx, "%s=%lld",
+ zfs_prop_to_name(ZFS_PROP_RESERVATION),
+ (longlong_t)newval);
}
- ASSERT(ds->ds_dir == dd);
+ dsl_dir_set_reservation_sync_impl(ds->ds_dir, newval, tx);
+ dsl_dataset_rele(ds, FTAG);
+}
+
+int
+dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
+ uint64_t reservation)
+{
+ dsl_dir_set_qr_arg_t ddsqra;
- err = dsl_sync_task_do(dd->dd_pool, dsl_dir_set_reservation_check,
- dsl_dir_set_reservation_sync, ds, &psa, 0);
+ ddsqra.ddsqra_name = ddname;
+ ddsqra.ddsqra_source = source;
+ ddsqra.ddsqra_value = reservation;
- dsl_dir_close(dd, FTAG);
- dsl_dataset_rele(ds, FTAG);
- return (err);
+ return (dsl_sync_task(ddname, dsl_dir_set_reservation_check,
+ dsl_dir_set_reservation_sync, &ddsqra, 0));
}
static dsl_dir_t *
return (would_change(dd->dd_parent, delta, ancestor));
}
-struct renamearg {
- dsl_dir_t *newparent;
- const char *mynewname;
-};
+typedef struct dsl_dir_rename_arg {
+ const char *ddra_oldname;
+ const char *ddra_newname;
+} dsl_dir_rename_arg_t;
+
+/* ARGSUSED */
+static int
+dsl_valid_rename(dsl_pool_t *dp, dsl_dataset_t *ds, void *arg)
+{
+ int *deltap = arg;
+ char namebuf[MAXNAMELEN];
+
+ dsl_dataset_name(ds, namebuf);
+
+ if (strlen(namebuf) + *deltap >= MAXNAMELEN)
+ return (SET_ERROR(ENAMETOOLONG));
+ return (0);
+}
static int
-dsl_dir_rename_check(void *arg1, void *arg2, dmu_tx_t *tx)
+dsl_dir_rename_check(void *arg, dmu_tx_t *tx)
{
- dsl_dir_t *dd = arg1;
- struct renamearg *ra = arg2;
- dsl_pool_t *dp = dd->dd_pool;
- objset_t *mos = dp->dp_meta_objset;
- int err;
- uint64_t val;
+ dsl_dir_rename_arg_t *ddra = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
+ dsl_dir_t *dd, *newparent;
+ const char *mynewname;
+ int error;
+ int delta = strlen(ddra->ddra_newname) - strlen(ddra->ddra_oldname);
- /*
- * There should only be one reference, from dmu_objset_rename().
- * Fleeting holds are also possible (eg, from "zfs list" getting
- * stats), but any that are present in open context will likely
- * be gone by syncing context, so only fail from syncing
- * context.
- */
- if (dmu_tx_is_syncing(tx) && dmu_buf_refcount(dd->dd_dbuf) > 1)
- return (EBUSY);
-
- /* check for existing name */
- err = zap_lookup(mos, ra->newparent->dd_phys->dd_child_dir_zapobj,
- ra->mynewname, 8, 1, &val);
- if (err == 0)
- return (EEXIST);
- if (err != ENOENT)
- return (err);
+ /* target dir should exist */
+ error = dsl_dir_hold(dp, ddra->ddra_oldname, FTAG, &dd, NULL);
+ if (error != 0)
+ return (error);
+
+ /* new parent should exist */
+ error = dsl_dir_hold(dp, ddra->ddra_newname, FTAG,
+ &newparent, &mynewname);
+ if (error != 0) {
+ dsl_dir_rele(dd, FTAG);
+ return (error);
+ }
+
+ /* can't rename to different pool */
+ if (dd->dd_pool != newparent->dd_pool) {
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
+ return (SET_ERROR(ENXIO));
+ }
+
+ /* new name should not already exist */
+ if (mynewname == NULL) {
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
+ return (SET_ERROR(EEXIST));
+ }
+
+ /* if the name length is growing, validate child name lengths */
+ if (delta > 0) {
+ error = dmu_objset_find_dp(dp, dd->dd_object, dsl_valid_rename,
+ &delta, DS_FIND_CHILDREN | DS_FIND_SNAPSHOTS);
+ if (error != 0) {
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
+ return (error);
+ }
+ }
- if (ra->newparent != dd->dd_parent) {
+ if (newparent != dd->dd_parent) {
/* is there enough space? */
uint64_t myspace =
MAX(dd->dd_phys->dd_used_bytes, dd->dd_phys->dd_reserved);
/* no rename into our descendant */
- if (closest_common_ancestor(dd, ra->newparent) == dd)
- return (EINVAL);
+ if (closest_common_ancestor(dd, newparent) == dd) {
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
+ return (SET_ERROR(EINVAL));
+ }
- if ((err = dsl_dir_transfer_possible(dd->dd_parent,
- ra->newparent, myspace)))
- return (err);
+ error = dsl_dir_transfer_possible(dd->dd_parent,
+ newparent, myspace);
+ if (error != 0) {
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
+ return (error);
+ }
}
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
return (0);
}
static void
-dsl_dir_rename_sync(void *arg1, void *arg2, dmu_tx_t *tx)
+dsl_dir_rename_sync(void *arg, dmu_tx_t *tx)
{
- dsl_dir_t *dd = arg1;
- struct renamearg *ra = arg2;
- dsl_pool_t *dp = dd->dd_pool;
+ dsl_dir_rename_arg_t *ddra = arg;
+ dsl_pool_t *dp = dmu_tx_pool(tx);
+ dsl_dir_t *dd, *newparent;
+ const char *mynewname;
+ int error;
objset_t *mos = dp->dp_meta_objset;
- int err;
- ASSERT(dmu_buf_refcount(dd->dd_dbuf) <= 2);
+ VERIFY0(dsl_dir_hold(dp, ddra->ddra_oldname, FTAG, &dd, NULL));
+ VERIFY0(dsl_dir_hold(dp, ddra->ddra_newname, FTAG, &newparent,
+ &mynewname));
- if (ra->newparent != dd->dd_parent) {
+ /* Log this before we change the name. */
+ spa_history_log_internal_dd(dd, "rename", tx,
+ "-> %s", ddra->ddra_newname);
+
+ if (newparent != dd->dd_parent) {
dsl_dir_diduse_space(dd->dd_parent, DD_USED_CHILD,
-dd->dd_phys->dd_used_bytes,
-dd->dd_phys->dd_compressed_bytes,
-dd->dd_phys->dd_uncompressed_bytes, tx);
- dsl_dir_diduse_space(ra->newparent, DD_USED_CHILD,
+ dsl_dir_diduse_space(newparent, DD_USED_CHILD,
dd->dd_phys->dd_used_bytes,
dd->dd_phys->dd_compressed_bytes,
dd->dd_phys->dd_uncompressed_bytes, tx);
dsl_dir_diduse_space(dd->dd_parent, DD_USED_CHILD_RSRV,
-unused_rsrv, 0, 0, tx);
- dsl_dir_diduse_space(ra->newparent, DD_USED_CHILD_RSRV,
+ dsl_dir_diduse_space(newparent, DD_USED_CHILD_RSRV,
unused_rsrv, 0, 0, tx);
}
}
dmu_buf_will_dirty(dd->dd_dbuf, tx);
/* remove from old parent zapobj */
- err = zap_remove(mos, dd->dd_parent->dd_phys->dd_child_dir_zapobj,
+ error = zap_remove(mos, dd->dd_parent->dd_phys->dd_child_dir_zapobj,
dd->dd_myname, tx);
- ASSERT3U(err, ==, 0);
+ ASSERT0(error);
- (void) strcpy(dd->dd_myname, ra->mynewname);
- dsl_dir_close(dd->dd_parent, dd);
- dd->dd_phys->dd_parent_obj = ra->newparent->dd_object;
- VERIFY(0 == dsl_dir_open_obj(dd->dd_pool,
- ra->newparent->dd_object, NULL, dd, &dd->dd_parent));
+ (void) strcpy(dd->dd_myname, mynewname);
+ dsl_dir_rele(dd->dd_parent, dd);
+ dd->dd_phys->dd_parent_obj = newparent->dd_object;
+ VERIFY0(dsl_dir_hold_obj(dp,
+ newparent->dd_object, NULL, dd, &dd->dd_parent));
/* add to new parent zapobj */
- err = zap_add(mos, ra->newparent->dd_phys->dd_child_dir_zapobj,
- dd->dd_myname, 8, 1, &dd->dd_object, tx);
- ASSERT3U(err, ==, 0);
+ VERIFY0(zap_add(mos, newparent->dd_phys->dd_child_dir_zapobj,
+ dd->dd_myname, 8, 1, &dd->dd_object, tx));
+
+#ifdef _KERNEL
+ zvol_rename_minors(ddra->ddra_oldname, ddra->ddra_newname);
+#endif
- spa_history_log_internal(LOG_DS_RENAME, dd->dd_pool->dp_spa,
- tx, "dataset = %llu", dd->dd_phys->dd_head_dataset_obj);
+ dsl_prop_notify_all(dd);
+
+ dsl_dir_rele(newparent, FTAG);
+ dsl_dir_rele(dd, FTAG);
}
int
-dsl_dir_rename(dsl_dir_t *dd, const char *newname)
+dsl_dir_rename(const char *oldname, const char *newname)
{
- struct renamearg ra;
- int err;
-
- /* new parent should exist */
- err = dsl_dir_open(newname, FTAG, &ra.newparent, &ra.mynewname);
- if (err)
- return (err);
-
- /* can't rename to different pool */
- if (dd->dd_pool != ra.newparent->dd_pool) {
- err = ENXIO;
- goto out;
- }
-
- /* new name should not already exist */
- if (ra.mynewname == NULL) {
- err = EEXIST;
- goto out;
- }
+ dsl_dir_rename_arg_t ddra;
- err = dsl_sync_task_do(dd->dd_pool,
- dsl_dir_rename_check, dsl_dir_rename_sync, dd, &ra, 3);
+ ddra.ddra_oldname = oldname;
+ ddra.ddra_newname = newname;
-out:
- dsl_dir_close(ra.newparent, FTAG);
- return (err);
+ return (dsl_sync_task(oldname,
+ dsl_dir_rename_check, dsl_dir_rename_sync, &ddra, 3));
}
int
adelta = would_change(sdd, -space, ancestor);
avail = dsl_dir_space_available(tdd, ancestor, adelta, FALSE);
if (avail < space)
- return (ENOSPC);
+ return (SET_ERROR(ENOSPC));
return (0);
}
#if defined(_KERNEL) && defined(HAVE_SPL)
EXPORT_SYMBOL(dsl_dir_set_quota);
EXPORT_SYMBOL(dsl_dir_set_reservation);
-EXPORT_SYMBOL(dsl_dir_open);
-EXPORT_SYMBOL(dsl_dir_close);
#endif
projects / mirror_zfs.git / blobdiff