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Illumos 3897 - zfs filesystem and snapshot limits

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3897 zfs filesystem and snapshot limits
Author: Jerry Jelinek <jerry.jelinek@joyent.com>
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Christopher Siden <christopher.siden@delphix.com>

References:
  https://www.illumos.org/issues/3897
  https://github.com/illumos/illumos-gate/commit/a2afb61

Porting Notes:

dsl_dataset_snapshot_check(): reduce stack usage using kmem_alloc().

Ported-by: Chris Dunlop <chris@onthe.net.au>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Jerry Jelinek
2015-04-02 00:07:48 +11:00
committed by Brian Behlendorf
parent 308a451f7f
commit 788eb90c4c
19 changed files with 1021 additions and 27 deletions
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include/sys/dsl_dir.h
+17 -1
View File
@@ -21,6 +21,7 @@
/*
* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2013 by Delphix. All rights reserved.
* Copyright (c) 2014, Joyent, Inc. All rights reserved.
*/
#ifndef _SYS_DSL_DIR_H
@@ -38,6 +39,14 @@ extern "C" {
struct dsl_dataset;
/*
* DD_FIELD_* are strings that are used in the "extensified" dsl_dir zap object.
* They should be of the format <reverse-dns>:<field>.
*/
#define DD_FIELD_FILESYSTEM_COUNT "com.joyent:filesystem_count"
#define DD_FIELD_SNAPSHOT_COUNT "com.joyent:snapshot_count"
typedef enum dd_used {
DD_USED_HEAD,
DD_USED_SNAP,
@@ -129,8 +138,13 @@ int dsl_dir_set_quota(const char *ddname, zprop_source_t source,
uint64_t quota);
int dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
uint64_t reservation);
int dsl_dir_activate_fs_ss_limit(const char *);
int dsl_fs_ss_limit_check(dsl_dir_t *, uint64_t, zfs_prop_t, dsl_dir_t *,
cred_t *);
void dsl_fs_ss_count_adjust(dsl_dir_t *, int64_t, const char *, dmu_tx_t *);
int dsl_dir_rename(const char *oldname, const char *newname);
int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t space);
int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd,
uint64_t fs_cnt, uint64_t ss_cnt, uint64_t space, cred_t *);
boolean_t dsl_dir_is_clone(dsl_dir_t *dd);
void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds,
uint64_t reservation, cred_t *cr, dmu_tx_t *tx);
@@ -138,6 +152,8 @@ void dsl_dir_snap_cmtime_update(dsl_dir_t *dd);
timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value,
dmu_tx_t *tx);
void dsl_dir_zapify(dsl_dir_t *dd, dmu_tx_t *tx);
boolean_t dsl_dir_is_zapified(dsl_dir_t *dd);
/* internal reserved dir name */
#define MOS_DIR_NAME "$MOS"