Author: mav
Date: Mon Oct 12 14:24:11 2015
New Revision: 289187
URL: https://svnweb.freebsd.org/changeset/base/289187
Log:
6251 add tunable to disable free_bpobj processing
Reviewed by: Matthew Ahrens <mahr...@delphix.com>
Reviewed by: Prakash Surya <prakash.su...@delphix.com>
Reviewed by: Simon Klinkert <simon.klink...@gmail.com>
Reviewed by: Richard Elling <richard.ell...@richardelling.com>
Reviewed by: Albert Lee <tr...@omniti.com>
Reviewed by: Xin Li <delp...@freebsd.org>
Approved by: Garrett D'Amore <garr...@damore.org>
Author: George Wilson <george.wil...@delphix.com>
illumos/illumos-gate@139510fb6efa97dbe5f5479594b308d940cab8d1
Modified:
vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_scan.c
Modified: vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_scan.c
==============================================================================
--- vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_scan.c Mon Oct 12
14:23:10 2015 (r289186)
+++ vendor-sys/illumos/dist/uts/common/fs/zfs/dsl_scan.c Mon Oct 12
14:24:11 2015 (r289187)
@@ -20,7 +20,7 @@
*/
/*
* Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
- * Copyright (c) 2011, 2014 by Delphix. All rights reserved.
+ * Copyright (c) 2011, 2015 by Delphix. All rights reserved.
*/
#include <sys/dsl_scan.h>
@@ -78,6 +78,11 @@ uint64_t zfs_free_max_blocks = UINT64_MA
extern int zfs_txg_timeout;
+/*
+ * Enable/disable the processing of the free_bpobj object.
+ */
+boolean_t zfs_free_bpobj_enabled = B_TRUE;
+
/* the order has to match pool_scan_type */
static scan_cb_t *scan_funcs[POOL_SCAN_FUNCS] = {
NULL,
@@ -1426,7 +1431,8 @@ dsl_scan_sync(dsl_pool_t *dp, dmu_tx_t *
* have to worry about traversing it. It is also faster to free the
* blocks than to scrub them.
*/
- if (spa_version(dp->dp_spa) >= SPA_VERSION_DEADLISTS) {
+ if (zfs_free_bpobj_enabled &&
+ spa_version(dp->dp_spa) >= SPA_VERSION_DEADLISTS) {
scn->scn_is_bptree = B_FALSE;
scn->scn_zio_root = zio_root(dp->dp_spa, NULL,
NULL, ZIO_FLAG_MUSTSUCCEED);
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