diff options
| author | Steven Hartland <smh@freebsd.org> | 2013-06-11 22:01:53 -0800 |
|---|---|---|
| committer | Christopher Siden <chris.siden@delphix.com> | 2013-06-11 23:01:53 -0700 |
| commit | a7a845e4bf22fd1b2a284729ccd95c7370a0438c (patch) | |
| tree | 761a7618b306660db2217226a0c2e5e6485f9786 /usr/src/uts/common/fs/zfs/dsl_pool.c | |
| parent | 3cb69f734bc60bbb4d56a28c83706db862bec082 (diff) | |
| download | illumos-joyent-a7a845e4bf22fd1b2a284729ccd95c7370a0438c.tar.gz | |
3740 Poor ZFS send / receive performance due to snapshot hold / release processing
Reviewed by: Matthew Ahrens <mahrens@delphix.com>
Approved by: Christopher Siden <christopher.siden@delphix.com>
Diffstat (limited to 'usr/src/uts/common/fs/zfs/dsl_pool.c')
| -rw-r--r-- | usr/src/uts/common/fs/zfs/dsl_pool.c | 18 |
1 files changed, 15 insertions, 3 deletions
diff --git a/usr/src/uts/common/fs/zfs/dsl_pool.c b/usr/src/uts/common/fs/zfs/dsl_pool.c index c72f13c271..af5ffb8c88 100644 --- a/usr/src/uts/common/fs/zfs/dsl_pool.c +++ b/usr/src/uts/common/fs/zfs/dsl_pool.c @@ -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) 2013 Steven Hartland. All rights reserved. */ #include <sys/dsl_pool.h> @@ -836,23 +837,34 @@ dsl_pool_clean_tmp_userrefs(dsl_pool_t *dp) zap_cursor_t zc; objset_t *mos = dp->dp_meta_objset; uint64_t zapobj = dp->dp_tmp_userrefs_obj; + nvlist_t *holds; if (zapobj == 0) return; ASSERT(spa_version(dp->dp_spa) >= SPA_VERSION_USERREFS); + holds = fnvlist_alloc(); + for (zap_cursor_init(&zc, mos, zapobj); zap_cursor_retrieve(&zc, &za) == 0; zap_cursor_advance(&zc)) { char *htag; - uint64_t dsobj; + nvlist_t *tags; htag = strchr(za.za_name, '-'); *htag = '\0'; ++htag; - dsobj = strtonum(za.za_name, NULL); - dsl_dataset_user_release_tmp(dp, dsobj, htag); + if (nvlist_lookup_nvlist(holds, za.za_name, &tags) != 0) { + tags = fnvlist_alloc(); + fnvlist_add_boolean(tags, htag); + fnvlist_add_nvlist(holds, za.za_name, tags); + fnvlist_free(tags); + } else { + fnvlist_add_boolean(tags, htag); + } } + dsl_dataset_user_release_tmp(dp, holds); + fnvlist_free(holds); zap_cursor_fini(&zc); } |