From 8a393be353c3bfffbfbe0f4d2bc57210b658dcde Mon Sep 17 00:00:00 2001 From: Pavel Zakharov Date: Fri, 10 Feb 2017 17:51:09 -0500 Subject: [PATCH] OpenZFS 9235 - rename zpool_rewind_policy_t to zpool_load_policy_t We want to be able to pass various settings during import/open of a pool, which are not only related to rewind. Instead of adding a new policy and duplicate a bunch of code, we should just rename rewind_policy to a more generic term like load_policy. For instance, we'd like to set spa->spa_import_flags from the nvlist, rather from a flags parameter passed to spa_import as in some cases we want those flags not only for the import case, but also for the open case. One such flag could be ZFS_IMPORT_MISSING_LOG (as used in zdb) which would allow zfs to open a pool when logs are missing. Authored by: Pavel Zakharov Reviewed by: Matt Ahrens Reviewed by: George Wilson Approved by: Robert Mustacchi Ported-by: Brian Behlendorf OpenZFS-issue: https://illumos.org/issues/9235 OpenZFS-commit: https://github.com/openzfs/openzfs/commit/d2b1e44 Closes #7532 --- cmd/zdb/zdb.c | 6 ++-- cmd/zpool/zpool_main.c | 11 +++++--- include/libzfs.h | 2 +- include/sys/fs/zfs.h | 26 ++++++++--------- include/zfs_comutil.h | 4 +-- lib/libzfs/libzfs_import.c | 2 +- lib/libzfs/libzfs_pool.c | 22 +++++++-------- module/zcommon/zfs_comutil.c | 42 ++++++++++++++-------------- module/zfs/spa.c | 54 +++++++++++++++++------------------- 9 files changed, 85 insertions(+), 84 deletions(-) diff --git a/cmd/zdb/zdb.c b/cmd/zdb/zdb.c index 5b50c4b39..faac43c79 100644 --- a/cmd/zdb/zdb.c +++ b/cmd/zdb/zdb.c @@ -5074,8 +5074,8 @@ main(int argc, char **argv) (dump_opt['X'] ? ZPOOL_EXTREME_REWIND : 0); if (nvlist_alloc(&policy, NV_UNIQUE_NAME_TYPE, 0) != 0 || - nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, max_txg) != 0 || - nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind) != 0) + nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, max_txg) != 0 || + nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY, rewind) != 0) fatal("internal error: %s", strerror(ENOMEM)); error = 0; @@ -5108,7 +5108,7 @@ main(int argc, char **argv) if (error == 0) { if (nvlist_add_nvlist(cfg, - ZPOOL_REWIND_POLICY, policy) != 0) { + ZPOOL_LOAD_POLICY, policy) != 0) { fatal("can't open '%s': %s", target, strerror(ENOMEM)); } diff --git a/cmd/zpool/zpool_main.c b/cmd/zpool/zpool_main.c index d44589303..39f379cb0 100644 --- a/cmd/zpool/zpool_main.c +++ b/cmd/zpool/zpool_main.c @@ -2667,8 +2667,9 @@ zpool_do_import(int argc, char **argv) /* In the future, we can capture further policy and include it here */ if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 || - nvlist_add_uint64(policy, ZPOOL_REWIND_REQUEST_TXG, txg) != 0 || - nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0) + nvlist_add_uint64(policy, ZPOOL_LOAD_REQUEST_TXG, txg) != 0 || + nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY, + rewind_policy) != 0) goto error; /* check argument count */ @@ -2819,7 +2820,7 @@ zpool_do_import(int argc, char **argv) if (do_destroyed && pool_state != POOL_STATE_DESTROYED) continue; - verify(nvlist_add_nvlist(config, ZPOOL_REWIND_POLICY, + verify(nvlist_add_nvlist(config, ZPOOL_LOAD_POLICY, policy) == 0); if (argc == 0) { @@ -5878,8 +5879,10 @@ zpool_do_clear(int argc, char **argv) /* In future, further rewind policy choices can be passed along here */ if (nvlist_alloc(&policy, NV_UNIQUE_NAME, 0) != 0 || - nvlist_add_uint32(policy, ZPOOL_REWIND_REQUEST, rewind_policy) != 0) + nvlist_add_uint32(policy, ZPOOL_LOAD_REWIND_POLICY, + rewind_policy) != 0) { return (1); + } pool = argv[0]; device = argc == 2 ? argv[1] : NULL; diff --git a/include/libzfs.h b/include/libzfs.h index 45eb5c904..7ea6d7fa0 100644 --- a/include/libzfs.h +++ b/include/libzfs.h @@ -413,7 +413,7 @@ typedef struct importargs { int unique : 1; /* does 'poolname' already exist? */ int exists : 1; /* set on return if pool already exists */ int scan : 1; /* prefer scanning to libblkid cache */ - nvlist_t *policy; /* rewind policy (rewind txg, etc.) */ + nvlist_t *policy; /* load policy (max txg, rewind, etc.) */ } importargs_t; extern nvlist_t *zpool_search_import(libzfs_handle_t *, importargs_t *); diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h index fa4eb2721..870618ecb 100644 --- a/include/sys/fs/zfs.h +++ b/include/sys/fs/zfs.h @@ -570,7 +570,7 @@ typedef enum zfs_key_location { #define ZPL_VERSION_USERSPACE ZPL_VERSION_4 #define ZPL_VERSION_SA ZPL_VERSION_5 -/* Rewind request information */ +/* Rewind policy information */ #define ZPOOL_NO_REWIND 1 /* No policy - default behavior */ #define ZPOOL_NEVER_REWIND 2 /* Do not search for best txg or rewind */ #define ZPOOL_TRY_REWIND 4 /* Search for best txg, but do not rewind */ @@ -579,12 +579,12 @@ typedef enum zfs_key_location { #define ZPOOL_REWIND_MASK 28 /* All the possible rewind bits */ #define ZPOOL_REWIND_POLICIES 31 /* All the possible policy bits */ -typedef struct zpool_rewind_policy { - uint32_t zrp_request; /* rewind behavior requested */ - uint64_t zrp_maxmeta; /* max acceptable meta-data errors */ - uint64_t zrp_maxdata; /* max acceptable data errors */ - uint64_t zrp_txg; /* specific txg to load */ -} zpool_rewind_policy_t; +typedef struct zpool_load_policy { + uint32_t zlp_rewind; /* rewind policy requested */ + uint64_t zlp_maxmeta; /* max acceptable meta-data errors */ + uint64_t zlp_maxdata; /* max acceptable data errors */ + uint64_t zlp_txg; /* specific txg to load */ +} zpool_load_policy_t; /* * The following are configuration names used in the nvlist describing a pool's @@ -722,12 +722,12 @@ typedef struct zpool_rewind_policy { #define ZPOOL_CONFIG_FRU "fru" #define ZPOOL_CONFIG_AUX_STATE "aux_state" -/* Rewind policy parameters */ -#define ZPOOL_REWIND_POLICY "rewind-policy" -#define ZPOOL_REWIND_REQUEST "rewind-request" -#define ZPOOL_REWIND_REQUEST_TXG "rewind-request-txg" -#define ZPOOL_REWIND_META_THRESH "rewind-meta-thresh" -#define ZPOOL_REWIND_DATA_THRESH "rewind-data-thresh" +/* Pool load policy parameters */ +#define ZPOOL_LOAD_POLICY "load-policy" +#define ZPOOL_LOAD_REWIND_POLICY "load-rewind-policy" +#define ZPOOL_LOAD_REQUEST_TXG "load-request-txg" +#define ZPOOL_LOAD_META_THRESH "load-meta-thresh" +#define ZPOOL_LOAD_DATA_THRESH "load-data-thresh" /* Rewind data discovered */ #define ZPOOL_CONFIG_LOAD_TIME "rewind_txg_ts" diff --git a/include/zfs_comutil.h b/include/zfs_comutil.h index f89054388..8cc098ada 100644 --- a/include/zfs_comutil.h +++ b/include/zfs_comutil.h @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2012, 2017 by Delphix. All rights reserved. */ #ifndef _ZFS_COMUTIL_H @@ -34,7 +34,7 @@ extern "C" { #endif extern boolean_t zfs_allocatable_devs(nvlist_t *); -extern void zpool_get_rewind_policy(nvlist_t *, zpool_rewind_policy_t *); +extern void zpool_get_load_policy(nvlist_t *, zpool_load_policy_t *); extern int zfs_zpl_version_map(int spa_version); extern int zfs_spa_version_map(int zpl_version); diff --git a/lib/libzfs/libzfs_import.c b/lib/libzfs/libzfs_import.c index 68b5988cd..7d2f0e903 100644 --- a/lib/libzfs/libzfs_import.c +++ b/lib/libzfs/libzfs_import.c @@ -1232,7 +1232,7 @@ get_configs(libzfs_handle_t *hdl, pool_list_t *pl, boolean_t active_ok, } if (policy != NULL) { - if (nvlist_add_nvlist(config, ZPOOL_REWIND_POLICY, + if (nvlist_add_nvlist(config, ZPOOL_LOAD_POLICY, policy) != 0) goto nomem; } diff --git a/lib/libzfs/libzfs_pool.c b/lib/libzfs/libzfs_pool.c index 935b42993..3b16c012f 100644 --- a/lib/libzfs/libzfs_pool.c +++ b/lib/libzfs/libzfs_pool.c @@ -1746,7 +1746,7 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, nvlist_t *props, int flags) { zfs_cmd_t zc = {"\0"}; - zpool_rewind_policy_t policy; + zpool_load_policy_t policy; nvlist_t *nv = NULL; nvlist_t *nvinfo = NULL; nvlist_t *missing = NULL; @@ -1818,7 +1818,7 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, zcmd_free_nvlists(&zc); - zpool_get_rewind_policy(config, &policy); + zpool_get_load_policy(config, &policy); if (error) { char desc[1024]; @@ -1828,7 +1828,7 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, * Dry-run failed, but we print out what success * looks like if we found a best txg */ - if (policy.zrp_request & ZPOOL_TRY_REWIND) { + if (policy.zlp_rewind & ZPOOL_TRY_REWIND) { zpool_rewind_exclaim(hdl, newname ? origname : thename, B_TRUE, nv); nvlist_free(nv); @@ -1968,10 +1968,10 @@ zpool_import_props(libzfs_handle_t *hdl, nvlist_t *config, const char *newname, ret = -1; else if (zhp != NULL) zpool_close(zhp); - if (policy.zrp_request & + if (policy.zlp_rewind & (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { zpool_rewind_exclaim(hdl, newname ? origname : thename, - ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), nv); + ((policy.zlp_rewind & ZPOOL_TRY_REWIND) != 0), nv); } nvlist_free(nv); return (0); @@ -3341,7 +3341,7 @@ zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) zfs_cmd_t zc = {"\0"}; char msg[1024]; nvlist_t *tgt; - zpool_rewind_policy_t policy; + zpool_load_policy_t policy; boolean_t avail_spare, l2cache; libzfs_handle_t *hdl = zhp->zpool_hdl; nvlist_t *nvi = NULL; @@ -3373,8 +3373,8 @@ zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) &zc.zc_guid) == 0); } - zpool_get_rewind_policy(rewindnvl, &policy); - zc.zc_cookie = policy.zrp_request; + zpool_get_load_policy(rewindnvl, &policy); + zc.zc_cookie = policy.zlp_rewind; if (zcmd_alloc_dst_nvlist(hdl, &zc, zhp->zpool_config_size * 2) != 0) return (-1); @@ -3390,13 +3390,13 @@ zpool_clear(zpool_handle_t *zhp, const char *path, nvlist_t *rewindnvl) } } - if (!error || ((policy.zrp_request & ZPOOL_TRY_REWIND) && + if (!error || ((policy.zlp_rewind & ZPOOL_TRY_REWIND) && errno != EPERM && errno != EACCES)) { - if (policy.zrp_request & + if (policy.zlp_rewind & (ZPOOL_DO_REWIND | ZPOOL_TRY_REWIND)) { (void) zcmd_read_dst_nvlist(hdl, &zc, &nvi); zpool_rewind_exclaim(hdl, zc.zc_name, - ((policy.zrp_request & ZPOOL_TRY_REWIND) != 0), + ((policy.zlp_rewind & ZPOOL_TRY_REWIND) != 0), nvi); nvlist_free(nvi); } diff --git a/module/zcommon/zfs_comutil.c b/module/zcommon/zfs_comutil.c index b31e0ab27..1f74095cc 100644 --- a/module/zcommon/zfs_comutil.c +++ b/module/zcommon/zfs_comutil.c @@ -20,7 +20,7 @@ */ /* * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved. - * Copyright (c) 2012 by Delphix. All rights reserved. + * Copyright (c) 2012, 2017 by Delphix. All rights reserved. */ /* @@ -65,17 +65,17 @@ zfs_allocatable_devs(nvlist_t *nv) } void -zpool_get_rewind_policy(nvlist_t *nvl, zpool_rewind_policy_t *zrpp) +zpool_get_load_policy(nvlist_t *nvl, zpool_load_policy_t *zlpp) { nvlist_t *policy; nvpair_t *elem; char *nm; /* Defaults */ - zrpp->zrp_request = ZPOOL_NO_REWIND; - zrpp->zrp_maxmeta = 0; - zrpp->zrp_maxdata = UINT64_MAX; - zrpp->zrp_txg = UINT64_MAX; + zlpp->zlp_rewind = ZPOOL_NO_REWIND; + zlpp->zlp_maxmeta = 0; + zlpp->zlp_maxdata = UINT64_MAX; + zlpp->zlp_txg = UINT64_MAX; if (nvl == NULL) return; @@ -83,24 +83,24 @@ zpool_get_rewind_policy(nvlist_t *nvl, zpool_rewind_policy_t *zrpp) elem = NULL; while ((elem = nvlist_next_nvpair(nvl, elem)) != NULL) { nm = nvpair_name(elem); - if (strcmp(nm, ZPOOL_REWIND_POLICY) == 0) { + if (strcmp(nm, ZPOOL_LOAD_POLICY) == 0) { if (nvpair_value_nvlist(elem, &policy) == 0) - zpool_get_rewind_policy(policy, zrpp); + zpool_get_load_policy(policy, zlpp); return; - } else if (strcmp(nm, ZPOOL_REWIND_REQUEST) == 0) { - if (nvpair_value_uint32(elem, &zrpp->zrp_request) == 0) - if (zrpp->zrp_request & ~ZPOOL_REWIND_POLICIES) - zrpp->zrp_request = ZPOOL_NO_REWIND; - } else if (strcmp(nm, ZPOOL_REWIND_REQUEST_TXG) == 0) { - (void) nvpair_value_uint64(elem, &zrpp->zrp_txg); - } else if (strcmp(nm, ZPOOL_REWIND_META_THRESH) == 0) { - (void) nvpair_value_uint64(elem, &zrpp->zrp_maxmeta); - } else if (strcmp(nm, ZPOOL_REWIND_DATA_THRESH) == 0) { - (void) nvpair_value_uint64(elem, &zrpp->zrp_maxdata); + } else if (strcmp(nm, ZPOOL_LOAD_REWIND_POLICY) == 0) { + if (nvpair_value_uint32(elem, &zlpp->zlp_rewind) == 0) + if (zlpp->zlp_rewind & ~ZPOOL_REWIND_POLICIES) + zlpp->zlp_rewind = ZPOOL_NO_REWIND; + } else if (strcmp(nm, ZPOOL_LOAD_REQUEST_TXG) == 0) { + (void) nvpair_value_uint64(elem, &zlpp->zlp_txg); + } else if (strcmp(nm, ZPOOL_LOAD_META_THRESH) == 0) { + (void) nvpair_value_uint64(elem, &zlpp->zlp_maxmeta); + } else if (strcmp(nm, ZPOOL_LOAD_DATA_THRESH) == 0) { + (void) nvpair_value_uint64(elem, &zlpp->zlp_maxdata); } } - if (zrpp->zrp_request == 0) - zrpp->zrp_request = ZPOOL_NO_REWIND; + if (zlpp->zlp_rewind == 0) + zlpp->zlp_rewind = ZPOOL_NO_REWIND; } typedef struct zfs_version_spa_map { @@ -206,7 +206,7 @@ const char *zfs_history_event_names[ZFS_NUM_LEGACY_HISTORY_EVENTS] = { #if defined(_KERNEL) EXPORT_SYMBOL(zfs_allocatable_devs); -EXPORT_SYMBOL(zpool_get_rewind_policy); +EXPORT_SYMBOL(zpool_get_load_policy); EXPORT_SYMBOL(zfs_zpl_version_map); EXPORT_SYMBOL(zfs_spa_version_map); EXPORT_SYMBOL(zfs_history_event_names); diff --git a/module/zfs/spa.c b/module/zfs/spa.c index 50862adcd..45cb6eb00 100644 --- a/module/zfs/spa.c +++ b/module/zfs/spa.c @@ -2093,13 +2093,13 @@ spa_load_verify(spa_t *spa) { zio_t *rio; spa_load_error_t sle = { 0 }; - zpool_rewind_policy_t policy; + zpool_load_policy_t policy; boolean_t verify_ok = B_FALSE; int error = 0; - zpool_get_rewind_policy(spa->spa_config, &policy); + zpool_get_load_policy(spa->spa_config, &policy); - if (policy.zrp_request & ZPOOL_NEVER_REWIND) + if (policy.zlp_rewind & ZPOOL_NEVER_REWIND) return (0); dsl_pool_config_enter(spa->spa_dsl_pool, FTAG); @@ -2138,8 +2138,8 @@ spa_load_verify(spa_t *spa) } if (spa_load_verify_dryrun || - (!error && sle.sle_meta_count <= policy.zrp_maxmeta && - sle.sle_data_count <= policy.zrp_maxdata)) { + (!error && sle.sle_meta_count <= policy.zlp_maxmeta && + sle.sle_data_count <= policy.zlp_maxdata)) { int64_t loss = 0; verify_ok = B_TRUE; @@ -3020,17 +3020,17 @@ spa_ld_load_trusted_config(spa_t *spa, spa_import_type_t type, /* * We will use spa_config if we decide to reload the spa or if spa_load * fails and we rewind. We must thus regenerate the config using the - * MOS information with the updated paths. Rewind policy is an import - * setting and is not in the MOS. We copy it over to our new, trusted - * config. + * MOS information with the updated paths. ZPOOL_LOAD_POLICY is used to + * pass settings on how to load the pool and is not stored in the MOS. + * We copy it over to our new, trusted config. */ mos_config_txg = fnvlist_lookup_uint64(mos_config, ZPOOL_CONFIG_POOL_TXG); nvlist_free(mos_config); mos_config = spa_config_generate(spa, NULL, mos_config_txg, B_FALSE); - if (nvlist_lookup_nvlist(spa->spa_config, ZPOOL_REWIND_POLICY, + if (nvlist_lookup_nvlist(spa->spa_config, ZPOOL_LOAD_POLICY, &policy) == 0) - fnvlist_add_nvlist(mos_config, ZPOOL_REWIND_POLICY, policy); + fnvlist_add_nvlist(mos_config, ZPOOL_LOAD_POLICY, policy); spa_config_set(spa, mos_config); spa->spa_config_source = SPA_CONFIG_SRC_MOS; @@ -4082,13 +4082,13 @@ spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, } if (spa->spa_state == POOL_STATE_UNINITIALIZED) { - zpool_rewind_policy_t policy; + zpool_load_policy_t policy; firstopen = B_TRUE; - zpool_get_rewind_policy(nvpolicy ? nvpolicy : spa->spa_config, + zpool_get_load_policy(nvpolicy ? nvpolicy : spa->spa_config, &policy); - if (policy.zrp_request & ZPOOL_DO_REWIND) + if (policy.zlp_rewind & ZPOOL_DO_REWIND) state = SPA_LOAD_RECOVER; spa_activate(spa, spa_mode_global); @@ -4098,8 +4098,8 @@ spa_open_common(const char *pool, spa_t **spapp, void *tag, nvlist_t *nvpolicy, spa->spa_config_source = SPA_CONFIG_SRC_CACHEFILE; zfs_dbgmsg("spa_open_common: opening %s", pool); - error = spa_load_best(spa, state, policy.zrp_txg, - policy.zrp_request); + error = spa_load_best(spa, state, policy.zlp_txg, + policy.zlp_rewind); if (error == EBADF) { /* @@ -4960,7 +4960,7 @@ spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) spa_t *spa; char *altroot = NULL; spa_load_state_t state = SPA_LOAD_IMPORT; - zpool_rewind_policy_t policy; + zpool_load_policy_t policy; uint64_t mode = spa_mode_global; uint64_t readonly = B_FALSE; int error; @@ -5011,8 +5011,8 @@ spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) */ spa_async_suspend(spa); - zpool_get_rewind_policy(config, &policy); - if (policy.zrp_request & ZPOOL_DO_REWIND) + zpool_get_load_policy(config, &policy); + if (policy.zlp_rewind & ZPOOL_DO_REWIND) state = SPA_LOAD_RECOVER; spa->spa_config_source = SPA_CONFIG_SRC_TRYIMPORT; @@ -5022,9 +5022,9 @@ spa_import(char *pool, nvlist_t *config, nvlist_t *props, uint64_t flags) zfs_dbgmsg("spa_import: importing %s", pool); } else { zfs_dbgmsg("spa_import: importing %s, max_txg=%lld " - "(RECOVERY MODE)", pool, (longlong_t)policy.zrp_txg); + "(RECOVERY MODE)", pool, (longlong_t)policy.zlp_txg); } - error = spa_load_best(spa, state, policy.zrp_txg, policy.zrp_request); + error = spa_load_best(spa, state, policy.zlp_txg, policy.zlp_rewind); /* * Propagate anything learned while loading the pool and pass it @@ -5142,7 +5142,7 @@ spa_tryimport(nvlist_t *tryconfig) spa_t *spa; uint64_t state; int error; - zpool_rewind_policy_t policy; + zpool_load_policy_t policy; if (nvlist_lookup_string(tryconfig, ZPOOL_CONFIG_POOL_NAME, &poolname)) return (NULL); @@ -5158,16 +5158,14 @@ spa_tryimport(nvlist_t *tryconfig) spa_activate(spa, FREAD); /* - * Rewind pool if a max txg was provided. Note that even though we - * retrieve the complete rewind policy, only the rewind txg is relevant - * for tryimport. + * Rewind pool if a max txg was provided. */ - zpool_get_rewind_policy(spa->spa_config, &policy); - if (policy.zrp_txg != UINT64_MAX) { - spa->spa_load_max_txg = policy.zrp_txg; + zpool_get_load_policy(spa->spa_config, &policy); + if (policy.zlp_txg != UINT64_MAX) { + spa->spa_load_max_txg = policy.zlp_txg; spa->spa_extreme_rewind = B_TRUE; zfs_dbgmsg("spa_tryimport: importing %s, max_txg=%lld", - poolname, (longlong_t)policy.zrp_txg); + poolname, (longlong_t)policy.zlp_txg); } else { zfs_dbgmsg("spa_tryimport: importing %s", poolname); } -- 2.39.2