Date: Wed, 8 Nov 2017 09:22:05 +0000 (UTC) From: Andriy Gapon <avg@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r325538 - in stable/11: cddl/contrib/opensolaris/cmd/zfs cddl/contrib/opensolaris/lib/libzfs_core/common sys/cddl/contrib/opensolaris/uts/common/fs/zfs sys/cddl/contrib/opensolaris/uts/... Message-ID: <201711080922.vA89M5Jr075387@repo.freebsd.org>
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Author: avg Date: Wed Nov 8 09:22:04 2017 New Revision: 325538 URL: https://svnweb.freebsd.org/changeset/base/325538 Log: MFC r324197: MFV r323913: 8600 ZFS channel programs - snapshot Modified: stable/11/cddl/contrib/opensolaris/cmd/zfs/zfs-program.8 stable/11/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zcp.h stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_global.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_synctask.c stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Directory Properties: stable/11/ (props changed) Modified: stable/11/cddl/contrib/opensolaris/cmd/zfs/zfs-program.8 ============================================================================== --- stable/11/cddl/contrib/opensolaris/cmd/zfs/zfs-program.8 Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/cddl/contrib/opensolaris/cmd/zfs/zfs-program.8 Wed Nov 8 09:22:04 2017 (r325538) @@ -10,7 +10,7 @@ .\" .\" Copyright (c) 2016, 2017 by Delphix. All rights reserved. .\" -.Dd October 02, 2016 +.Dd October 02, 2017 .Dt ZFS-PROGRAM 1M .Os .Sh NAME @@ -372,6 +372,18 @@ filesystem (string) .Bd -ragged -compact -offset "xxxx" Filesystem to rollback. .Ed +.It Em zfs.sync.snapshot(dataset) +Create a snapshot of a filesystem. +Returns 0 if the snapshot was successfully created, +and a nonzero error code otherwise. +.Pp +Note: Taking a snapshot will fail on any pool older than legacy version 27. +To enable taking snapshots from ZCP scripts, the pool must be upgraded. +.Pp +dataset (string) +.Bd -ragged -compact -offset "xxxx" +Name of snapshot to create. +.Ed .El .It Sy zfs.check submodule For each function in the zfs.sync submodule, there is a corresponding zfs.check @@ -392,6 +404,7 @@ The available zfs.check functions are: .It Em zfs.check.destroy(dataset, [defer=true|false]) .It Em zfs.check.promote(dataset) .It Em zfs.check.rollback(filesystem) +.It Em zfs.check.snapshot(dataset) .El .It Sy zfs.list submodule The zfs.list submodule provides functions for iterating over datasets and Modified: stable/11/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c ============================================================================== --- stable/11/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/cddl/contrib/opensolaris/lib/libzfs_core/common/libzfs_core.c Wed Nov 8 09:22:04 2017 (r325538) @@ -20,7 +20,7 @@ */ /* - * Copyright (c) 2012, 2016 by Delphix. All rights reserved. + * Copyright (c) 2012, 2017 by Delphix. All rights reserved. * Copyright (c) 2013 Steven Hartland. All rights reserved. * Copyright (c) 2014 Integros [integros.com] * Copyright 2017 RackTop Systems. @@ -160,7 +160,12 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name, if (resultp != NULL) { *resultp = NULL; - zc.zc_nvlist_dst_size = MAX(size * 2, 128 * 1024); + if (ioc == ZFS_IOC_CHANNEL_PROGRAM) { + zc.zc_nvlist_dst_size = fnvlist_lookup_uint64(source, + ZCP_ARG_MEMLIMIT); + } else { + zc.zc_nvlist_dst_size = MAX(size * 2, 128 * 1024); + } zc.zc_nvlist_dst = (uint64_t)(uintptr_t) malloc(zc.zc_nvlist_dst_size); #ifdef illumos @@ -178,7 +183,7 @@ lzc_ioctl(zfs_ioc_t ioc, const char *name, * If ioctl exited with ENOMEM, we retry the ioctl after * increasing the size of the destination nvlist. * - * Channel programs that exit with ENOMEM probably ran over the + * Channel programs that exit with ENOMEM ran over the * lua memory sandbox; they should not be retried. */ if (errno == ENOMEM && resultp != NULL && Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/dsl_dataset.c Wed Nov 8 09:22:04 2017 (r325538) @@ -1134,13 +1134,6 @@ dsl_dataset_snapshot_reserve_space(dsl_dataset_t *ds, return (0); } -typedef struct dsl_dataset_snapshot_arg { - nvlist_t *ddsa_snaps; - nvlist_t *ddsa_props; - nvlist_t *ddsa_errors; - cred_t *ddsa_cr; -} dsl_dataset_snapshot_arg_t; - int dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, const char *snapname, dmu_tx_t *tx, boolean_t recv, uint64_t cnt, cred_t *cr) @@ -1200,7 +1193,7 @@ dsl_dataset_snapshot_check_impl(dsl_dataset_t *ds, con return (0); } -static int +int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx) { dsl_dataset_snapshot_arg_t *ddsa = arg; @@ -1477,7 +1470,7 @@ dsl_dataset_snapshot_sync_impl(dsl_dataset_t *ds, cons spa_history_log_internal_ds(ds->ds_prev, "snapshot", tx, ""); } -static void +void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx) { dsl_dataset_snapshot_arg_t *ddsa = arg; Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/dsl_dataset.h Wed Nov 8 09:22:04 2017 (r325538) @@ -244,6 +244,13 @@ typedef struct dsl_dataset_rollback_arg { nvlist_t *ddra_result; } dsl_dataset_rollback_arg_t; +typedef struct dsl_dataset_snapshot_arg { + nvlist_t *ddsa_snaps; + nvlist_t *ddsa_props; + nvlist_t *ddsa_errors; + cred_t *ddsa_cr; +} dsl_dataset_snapshot_arg_t; + /* * The max length of a temporary tag prefix is the number of hex digits * required to express UINT64_MAX plus one for the hyphen. @@ -276,6 +283,8 @@ uint64_t dsl_dataset_create_sync(dsl_dir_t *pds, const dsl_dataset_t *origin, uint64_t flags, cred_t *, dmu_tx_t *); uint64_t dsl_dataset_create_sync_dd(dsl_dir_t *dd, dsl_dataset_t *origin, uint64_t flags, dmu_tx_t *tx); +void dsl_dataset_snapshot_sync(void *arg, dmu_tx_t *tx); +int dsl_dataset_snapshot_check(void *arg, dmu_tx_t *tx); int dsl_dataset_snapshot(nvlist_t *snaps, nvlist_t *props, nvlist_t *errors); void dsl_dataset_promote_sync(void *arg, dmu_tx_t *tx); int dsl_dataset_promote_check(void *arg, dmu_tx_t *tx); Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zcp.h ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zcp.h Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/sys/zcp.h Wed Nov 8 09:22:04 2017 (r325538) @@ -14,7 +14,7 @@ */ /* - * Copyright (c) 2016 by Delphix. All rights reserved. + * Copyright (c) 2016, 2017 by Delphix. All rights reserved. */ #ifndef _SYS_ZCP_H @@ -136,8 +136,6 @@ typedef struct zcp_lib_info { const zcp_arg_t pargs[4]; const zcp_arg_t kwargs[2]; } zcp_lib_info_t; - -int zcp_nvlist_to_lua(lua_State *, nvlist_t *, char *, int); #ifdef __cplusplus } Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp.c Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp.c Wed Nov 8 09:22:04 2017 (r325538) @@ -14,7 +14,7 @@ */ /* - * Copyright (c) 2016 by Delphix. All rights reserved. + * Copyright (c) 2016, 2017 by Delphix. All rights reserved. */ /* @@ -109,10 +109,15 @@ #define ETIME ETIMEDOUT #endif +#define ZCP_NVLIST_MAX_DEPTH 20 + uint64_t zfs_lua_check_instrlimit_interval = 100; uint64_t zfs_lua_max_instrlimit = ZCP_MAX_INSTRLIMIT; uint64_t zfs_lua_max_memlimit = ZCP_MAX_MEMLIMIT; +/* + * Forward declarations for mutually recursive functions + */ static int zcp_nvpair_value_to_lua(lua_State *, nvpair_t *, char *, int); static int zcp_lua_to_nvlist_impl(lua_State *, int, nvlist_t *, const char *, int); @@ -219,8 +224,6 @@ zcp_cleanup(lua_State *state) zcp_clear_cleanup(state); } } - -#define ZCP_NVLIST_MAX_DEPTH 20 /* * Convert the lua table at the given index on the Lua stack to an nvlist Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_global.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_global.c Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_global.c Wed Nov 8 09:22:04 2017 (r325538) @@ -14,7 +14,7 @@ */ /* - * Copyright (c) 2016 by Delphix. All rights reserved. + * Copyright (c) 2016, 2017 by Delphix. All rights reserved. */ #include <sys/zcp_global.h> @@ -62,7 +62,12 @@ static const zcp_errno_global_t errno_globals[] = { {"EPIPE", EPIPE}, {"EDOM", EDOM}, {"ERANGE", ERANGE}, + {"EDEADLK", EDEADLK}, + {"ENOLCK", ENOLCK}, + {"ECANCELED", ECANCELED}, + {"ENOTSUP", ENOTSUP}, {"EDQUOT", EDQUOT}, + {"ENAMETOOLONG", ENAMETOOLONG}, {NULL, 0} }; Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_synctask.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_synctask.c Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zcp_synctask.c Wed Nov 8 09:22:04 2017 (r325538) @@ -39,10 +39,10 @@ typedef int (zcp_synctask_func_t)(lua_State *, boolean typedef struct zcp_synctask_info { const char *name; zcp_synctask_func_t *func; - zfs_space_check_t space_check; - int blocks_modified; const zcp_arg_t pargs[4]; const zcp_arg_t kwargs[2]; + zfs_space_check_t space_check; + int blocks_modified; } zcp_synctask_info_t; /* @@ -91,8 +91,6 @@ static int zcp_synctask_destroy(lua_State *, boolean_t static zcp_synctask_info_t zcp_synctask_destroy_info = { .name = "destroy", .func = zcp_synctask_destroy, - .space_check = ZFS_SPACE_CHECK_NONE, - .blocks_modified = 0, .pargs = { {.za_name = "filesystem | snapshot", .za_lua_type = LUA_TSTRING}, {NULL, 0} @@ -100,7 +98,9 @@ static zcp_synctask_info_t zcp_synctask_destroy_info = .kwargs = { {.za_name = "defer", .za_lua_type = LUA_TBOOLEAN}, {NULL, 0} - } + }, + .space_check = ZFS_SPACE_CHECK_NONE, + .blocks_modified = 0 }; /* ARGSUSED */ @@ -140,19 +140,19 @@ zcp_synctask_destroy(lua_State *state, boolean_t sync, return (err); } -static int zcp_synctask_promote(lua_State *, boolean_t, nvlist_t *err_details); +static int zcp_synctask_promote(lua_State *, boolean_t, nvlist_t *); static zcp_synctask_info_t zcp_synctask_promote_info = { .name = "promote", .func = zcp_synctask_promote, - .space_check = ZFS_SPACE_CHECK_RESERVED, - .blocks_modified = 3, .pargs = { {.za_name = "clone", .za_lua_type = LUA_TSTRING}, {NULL, 0} }, .kwargs = { {NULL, 0} - } + }, + .space_check = ZFS_SPACE_CHECK_RESERVED, + .blocks_modified = 3 }; static int @@ -208,6 +208,58 @@ zcp_synctask_rollback(lua_State *state, boolean_t sync return (err); } +static int zcp_synctask_snapshot(lua_State *, boolean_t, nvlist_t *); +static zcp_synctask_info_t zcp_synctask_snapshot_info = { + .name = "snapshot", + .func = zcp_synctask_snapshot, + .pargs = { + {.za_name = "filesystem@snapname | volume@snapname", + .za_lua_type = LUA_TSTRING}, + {NULL, 0} + }, + .kwargs = { + {NULL, 0} + }, + .space_check = ZFS_SPACE_CHECK_NORMAL, + .blocks_modified = 3 +}; + +/* ARGSUSED */ +static int +zcp_synctask_snapshot(lua_State *state, boolean_t sync, nvlist_t *err_details) +{ + int err; + dsl_dataset_snapshot_arg_t ddsa = { 0 }; + const char *dsname = lua_tostring(state, 1); + zcp_run_info_t *ri = zcp_run_info(state); + + /* + * We only allow for a single snapshot rather than a list, so the + * error list output is unnecessary. + */ + ddsa.ddsa_errors = NULL; + ddsa.ddsa_props = NULL; + ddsa.ddsa_cr = ri->zri_cred; + ddsa.ddsa_snaps = fnvlist_alloc(); + fnvlist_add_boolean(ddsa.ddsa_snaps, dsname); + + /* + * On old pools, the ZIL must not be active when a snapshot is created, + * but we can't suspend the ZIL because we're already in syncing + * context. + */ + if (spa_version(ri->zri_pool->dp_spa) < SPA_VERSION_FAST_SNAP) { + return (ENOTSUP); + } + + err = zcp_sync_task(state, dsl_dataset_snapshot_check, + dsl_dataset_snapshot_sync, &ddsa, sync, dsname); + + fnvlist_free(ddsa.ddsa_snaps); + + return (err); +} + void zcp_synctask_wrapper_cleanup(void *arg) { @@ -279,6 +331,7 @@ zcp_load_synctask_lib(lua_State *state, boolean_t sync &zcp_synctask_destroy_info, &zcp_synctask_promote_info, &zcp_synctask_rollback_info, + &zcp_synctask_snapshot_info, NULL }; Modified: stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c ============================================================================== --- stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Wed Nov 8 09:16:31 2017 (r325537) +++ stable/11/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ioctl.c Wed Nov 8 09:22:04 2017 (r325538) @@ -27,7 +27,7 @@ * Copyright 2015, OmniTI Computer Consulting, Inc. All rights reserved. * Copyright 2015 Nexenta Systems, Inc. All rights reserved. * Copyright (c) 2014, 2016 Joyent, Inc. All rights reserved. - * Copyright (c) 2011, 2016 by Delphix. All rights reserved. + * Copyright (c) 2011, 2017 by Delphix. All rights reserved. * Copyright (c) 2013 by Saso Kiselkov. All rights reserved. * Copyright (c) 2013 Steven Hartland. All rights reserved. * Copyright (c) 2014 Integros [integros.com] @@ -3789,7 +3789,7 @@ zfs_ioc_channel_program(const char *poolname, nvlist_t if (instrlimit == 0 || instrlimit > zfs_lua_max_instrlimit) return (EINVAL); - if (memlimit == 0 || memlimit > ZCP_MAX_MEMLIMIT) + if (memlimit == 0 || memlimit > zfs_lua_max_memlimit) return (EINVAL); return (zcp_eval(poolname, program, instrlimit, memlimit,
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