| /* |
| * CDDL HEADER START |
| * |
| * The contents of this file are subject to the terms of the |
| * Common Development and Distribution License (the "License"). |
| * You may not use this file except in compliance with the License. |
| * |
| * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
| * or http://www.opensolaris.org/os/licensing. |
| * See the License for the specific language governing permissions |
| * and limitations under the License. |
| * |
| * When distributing Covered Code, include this CDDL HEADER in each |
| * file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
| * If applicable, add the following below this CDDL HEADER, with the |
| * fields enclosed by brackets "[]" replaced with your own identifying |
| * information: Portions Copyright [yyyy] [name of copyright owner] |
| * |
| * CDDL HEADER END |
| */ |
| /* |
| * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
| * Copyright (c) 2016 by Delphix. All rights reserved. |
| * Copyright 2017 Jason King |
| * Copyright (c) 2017, Intel Corporation. |
| */ |
| |
| #include <assert.h> |
| #include <sys/zfs_context.h> |
| #include <sys/avl.h> |
| #include <string.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/spa.h> |
| #include <sys/fs/zfs.h> |
| #include <sys/refcount.h> |
| #include <sys/zfs_ioctl.h> |
| #include <dlfcn.h> |
| #include <libzutil.h> |
| |
| /* |
| * Routines needed by more than one client of libzpool. |
| */ |
| |
| static void |
| show_vdev_stats(const char *desc, const char *ctype, nvlist_t *nv, int indent) |
| { |
| vdev_stat_t *vs; |
| vdev_stat_t *v0 = { 0 }; |
| uint64_t sec; |
| uint64_t is_log = 0; |
| nvlist_t **child; |
| uint_t c, children; |
| char used[6], avail[6]; |
| char rops[6], wops[6], rbytes[6], wbytes[6], rerr[6], werr[6], cerr[6]; |
| |
| v0 = umem_zalloc(sizeof (*v0), UMEM_NOFAIL); |
| |
| if (indent == 0 && desc != NULL) { |
| (void) printf(" " |
| " capacity operations bandwidth ---- errors ----\n"); |
| (void) printf("description " |
| "used avail read write read write read write cksum\n"); |
| } |
| |
| if (desc != NULL) { |
| char *suffix = "", *bias = NULL; |
| char bias_suffix[32]; |
| |
| (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); |
| (void) nvlist_lookup_string(nv, ZPOOL_CONFIG_ALLOCATION_BIAS, |
| &bias); |
| if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_VDEV_STATS, |
| (uint64_t **)&vs, &c) != 0) |
| vs = v0; |
| |
| if (bias != NULL) { |
| (void) snprintf(bias_suffix, sizeof (bias_suffix), |
| " (%s)", bias); |
| suffix = bias_suffix; |
| } else if (is_log) { |
| suffix = " (log)"; |
| } |
| |
| sec = MAX(1, vs->vs_timestamp / NANOSEC); |
| |
| nicenum(vs->vs_alloc, used, sizeof (used)); |
| nicenum(vs->vs_space - vs->vs_alloc, avail, sizeof (avail)); |
| nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops, sizeof (rops)); |
| nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops, sizeof (wops)); |
| nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes, |
| sizeof (rbytes)); |
| nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes, |
| sizeof (wbytes)); |
| nicenum(vs->vs_read_errors, rerr, sizeof (rerr)); |
| nicenum(vs->vs_write_errors, werr, sizeof (werr)); |
| nicenum(vs->vs_checksum_errors, cerr, sizeof (cerr)); |
| |
| (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", |
| indent, "", |
| desc, |
| (int)(indent+strlen(desc)-25-(vs->vs_space ? 0 : 12)), |
| suffix, |
| vs->vs_space ? 6 : 0, vs->vs_space ? used : "", |
| vs->vs_space ? 6 : 0, vs->vs_space ? avail : "", |
| rops, wops, rbytes, wbytes, rerr, werr, cerr); |
| } |
| umem_free(v0, sizeof (*v0)); |
| |
| if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) |
| return; |
| |
| for (c = 0; c < children; c++) { |
| nvlist_t *cnv = child[c]; |
| char *cname = NULL, *tname; |
| uint64_t np; |
| int len; |
| if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && |
| nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) |
| cname = "<unknown>"; |
| len = strlen(cname) + 2; |
| tname = umem_zalloc(len, UMEM_NOFAIL); |
| (void) strlcpy(tname, cname, len); |
| if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) |
| tname[strlen(tname)] = '0' + np; |
| show_vdev_stats(tname, ctype, cnv, indent + 2); |
| umem_free(tname, len); |
| } |
| } |
| |
| void |
| show_pool_stats(spa_t *spa) |
| { |
| nvlist_t *config, *nvroot; |
| char *name; |
| |
| VERIFY(spa_get_stats(spa_name(spa), &config, NULL, 0) == 0); |
| |
| VERIFY(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, |
| &nvroot) == 0); |
| VERIFY(nvlist_lookup_string(config, ZPOOL_CONFIG_POOL_NAME, |
| &name) == 0); |
| |
| show_vdev_stats(name, ZPOOL_CONFIG_CHILDREN, nvroot, 0); |
| show_vdev_stats(NULL, ZPOOL_CONFIG_L2CACHE, nvroot, 0); |
| show_vdev_stats(NULL, ZPOOL_CONFIG_SPARES, nvroot, 0); |
| |
| nvlist_free(config); |
| } |
| |
| /* |
| * Sets given global variable in libzpool to given unsigned 32-bit value. |
| * arg: "<variable>=<value>" |
| */ |
| int |
| set_global_var(char *arg) |
| { |
| void *zpoolhdl; |
| char *varname = arg, *varval; |
| u_longlong_t val; |
| |
| #ifndef _LITTLE_ENDIAN |
| /* |
| * On big endian systems changing a 64-bit variable would set the high |
| * 32 bits instead of the low 32 bits, which could cause unexpected |
| * results. |
| */ |
| fprintf(stderr, "Setting global variables is only supported on " |
| "little-endian systems\n"); |
| return (ENOTSUP); |
| #endif |
| if (arg != NULL && (varval = strchr(arg, '=')) != NULL) { |
| *varval = '\0'; |
| varval++; |
| val = strtoull(varval, NULL, 0); |
| if (val > UINT32_MAX) { |
| fprintf(stderr, "Value for global variable '%s' must " |
| "be a 32-bit unsigned integer\n", varname); |
| return (EOVERFLOW); |
| } |
| } else { |
| return (EINVAL); |
| } |
| |
| zpoolhdl = dlopen("libzpool.so", RTLD_LAZY); |
| if (zpoolhdl != NULL) { |
| uint32_t *var; |
| var = dlsym(zpoolhdl, varname); |
| if (var == NULL) { |
| fprintf(stderr, "Global variable '%s' does not exist " |
| "in libzpool.so\n", varname); |
| return (EINVAL); |
| } |
| *var = (uint32_t)val; |
| |
| dlclose(zpoolhdl); |
| } else { |
| fprintf(stderr, "Failed to open libzpool.so to set global " |
| "variable\n"); |
| return (EIO); |
| } |
| |
| return (0); |
| } |
| |
| static nvlist_t * |
| refresh_config(void *unused, nvlist_t *tryconfig) |
| { |
| return (spa_tryimport(tryconfig)); |
| } |
| |
| static int |
| pool_active(void *unused, const char *name, uint64_t guid, |
| boolean_t *isactive) |
| { |
| zfs_cmd_t *zcp; |
| nvlist_t *innvl; |
| char *packed = NULL; |
| size_t size = 0; |
| int fd, ret; |
| |
| /* |
| * Use ZFS_IOC_POOL_SYNC to confirm if a pool is active |
| */ |
| |
| fd = open(ZFS_DEV, O_RDWR); |
| if (fd < 0) |
| return (-1); |
| |
| zcp = umem_zalloc(sizeof (zfs_cmd_t), UMEM_NOFAIL); |
| |
| innvl = fnvlist_alloc(); |
| fnvlist_add_boolean_value(innvl, "force", B_FALSE); |
| |
| (void) strlcpy(zcp->zc_name, name, sizeof (zcp->zc_name)); |
| packed = fnvlist_pack(innvl, &size); |
| zcp->zc_nvlist_src = (uint64_t)(uintptr_t)packed; |
| zcp->zc_nvlist_src_size = size; |
| |
| ret = ioctl(fd, ZFS_IOC_POOL_SYNC, zcp); |
| |
| fnvlist_pack_free(packed, size); |
| free((void *)(uintptr_t)zcp->zc_nvlist_dst); |
| nvlist_free(innvl); |
| umem_free(zcp, sizeof (zfs_cmd_t)); |
| |
| (void) close(fd); |
| |
| *isactive = (ret == 0); |
| |
| return (0); |
| } |
| |
| const pool_config_ops_t libzpool_config_ops = { |
| .pco_refresh_config = refresh_config, |
| .pco_pool_active = pool_active, |
| }; |