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