diff options
Diffstat (limited to 'lib/libzpool/util.c')
| -rw-r--r-- | lib/libzpool/util.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/lib/libzpool/util.c b/lib/libzpool/util.c new file mode 100644 index 000000000..781edb6e8 --- /dev/null +++ b/lib/libzpool/util.c @@ -0,0 +1,156 @@ +/* + * 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 2008 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +#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> + +/* + * Routines needed by more than one client of libzpool. + */ + +void +nicenum(uint64_t num, char *buf) +{ + uint64_t n = num; + int index = 0; + char u; + + while (n >= 1024) { + n = (n + (1024 / 2)) / 1024; /* Round up or down */ + index++; + } + + u = " KMGTPE"[index]; + + if (index == 0) { + (void) sprintf(buf, "%llu", (u_longlong_t)n); + } else if (n < 10 && (num & (num - 1)) != 0) { + (void) sprintf(buf, "%.2f%c", + (double)num / (1ULL << 10 * index), u); + } else if (n < 100 && (num & (num - 1)) != 0) { + (void) sprintf(buf, "%.1f%c", + (double)num / (1ULL << 10 * index), u); + } else { + (void) sprintf(buf, "%llu%c", (u_longlong_t)n, u); + } +} + +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]; + char *prefix = ""; + + 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) { + (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); + + if (is_log) + prefix = "log "; + + if (nvlist_lookup_uint64_array(nv, ZPOOL_CONFIG_STATS, + (uint64_t **)&vs, &c) != 0) + vs = &v0; + + sec = MAX(1, vs->vs_timestamp / NANOSEC); + + nicenum(vs->vs_alloc, used); + nicenum(vs->vs_space - vs->vs_alloc, avail); + nicenum(vs->vs_ops[ZIO_TYPE_READ] / sec, rops); + nicenum(vs->vs_ops[ZIO_TYPE_WRITE] / sec, wops); + nicenum(vs->vs_bytes[ZIO_TYPE_READ] / sec, rbytes); + nicenum(vs->vs_bytes[ZIO_TYPE_WRITE] / sec, wbytes); + nicenum(vs->vs_read_errors, rerr); + nicenum(vs->vs_write_errors, werr); + nicenum(vs->vs_checksum_errors, cerr); + + (void) printf("%*s%s%*s%*s%*s %5s %5s %5s %5s %5s %5s %5s\n", + indent, "", + prefix, + indent + strlen(prefix) - 25 - (vs->vs_space ? 0 : 12), + desc, + 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); + } + + if (nvlist_lookup_nvlist_array(nv, ctype, &child, &children) != 0) + return; + + for (c = 0; c < children; c++) { + nvlist_t *cnv = child[c]; + char *cname, *tname; + uint64_t np; + if (nvlist_lookup_string(cnv, ZPOOL_CONFIG_PATH, &cname) && + nvlist_lookup_string(cnv, ZPOOL_CONFIG_TYPE, &cname)) + cname = "<unknown>"; + tname = calloc(1, strlen(cname) + 2); + (void) strcpy(tname, cname); + if (nvlist_lookup_uint64(cnv, ZPOOL_CONFIG_NPARITY, &np) == 0) + tname[strlen(tname)] = '0' + np; + show_vdev_stats(tname, ctype, cnv, indent + 2); + free(tname); + } +} + +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); +} |