| /* |
| * 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) 2013, 2018 by Delphix. All rights reserved. |
| * Copyright (c) 2016, 2017 Intel Corporation. |
| * Copyright 2016 Igor Kozhukhov <ikozhukhov@gmail.com>. |
| */ |
| |
| /* |
| * Functions to convert between a list of vdevs and an nvlist representing the |
| * configuration. Each entry in the list can be one of: |
| * |
| * Device vdevs |
| * disk=(path=..., devid=...) |
| * file=(path=...) |
| * |
| * Group vdevs |
| * raidz[1|2]=(...) |
| * mirror=(...) |
| * |
| * Hot spares |
| * |
| * While the underlying implementation supports it, group vdevs cannot contain |
| * other group vdevs. All userland verification of devices is contained within |
| * this file. If successful, the nvlist returned can be passed directly to the |
| * kernel; we've done as much verification as possible in userland. |
| * |
| * Hot spares are a special case, and passed down as an array of disk vdevs, at |
| * the same level as the root of the vdev tree. |
| * |
| * The only function exported by this file is 'make_root_vdev'. The |
| * function performs several passes: |
| * |
| * 1. Construct the vdev specification. Performs syntax validation and |
| * makes sure each device is valid. |
| * 2. Check for devices in use. Using libblkid to make sure that no |
| * devices are also in use. Some can be overridden using the 'force' |
| * flag, others cannot. |
| * 3. Check for replication errors if the 'force' flag is not specified. |
| * validates that the replication level is consistent across the |
| * entire pool. |
| * 4. Call libzfs to label any whole disks with an EFI label. |
| */ |
| |
| #include <assert.h> |
| #include <ctype.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <libintl.h> |
| #include <libnvpair.h> |
| #include <libzutil.h> |
| #include <limits.h> |
| #include <sys/spa.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <unistd.h> |
| #include "zpool_util.h" |
| #include <sys/zfs_context.h> |
| #include <sys/stat.h> |
| |
| /* |
| * For any given vdev specification, we can have multiple errors. The |
| * vdev_error() function keeps track of whether we have seen an error yet, and |
| * prints out a header if its the first error we've seen. |
| */ |
| boolean_t error_seen; |
| boolean_t is_force; |
| |
| /*PRINTFLIKE1*/ |
| void |
| vdev_error(const char *fmt, ...) |
| { |
| va_list ap; |
| |
| if (!error_seen) { |
| (void) fprintf(stderr, gettext("invalid vdev specification\n")); |
| if (!is_force) |
| (void) fprintf(stderr, gettext("use '-f' to override " |
| "the following errors:\n")); |
| else |
| (void) fprintf(stderr, gettext("the following errors " |
| "must be manually repaired:\n")); |
| error_seen = B_TRUE; |
| } |
| |
| va_start(ap, fmt); |
| (void) vfprintf(stderr, fmt, ap); |
| va_end(ap); |
| } |
| |
| /* |
| * Check that a file is valid. All we can do in this case is check that it's |
| * not in use by another pool, and not in use by swap. |
| */ |
| int |
| check_file(const char *file, boolean_t force, boolean_t isspare) |
| { |
| char *name; |
| int fd; |
| int ret = 0; |
| pool_state_t state; |
| boolean_t inuse; |
| |
| if ((fd = open(file, O_RDONLY)) < 0) |
| return (0); |
| |
| if (zpool_in_use(g_zfs, fd, &state, &name, &inuse) == 0 && inuse) { |
| const char *desc; |
| |
| switch (state) { |
| case POOL_STATE_ACTIVE: |
| desc = gettext("active"); |
| break; |
| |
| case POOL_STATE_EXPORTED: |
| desc = gettext("exported"); |
| break; |
| |
| case POOL_STATE_POTENTIALLY_ACTIVE: |
| desc = gettext("potentially active"); |
| break; |
| |
| default: |
| desc = gettext("unknown"); |
| break; |
| } |
| |
| /* |
| * Allow hot spares to be shared between pools. |
| */ |
| if (state == POOL_STATE_SPARE && isspare) { |
| free(name); |
| (void) close(fd); |
| return (0); |
| } |
| |
| if (state == POOL_STATE_ACTIVE || |
| state == POOL_STATE_SPARE || !force) { |
| switch (state) { |
| case POOL_STATE_SPARE: |
| vdev_error(gettext("%s is reserved as a hot " |
| "spare for pool %s\n"), file, name); |
| break; |
| default: |
| vdev_error(gettext("%s is part of %s pool " |
| "'%s'\n"), file, desc, name); |
| break; |
| } |
| ret = -1; |
| } |
| |
| free(name); |
| } |
| |
| (void) close(fd); |
| return (ret); |
| } |
| |
| /* |
| * This may be a shorthand device path or it could be total gibberish. |
| * Check to see if it is a known device available in zfs_vdev_paths. |
| * As part of this check, see if we've been given an entire disk |
| * (minus the slice number). |
| */ |
| static int |
| is_shorthand_path(const char *arg, char *path, size_t path_size, |
| struct stat64 *statbuf, boolean_t *wholedisk) |
| { |
| int error; |
| |
| error = zfs_resolve_shortname(arg, path, path_size); |
| if (error == 0) { |
| *wholedisk = zfs_dev_is_whole_disk(path); |
| if (*wholedisk || (stat64(path, statbuf) == 0)) |
| return (0); |
| } |
| |
| strlcpy(path, arg, path_size); |
| memset(statbuf, 0, sizeof (*statbuf)); |
| *wholedisk = B_FALSE; |
| |
| return (error); |
| } |
| |
| /* |
| * Determine if the given path is a hot spare within the given configuration. |
| * If no configuration is given we rely solely on the label. |
| */ |
| static boolean_t |
| is_spare(nvlist_t *config, const char *path) |
| { |
| int fd; |
| pool_state_t state; |
| char *name = NULL; |
| nvlist_t *label; |
| uint64_t guid, spareguid; |
| nvlist_t *nvroot; |
| nvlist_t **spares; |
| uint_t i, nspares; |
| boolean_t inuse; |
| |
| if (zpool_is_draid_spare(path)) |
| return (B_TRUE); |
| |
| if ((fd = open(path, O_RDONLY|O_DIRECT)) < 0) |
| return (B_FALSE); |
| |
| if (zpool_in_use(g_zfs, fd, &state, &name, &inuse) != 0 || |
| !inuse || |
| state != POOL_STATE_SPARE || |
| zpool_read_label(fd, &label, NULL) != 0) { |
| free(name); |
| (void) close(fd); |
| return (B_FALSE); |
| } |
| free(name); |
| (void) close(fd); |
| |
| if (config == NULL) { |
| nvlist_free(label); |
| return (B_TRUE); |
| } |
| |
| verify(nvlist_lookup_uint64(label, ZPOOL_CONFIG_GUID, &guid) == 0); |
| nvlist_free(label); |
| |
| verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, |
| &nvroot) == 0); |
| if (nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, |
| &spares, &nspares) == 0) { |
| for (i = 0; i < nspares; i++) { |
| verify(nvlist_lookup_uint64(spares[i], |
| ZPOOL_CONFIG_GUID, &spareguid) == 0); |
| if (spareguid == guid) |
| return (B_TRUE); |
| } |
| } |
| |
| return (B_FALSE); |
| } |
| |
| /* |
| * Create a leaf vdev. Determine if this is a file or a device. If it's a |
| * device, fill in the device id to make a complete nvlist. Valid forms for a |
| * leaf vdev are: |
| * |
| * /dev/xxx Complete disk path |
| * /xxx Full path to file |
| * xxx Shorthand for <zfs_vdev_paths>/xxx |
| * draid* Virtual dRAID spare |
| */ |
| static nvlist_t * |
| make_leaf_vdev(nvlist_t *props, const char *arg, boolean_t is_primary) |
| { |
| char path[MAXPATHLEN]; |
| struct stat64 statbuf; |
| nvlist_t *vdev = NULL; |
| char *type = NULL; |
| boolean_t wholedisk = B_FALSE; |
| uint64_t ashift = 0; |
| int err; |
| |
| /* |
| * Determine what type of vdev this is, and put the full path into |
| * 'path'. We detect whether this is a device of file afterwards by |
| * checking the st_mode of the file. |
| */ |
| if (arg[0] == '/') { |
| /* |
| * Complete device or file path. Exact type is determined by |
| * examining the file descriptor afterwards. Symbolic links |
| * are resolved to their real paths to determine whole disk |
| * and S_ISBLK/S_ISREG type checks. However, we are careful |
| * to store the given path as ZPOOL_CONFIG_PATH to ensure we |
| * can leverage udev's persistent device labels. |
| */ |
| if (realpath(arg, path) == NULL) { |
| (void) fprintf(stderr, |
| gettext("cannot resolve path '%s'\n"), arg); |
| return (NULL); |
| } |
| |
| wholedisk = zfs_dev_is_whole_disk(path); |
| if (!wholedisk && (stat64(path, &statbuf) != 0)) { |
| (void) fprintf(stderr, |
| gettext("cannot open '%s': %s\n"), |
| path, strerror(errno)); |
| return (NULL); |
| } |
| |
| /* After whole disk check restore original passed path */ |
| strlcpy(path, arg, sizeof (path)); |
| } else if (zpool_is_draid_spare(arg)) { |
| if (!is_primary) { |
| (void) fprintf(stderr, |
| gettext("cannot open '%s': dRAID spares can only " |
| "be used to replace primary vdevs\n"), arg); |
| return (NULL); |
| } |
| |
| wholedisk = B_TRUE; |
| strlcpy(path, arg, sizeof (path)); |
| type = VDEV_TYPE_DRAID_SPARE; |
| } else { |
| err = is_shorthand_path(arg, path, sizeof (path), |
| &statbuf, &wholedisk); |
| if (err != 0) { |
| /* |
| * If we got ENOENT, then the user gave us |
| * gibberish, so try to direct them with a |
| * reasonable error message. Otherwise, |
| * regurgitate strerror() since it's the best we |
| * can do. |
| */ |
| if (err == ENOENT) { |
| (void) fprintf(stderr, |
| gettext("cannot open '%s': no such " |
| "device in %s\n"), arg, DISK_ROOT); |
| (void) fprintf(stderr, |
| gettext("must be a full path or " |
| "shorthand device name\n")); |
| return (NULL); |
| } else { |
| (void) fprintf(stderr, |
| gettext("cannot open '%s': %s\n"), |
| path, strerror(errno)); |
| return (NULL); |
| } |
| } |
| } |
| |
| if (type == NULL) { |
| /* |
| * Determine whether this is a device or a file. |
| */ |
| if (wholedisk || S_ISBLK(statbuf.st_mode)) { |
| type = VDEV_TYPE_DISK; |
| } else if (S_ISREG(statbuf.st_mode)) { |
| type = VDEV_TYPE_FILE; |
| } else { |
| fprintf(stderr, gettext("cannot use '%s': must " |
| "be a block device or regular file\n"), path); |
| return (NULL); |
| } |
| } |
| |
| /* |
| * Finally, we have the complete device or file, and we know that it is |
| * acceptable to use. Construct the nvlist to describe this vdev. All |
| * vdevs have a 'path' element, and devices also have a 'devid' element. |
| */ |
| verify(nvlist_alloc(&vdev, NV_UNIQUE_NAME, 0) == 0); |
| verify(nvlist_add_string(vdev, ZPOOL_CONFIG_PATH, path) == 0); |
| verify(nvlist_add_string(vdev, ZPOOL_CONFIG_TYPE, type) == 0); |
| |
| if (strcmp(type, VDEV_TYPE_DISK) == 0) |
| verify(nvlist_add_uint64(vdev, ZPOOL_CONFIG_WHOLE_DISK, |
| (uint64_t)wholedisk) == 0); |
| |
| /* |
| * Override defaults if custom properties are provided. |
| */ |
| if (props != NULL) { |
| char *value = NULL; |
| |
| if (nvlist_lookup_string(props, |
| zpool_prop_to_name(ZPOOL_PROP_ASHIFT), &value) == 0) { |
| if (zfs_nicestrtonum(NULL, value, &ashift) != 0) { |
| (void) fprintf(stderr, |
| gettext("ashift must be a number.\n")); |
| return (NULL); |
| } |
| if (ashift != 0 && |
| (ashift < ASHIFT_MIN || ashift > ASHIFT_MAX)) { |
| (void) fprintf(stderr, |
| gettext("invalid 'ashift=%" PRIu64 "' " |
| "property: only values between %" PRId32 " " |
| "and %" PRId32 " are allowed.\n"), |
| ashift, ASHIFT_MIN, ASHIFT_MAX); |
| return (NULL); |
| } |
| } |
| } |
| |
| /* |
| * If the device is known to incorrectly report its physical sector |
| * size explicitly provide the known correct value. |
| */ |
| if (ashift == 0) { |
| int sector_size; |
| |
| if (check_sector_size_database(path, §or_size) == B_TRUE) |
| ashift = highbit64(sector_size) - 1; |
| } |
| |
| if (ashift > 0) |
| (void) nvlist_add_uint64(vdev, ZPOOL_CONFIG_ASHIFT, ashift); |
| |
| return (vdev); |
| } |
| |
| /* |
| * Go through and verify the replication level of the pool is consistent. |
| * Performs the following checks: |
| * |
| * For the new spec, verifies that devices in mirrors and raidz are the |
| * same size. |
| * |
| * If the current configuration already has inconsistent replication |
| * levels, ignore any other potential problems in the new spec. |
| * |
| * Otherwise, make sure that the current spec (if there is one) and the new |
| * spec have consistent replication levels. |
| * |
| * If there is no current spec (create), make sure new spec has at least |
| * one general purpose vdev. |
| */ |
| typedef struct replication_level { |
| char *zprl_type; |
| uint64_t zprl_children; |
| uint64_t zprl_parity; |
| } replication_level_t; |
| |
| #define ZPOOL_FUZZ (16 * 1024 * 1024) |
| |
| /* |
| * N.B. For the purposes of comparing replication levels dRAID can be |
| * considered functionally equivalent to raidz. |
| */ |
| static boolean_t |
| is_raidz_mirror(replication_level_t *a, replication_level_t *b, |
| replication_level_t **raidz, replication_level_t **mirror) |
| { |
| if ((strcmp(a->zprl_type, "raidz") == 0 || |
| strcmp(a->zprl_type, "draid") == 0) && |
| strcmp(b->zprl_type, "mirror") == 0) { |
| *raidz = a; |
| *mirror = b; |
| return (B_TRUE); |
| } |
| return (B_FALSE); |
| } |
| |
| /* |
| * Comparison for determining if dRAID and raidz where passed in either order. |
| */ |
| static boolean_t |
| is_raidz_draid(replication_level_t *a, replication_level_t *b) |
| { |
| if ((strcmp(a->zprl_type, "raidz") == 0 || |
| strcmp(a->zprl_type, "draid") == 0) && |
| (strcmp(b->zprl_type, "raidz") == 0 || |
| strcmp(b->zprl_type, "draid") == 0)) { |
| return (B_TRUE); |
| } |
| |
| return (B_FALSE); |
| } |
| |
| /* |
| * Given a list of toplevel vdevs, return the current replication level. If |
| * the config is inconsistent, then NULL is returned. If 'fatal' is set, then |
| * an error message will be displayed for each self-inconsistent vdev. |
| */ |
| static replication_level_t * |
| get_replication(nvlist_t *nvroot, boolean_t fatal) |
| { |
| nvlist_t **top; |
| uint_t t, toplevels; |
| nvlist_t **child; |
| uint_t c, children; |
| nvlist_t *nv; |
| char *type; |
| replication_level_t lastrep = {0}; |
| replication_level_t rep; |
| replication_level_t *ret; |
| replication_level_t *raidz, *mirror; |
| boolean_t dontreport; |
| |
| ret = safe_malloc(sizeof (replication_level_t)); |
| |
| verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, |
| &top, &toplevels) == 0); |
| |
| for (t = 0; t < toplevels; t++) { |
| uint64_t is_log = B_FALSE; |
| |
| nv = top[t]; |
| |
| /* |
| * For separate logs we ignore the top level vdev replication |
| * constraints. |
| */ |
| (void) nvlist_lookup_uint64(nv, ZPOOL_CONFIG_IS_LOG, &is_log); |
| if (is_log) |
| continue; |
| |
| /* Ignore holes introduced by removing aux devices */ |
| verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0); |
| if (strcmp(type, VDEV_TYPE_HOLE) == 0) |
| continue; |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
| &child, &children) != 0) { |
| /* |
| * This is a 'file' or 'disk' vdev. |
| */ |
| rep.zprl_type = type; |
| rep.zprl_children = 1; |
| rep.zprl_parity = 0; |
| } else { |
| int64_t vdev_size; |
| |
| /* |
| * This is a mirror or RAID-Z vdev. Go through and make |
| * sure the contents are all the same (files vs. disks), |
| * keeping track of the number of elements in the |
| * process. |
| * |
| * We also check that the size of each vdev (if it can |
| * be determined) is the same. |
| */ |
| rep.zprl_type = type; |
| rep.zprl_children = 0; |
| |
| if (strcmp(type, VDEV_TYPE_RAIDZ) == 0 || |
| strcmp(type, VDEV_TYPE_DRAID) == 0) { |
| verify(nvlist_lookup_uint64(nv, |
| ZPOOL_CONFIG_NPARITY, |
| &rep.zprl_parity) == 0); |
| assert(rep.zprl_parity != 0); |
| } else { |
| rep.zprl_parity = 0; |
| } |
| |
| /* |
| * The 'dontreport' variable indicates that we've |
| * already reported an error for this spec, so don't |
| * bother doing it again. |
| */ |
| type = NULL; |
| dontreport = 0; |
| vdev_size = -1LL; |
| for (c = 0; c < children; c++) { |
| nvlist_t *cnv = child[c]; |
| char *path; |
| struct stat64 statbuf; |
| int64_t size = -1LL; |
| char *childtype; |
| int fd, err; |
| |
| rep.zprl_children++; |
| |
| verify(nvlist_lookup_string(cnv, |
| ZPOOL_CONFIG_TYPE, &childtype) == 0); |
| |
| /* |
| * If this is a replacing or spare vdev, then |
| * get the real first child of the vdev: do this |
| * in a loop because replacing and spare vdevs |
| * can be nested. |
| */ |
| while (strcmp(childtype, |
| VDEV_TYPE_REPLACING) == 0 || |
| strcmp(childtype, VDEV_TYPE_SPARE) == 0) { |
| nvlist_t **rchild; |
| uint_t rchildren; |
| |
| verify(nvlist_lookup_nvlist_array(cnv, |
| ZPOOL_CONFIG_CHILDREN, &rchild, |
| &rchildren) == 0); |
| assert(rchildren == 2); |
| cnv = rchild[0]; |
| |
| verify(nvlist_lookup_string(cnv, |
| ZPOOL_CONFIG_TYPE, |
| &childtype) == 0); |
| } |
| |
| verify(nvlist_lookup_string(cnv, |
| ZPOOL_CONFIG_PATH, &path) == 0); |
| |
| /* |
| * If we have a raidz/mirror that combines disks |
| * with files, report it as an error. |
| */ |
| if (!dontreport && type != NULL && |
| strcmp(type, childtype) != 0) { |
| if (ret != NULL) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "mismatched replication " |
| "level: %s contains both " |
| "files and devices\n"), |
| rep.zprl_type); |
| else |
| return (NULL); |
| dontreport = B_TRUE; |
| } |
| |
| /* |
| * According to stat(2), the value of 'st_size' |
| * is undefined for block devices and character |
| * devices. But there is no effective way to |
| * determine the real size in userland. |
| * |
| * Instead, we'll take advantage of an |
| * implementation detail of spec_size(). If the |
| * device is currently open, then we (should) |
| * return a valid size. |
| * |
| * If we still don't get a valid size (indicated |
| * by a size of 0 or MAXOFFSET_T), then ignore |
| * this device altogether. |
| */ |
| if ((fd = open(path, O_RDONLY)) >= 0) { |
| err = fstat64_blk(fd, &statbuf); |
| (void) close(fd); |
| } else { |
| err = stat64(path, &statbuf); |
| } |
| |
| if (err != 0 || |
| statbuf.st_size == 0 || |
| statbuf.st_size == MAXOFFSET_T) |
| continue; |
| |
| size = statbuf.st_size; |
| |
| /* |
| * Also make sure that devices and |
| * slices have a consistent size. If |
| * they differ by a significant amount |
| * (~16MB) then report an error. |
| */ |
| if (!dontreport && |
| (vdev_size != -1LL && |
| (llabs(size - vdev_size) > |
| ZPOOL_FUZZ))) { |
| if (ret != NULL) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "%s contains devices of " |
| "different sizes\n"), |
| rep.zprl_type); |
| else |
| return (NULL); |
| dontreport = B_TRUE; |
| } |
| |
| type = childtype; |
| vdev_size = size; |
| } |
| } |
| |
| /* |
| * At this point, we have the replication of the last toplevel |
| * vdev in 'rep'. Compare it to 'lastrep' to see if it is |
| * different. |
| */ |
| if (lastrep.zprl_type != NULL) { |
| if (is_raidz_mirror(&lastrep, &rep, &raidz, &mirror) || |
| is_raidz_mirror(&rep, &lastrep, &raidz, &mirror)) { |
| /* |
| * Accepted raidz and mirror when they can |
| * handle the same number of disk failures. |
| */ |
| if (raidz->zprl_parity != |
| mirror->zprl_children - 1) { |
| if (ret != NULL) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "mismatched replication " |
| "level: " |
| "%s and %s vdevs with " |
| "different redundancy, " |
| "%llu vs. %llu (%llu-way) " |
| "are present\n"), |
| raidz->zprl_type, |
| mirror->zprl_type, |
| raidz->zprl_parity, |
| mirror->zprl_children - 1, |
| mirror->zprl_children); |
| else |
| return (NULL); |
| } |
| } else if (is_raidz_draid(&lastrep, &rep)) { |
| /* |
| * Accepted raidz and draid when they can |
| * handle the same number of disk failures. |
| */ |
| if (lastrep.zprl_parity != rep.zprl_parity) { |
| if (ret != NULL) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "mismatched replication " |
| "level: %s and %s vdevs " |
| "with different " |
| "redundancy, %llu vs. " |
| "%llu are present\n"), |
| lastrep.zprl_type, |
| rep.zprl_type, |
| lastrep.zprl_parity, |
| rep.zprl_parity); |
| else |
| return (NULL); |
| } |
| } else if (strcmp(lastrep.zprl_type, rep.zprl_type) != |
| 0) { |
| if (ret != NULL) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "mismatched replication level: " |
| "both %s and %s vdevs are " |
| "present\n"), |
| lastrep.zprl_type, rep.zprl_type); |
| else |
| return (NULL); |
| } else if (lastrep.zprl_parity != rep.zprl_parity) { |
| if (ret) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "mismatched replication level: " |
| "both %llu and %llu device parity " |
| "%s vdevs are present\n"), |
| lastrep.zprl_parity, |
| rep.zprl_parity, |
| rep.zprl_type); |
| else |
| return (NULL); |
| } else if (lastrep.zprl_children != rep.zprl_children) { |
| if (ret) |
| free(ret); |
| ret = NULL; |
| if (fatal) |
| vdev_error(gettext( |
| "mismatched replication level: " |
| "both %llu-way and %llu-way %s " |
| "vdevs are present\n"), |
| lastrep.zprl_children, |
| rep.zprl_children, |
| rep.zprl_type); |
| else |
| return (NULL); |
| } |
| } |
| lastrep = rep; |
| } |
| |
| if (ret != NULL) |
| *ret = rep; |
| |
| return (ret); |
| } |
| |
| /* |
| * Check the replication level of the vdev spec against the current pool. Calls |
| * get_replication() to make sure the new spec is self-consistent. If the pool |
| * has a consistent replication level, then we ignore any errors. Otherwise, |
| * report any difference between the two. |
| */ |
| static int |
| check_replication(nvlist_t *config, nvlist_t *newroot) |
| { |
| nvlist_t **child; |
| uint_t children; |
| replication_level_t *current = NULL, *new; |
| replication_level_t *raidz, *mirror; |
| int ret; |
| |
| /* |
| * If we have a current pool configuration, check to see if it's |
| * self-consistent. If not, simply return success. |
| */ |
| if (config != NULL) { |
| nvlist_t *nvroot; |
| |
| verify(nvlist_lookup_nvlist(config, ZPOOL_CONFIG_VDEV_TREE, |
| &nvroot) == 0); |
| if ((current = get_replication(nvroot, B_FALSE)) == NULL) |
| return (0); |
| } |
| /* |
| * for spares there may be no children, and therefore no |
| * replication level to check |
| */ |
| if ((nvlist_lookup_nvlist_array(newroot, ZPOOL_CONFIG_CHILDREN, |
| &child, &children) != 0) || (children == 0)) { |
| free(current); |
| return (0); |
| } |
| |
| /* |
| * If all we have is logs then there's no replication level to check. |
| */ |
| if (num_logs(newroot) == children) { |
| free(current); |
| return (0); |
| } |
| |
| /* |
| * Get the replication level of the new vdev spec, reporting any |
| * inconsistencies found. |
| */ |
| if ((new = get_replication(newroot, B_TRUE)) == NULL) { |
| free(current); |
| return (-1); |
| } |
| |
| /* |
| * Check to see if the new vdev spec matches the replication level of |
| * the current pool. |
| */ |
| ret = 0; |
| if (current != NULL) { |
| if (is_raidz_mirror(current, new, &raidz, &mirror) || |
| is_raidz_mirror(new, current, &raidz, &mirror)) { |
| if (raidz->zprl_parity != mirror->zprl_children - 1) { |
| vdev_error(gettext( |
| "mismatched replication level: pool and " |
| "new vdev with different redundancy, %s " |
| "and %s vdevs, %llu vs. %llu (%llu-way)\n"), |
| raidz->zprl_type, |
| mirror->zprl_type, |
| raidz->zprl_parity, |
| mirror->zprl_children - 1, |
| mirror->zprl_children); |
| ret = -1; |
| } |
| } else if (strcmp(current->zprl_type, new->zprl_type) != 0) { |
| vdev_error(gettext( |
| "mismatched replication level: pool uses %s " |
| "and new vdev is %s\n"), |
| current->zprl_type, new->zprl_type); |
| ret = -1; |
| } else if (current->zprl_parity != new->zprl_parity) { |
| vdev_error(gettext( |
| "mismatched replication level: pool uses %llu " |
| "device parity and new vdev uses %llu\n"), |
| current->zprl_parity, new->zprl_parity); |
| ret = -1; |
| } else if (current->zprl_children != new->zprl_children) { |
| vdev_error(gettext( |
| "mismatched replication level: pool uses %llu-way " |
| "%s and new vdev uses %llu-way %s\n"), |
| current->zprl_children, current->zprl_type, |
| new->zprl_children, new->zprl_type); |
| ret = -1; |
| } |
| } |
| |
| free(new); |
| if (current != NULL) |
| free(current); |
| |
| return (ret); |
| } |
| |
| static int |
| zero_label(char *path) |
| { |
| const int size = 4096; |
| char buf[size]; |
| int err, fd; |
| |
| if ((fd = open(path, O_WRONLY|O_EXCL)) < 0) { |
| (void) fprintf(stderr, gettext("cannot open '%s': %s\n"), |
| path, strerror(errno)); |
| return (-1); |
| } |
| |
| memset(buf, 0, size); |
| err = write(fd, buf, size); |
| (void) fdatasync(fd); |
| (void) close(fd); |
| |
| if (err == -1) { |
| (void) fprintf(stderr, gettext("cannot zero first %d bytes " |
| "of '%s': %s\n"), size, path, strerror(errno)); |
| return (-1); |
| } |
| |
| if (err != size) { |
| (void) fprintf(stderr, gettext("could only zero %d/%d bytes " |
| "of '%s'\n"), err, size, path); |
| return (-1); |
| } |
| |
| return (0); |
| } |
| |
| /* |
| * Go through and find any whole disks in the vdev specification, labelling them |
| * as appropriate. When constructing the vdev spec, we were unable to open this |
| * device in order to provide a devid. Now that we have labelled the disk and |
| * know that slice 0 is valid, we can construct the devid now. |
| * |
| * If the disk was already labeled with an EFI label, we will have gotten the |
| * devid already (because we were able to open the whole disk). Otherwise, we |
| * need to get the devid after we label the disk. |
| */ |
| static int |
| make_disks(zpool_handle_t *zhp, nvlist_t *nv) |
| { |
| nvlist_t **child; |
| uint_t c, children; |
| char *type, *path; |
| char devpath[MAXPATHLEN]; |
| char udevpath[MAXPATHLEN]; |
| uint64_t wholedisk; |
| struct stat64 statbuf; |
| int is_exclusive = 0; |
| int fd; |
| int ret; |
| |
| verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0); |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
| &child, &children) != 0) { |
| |
| if (strcmp(type, VDEV_TYPE_DISK) != 0) |
| return (0); |
| |
| /* |
| * We have a disk device. If this is a whole disk write |
| * out the efi partition table, otherwise write zero's to |
| * the first 4k of the partition. This is to ensure that |
| * libblkid will not misidentify the partition due to a |
| * magic value left by the previous filesystem. |
| */ |
| verify(!nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path)); |
| verify(!nvlist_lookup_uint64(nv, ZPOOL_CONFIG_WHOLE_DISK, |
| &wholedisk)); |
| |
| if (!wholedisk) { |
| /* |
| * Update device id string for mpath nodes (Linux only) |
| */ |
| if (is_mpath_whole_disk(path)) |
| update_vdev_config_dev_strs(nv); |
| |
| if (!is_spare(NULL, path)) |
| (void) zero_label(path); |
| return (0); |
| } |
| |
| if (realpath(path, devpath) == NULL) { |
| ret = errno; |
| (void) fprintf(stderr, |
| gettext("cannot resolve path '%s'\n"), path); |
| return (ret); |
| } |
| |
| /* |
| * Remove any previously existing symlink from a udev path to |
| * the device before labeling the disk. This ensures that |
| * only newly created links are used. Otherwise there is a |
| * window between when udev deletes and recreates the link |
| * during which access attempts will fail with ENOENT. |
| */ |
| strlcpy(udevpath, path, MAXPATHLEN); |
| (void) zfs_append_partition(udevpath, MAXPATHLEN); |
| |
| fd = open(devpath, O_RDWR|O_EXCL); |
| if (fd == -1) { |
| if (errno == EBUSY) |
| is_exclusive = 1; |
| #ifdef __FreeBSD__ |
| if (errno == EPERM) |
| is_exclusive = 1; |
| #endif |
| } else { |
| (void) close(fd); |
| } |
| |
| /* |
| * If the partition exists, contains a valid spare label, |
| * and is opened exclusively there is no need to partition |
| * it. Hot spares have already been partitioned and are |
| * held open exclusively by the kernel as a safety measure. |
| * |
| * If the provided path is for a /dev/disk/ device its |
| * symbolic link will be removed, partition table created, |
| * and then block until udev creates the new link. |
| */ |
| if (!is_exclusive && !is_spare(NULL, udevpath)) { |
| char *devnode = strrchr(devpath, '/') + 1; |
| |
| ret = strncmp(udevpath, UDISK_ROOT, strlen(UDISK_ROOT)); |
| if (ret == 0) { |
| ret = lstat64(udevpath, &statbuf); |
| if (ret == 0 && S_ISLNK(statbuf.st_mode)) |
| (void) unlink(udevpath); |
| } |
| |
| /* |
| * When labeling a pool the raw device node name |
| * is provided as it appears under /dev/. |
| */ |
| if (zpool_label_disk(g_zfs, zhp, devnode) == -1) |
| return (-1); |
| |
| /* |
| * Wait for udev to signal the device is available |
| * by the provided path. |
| */ |
| ret = zpool_label_disk_wait(udevpath, DISK_LABEL_WAIT); |
| if (ret) { |
| (void) fprintf(stderr, |
| gettext("missing link: %s was " |
| "partitioned but %s is missing\n"), |
| devnode, udevpath); |
| return (ret); |
| } |
| |
| ret = zero_label(udevpath); |
| if (ret) |
| return (ret); |
| } |
| |
| /* |
| * Update the path to refer to the partition. The presence of |
| * the 'whole_disk' field indicates to the CLI that we should |
| * chop off the partition number when displaying the device in |
| * future output. |
| */ |
| verify(nvlist_add_string(nv, ZPOOL_CONFIG_PATH, udevpath) == 0); |
| |
| /* |
| * Update device id strings for whole disks (Linux only) |
| */ |
| update_vdev_config_dev_strs(nv); |
| |
| return (0); |
| } |
| |
| for (c = 0; c < children; c++) |
| if ((ret = make_disks(zhp, child[c])) != 0) |
| return (ret); |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, |
| &child, &children) == 0) |
| for (c = 0; c < children; c++) |
| if ((ret = make_disks(zhp, child[c])) != 0) |
| return (ret); |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, |
| &child, &children) == 0) |
| for (c = 0; c < children; c++) |
| if ((ret = make_disks(zhp, child[c])) != 0) |
| return (ret); |
| |
| return (0); |
| } |
| |
| /* |
| * Go through and find any devices that are in use. We rely on libdiskmgt for |
| * the majority of this task. |
| */ |
| static boolean_t |
| is_device_in_use(nvlist_t *config, nvlist_t *nv, boolean_t force, |
| boolean_t replacing, boolean_t isspare) |
| { |
| nvlist_t **child; |
| uint_t c, children; |
| char *type, *path; |
| int ret = 0; |
| char buf[MAXPATHLEN]; |
| uint64_t wholedisk = B_FALSE; |
| boolean_t anyinuse = B_FALSE; |
| |
| verify(nvlist_lookup_string(nv, ZPOOL_CONFIG_TYPE, &type) == 0); |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN, |
| &child, &children) != 0) { |
| |
| verify(!nvlist_lookup_string(nv, ZPOOL_CONFIG_PATH, &path)); |
| if (strcmp(type, VDEV_TYPE_DISK) == 0) |
| verify(!nvlist_lookup_uint64(nv, |
| ZPOOL_CONFIG_WHOLE_DISK, &wholedisk)); |
| |
| /* |
| * As a generic check, we look to see if this is a replace of a |
| * hot spare within the same pool. If so, we allow it |
| * regardless of what libblkid or zpool_in_use() says. |
| */ |
| if (replacing) { |
| (void) strlcpy(buf, path, sizeof (buf)); |
| if (wholedisk) { |
| ret = zfs_append_partition(buf, sizeof (buf)); |
| if (ret == -1) |
| return (-1); |
| } |
| |
| if (is_spare(config, buf)) |
| return (B_FALSE); |
| } |
| |
| if (strcmp(type, VDEV_TYPE_DISK) == 0) |
| ret = check_device(path, force, isspare, wholedisk); |
| |
| else if (strcmp(type, VDEV_TYPE_FILE) == 0) |
| ret = check_file(path, force, isspare); |
| |
| return (ret != 0); |
| } |
| |
| for (c = 0; c < children; c++) |
| if (is_device_in_use(config, child[c], force, replacing, |
| B_FALSE)) |
| anyinuse = B_TRUE; |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_SPARES, |
| &child, &children) == 0) |
| for (c = 0; c < children; c++) |
| if (is_device_in_use(config, child[c], force, replacing, |
| B_TRUE)) |
| anyinuse = B_TRUE; |
| |
| if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_L2CACHE, |
| &child, &children) == 0) |
| for (c = 0; c < children; c++) |
| if (is_device_in_use(config, child[c], force, replacing, |
| B_FALSE)) |
| anyinuse = B_TRUE; |
| |
| return (anyinuse); |
| } |
| |
| /* |
| * Returns the parity level extracted from a raidz or draid type. |
| * If the parity cannot be determined zero is returned. |
| */ |
| static int |
| get_parity(const char *type) |
| { |
| long parity = 0; |
| const char *p; |
| |
| if (strncmp(type, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0) { |
| p = type + strlen(VDEV_TYPE_RAIDZ); |
| |
| if (*p == '\0') { |
| /* when unspecified default to single parity */ |
| return (1); |
| } else if (*p == '0') { |
| /* no zero prefixes allowed */ |
| return (0); |
| } else { |
| /* 0-3, no suffixes allowed */ |
| char *end; |
| errno = 0; |
| parity = strtol(p, &end, 10); |
| if (errno != 0 || *end != '\0' || |
| parity < 1 || parity > VDEV_RAIDZ_MAXPARITY) { |
| return (0); |
| } |
| } |
| } else if (strncmp(type, VDEV_TYPE_DRAID, |
| strlen(VDEV_TYPE_DRAID)) == 0) { |
| p = type + strlen(VDEV_TYPE_DRAID); |
| |
| if (*p == '\0' || *p == ':') { |
| /* when unspecified default to single parity */ |
| return (1); |
| } else if (*p == '0') { |
| /* no zero prefixes allowed */ |
| return (0); |
| } else { |
| /* 0-3, allowed suffixes: '\0' or ':' */ |
| char *end; |
| errno = 0; |
| parity = strtol(p, &end, 10); |
| if (errno != 0 || |
| parity < 1 || parity > VDEV_DRAID_MAXPARITY || |
| (*end != '\0' && *end != ':')) { |
| return (0); |
| } |
| } |
| } |
| |
| return ((int)parity); |
| } |
| |
| /* |
| * Assign the minimum and maximum number of devices allowed for |
| * the specified type. On error NULL is returned, otherwise the |
| * type prefix is returned (raidz, mirror, etc). |
| */ |
| static const char * |
| is_grouping(const char *type, int *mindev, int *maxdev) |
| { |
| int nparity; |
| |
| if (strncmp(type, VDEV_TYPE_RAIDZ, strlen(VDEV_TYPE_RAIDZ)) == 0 || |
| strncmp(type, VDEV_TYPE_DRAID, strlen(VDEV_TYPE_DRAID)) == 0) { |
| nparity = get_parity(type); |
| if (nparity == 0) |
| return (NULL); |
| if (mindev != NULL) |
| *mindev = nparity + 1; |
| if (maxdev != NULL) |
| *maxdev = 255; |
| |
| if (strncmp(type, VDEV_TYPE_RAIDZ, |
| strlen(VDEV_TYPE_RAIDZ)) == 0) { |
| return (VDEV_TYPE_RAIDZ); |
| } else { |
| return (VDEV_TYPE_DRAID); |
| } |
| } |
| |
| if (maxdev != NULL) |
| *maxdev = INT_MAX; |
| |
| if (strcmp(type, "mirror") == 0) { |
| if (mindev != NULL) |
| *mindev = 2; |
| return (VDEV_TYPE_MIRROR); |
| } |
| |
| if (strcmp(type, "spare") == 0) { |
| if (mindev != NULL) |
| *mindev = 1; |
| return (VDEV_TYPE_SPARE); |
| } |
| |
| if (strcmp(type, "log") == 0) { |
| if (mindev != NULL) |
| *mindev = 1; |
| return (VDEV_TYPE_LOG); |
| } |
| |
| if (strcmp(type, VDEV_ALLOC_BIAS_SPECIAL) == 0 || |
| strcmp(type, VDEV_ALLOC_BIAS_DEDUP) == 0) { |
| if (mindev != NULL) |
| *mindev = 1; |
| return (type); |
| } |
| |
| if (strcmp(type, "cache") == 0) { |
| if (mindev != NULL) |
| *mindev = 1; |
| return (VDEV_TYPE_L2CACHE); |
| } |
| |
| return (NULL); |
| } |
| |
| /* |
| * Extract the configuration parameters encoded in the dRAID type and |
| * use them to generate a dRAID configuration. The expected format is: |
| * |
| * draid[<parity>][:<data><d|D>][:<children><c|C>][:<spares><s|S>] |
| * |
| * The intent is to be able to generate a good configuration when no |
| * additional information is provided. The only mandatory component |
| * of the 'type' is the 'draid' prefix. If a value is not provided |
| * then reasonable defaults are used. The optional components may |
| * appear in any order but the d/s/c suffix is required. |
| * |
| * Valid inputs: |
| * - data: number of data devices per group (1-255) |
| * - parity: number of parity blocks per group (1-3) |
| * - spares: number of distributed spare (0-100) |
| * - children: total number of devices (1-255) |
| * |
| * Examples: |
| * - zpool create tank draid <devices...> |
| * - zpool create tank draid2:8d:51c:2s <devices...> |
| */ |
| static int |
| draid_config_by_type(nvlist_t *nv, const char *type, uint64_t children) |
| { |
| uint64_t nparity = 1; |
| uint64_t nspares = 0; |
| uint64_t ndata = UINT64_MAX; |
| uint64_t ngroups = 1; |
| long value; |
| |
| if (strncmp(type, VDEV_TYPE_DRAID, strlen(VDEV_TYPE_DRAID)) != 0) |
| return (EINVAL); |
| |
| nparity = (uint64_t)get_parity(type); |
| if (nparity == 0) |
| return (EINVAL); |
| |
| char *p = (char *)type; |
| while ((p = strchr(p, ':')) != NULL) { |
| char *end; |
| |
| p = p + 1; |
| errno = 0; |
| |
| if (!isdigit(p[0])) { |
| (void) fprintf(stderr, gettext("invalid dRAID " |
| "syntax; expected [:<number><c|d|s>] not '%s'\n"), |
| type); |
| return (EINVAL); |
| } |
| |
| /* Expected non-zero value with c/d/s suffix */ |
| value = strtol(p, &end, 10); |
| char suffix = tolower(*end); |
| if (errno != 0 || |
| (suffix != 'c' && suffix != 'd' && suffix != 's')) { |
| (void) fprintf(stderr, gettext("invalid dRAID " |
| "syntax; expected [:<number><c|d|s>] not '%s'\n"), |
| type); |
| return (EINVAL); |
| } |
| |
| if (suffix == 'c') { |
| if ((uint64_t)value != children) { |
| fprintf(stderr, |
| gettext("invalid number of dRAID children; " |
| "%llu required but %llu provided\n"), |
| (u_longlong_t)value, |
| (u_longlong_t)children); |
| return (EINVAL); |
| } |
| } else if (suffix == 'd') { |
| ndata = (uint64_t)value; |
| } else if (suffix == 's') { |
| nspares = (uint64_t)value; |
| } else { |
| verify(0); /* Unreachable */ |
| } |
| } |
| |
| /* |
| * When a specific number of data disks is not provided limit a |
| * redundancy group to 8 data disks. This value was selected to |
| * provide a reasonable tradeoff between capacity and performance. |
| */ |
| if (ndata == UINT64_MAX) { |
| if (children > nspares + nparity) { |
| ndata = MIN(children - nspares - nparity, 8); |
| } else { |
| fprintf(stderr, gettext("request number of " |
| "distributed spares %llu and parity level %llu\n" |
| "leaves no disks available for data\n"), |
| (u_longlong_t)nspares, (u_longlong_t)nparity); |
| return (EINVAL); |
| } |
| } |
| |
| /* Verify the maximum allowed group size is never exceeded. */ |
| if (ndata == 0 || (ndata + nparity > children - nspares)) { |
| fprintf(stderr, gettext("requested number of dRAID data " |
| "disks per group %llu is too high,\nat most %llu disks " |
| "are available for data\n"), (u_longlong_t)ndata, |
| (u_longlong_t)(children - nspares - nparity)); |
| return (EINVAL); |
| } |
| |
| if (nparity == 0 || nparity > VDEV_DRAID_MAXPARITY) { |
| fprintf(stderr, |
| gettext("invalid dRAID parity level %llu; must be " |
| "between 1 and %d\n"), (u_longlong_t)nparity, |
| VDEV_DRAID_MAXPARITY); |
| return (EINVAL); |
| } |
| |
| /* |
| * Verify the requested number of spares can be satisfied. |
| * An arbitrary limit of 100 distributed spares is applied. |
| */ |
| if (nspares > 100 || nspares > (children - (ndata + nparity))) { |
| fprintf(stderr, |
| gettext("invalid number of dRAID spares %llu; additional " |
| "disks would be required\n"), (u_longlong_t)nspares); |
| return (EINVAL); |
| } |
| |
| /* Verify the requested number children is sufficient. */ |
| if (children < (ndata + nparity + nspares)) { |
| fprintf(stderr, gettext("%llu disks were provided, but at " |
| "least %llu disks are required for this config\n"), |
| (u_longlong_t)children, |
| (u_longlong_t)(ndata + nparity + nspares)); |
| } |
| |
| if (children > VDEV_DRAID_MAX_CHILDREN) { |
| fprintf(stderr, gettext("%llu disks were provided, but " |
| "dRAID only supports up to %u disks"), |
| (u_longlong_t)children, VDEV_DRAID_MAX_CHILDREN); |
| } |
| |
| /* |
| * Calculate the minimum number of groups required to fill a slice. |
| * This is the LCM of the stripe width (ndata + nparity) and the |
| * number of data drives (children - nspares). |
| */ |
| while (ngroups * (ndata + nparity) % (children - nspares) != 0) |
| ngroups++; |
| |
| /* Store the basic dRAID configuration. */ |
| fnvlist_add_uint64(nv, ZPOOL_CONFIG_NPARITY, nparity); |
| fnvlist_add_uint64(nv, ZPOOL_CONFIG_DRAID_NDATA, ndata); |
| fnvlist_add_uint64(nv, ZPOOL_CONFIG_DRAID_NSPARES, nspares); |
| fnvlist_add_uint64(nv, ZPOOL_CONFIG_DRAID_NGROUPS, ngroups); |
| |
| return (0); |
| } |
| |
| /* |
| * Construct a syntactically valid vdev specification, |
| * and ensure that all devices and files exist and can be opened. |
| * Note: we don't bother freeing anything in the error paths |
| * because the program is just going to exit anyway. |
| */ |
| static nvlist_t * |
| construct_spec(nvlist_t *props, int argc, char **argv) |
| { |
| nvlist_t *nvroot, *nv, **top, **spares, **l2cache; |
| int t, toplevels, mindev, maxdev, nspares, nlogs, nl2cache; |
| const char *type, *fulltype; |
| boolean_t is_log, is_special, is_dedup, is_spare; |
| boolean_t seen_logs; |
| |
| top = NULL; |
| toplevels = 0; |
| spares = NULL; |
| l2cache = NULL; |
| nspares = 0; |
| nlogs = 0; |
| nl2cache = 0; |
| is_log = is_special = is_dedup = is_spare = B_FALSE; |
| seen_logs = B_FALSE; |
| nvroot = NULL; |
| |
| while (argc > 0) { |
| fulltype = argv[0]; |
| nv = NULL; |
| |
| /* |
| * If it's a mirror, raidz, or draid the subsequent arguments |
| * are its leaves -- until we encounter the next mirror, |
| * raidz or draid. |
| */ |
| if ((type = is_grouping(fulltype, &mindev, &maxdev)) != NULL) { |
| nvlist_t **child = NULL; |
| int c, children = 0; |
| |
| if (strcmp(type, VDEV_TYPE_SPARE) == 0) { |
| if (spares != NULL) { |
| (void) fprintf(stderr, |
| gettext("invalid vdev " |
| "specification: 'spare' can be " |
| "specified only once\n")); |
| goto spec_out; |
| } |
| is_spare = B_TRUE; |
| is_log = is_special = is_dedup = B_FALSE; |
| } |
| |
| if (strcmp(type, VDEV_TYPE_LOG) == 0) { |
| if (seen_logs) { |
| (void) fprintf(stderr, |
| gettext("invalid vdev " |
| "specification: 'log' can be " |
| "specified only once\n")); |
| goto spec_out; |
| } |
| seen_logs = B_TRUE; |
| is_log = B_TRUE; |
| is_special = is_dedup = is_spare = B_FALSE; |
| argc--; |
| argv++; |
| /* |
| * A log is not a real grouping device. |
| * We just set is_log and continue. |
| */ |
| continue; |
| } |
| |
| if (strcmp(type, VDEV_ALLOC_BIAS_SPECIAL) == 0) { |
| is_special = B_TRUE; |
| is_log = is_dedup = is_spare = B_FALSE; |
| argc--; |
| argv++; |
| continue; |
| } |
| |
| if (strcmp(type, VDEV_ALLOC_BIAS_DEDUP) == 0) { |
| is_dedup = B_TRUE; |
| is_log = is_special = is_spare = B_FALSE; |
| argc--; |
| argv++; |
| continue; |
| } |
| |
| if (strcmp(type, VDEV_TYPE_L2CACHE) == 0) { |
| if (l2cache != NULL) { |
| (void) fprintf(stderr, |
| gettext("invalid vdev " |
| "specification: 'cache' can be " |
| "specified only once\n")); |
| goto spec_out; |
| } |
| is_log = is_special = B_FALSE; |
| is_dedup = is_spare = B_FALSE; |
| } |
| |
| if (is_log || is_special || is_dedup) { |
| if (strcmp(type, VDEV_TYPE_MIRROR) != 0) { |
| (void) fprintf(stderr, |
| gettext("invalid vdev " |
| "specification: unsupported '%s' " |
| "device: %s\n"), is_log ? "log" : |
| "special", type); |
| goto spec_out; |
| } |
| nlogs++; |
| } |
| |
| for (c = 1; c < argc; c++) { |
| if (is_grouping(argv[c], NULL, NULL) != NULL) |
| break; |
| |
| children++; |
| child = realloc(child, |
| children * sizeof (nvlist_t *)); |
| if (child == NULL) |
| zpool_no_memory(); |
| if ((nv = make_leaf_vdev(props, argv[c], |
| !(is_log || is_special || is_dedup || |
| is_spare))) == NULL) { |
| for (c = 0; c < children - 1; c++) |
| nvlist_free(child[c]); |
| free(child); |
| goto spec_out; |
| } |
| |
| child[children - 1] = nv; |
| } |
| |
| if (children < mindev) { |
| (void) fprintf(stderr, gettext("invalid vdev " |
| "specification: %s requires at least %d " |
| "devices\n"), argv[0], mindev); |
| for (c = 0; c < children; c++) |
| nvlist_free(child[c]); |
| free(child); |
| goto spec_out; |
| } |
| |
| if (children > maxdev) { |
| (void) fprintf(stderr, gettext("invalid vdev " |
| "specification: %s supports no more than " |
| "%d devices\n"), argv[0], maxdev); |
| for (c = 0; c < children; c++) |
| nvlist_free(child[c]); |
| free(child); |
| goto spec_out; |
| } |
| |
| argc -= c; |
| argv += c; |
| |
| if (strcmp(type, VDEV_TYPE_SPARE) == 0) { |
| spares = child; |
| nspares = children; |
| continue; |
| } else if (strcmp(type, VDEV_TYPE_L2CACHE) == 0) { |
| l2cache = child; |
| nl2cache = children; |
| continue; |
| } else { |
| /* create a top-level vdev with children */ |
| verify(nvlist_alloc(&nv, NV_UNIQUE_NAME, |
| 0) == 0); |
| verify(nvlist_add_string(nv, ZPOOL_CONFIG_TYPE, |
| type) == 0); |
| verify(nvlist_add_uint64(nv, |
| ZPOOL_CONFIG_IS_LOG, is_log) == 0); |
| if (is_log) { |
| verify(nvlist_add_string(nv, |
| ZPOOL_CONFIG_ALLOCATION_BIAS, |
| VDEV_ALLOC_BIAS_LOG) == 0); |
| } |
| if (is_special) { |
| verify(nvlist_add_string(nv, |
| ZPOOL_CONFIG_ALLOCATION_BIAS, |
| VDEV_ALLOC_BIAS_SPECIAL) == 0); |
| } |
| if (is_dedup) { |
| verify(nvlist_add_string(nv, |
| ZPOOL_CONFIG_ALLOCATION_BIAS, |
| VDEV_ALLOC_BIAS_DEDUP) == 0); |
| } |
| if (strcmp(type, VDEV_TYPE_RAIDZ) == 0) { |
| verify(nvlist_add_uint64(nv, |
| ZPOOL_CONFIG_NPARITY, |
| mindev - 1) == 0); |
| } |
| if (strcmp(type, VDEV_TYPE_DRAID) == 0) { |
| if (draid_config_by_type(nv, |
| fulltype, children) != 0) { |
| for (c = 0; c < children; c++) |
| nvlist_free(child[c]); |
| free(child); |
| goto spec_out; |
| } |
| } |
| verify(nvlist_add_nvlist_array(nv, |
| ZPOOL_CONFIG_CHILDREN, child, |
| children) == 0); |
| |
| for (c = 0; c < children; c++) |
| nvlist_free(child[c]); |
| free(child); |
| } |
| } else { |
| /* |
| * We have a device. Pass off to make_leaf_vdev() to |
| * construct the appropriate nvlist describing the vdev. |
| */ |
| if ((nv = make_leaf_vdev(props, argv[0], !(is_log || |
| is_special || is_dedup || is_spare))) == NULL) |
| goto spec_out; |
| |
| verify(nvlist_add_uint64(nv, |
| ZPOOL_CONFIG_IS_LOG, is_log) == 0); |
| if (is_log) { |
| verify(nvlist_add_string(nv, |
| ZPOOL_CONFIG_ALLOCATION_BIAS, |
| VDEV_ALLOC_BIAS_LOG) == 0); |
| nlogs++; |
| } |
| |
| if (is_special) { |
| verify(nvlist_add_string(nv, |
| ZPOOL_CONFIG_ALLOCATION_BIAS, |
| VDEV_ALLOC_BIAS_SPECIAL) == 0); |
| } |
| if (is_dedup) { |
| verify(nvlist_add_string(nv, |
| ZPOOL_CONFIG_ALLOCATION_BIAS, |
| VDEV_ALLOC_BIAS_DEDUP) == 0); |
| } |
| argc--; |
| argv++; |
| } |
| |
| toplevels++; |
| top = realloc(top, toplevels * sizeof (nvlist_t *)); |
| if (top == NULL) |
| zpool_no_memory(); |
| top[toplevels - 1] = nv; |
| } |
| |
| if (toplevels == 0 && nspares == 0 && nl2cache == 0) { |
| (void) fprintf(stderr, gettext("invalid vdev " |
| "specification: at least one toplevel vdev must be " |
| "specified\n")); |
| goto spec_out; |
| } |
| |
| if (seen_logs && nlogs == 0) { |
| (void) fprintf(stderr, gettext("invalid vdev specification: " |
| "log requires at least 1 device\n")); |
| goto spec_out; |
| } |
| |
| /* |
| * Finally, create nvroot and add all top-level vdevs to it. |
| */ |
| verify(nvlist_alloc(&nvroot, NV_UNIQUE_NAME, 0) == 0); |
| verify(nvlist_add_string(nvroot, ZPOOL_CONFIG_TYPE, |
| VDEV_TYPE_ROOT) == 0); |
| verify(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, |
| top, toplevels) == 0); |
| if (nspares != 0) |
| verify(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_SPARES, |
| spares, nspares) == 0); |
| if (nl2cache != 0) |
| verify(nvlist_add_nvlist_array(nvroot, ZPOOL_CONFIG_L2CACHE, |
| l2cache, nl2cache) == 0); |
| |
| spec_out: |
| for (t = 0; t < toplevels; t++) |
| nvlist_free(top[t]); |
| for (t = 0; t < nspares; t++) |
| nvlist_free(spares[t]); |
| for (t = 0; t < nl2cache; t++) |
| nvlist_free(l2cache[t]); |
| |
| free(spares); |
| free(l2cache); |
| free(top); |
| |
| return (nvroot); |
| } |
| |
| nvlist_t * |
| split_mirror_vdev(zpool_handle_t *zhp, char *newname, nvlist_t *props, |
| splitflags_t flags, int argc, char **argv) |
| { |
| nvlist_t *newroot = NULL, **child; |
| uint_t c, children; |
| |
| if (argc > 0) { |
| if ((newroot = construct_spec(props, argc, argv)) == NULL) { |
| (void) fprintf(stderr, gettext("Unable to build a " |
| "pool from the specified devices\n")); |
| return (NULL); |
| } |
| |
| if (!flags.dryrun && make_disks(zhp, newroot) != 0) { |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| /* avoid any tricks in the spec */ |
| verify(nvlist_lookup_nvlist_array(newroot, |
| ZPOOL_CONFIG_CHILDREN, &child, &children) == 0); |
| for (c = 0; c < children; c++) { |
| char *path; |
| const char *type; |
| int min, max; |
| |
| verify(nvlist_lookup_string(child[c], |
| ZPOOL_CONFIG_PATH, &path) == 0); |
| if ((type = is_grouping(path, &min, &max)) != NULL) { |
| (void) fprintf(stderr, gettext("Cannot use " |
| "'%s' as a device for splitting\n"), type); |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| } |
| } |
| |
| if (zpool_vdev_split(zhp, newname, &newroot, props, flags) != 0) { |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| return (newroot); |
| } |
| |
| static int |
| num_normal_vdevs(nvlist_t *nvroot) |
| { |
| nvlist_t **top; |
| uint_t t, toplevels, normal = 0; |
| |
| verify(nvlist_lookup_nvlist_array(nvroot, ZPOOL_CONFIG_CHILDREN, |
| &top, &toplevels) == 0); |
| |
| for (t = 0; t < toplevels; t++) { |
| uint64_t log = B_FALSE; |
| |
| (void) nvlist_lookup_uint64(top[t], ZPOOL_CONFIG_IS_LOG, &log); |
| if (log) |
| continue; |
| if (nvlist_exists(top[t], ZPOOL_CONFIG_ALLOCATION_BIAS)) |
| continue; |
| |
| normal++; |
| } |
| |
| return (normal); |
| } |
| |
| /* |
| * Get and validate the contents of the given vdev specification. This ensures |
| * that the nvlist returned is well-formed, that all the devices exist, and that |
| * they are not currently in use by any other known consumer. The 'poolconfig' |
| * parameter is the current configuration of the pool when adding devices |
| * existing pool, and is used to perform additional checks, such as changing the |
| * replication level of the pool. It can be 'NULL' to indicate that this is a |
| * new pool. The 'force' flag controls whether devices should be forcefully |
| * added, even if they appear in use. |
| */ |
| nvlist_t * |
| make_root_vdev(zpool_handle_t *zhp, nvlist_t *props, int force, int check_rep, |
| boolean_t replacing, boolean_t dryrun, int argc, char **argv) |
| { |
| nvlist_t *newroot; |
| nvlist_t *poolconfig = NULL; |
| is_force = force; |
| |
| /* |
| * Construct the vdev specification. If this is successful, we know |
| * that we have a valid specification, and that all devices can be |
| * opened. |
| */ |
| if ((newroot = construct_spec(props, argc, argv)) == NULL) |
| return (NULL); |
| |
| if (zhp && ((poolconfig = zpool_get_config(zhp, NULL)) == NULL)) { |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| /* |
| * Validate each device to make sure that it's not shared with another |
| * subsystem. We do this even if 'force' is set, because there are some |
| * uses (such as a dedicated dump device) that even '-f' cannot |
| * override. |
| */ |
| if (is_device_in_use(poolconfig, newroot, force, replacing, B_FALSE)) { |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| /* |
| * Check the replication level of the given vdevs and report any errors |
| * found. We include the existing pool spec, if any, as we need to |
| * catch changes against the existing replication level. |
| */ |
| if (check_rep && check_replication(poolconfig, newroot) != 0) { |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| /* |
| * On pool create the new vdev spec must have one normal vdev. |
| */ |
| if (poolconfig == NULL && num_normal_vdevs(newroot) == 0) { |
| vdev_error(gettext("at least one general top-level vdev must " |
| "be specified\n")); |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| /* |
| * Run through the vdev specification and label any whole disks found. |
| */ |
| if (!dryrun && make_disks(zhp, newroot) != 0) { |
| nvlist_free(newroot); |
| return (NULL); |
| } |
| |
| return (newroot); |
| } |