From 7f1d6c8fec531fa1762d6d65576aecbee837982c Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 10 Apr 2024 22:55:34 +0200 Subject: Adding upstream version 4.3. Signed-off-by: Daniel Baumann --- mdadm.c | 1994 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1994 insertions(+) create mode 100644 mdadm.c (limited to 'mdadm.c') diff --git a/mdadm.c b/mdadm.c new file mode 100644 index 0000000..3f19128 --- /dev/null +++ b/mdadm.c @@ -0,0 +1,1994 @@ +/* + * mdadm - manage Linux "md" devices aka RAID arrays. + * + * Copyright (C) 2001-2013 Neil Brown + * + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + * Author: Neil Brown + * Email: + * + * Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004, + * Paul Clements, SteelEye Technology, Inc. + */ + +#include "mdadm.h" +#include "md_p.h" +#include + +static int scan_assemble(struct supertype *ss, + struct context *c, + struct mddev_ident *ident); +static int misc_scan(char devmode, struct context *c); +static int stop_scan(int verbose); +static int misc_list(struct mddev_dev *devlist, + struct mddev_ident *ident, + char *dump_directory, + struct supertype *ss, struct context *c); +const char Name[] = "mdadm"; + +int main(int argc, char *argv[]) +{ + int mode = 0; + int opt; + int option_index; + int rv; + int i; + + unsigned long long array_size = 0; + struct mddev_ident ident; + char *configfile = NULL; + int devmode = 0; + int bitmap_fd = -1; + struct mddev_dev *devlist = NULL; + struct mddev_dev **devlistend = & devlist; + struct mddev_dev *dv; + mdu_array_info_t array; + int devs_found = 0; + int grow_continue = 0; + /* autof indicates whether and how to create device node. + * bottom 3 bits are style. Rest (when shifted) are number of parts + * 0 - unset + * 1 - don't create (no) + * 2 - if is_standard, then create (yes) + * 3 - create as 'md' - reject is_standard mdp (md) + * 4 - create as 'mdp' - reject is_standard md (mdp) + * 5 - default to md if not is_standard (md in config file) + * 6 - default to mdp if not is_standard (part, or mdp in config file) + */ + struct context c = { + .require_homehost = 1, + }; + struct shape s = { + .journaldisks = 0, + .level = UnSet, + .layout = UnSet, + .bitmap_chunk = UnSet, + .consistency_policy = CONSISTENCY_POLICY_UNKNOWN, + .data_offset = INVALID_SECTORS, + }; + + char sys_hostname[256]; + char *mailaddr = NULL; + char *program = NULL; + int increments = 20; + int daemonise = 0; + char *pidfile = NULL; + int oneshot = 0; + int spare_sharing = 1; + struct supertype *ss = NULL; + enum flag_mode writemostly = FlagDefault; + enum flag_mode failfast = FlagDefault; + char *shortopt = short_options; + int dosyslog = 0; + int rebuild_map = 0; + char *remove_path = NULL; + char *udev_filename = NULL; + char *dump_directory = NULL; + + int print_help = 0; + FILE *outf = NULL; + + int mdfd = -1; + int locked = 0; + + srandom(time(0) ^ getpid()); + + if (get_linux_version() < 2006032) { + pr_err("This version of mdadm does not support kernels older than 2.6.32\n"); + exit(1); + } + + ident_init(&ident); + + while ((option_index = -1), + (opt = getopt_long(argc, argv, shortopt, long_options, + &option_index)) != -1) { + int newmode = mode; + /* firstly, some mode-independent options */ + switch(opt) { + case HelpOptions: + print_help = 2; + continue; + case 'h': + print_help = 1; + continue; + + case 'V': + fputs(Version, stderr); + exit(0); + + case 'v': c.verbose++; + continue; + + case 'q': c.verbose--; + continue; + + case 'b': + if (mode == ASSEMBLE || mode == BUILD || + mode == CREATE || mode == GROW || + mode == INCREMENTAL || mode == MANAGE) + break; /* b means bitmap */ + case Brief: + c.brief = 1; + continue; + + case NoDevices: + c.no_devices = 1; + continue; + + case 'Y': c.export++; + continue; + + case HomeHost: + if (is_devname_ignore(optarg) == true) + c.require_homehost = 0; + else + c.homehost = optarg; + continue; + + case OffRootOpt: + /* Silently ignore old option */ + continue; + + case Prefer: + if (c.prefer) + free(c.prefer); + if (asprintf(&c.prefer, "/%s/", optarg) <= 0) + c.prefer = NULL; + continue; + + case ':': + case '?': + fputs(Usage, stderr); + exit(2); + } + /* second, figure out the mode. + * Some options force the mode. Others + * set the mode if it isn't already + */ + + switch(opt) { + case ManageOpt: + newmode = MANAGE; + shortopt = short_bitmap_options; + break; + case 'a': + case Add: + case AddSpare: + case AddJournal: + case 'r': + case Remove: + case Replace: + case With: + case 'f': + case Fail: + case ReAdd: /* re-add */ + case ClusterConfirm: + if (!mode) { + newmode = MANAGE; + shortopt = short_bitmap_options; + } + break; + + case 'A': newmode = ASSEMBLE; + shortopt = short_bitmap_auto_options; + break; + case 'B': newmode = BUILD; + shortopt = short_bitmap_auto_options; + break; + case 'C': newmode = CREATE; + shortopt = short_bitmap_auto_options; + break; + case 'F': newmode = MONITOR; + shortopt = short_monitor_options; + break; + case 'G': newmode = GROW; + shortopt = short_bitmap_options; + break; + case 'I': newmode = INCREMENTAL; + shortopt = short_bitmap_auto_options; + break; + case AutoDetect: + newmode = AUTODETECT; + break; + + case MiscOpt: + case 'D': + case 'E': + case 'X': + case 'Q': + case ExamineBB: + case Dump: + case Restore: + case Action: + newmode = MISC; + break; + + case 'R': + case 'S': + case 'o': + case 'w': + case 'W': + case WaitOpt: + case Waitclean: + case DetailPlatform: + case KillSubarray: + case UpdateSubarray: + case UdevRules: + case KillOpt: + if (!mode) + newmode = MISC; + break; + + case NoSharing: + newmode = MONITOR; + break; + } + if (mode && newmode == mode) { + /* everybody happy ! */ + } else if (mode && newmode != mode) { + /* not allowed.. */ + pr_err(""); + if (option_index >= 0) + fprintf(stderr, "--%s", long_options[option_index].name); + else + fprintf(stderr, "-%c", opt); + fprintf(stderr, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n", + map_num_s(modes, newmode), + map_num_s(modes, mode)); + exit(2); + } else if (!mode && newmode) { + mode = newmode; + if (mode == MISC && devs_found) { + pr_err("No action given for %s in --misc mode\n", + devlist->devname); + cont_err("Action options must come before device names\n"); + exit(2); + } + } else { + /* special case of -c --help */ + if ((opt == 'c' || opt == ConfigFile) && + (strncmp(optarg, "--h", 3) == 0 || + strncmp(optarg, "-h", 2) == 0)) { + fputs(Help_config, stdout); + exit(0); + } + + /* If first option is a device, don't force the mode yet */ + if (opt == 1) { + if (devs_found == 0) { + dv = xmalloc(sizeof(*dv)); + dv->devname = optarg; + dv->disposition = devmode; + dv->writemostly = writemostly; + dv->failfast = failfast; + dv->used = 0; + dv->next = NULL; + *devlistend = dv; + devlistend = &dv->next; + + devs_found++; + continue; + } + /* No mode yet, and this is the second device ... */ + pr_err("An option must be given to set the mode before a second device\n" + " (%s) is listed\n", optarg); + exit(2); + } + if (option_index >= 0) + pr_err("--%s", long_options[option_index].name); + else + pr_err("-%c", opt); + fprintf(stderr, " does not set the mode, and so cannot be the first option.\n"); + exit(2); + } + + /* if we just set the mode, then done */ + switch(opt) { + case ManageOpt: + case MiscOpt: + case 'A': + case 'B': + case 'C': + case 'F': + case 'G': + case 'I': + case AutoDetect: + continue; + } + if (opt == 1) { + /* an undecorated option - must be a device name. + */ + + if (devs_found > 0 && devmode == DetailPlatform) { + pr_err("controller may only be specified once. %s ignored\n", + optarg); + continue; + } + + if (devs_found > 0 && mode == MANAGE && !devmode) { + pr_err("Must give one of -a/-r/-f for subsequent devices at %s\n", optarg); + exit(2); + } + if (devs_found > 0 && mode == GROW && !devmode) { + pr_err("Must give -a/--add for devices to add: %s\n", optarg); + exit(2); + } + dv = xmalloc(sizeof(*dv)); + dv->devname = optarg; + dv->disposition = devmode; + dv->writemostly = writemostly; + dv->failfast = failfast; + dv->used = 0; + dv->next = NULL; + *devlistend = dv; + devlistend = &dv->next; + + devs_found++; + continue; + } + + /* We've got a mode, and opt is now something else which + * could depend on the mode */ +#define O(a,b) ((a<<16)|b) + switch (O(mode,opt)) { + case O(GROW,'c'): + case O(GROW,ChunkSize): + case O(CREATE,'c'): + case O(CREATE,ChunkSize): + case O(BUILD,'c'): /* chunk or rounding */ + case O(BUILD,ChunkSize): /* chunk or rounding */ + if (s.chunk) { + pr_err("chunk/rounding may only be specified once. Second value is %s.\n", optarg); + exit(2); + } + s.chunk = parse_size(optarg); + if (s.chunk == INVALID_SECTORS || + s.chunk < 8 || (s.chunk&1)) { + pr_err("invalid chunk/rounding value: %s\n", + optarg); + exit(2); + } + /* Convert sectors to K */ + s.chunk /= 2; + continue; + + case O(INCREMENTAL, 'e'): + case O(CREATE,'e'): + case O(ASSEMBLE,'e'): + case O(MISC,'e'): /* set metadata (superblock) information */ + if (ss) { + pr_err("metadata information already given\n"); + exit(2); + } + for(i = 0; !ss && superlist[i]; i++) + ss = superlist[i]->match_metadata_desc(optarg); + + if (!ss) { + pr_err("unrecognised metadata identifier: %s\n", optarg); + exit(2); + } + continue; + + case O(MANAGE,'W'): + case O(MANAGE,WriteMostly): + case O(BUILD,'W'): + case O(BUILD,WriteMostly): + case O(CREATE,'W'): + case O(CREATE,WriteMostly): + /* set write-mostly for following devices */ + writemostly = FlagSet; + continue; + + case O(MANAGE,'w'): + /* clear write-mostly for following devices */ + writemostly = FlagClear; + continue; + + case O(MANAGE,FailFast): + case O(CREATE,FailFast): + failfast = FlagSet; + continue; + case O(MANAGE,NoFailFast): + failfast = FlagClear; + continue; + + case O(GROW,'z'): + case O(CREATE,'z'): + case O(BUILD,'z'): /* size */ + if (s.size > 0) { + pr_err("size may only be specified once. Second value is %s.\n", optarg); + exit(2); + } + if (strcmp(optarg, "max") == 0) + s.size = MAX_SIZE; + else { + s.size = parse_size(optarg); + if (s.size == INVALID_SECTORS || s.size < 8) { + pr_err("invalid size: %s\n", optarg); + exit(2); + } + /* convert sectors to K */ + s.size /= 2; + } + continue; + + case O(GROW,'Z'): /* array size */ + if (array_size > 0) { + pr_err("array-size may only be specified once. Second value is %s.\n", optarg); + exit(2); + } + if (strcmp(optarg, "max") == 0) + array_size = MAX_SIZE; + else { + array_size = parse_size(optarg); + if (array_size == 0 || + array_size == INVALID_SECTORS) { + pr_err("invalid array size: %s\n", + optarg); + exit(2); + } + } + continue; + + case O(CREATE,DataOffset): + case O(GROW,DataOffset): + if (s.data_offset != INVALID_SECTORS) { + pr_err("data-offset may only be specified one. Second value is %s.\n", optarg); + exit(2); + } + if (mode == CREATE && strcmp(optarg, "variable") == 0) + s.data_offset = VARIABLE_OFFSET; + else + s.data_offset = parse_size(optarg); + if (s.data_offset == INVALID_SECTORS) { + pr_err("invalid data-offset: %s\n", + optarg); + exit(2); + } + continue; + + case O(GROW,'l'): + case O(CREATE,'l'): + case O(BUILD,'l'): /* set raid level*/ + if (s.level != UnSet) { + pr_err("raid level may only be set once. Second value is %s.\n", optarg); + exit(2); + } + s.level = map_name(pers, optarg); + if (s.level == UnSet) { + pr_err("invalid raid level: %s\n", + optarg); + exit(2); + } + if (s.level != 0 && s.level != LEVEL_LINEAR && + s.level != 1 && s.level != LEVEL_MULTIPATH && + s.level != LEVEL_FAULTY && s.level != 10 && + mode == BUILD) { + pr_err("Raid level %s not permitted with --build.\n", + optarg); + exit(2); + } + if (s.sparedisks > 0 && s.level < 1 && s.level >= -1) { + pr_err("raid level %s is incompatible with spare-devices setting.\n", + optarg); + exit(2); + } + ident.level = s.level; + continue; + + case O(GROW, 'p'): /* new layout */ + case O(GROW, Layout): + if (s.layout_str) { + pr_err("layout may only be sent once. Second value was %s\n", optarg); + exit(2); + } + s.layout_str = optarg; + /* 'Grow' will parse the value */ + continue; + + case O(CREATE,'p'): /* raid5 layout */ + case O(CREATE,Layout): + case O(BUILD,'p'): /* faulty layout */ + case O(BUILD,Layout): + if (s.layout != UnSet) { + pr_err("layout may only be sent once. Second value was %s\n", optarg); + exit(2); + } + switch(s.level) { + default: + pr_err("layout not meaningful for %s arrays.\n", + map_num_s(pers, s.level)); + exit(2); + case UnSet: + pr_err("raid level must be given before layout.\n"); + exit(2); + + case 0: + s.layout = map_name(r0layout, optarg); + if (s.layout == UnSet) { + pr_err("layout %s not understood for raid0.\n", + optarg); + exit(2); + } + break; + case 5: + s.layout = map_name(r5layout, optarg); + if (s.layout == UnSet) { + pr_err("layout %s not understood for raid5.\n", + optarg); + exit(2); + } + break; + case 6: + s.layout = map_name(r6layout, optarg); + if (s.layout == UnSet) { + pr_err("layout %s not understood for raid6.\n", + optarg); + exit(2); + } + break; + + case 10: + s.layout = parse_layout_10(optarg); + if (s.layout < 0) { + pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg); + exit(2); + } + break; + case LEVEL_FAULTY: + /* Faulty + * modeNNN + */ + s.layout = parse_layout_faulty(optarg); + if (s.layout == -1) { + pr_err("layout %s not understood for faulty.\n", + optarg); + exit(2); + } + break; + } + continue; + + case O(CREATE,AssumeClean): + case O(BUILD,AssumeClean): /* assume clean */ + case O(GROW,AssumeClean): + s.assume_clean = 1; + continue; + + case O(CREATE, WriteZeroes): + s.write_zeroes = 1; + continue; + + case O(GROW,'n'): + case O(CREATE,'n'): + case O(BUILD,'n'): /* number of raid disks */ + if (s.raiddisks) { + pr_err("raid-devices set twice: %d and %s\n", + s.raiddisks, optarg); + exit(2); + } + if (parse_num(&s.raiddisks, optarg) != 0 || s.raiddisks <= 0) { + pr_err("invalid number of raid devices: %s\n", + optarg); + exit(2); + } + ident.raid_disks = s.raiddisks; + continue; + case O(ASSEMBLE, Nodes): + case O(GROW, Nodes): + case O(CREATE, Nodes): + if (parse_num(&c.nodes, optarg) != 0 || c.nodes < 2) { + pr_err("clustered array needs two nodes at least: %s\n", + optarg); + exit(2); + } + continue; + case O(CREATE, ClusterName): + case O(ASSEMBLE, ClusterName): + c.homecluster = optarg; + if (strlen(c.homecluster) > 64) { + pr_err("Cluster name too big.\n"); + exit(2); + } + continue; + case O(CREATE,'x'): /* number of spare (eXtra) disks */ + if (s.sparedisks) { + pr_err("spare-devices set twice: %d and %s\n", + s.sparedisks, optarg); + exit(2); + } + if (s.level != UnSet && s.level <= 0 && s.level >= -1) { + pr_err("spare-devices setting is incompatible with raid level %d\n", + s.level); + exit(2); + } + if (parse_num(&s.sparedisks, optarg) != 0 || s.sparedisks < 0) { + pr_err("invalid number of spare-devices: %s\n", + optarg); + exit(2); + } + continue; + + case O(CREATE,'a'): + case O(CREATE,Auto): + case O(BUILD,'a'): + case O(BUILD,Auto): + case O(INCREMENTAL,'a'): + case O(INCREMENTAL,Auto): + case O(ASSEMBLE,'a'): + case O(ASSEMBLE,Auto): /* auto-creation of device node */ + c.autof = parse_auto(optarg, "--auto flag", 0); + continue; + case O(BUILD,'f'): /* force honouring '-n 1' */ + case O(BUILD,Force): /* force honouring '-n 1' */ + case O(GROW,'f'): /* ditto */ + case O(GROW,Force): /* ditto */ + case O(CREATE,'f'): /* force honouring of device list */ + case O(CREATE,Force): /* force honouring of device list */ + case O(ASSEMBLE,'f'): /* force assembly */ + case O(ASSEMBLE,Force): /* force assembly */ + case O(MISC,'f'): /* force zero */ + case O(MISC,Force): /* force zero */ + case O(MANAGE,Force): /* add device which is too large */ + c.force = 1; + continue; + /* now for the Assemble options */ + case O(ASSEMBLE, FreezeReshape): /* Freeze reshape during + * initrd phase */ + case O(INCREMENTAL, FreezeReshape): + c.freeze_reshape = 1; + continue; + case O(CREATE,'u'): /* uuid of array */ + case O(ASSEMBLE,'u'): /* uuid of array */ + if (ident.uuid_set) { + pr_err("uuid cannot be set twice. Second value %s.\n", optarg); + exit(2); + } + if (parse_uuid(optarg, ident.uuid)) + ident.uuid_set = 1; + else { + pr_err("Bad uuid: %s\n", optarg); + exit(2); + } + continue; + + case O(CREATE,'N'): + case O(ASSEMBLE,'N'): + case O(MISC,'N'): + if (mode == MISC && !c.subarray) { + pr_err("-N/--name only valid with --update-subarray in misc mode\n"); + exit(2); + } + + if (ident_set_name(&ident, optarg) != MDADM_STATUS_SUCCESS) + exit(2); + + continue; + + case O(ASSEMBLE,'m'): /* super-minor for array */ + case O(ASSEMBLE,SuperMinor): + if (ident.super_minor != UnSet) { + pr_err("super-minor cannot be set twice. Second value: %s.\n", optarg); + exit(2); + } + if (strcmp(optarg, "dev") == 0) + ident.super_minor = -2; + else if (parse_num(&ident.super_minor, optarg) != 0 || ident.super_minor < 0) { + pr_err("Bad super-minor number: %s.\n", optarg); + exit(2); + } + continue; + + case O(ASSEMBLE,'o'): + case O(MANAGE,'o'): + case O(CREATE,'o'): + c.readonly = 1; + continue; + + case O(ASSEMBLE,'U'): /* update the superblock */ + case O(MISC,'U'): { + enum update_opt print_mode = UOPT_HELP; + const char *error_addon = "update option"; + + if (c.update) { + pr_err("Can only update one aspect of superblock, both %s and %s given.\n", + map_num(update_options, c.update), optarg); + exit(2); + } + if (mode == MISC && !c.subarray) { + pr_err("Only subarrays can be updated in misc mode\n"); + exit(2); + } + + c.update = map_name(update_options, optarg); + + if (devmode == UpdateSubarray) { + print_mode = UOPT_SUBARRAY_ONLY; + error_addon = "update-subarray option"; + + if (c.update > UOPT_SUBARRAY_ONLY && c.update < UOPT_HELP) + c.update = UOPT_UNDEFINED; + } + + switch (c.update) { + case UOPT_UNDEFINED: + pr_err("'--update=%s' is invalid %s. ", + optarg, error_addon); + outf = stderr; + case UOPT_HELP: + if (!outf) + outf = stdout; + fprint_update_options(outf, print_mode); + exit(outf == stdout ? 0 : 2); + case UOPT_BYTEORDER: + if (ss) { + pr_err("must not set metadata type with --update=byteorder.\n"); + exit(2); + } + default: + break; + } + continue; + } + case O(MANAGE,'U'): + /* update=devicesize is allowed with --re-add */ + if (devmode != 'A') { + pr_err("--update in Manage mode only allowed with --re-add.\n"); + exit(1); + } + if (c.update) { + pr_err("Can only update one aspect of superblock, both %s and %s given.\n", + map_num(update_options, c.update), optarg); + exit(2); + } + c.update = map_name(update_options, optarg); + if (c.update != UOPT_DEVICESIZE && + c.update != UOPT_BBL && + c.update != UOPT_NO_BBL && + c.update != UOPT_FORCE_NO_BBL) { + pr_err("only 'devicesize', 'bbl', 'no-bbl', and 'force-no-bbl' can be updated with --re-add\n"); + exit(2); + } + continue; + + case O(INCREMENTAL,NoDegraded): + pr_err("--no-degraded is deprecated in Incremental mode\n"); + case O(ASSEMBLE,NoDegraded): /* --no-degraded */ + c.runstop = -1; /* --stop isn't allowed for --assemble, + * so we overload slightly */ + continue; + + case O(ASSEMBLE,'c'): + case O(ASSEMBLE,ConfigFile): + case O(INCREMENTAL, 'c'): + case O(INCREMENTAL, ConfigFile): + case O(MISC, 'c'): + case O(MISC, ConfigFile): + case O(MONITOR,'c'): + case O(MONITOR,ConfigFile): + case O(CREATE,ConfigFile): + if (configfile) { + pr_err("configfile cannot be set twice. Second value is %s.\n", optarg); + exit(2); + } + configfile = optarg; + set_conffile(configfile); + /* FIXME possibly check that config file exists. Even parse it */ + continue; + case O(ASSEMBLE,'s'): /* scan */ + case O(MISC,'s'): + case O(MONITOR,'s'): + case O(INCREMENTAL,'s'): + c.scan = 1; + continue; + + case O(MONITOR,'m'): /* mail address */ + case O(MONITOR,EMail): + if (mailaddr) + pr_err("only specify one mailaddress. %s ignored.\n", + optarg); + else + mailaddr = optarg; + continue; + + case O(MONITOR,'p'): /* alert program */ + case O(MONITOR,ProgramOpt): /* alert program */ + if (program) + pr_err("only specify one alter program. %s ignored.\n", + optarg); + else + program = optarg; + continue; + + case O(MONITOR,'r'): /* rebuild increments */ + case O(MONITOR,Increment): + if (parse_num(&increments, optarg) != 0 + || increments > 99 || increments < 1) { + pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n"); + exit(2); + } + continue; + + case O(MONITOR,'d'): /* delay in seconds */ + case O(GROW, 'd'): + case O(BUILD,'d'): /* delay for bitmap updates */ + case O(CREATE,'d'): + if (c.delay) + pr_err("only specify delay once. %s ignored.\n", optarg); + else if (parse_num(&c.delay, optarg) != 0 || c.delay < 1) { + pr_err("invalid delay: %s\n", optarg); + exit(2); + } + continue; + case O(MONITOR,'f'): /* daemonise */ + case O(MONITOR,Fork): + daemonise = 1; + continue; + case O(MONITOR,'i'): /* pid */ + if (pidfile) + pr_err("only specify one pid file. %s ignored.\n", + optarg); + else + pidfile = optarg; + continue; + case O(MONITOR,'1'): /* oneshot */ + oneshot = 1; + spare_sharing = 0; + continue; + case O(MONITOR,'t'): /* test */ + c.test = 1; + continue; + case O(MONITOR,'y'): /* log messages to syslog */ + openlog("mdadm", LOG_PID, SYSLOG_FACILITY); + dosyslog = 1; + continue; + case O(MONITOR, NoSharing): + spare_sharing = 0; + continue; + + /* now the general management options. Some are applicable + * to other modes. None have arguments. + */ + case O(GROW,'a'): + case O(GROW,Add): + case O(MANAGE,'a'): + case O(MANAGE,Add): /* add a drive */ + devmode = 'a'; + continue; + case O(MANAGE,AddSpare): /* add drive - never re-add */ + devmode = 'S'; + continue; + case O(MANAGE,AddJournal): /* add journal */ + if (s.journaldisks && (s.level < 4 || s.level > 6)) { + pr_err("--add-journal is only supported for RAID level 4/5/6.\n"); + exit(2); + } + devmode = 'j'; + continue; + case O(MANAGE,ReAdd): + devmode = 'A'; + continue; + case O(MANAGE,'r'): /* remove a drive */ + case O(MANAGE,Remove): + devmode = 'r'; + continue; + case O(MANAGE,'f'): /* set faulty */ + case O(MANAGE,Fail): + case O(INCREMENTAL,'f'): + case O(INCREMENTAL,Remove): + case O(INCREMENTAL,Fail): /* r for incremental is taken, use f + * even though we will both fail and + * remove the device */ + devmode = 'f'; + continue; + case O(MANAGE, ClusterConfirm): + devmode = 'c'; + continue; + case O(MANAGE,Replace): + /* Mark these devices for replacement */ + devmode = 'R'; + continue; + case O(MANAGE,With): + /* These are the replacements to use */ + if (devmode != 'R') { + pr_err("--with must follow --replace\n"); + exit(2); + } + devmode = 'W'; + continue; + case O(INCREMENTAL,'R'): + case O(MANAGE,'R'): + case O(ASSEMBLE,'R'): + case O(BUILD,'R'): + case O(CREATE,'R'): /* Run the array */ + if (c.runstop < 0) { + pr_err("Cannot both Stop and Run an array\n"); + exit(2); + } + c.runstop = 1; + continue; + case O(MANAGE,'S'): + if (c.runstop > 0) { + pr_err("Cannot both Run and Stop an array\n"); + exit(2); + } + c.runstop = -1; + continue; + case O(MANAGE,'t'): + c.test = 1; + continue; + + case O(MISC,'Q'): + case O(MISC,'D'): + case O(MISC,'E'): + case O(MISC,KillOpt): + case O(MISC,'R'): + case O(MISC,'S'): + case O(MISC,'X'): + case O(MISC, ExamineBB): + case O(MISC,'o'): + case O(MISC,'w'): + case O(MISC,'W'): + case O(MISC, WaitOpt): + case O(MISC, Waitclean): + case O(MISC, DetailPlatform): + case O(MISC, KillSubarray): + case O(MISC, UpdateSubarray): + case O(MISC, Dump): + case O(MISC, Restore): + case O(MISC ,Action): + if (opt == KillSubarray || opt == UpdateSubarray) { + if (c.subarray) { + pr_err("subarray can only be specified once\n"); + exit(2); + } + c.subarray = optarg; + } + if (opt == Action) { + if (c.action) { + pr_err("Only one --action can be specified\n"); + exit(2); + } + if (strcmp(optarg, "idle") == 0 || + strcmp(optarg, "frozen") == 0 || + strcmp(optarg, "check") == 0 || + strcmp(optarg, "repair") == 0) + c.action = optarg; + else { + pr_err("action must be one of idle, frozen, check, repair\n"); + exit(2); + } + } + if (devmode && devmode != opt && + (devmode == 'E' || + (opt == 'E' && devmode != 'Q'))) { + pr_err("--examine/-E cannot be given with "); + if (devmode == 'E') { + if (option_index >= 0) + fprintf(stderr, "--%s\n", + long_options[option_index].name); + else + fprintf(stderr, "-%c\n", opt); + } else if (isalpha(devmode)) + fprintf(stderr, "-%c\n", devmode); + else + fprintf(stderr, "previous option\n"); + exit(2); + } + devmode = opt; + if (opt == Dump || opt == Restore) { + if (dump_directory != NULL) { + pr_err("dump/restore directory specified twice: %s and %s\n", + dump_directory, optarg); + exit(2); + } + dump_directory = optarg; + } + continue; + case O(MISC, UdevRules): + if (devmode && devmode != opt) { + pr_err("--udev-rules must be the only option.\n"); + } else { + if (udev_filename) + pr_err("only specify one udev rule filename. %s ignored.\n", + optarg); + else + udev_filename = optarg; + } + devmode = opt; + continue; + case O(MISC,'t'): + c.test = 1; + continue; + + case O(MISC, Sparc22): + if (devmode != 'E') { + pr_err("--sparc2.2 only allowed with --examine\n"); + exit(2); + } + c.SparcAdjust = 1; + continue; + + case O(ASSEMBLE,'b'): /* here we simply set the bitmap file */ + case O(ASSEMBLE,Bitmap): + if (!optarg) { + pr_err("bitmap file needed with -b in --assemble mode\n"); + exit(2); + } + if (strcmp(optarg, "internal") == 0 || + strcmp(optarg, "clustered") == 0) { + pr_err("no need to specify --bitmap when assembling" + " arrays with internal or clustered bitmap\n"); + continue; + } + bitmap_fd = open(optarg, O_RDWR); + if (!*optarg || bitmap_fd < 0) { + pr_err("cannot open bitmap file %s: %s\n", optarg, strerror(errno)); + exit(2); + } + ident.bitmap_fd = bitmap_fd; /* for Assemble */ + continue; + + case O(ASSEMBLE, BackupFile): + case O(GROW, BackupFile): + /* Specify a file into which grow might place a backup, + * or from which assemble might recover a backup + */ + if (c.backup_file) { + pr_err("backup file already specified, rejecting %s\n", optarg); + exit(2); + } + c.backup_file = optarg; + continue; + + case O(GROW, Continue): + /* Continue interrupted grow + */ + grow_continue = 1; + continue; + case O(ASSEMBLE, InvalidBackup): + /* Acknowledge that the backupfile is invalid, but ask + * to continue anyway + */ + c.invalid_backup = 1; + continue; + + case O(BUILD,'b'): + case O(BUILD,Bitmap): + case O(CREATE,'b'): + case O(CREATE,Bitmap): /* here we create the bitmap */ + case O(GROW,'b'): + case O(GROW,Bitmap): + if (s.bitmap_file) { + pr_err("bitmap cannot be set twice. Second value: %s.\n", optarg); + exit(2); + } + if (strcmp(optarg, "internal") == 0 || + strcmp(optarg, STR_COMMON_NONE) == 0 || + strchr(optarg, '/') != NULL) { + s.bitmap_file = optarg; + continue; + } + if (strcmp(optarg, "clustered") == 0) { + s.bitmap_file = optarg; + /* Set the default number of cluster nodes + * to 4 if not already set by user + */ + if (c.nodes < 1) + c.nodes = 4; + continue; + } + /* probable typo */ + pr_err("bitmap file must contain a '/', or be 'internal', or be 'clustered', or 'none'\n" + " not '%s'\n", optarg); + exit(2); + + case O(GROW,BitmapChunk): + case O(BUILD,BitmapChunk): + case O(CREATE,BitmapChunk): /* bitmap chunksize */ + s.bitmap_chunk = parse_size(optarg); + if (s.bitmap_chunk == 0 || + s.bitmap_chunk == INVALID_SECTORS || + s.bitmap_chunk & (s.bitmap_chunk - 1)) { + pr_err("invalid bitmap chunksize: %s\n", + optarg); + exit(2); + } + s.bitmap_chunk = s.bitmap_chunk * 512; + continue; + + case O(GROW, WriteBehind): + case O(BUILD, WriteBehind): + case O(CREATE, WriteBehind): + s.write_behind = DEFAULT_MAX_WRITE_BEHIND; + if (optarg && + (parse_num(&s.write_behind, optarg) != 0 || + s.write_behind < 0 || s.write_behind > 16383)) { + pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", + optarg); + exit(2); + } + continue; + case O(INCREMENTAL, 'r'): + case O(INCREMENTAL, RebuildMapOpt): + rebuild_map = 1; + continue; + case O(INCREMENTAL, IncrementalPath): + remove_path = optarg; + continue; + case O(CREATE, WriteJournal): + if (s.journaldisks) { + pr_err("Please specify only one journal device for the array.\n"); + pr_err("Ignoring --write-journal %s...\n", optarg); + continue; + } + dv = xmalloc(sizeof(*dv)); + dv->devname = optarg; + dv->disposition = 'j'; /* WriteJournal */ + dv->used = 0; + dv->next = NULL; + *devlistend = dv; + devlistend = &dv->next; + devs_found++; + + s.journaldisks = 1; + continue; + case O(CREATE, 'k'): + case O(GROW, 'k'): + s.consistency_policy = map_name(consistency_policies, + optarg); + if (s.consistency_policy < CONSISTENCY_POLICY_RESYNC) { + pr_err("Invalid consistency policy: %s\n", + optarg); + exit(2); + } + continue; + } + /* We have now processed all the valid options. Anything else is + * an error + */ + if (option_index > 0) + pr_err(":option --%s not valid in %s mode\n", + long_options[option_index].name, + map_num_s(modes, mode)); + else + pr_err("option -%c not valid in %s mode\n", + opt, map_num_s(modes, mode)); + exit(2); + + } + + if (print_help) { + char *help_text; + if (print_help == 2) + help_text = OptionHelp; + else + help_text = mode_help[mode]; + if (help_text == NULL) + help_text = Help; + fputs(help_text,stdout); + exit(0); + } + + if (s.journaldisks) { + if (s.level < 4 || s.level > 6) { + pr_err("--write-journal is only supported for RAID level 4/5/6.\n"); + exit(2); + } + if (s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN && + s.consistency_policy != CONSISTENCY_POLICY_JOURNAL) { + pr_err("--write-journal is not supported with consistency policy: %s\n", + map_num_s(consistency_policies, s.consistency_policy)); + exit(2); + } + } + + if (mode == CREATE && + s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN) { + if (s.level <= 0) { + pr_err("--consistency-policy not meaningful with level %s.\n", + map_num_s(pers, s.level)); + exit(2); + } else if (s.consistency_policy == CONSISTENCY_POLICY_JOURNAL && + !s.journaldisks) { + pr_err("--write-journal is required for consistency policy: %s\n", + map_num_s(consistency_policies, s.consistency_policy)); + exit(2); + } else if (s.consistency_policy == CONSISTENCY_POLICY_PPL && + s.level != 5) { + pr_err("PPL consistency policy is only supported for RAID level 5.\n"); + exit(2); + } else if (s.consistency_policy == CONSISTENCY_POLICY_BITMAP && + (!s.bitmap_file || str_is_none(s.bitmap_file) == true)) { + pr_err("--bitmap is required for consistency policy: %s\n", + map_num_s(consistency_policies, s.consistency_policy)); + exit(2); + } else if (s.bitmap_file && + str_is_none(s.bitmap_file) == false && + s.consistency_policy != CONSISTENCY_POLICY_BITMAP && + s.consistency_policy != CONSISTENCY_POLICY_JOURNAL) { + pr_err("--bitmap is not compatible with consistency policy: %s\n", + map_num_s(consistency_policies, s.consistency_policy)); + exit(2); + } + } + + if (s.write_zeroes && !s.assume_clean) { + pr_info("Disk zeroing requested, setting --assume-clean to skip resync\n"); + s.assume_clean = 1; + } + + if (!mode && devs_found) { + mode = MISC; + devmode = 'Q'; + if (devlist->disposition == 0) + devlist->disposition = devmode; + } + if (!mode) { + fputs(Usage, stderr); + exit(2); + } + + /* Ok, got the option parsing out of the way + * hopefully it's mostly right but there might be some stuff + * missing + * + * That is mostly checked in the per-mode stuff but... + * + * For @,B,C and A without -s, the first device listed must be + * an md device. We check that here and open it. + */ + + if (mode == MANAGE || mode == BUILD || mode == CREATE || + mode == GROW || (mode == ASSEMBLE && ! c.scan)) { + struct stat stb; + int ret; + + if (devs_found < 1) { + pr_err("an md device must be given in this mode\n"); + exit(2); + } + if (ident_set_devname(&ident, devlist->devname) != MDADM_STATUS_SUCCESS) + exit(1); + + if ((int)ident.super_minor == -2 && c.autof) { + pr_err("--super-minor=dev is incompatible with --auto\n"); + exit(2); + } + if (mode == MANAGE || mode == GROW) { + mdfd = open_mddev(ident.devname, 1); + if (mdfd < 0) + exit(1); + + ret = fstat(mdfd, &stb); + if (ret) { + pr_err("fstat failed on %s.\n", ident.devname); + exit(1); + } + } else { + ret = stat(ident.devname, &stb); + if (ident.super_minor == -2 && ret != 0) { + pr_err("--super-minor=dev given, and listed device %s doesn't exist.\n", + ident.devname); + exit(1); + } + + if (!ret && !stat_is_md_dev(&stb)) { + pr_err("device %s exists but is not an md array.\n", ident.devname); + exit(1); + } + } + if (ident.super_minor == -2) + ident.super_minor = minor(stb.st_rdev); + } + + if (s.raiddisks) { + if (s.raiddisks == 1 && !c.force && s.level != LEVEL_FAULTY) { + pr_err("'1' is an unusual number of drives for an array, so it is probably\n" + " a mistake. If you really mean it you will need to specify --force before\n" + " setting the number of drives.\n"); + exit(2); + } + } + + if (c.homehost == NULL && c.require_homehost) + c.homehost = conf_get_homehost(&c.require_homehost); + if (c.homehost == NULL || strcasecmp(c.homehost, "") == 0) { + if (s_gethostname(sys_hostname, sizeof(sys_hostname)) == 0) { + c.homehost = sys_hostname; + } + } + if (c.homehost && + (!c.homehost[0] || strcasecmp(c.homehost, "") == 0)) { + c.homehost = NULL; + c.require_homehost = 0; + } + + rv = 0; + + set_hooks(); /* set hooks from libs */ + + if (c.homecluster == NULL && (c.nodes > 0)) { + c.homecluster = conf_get_homecluster(); + if (c.homecluster == NULL) + rv = get_cluster_name(&c.homecluster); + if (rv) { + pr_err("The md can't get cluster name\n"); + exit(1); + } + } + + if (c.update && c.update == UOPT_NODES && c.nodes == 0) { + pr_err("Please specify nodes number with --nodes\n"); + exit(1); + } + + if (c.backup_file && s.data_offset != INVALID_SECTORS) { + pr_err("--backup-file and --data-offset are incompatible\n"); + exit(2); + } + + if ((mode == MISC && devmode == 'E') || + (mode == MONITOR && spare_sharing == 0)) + /* Anyone may try this */; + else if (geteuid() != 0) { + pr_err("must be super-user to perform this action\n"); + exit(1); + } + + ident.autof = c.autof; + + if (c.scan && c.verbose < 2) + /* --scan implied --brief unless -vv */ + c.brief = 1; + + if (mode == CREATE) { + if (s.bitmap_file && strcmp(s.bitmap_file, "clustered") == 0) { + locked = cluster_get_dlmlock(); + if (locked != 1) + exit(1); + } + } else if (mode == MANAGE || mode == GROW || mode == INCREMENTAL) { + if (!md_get_array_info(mdfd, &array) && (devmode != 'c')) { + if (array.state & (1 << MD_SB_CLUSTERED)) { + locked = cluster_get_dlmlock(); + if (locked != 1) + exit(1); + } + } + } + + switch(mode) { + case MANAGE: + /* readonly, add/remove, readwrite, runstop */ + if (c.readonly > 0) + rv = Manage_ro(ident.devname, mdfd, c.readonly); + if (!rv && devs_found > 1) + rv = Manage_subdevs(ident.devname, mdfd, + devlist->next, c.verbose, + c.test, c.update, c.force); + if (!rv && c.readonly < 0) + rv = Manage_ro(ident.devname, mdfd, c.readonly); + if (!rv && c.runstop > 0) + rv = Manage_run(ident.devname, mdfd, &c); + if (!rv && c.runstop < 0) + rv = Manage_stop(ident.devname, mdfd, c.verbose, 0); + break; + case ASSEMBLE: + if (!c.scan && c.runstop == -1) { + pr_err("--no-degraded not meaningful without a --scan assembly.\n"); + exit(1); + } else if (devs_found == 1 && ident.uuid_set == 0 && + ident.super_minor == UnSet && ident.name[0] == 0 && + !c.scan) { + /* Only a device has been given, so get details from config file */ + struct mddev_ident *array_ident = conf_get_ident(ident.devname); + if (array_ident == NULL) { + pr_err("%s not identified in config file.\n", ident.devname); + rv |= 1; + if (mdfd >= 0) + close(mdfd); + } else { + if (array_ident->autof == 0) + array_ident->autof = c.autof; + rv |= Assemble(ss, ident.devname, array_ident, NULL, &c); + } + } else if (!c.scan) + rv = Assemble(ss, ident.devname, &ident, devlist->next, &c); + else if (devs_found > 0) { + if (c.update && devs_found > 1) { + pr_err("can only update a single array at a time\n"); + exit(1); + } + if (c.backup_file && devs_found > 1) { + pr_err("can only assemble a single array when providing a backup file.\n"); + exit(1); + } + for (dv = devlist; dv; dv = dv->next) { + struct mddev_ident *array_ident = conf_get_ident(dv->devname); + if (array_ident == NULL) { + pr_err("%s not identified in config file.\n", + dv->devname); + rv |= 1; + continue; + } + if (array_ident->autof == 0) + array_ident->autof = c.autof; + rv |= Assemble(ss, dv->devname, array_ident, + NULL, &c); + } + } else { + if (c.update) { + pr_err("--update not meaningful with a --scan assembly.\n"); + exit(1); + } + if (c.backup_file) { + pr_err("--backup_file not meaningful with a --scan assembly.\n"); + exit(1); + } + rv = scan_assemble(ss, &c, &ident); + } + + break; + case BUILD: + if (c.delay == 0) + c.delay = DEFAULT_BITMAP_DELAY; + if (s.write_behind && !s.bitmap_file) { + pr_err("write-behind mode requires a bitmap.\n"); + rv = 1; + break; + } + if (s.raiddisks == 0) { + pr_err("no raid-devices specified.\n"); + rv = 1; + break; + } + + if (s.bitmap_file) { + if (strcmp(s.bitmap_file, "internal") == 0 || + strcmp(s.bitmap_file, "clustered") == 0) { + pr_err("'internal' and 'clustered' bitmaps not supported with --build\n"); + rv |= 1; + break; + } + } + rv = Build(&ident, devlist->next, &s, &c); + break; + case CREATE: + if (c.delay == 0) + c.delay = DEFAULT_BITMAP_DELAY; + + if (c.nodes) { + if (!s.bitmap_file || + strcmp(s.bitmap_file, "clustered") != 0) { + pr_err("--nodes argument only compatible with --bitmap=clustered\n"); + rv = 1; + break; + } + + if (s.level != 1 && s.level != 10) { + pr_err("--bitmap=clustered is currently supported with raid1/10 only\n"); + rv = 1; + break; + } + if (s.level == 10 && !(is_near_layout_10(s.layout) || s.layout == UnSet)) { + pr_err("only near layout is supported with clustered raid10\n"); + rv = 1; + break; + } + } + + if (s.write_behind && !s.bitmap_file) { + pr_err("write-behind mode requires a bitmap.\n"); + rv = 1; + break; + } + if (s.raiddisks == 0) { + pr_err("no raid-devices specified.\n"); + rv = 1; + break; + } + + rv = Create(ss, &ident, devs_found - 1, devlist->next, &s, &c); + break; + case MISC: + if (devmode == 'E') { + if (devlist == NULL && !c.scan) { + pr_err("No devices to examine\n"); + exit(2); + } + if (devlist == NULL) + devlist = conf_get_devs(); + if (devlist == NULL) { + pr_err("No devices listed in %s\n", configfile?configfile:DefaultConfFile); + exit(1); + } + rv = Examine(devlist, &c, ss); + } else if (devmode == DetailPlatform) { + rv = Detail_Platform(ss ? ss->ss : NULL, ss ? c.scan : 1, + c.verbose, c.export, + devlist ? devlist->devname : NULL); + } else if (devlist == NULL) { + if (devmode == 'S' && c.scan) + rv = stop_scan(c.verbose); + else if ((devmode == 'D' || devmode == Waitclean) && + c.scan) + rv = misc_scan(devmode, &c); + else if (devmode == UdevRules) + rv = Write_rules(udev_filename); + else { + pr_err("No devices given.\n"); + exit(2); + } + } else + rv = misc_list(devlist, &ident, dump_directory, ss, &c); + break; + case MONITOR: + if (!devlist && !c.scan) { + pr_err("Cannot monitor: need --scan or at least one device\n"); + rv = 1; + break; + } + if (pidfile && !daemonise) { + pr_err("Cannot write a pid file when not in daemon mode\n"); + rv = 1; + break; + } + if (c.delay == 0) { + c.delay = conf_get_monitor_delay(); + if (!c.delay) + c.delay = 60; + } + rv = Monitor(devlist, mailaddr, program, + &c, daemonise, oneshot, + dosyslog, pidfile, increments, + spare_sharing); + break; + + case GROW: + if (array_size > 0) { + /* alway impose array size first, independent of + * anything else + * Do not allow level or raid_disks changes at the + * same time as that can be irreversibly destructive. + */ + struct mdinfo sra; + int err; + if (s.raiddisks || s.level != UnSet) { + pr_err("cannot change array size in same operation as changing raiddisks or level.\n" + " Change size first, then check that data is still intact.\n"); + rv = 1; + break; + } + if (sysfs_init(&sra, mdfd, NULL)) { + rv = 1; + break; + } + if (array_size == MAX_SIZE) + err = sysfs_set_str(&sra, NULL, "array_size", "default"); + else + err = sysfs_set_num(&sra, NULL, "array_size", array_size / 2); + if (err < 0) { + if (errno == E2BIG) + pr_err("--array-size setting is too large.\n"); + else + pr_err("current kernel does not support setting --array-size\n"); + rv = 1; + break; + } + } + if (devs_found > 1 && s.raiddisks == 0 && s.level == UnSet) { + /* must be '-a'. */ + if (s.size > 0 || s.chunk || + s.layout_str || s.bitmap_file) { + pr_err("--add cannot be used with other geometry changes in --grow mode\n"); + rv = 1; + break; + } + for (dv = devlist->next; dv; dv = dv->next) { + rv = Grow_Add_device(ident.devname, mdfd, dv->devname); + if (rv) + break; + } + } else if (s.bitmap_file) { + if (s.size > 0 || s.raiddisks || s.chunk || + s.layout_str || devs_found > 1) { + pr_err("--bitmap changes cannot be used with other geometry changes in --grow mode\n"); + rv = 1; + break; + } + if (c.delay == 0) + c.delay = DEFAULT_BITMAP_DELAY; + rv = Grow_addbitmap(ident.devname, mdfd, &c, &s); + } else if (grow_continue) + rv = Grow_continue_command(ident.devname, mdfd, c.backup_file, c.verbose); + else if (s.size > 0 || s.raiddisks || s.layout_str || + s.chunk != 0 || s.level != UnSet || + s.data_offset != INVALID_SECTORS) { + rv = Grow_reshape(ident.devname, mdfd, devlist->next, &c, &s); + } else if (s.consistency_policy != CONSISTENCY_POLICY_UNKNOWN) { + rv = Grow_consistency_policy(ident.devname, mdfd, &c, &s); + } else if (array_size == 0) + pr_err("no changes to --grow\n"); + break; + case INCREMENTAL: + if (rebuild_map) { + RebuildMap(); + } + if (c.scan) { + rv = 1; + if (devlist) { + pr_err("In --incremental mode, a device cannot be given with --scan.\n"); + break; + } + if (c.runstop <= 0) { + pr_err("--incremental --scan meaningless without --run.\n"); + break; + } + if (devmode == 'f') { + pr_err("--incremental --scan --fail not supported.\n"); + break; + } + rv = IncrementalScan(&c, NULL); + } + if (!devlist) { + if (!rebuild_map && !c.scan) { + pr_err("--incremental requires a device.\n"); + rv = 1; + } + break; + } + if (devmode == 'f') { + if (devlist->next) { + pr_err("'--incremental --fail' can only handle one device.\n"); + rv = 1; + break; + } + rv = IncrementalRemove(devlist->devname, remove_path, + c.verbose); + } else + rv = Incremental(devlist, &c, ss); + break; + case AUTODETECT: + autodetect(); + break; + } + if (ss) { + ss->ss->free_super(ss); + free(ss); + } + if (locked) + cluster_release_dlmlock(); + close_fd(&mdfd); + exit(rv); +} + +static int scan_assemble(struct supertype *ss, + struct context *c, + struct mddev_ident *ident) +{ + struct mddev_ident *a, *array_list = conf_get_ident(NULL); + struct mddev_dev *devlist = conf_get_devs(); + struct map_ent *map = NULL; + int cnt = 0; + int rv = 0; + int failures, successes; + + if (conf_verify_devnames(array_list)) { + pr_err("Duplicate MD device names in conf file were found.\n"); + return 1; + } + if (devlist == NULL) { + pr_err("No devices listed in conf file were found.\n"); + return 1; + } + for (a = array_list; a; a = a->next) { + a->assembled = 0; + if (a->autof == 0) + a->autof = c->autof; + } + if (map_lock(&map)) + pr_err("failed to get exclusive lock on mapfile\n"); + do { + failures = 0; + successes = 0; + rv = 0; + for (a = array_list; a; a = a->next) { + int r; + if (a->assembled) + continue; + if (a->devname && is_devname_ignore(a->devname) == true) + continue; + + r = Assemble(ss, a->devname, + a, NULL, c); + if (r == 0) { + a->assembled = 1; + successes++; + } else + failures++; + rv |= r; + cnt++; + } + } while (failures && successes); + if (c->homehost && cnt == 0) { + /* Maybe we can auto-assemble something. + * Repeatedly call Assemble in auto-assemble mode + * until it fails + */ + int rv2; + int acnt; + ident->autof = c->autof; + do { + struct mddev_dev *devlist = conf_get_devs(); + acnt = 0; + do { + rv2 = Assemble(ss, NULL, + ident, + devlist, c); + if (rv2 == 0) { + cnt++; + acnt++; + } + } while (rv2 != 2); + /* Incase there are stacked devices, we need to go around again */ + } while (acnt); + if (cnt == 0 && rv == 0) { + pr_err("No arrays found in config file or automatically\n"); + rv = 1; + } else if (cnt) + rv = 0; + } else if (cnt == 0 && rv == 0) { + pr_err("No arrays found in config file\n"); + rv = 1; + } + map_unlock(&map); + return rv; +} + +static int misc_scan(char devmode, struct context *c) +{ + /* apply --detail or --wait-clean to + * all devices in /proc/mdstat + */ + struct mdstat_ent *ms = mdstat_read(0, 1); + struct mdstat_ent *e; + struct map_ent *map = NULL; + int members; + int rv = 0; + + for (members = 0; members <= 1; members++) { + for (e = ms; e; e = e->next) { + char *name = NULL; + struct map_ent *me; + struct stat stb; + int member = e->metadata_version && + strncmp(e->metadata_version, + "external:/", 10) == 0; + if (members != member) + continue; + me = map_by_devnm(&map, e->devnm); + if (me && me->path && strcmp(me->path, "/unknown") != 0) + name = me->path; + if (name == NULL || stat(name, &stb) != 0) + name = get_md_name(e->devnm); + + if (!name) { + pr_err("cannot find device file for %s\n", + e->devnm); + continue; + } + if (devmode == 'D') + rv |= Detail(name, c); + else + rv |= WaitClean(name, c->verbose); + put_md_name(name); + map_free(map); + map = NULL; + } + } + free_mdstat(ms); + return rv; +} + +static int stop_scan(int verbose) +{ + /* apply --stop to all devices in /proc/mdstat */ + /* Due to possible stacking of devices, repeat until + * nothing more can be stopped + */ + int progress = 1, err; + int last = 0; + int rv = 0; + do { + struct mdstat_ent *ms = mdstat_read(0, 0); + struct mdstat_ent *e; + + if (!progress) last = 1; + progress = 0; err = 0; + for (e = ms; e; e = e->next) { + char *name = get_md_name(e->devnm); + int mdfd; + + if (!name) { + pr_err("cannot find device file for %s\n", + e->devnm); + continue; + } + mdfd = open_mddev(name, 1); + if (mdfd >= 0) { + if (Manage_stop(name, mdfd, verbose, !last)) + err = 1; + else + progress = 1; + close(mdfd); + } + + put_md_name(name); + } + free_mdstat(ms); + } while (!last && err); + if (err) + rv |= 1; + return rv; +} + +static int misc_list(struct mddev_dev *devlist, + struct mddev_ident *ident, + char *dump_directory, + struct supertype *ss, struct context *c) +{ + struct mddev_dev *dv; + int rv = 0; + + for (dv = devlist; dv; dv = (rv & 16) ? NULL : dv->next) { + int mdfd = -1; + + switch(dv->disposition) { + case 'D': + rv |= Detail(dv->devname, c); + continue; + case KillOpt: /* Zero superblock */ + if (ss) + rv |= Kill(dv->devname, ss, c->force, c->verbose,0); + else { + int v = c->verbose; + do { + rv |= Kill(dv->devname, NULL, c->force, v, 0); + v = -1; + } while (rv == 0); + rv &= ~4; + } + continue; + case 'Q': + rv |= Query(dv->devname); + continue; + case 'X': + rv |= ExamineBitmap(dv->devname, c->brief, ss); + continue; + case ExamineBB: + rv |= ExamineBadblocks(dv->devname, c->brief, ss); + continue; + case 'W': + case WaitOpt: + rv |= Wait(dv->devname); + continue; + case Waitclean: + rv |= WaitClean(dv->devname, c->verbose); + continue; + case KillSubarray: + rv |= Kill_subarray(dv->devname, c->subarray, c->verbose); + continue; + case UpdateSubarray: + if (!c->update) { + pr_err("-U/--update must be specified with --update-subarray\n"); + rv |= 1; + continue; + } + rv |= Update_subarray(dv->devname, c->subarray, + c->update, ident, c->verbose); + continue; + case Dump: + rv |= Dump_metadata(dv->devname, dump_directory, c, ss); + continue; + case Restore: + rv |= Restore_metadata(dv->devname, dump_directory, c, ss, + (dv == devlist && dv->next == NULL)); + continue; + case Action: + rv |= SetAction(dv->devname, c->action); + continue; + } + + if (dv->devname[0] != '/') + mdfd = open_dev(dv->devname); + if (dv->devname[0] == '/' || mdfd < 0) + mdfd = open_mddev(dv->devname, 1); + + if (mdfd >= 0) { + switch(dv->disposition) { + case 'R': + c->runstop = 1; + rv |= Manage_run(dv->devname, mdfd, c); + break; + case 'S': + if (c->scan) { + pr_err("--stop not meaningful with both a --scan assembly and a device name.\n"); + rv |= 1; + break; + } + rv |= Manage_stop(dv->devname, mdfd, c->verbose, 0); + break; + case 'o': + rv |= Manage_ro(dv->devname, mdfd, 1); + break; + case 'w': + rv |= Manage_ro(dv->devname, mdfd, -1); + break; + } + close(mdfd); + } else + rv |= 1; + } + return rv; +} + +int SetAction(char *dev, char *action) +{ + int fd = open(dev, O_RDONLY); + struct mdinfo mdi; + int retval; + + if (fd < 0) { + pr_err("Couldn't open %s: %s\n", dev, strerror(errno)); + return 1; + } + retval = sysfs_init(&mdi, fd, NULL); + close(fd); + if (retval) { + pr_err("%s is no an md array\n", dev); + return 1; + } + + if (sysfs_set_str(&mdi, NULL, "sync_action", action) < 0) { + pr_err("Count not set action for %s to %s: %s\n", + dev, action, strerror(errno)); + return 1; + } + return 0; +} -- cgit v1.2.3