/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Neil Brown
- * Email: <neilb@cse.unsw.edu.au>
- * Paper: Neil Brown
- * School of Computer Science and Engineering
- * The University of New South Wales
- * Sydney, 2052
- * Australia
+ * Email: <neilb@suse.de>
*/
#include "mdadm.h"
* with a key word, and not be indented, or must start with a
* non-key-word and must be indented.
*
- * Keywords are DEVICE and ARRAY
+ * Keywords are DEVICE and ARRAY ... and several others.
* DEV{ICE} introduces some devices that might contain raid components.
* e.g.
* DEV style=0 /dev/sda* /dev/hd*
char DefaultConfFile[] = CONFFILE;
char DefaultAltConfFile[] = CONFFILE2;
-enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev, Homehost, LTEnd };
+enum linetype { Devices, Array, Mailaddr, Mailfrom, Program, CreateDev,
+ Homehost, AutoMode, Policy, PartPolicy, LTEnd };
char *keywords[] = {
[Devices] = "devices",
[Array] = "array",
[Program] = "program",
[CreateDev]= "create",
[Homehost] = "homehost",
+ [AutoMode] = "auto",
+ [Policy] = "policy",
+ [PartPolicy]="part-policy",
[LTEnd] = NULL
};
char *name;
} *cdevlist = NULL;
-mddev_dev_t load_partitions(void)
+struct mddev_dev *load_partitions(void)
{
FILE *f = fopen("/proc/partitions", "r");
char buf[1024];
- mddev_dev_t rv = NULL;
+ struct mddev_dev *rv = NULL;
if (f == NULL) {
fprintf(stderr, Name ": cannot open /proc/partitions\n");
return NULL;
while (fgets(buf, 1024, f)) {
int major, minor;
char *name, *mp;
- mddev_dev_t d;
+ struct mddev_dev *d;
buf[1023] = '\0';
if (buf[0] != ' ')
return rv;
}
+struct mddev_dev *load_containers(void)
+{
+ struct mdstat_ent *mdstat = mdstat_read(1, 0);
+ struct mdstat_ent *ent;
+ struct mddev_dev *d;
+ struct mddev_dev *rv = NULL;
+
+ if (!mdstat)
+ return NULL;
+
+ for (ent = mdstat; ent; ent = ent->next)
+ if (ent->metadata_version &&
+ strncmp(ent->metadata_version, "external:", 9) == 0 &&
+ !is_subarray(&ent->metadata_version[9])) {
+ d = malloc(sizeof(*d));
+ if (!d)
+ continue;
+ if (asprintf(&d->devname, "/dev/%s", ent->dev) < 0) {
+ free(d);
+ continue;
+ }
+ d->next = rv;
+ d->used = 0;
+ rv = d;
+ }
+ free_mdstat(mdstat);
+
+ return rv;
+}
+
struct createinfo createinfo = {
.autof = 2, /* by default, create devices with standard names */
.symlinks = 1,
struct conf_dev *cd;
for (w=dl_next(line); w != line; w=dl_next(w)) {
- if (w[0] == '/' || strcasecmp(w, "partitions") == 0) {
+ if (w[0] == '/' || strcasecmp(w, "partitions") == 0 ||
+ strcasecmp(w, "containers") == 0) {
cd = malloc(sizeof(*cd));
cd->name = strdup(w);
cd->next = cdevlist;
}
}
-mddev_ident_t mddevlist = NULL;
-mddev_ident_t *mddevlp = &mddevlist;
+struct mddev_ident *mddevlist = NULL;
+struct mddev_ident **mddevlp = &mddevlist;
+
+static int is_number(char *w)
+{
+ /* check if there are 1 or more digits and nothing else */
+ int digits = 0;
+ while (*w && isdigit(*w)) {
+ digits++;
+ w++;
+ }
+ return (digits && ! *w);
+}
void arrayline(char *line)
{
char *w;
- struct mddev_ident_s mis;
- mddev_ident_t mi;
+ struct mddev_ident mis;
+ struct mddev_ident *mi;
mis.uuid_set = 0;
mis.super_minor = UnSet;
mis.member = NULL;
for (w=dl_next(line); w!=line; w=dl_next(w)) {
- if (w[0] == '/') {
- if (mis.devname)
- fprintf(stderr, Name ": only give one device per ARRAY line: %s and %s\n",
- mis.devname, w);
- else mis.devname = w;
+ if (w[0] == '/' || strchr(w, '=') == NULL) {
+ /* This names the device, or is '<ignore>'.
+ * The rules match those in create_mddev.
+ * 'w' must be:
+ * /dev/md/{anything}
+ * /dev/mdNN
+ * /dev/md_dNN
+ * <ignore>
+ * or anything that doesn't start '/' or '<'
+ */
+ if (strcasecmp(w, "<ignore>") == 0 ||
+ strncmp(w, "/dev/md/", 8) == 0 ||
+ (w[0] != '/' && w[0] != '<') ||
+ (strncmp(w, "/dev/md", 7) == 0 &&
+ is_number(w+7)) ||
+ (strncmp(w, "/dev/md_d", 9) == 0 &&
+ is_number(w+9))
+ ) {
+ /* This is acceptable */;
+ if (mis.devname)
+ fprintf(stderr, Name ": only give one "
+ "device per ARRAY line: %s and %s\n",
+ mis.devname, w);
+ else
+ mis.devname = w;
+ }else {
+ fprintf(stderr, Name ": %s is an invalid name for "
+ "an md device - ignored.\n", w);
+ }
} else if (strncasecmp(w, "uuid=", 5)==0 ) {
if (mis.uuid_set)
fprintf(stderr, Name ": only specify uuid once, %s ignored.\n",
w);
else {
char *endptr;
- mis.super_minor= strtol(w+12, &endptr, 10);
- if (w[12]==0 || endptr[0]!=0 || mis.super_minor < 0) {
+ int minor = strtol(w+12, &endptr, 10);
+
+ if (w[12]==0 || endptr[0]!=0 || minor < 0)
fprintf(stderr, Name ": invalid super-minor number: %s\n",
w);
- mis.super_minor = UnSet;
- }
+ else
+ mis.super_minor = minor;
}
} else if (strncasecmp(w, "name=", 5)==0) {
if (mis.name[0])
w);
}
}
- if (mis.uuid_set == 0 && mis.devices == NULL && mis.super_minor == UnSet && mis.name[0] == 0)
+ if (mis.uuid_set == 0 && mis.devices == NULL &&
+ mis.super_minor == UnSet && mis.name[0] == 0 &&
+ (mis.container == NULL || mis.member == NULL))
fprintf(stderr, Name ": ARRAY line %s has no identity information.\n", mis.devname);
else {
mi = malloc(sizeof(*mi));
else {
char *t = NULL;
- if (asprintf(&t, "%s %s", alert_mail_from, w) > 0) {
+ if (xasprintf(&t, "%s %s", alert_mail_from, w) > 0) {
free(alert_mail_from);
alert_mail_from = t;
}
}
static char *home_host = NULL;
+static int require_homehost = 1;
void homehostline(char *line)
{
char *w;
for (w=dl_next(line); w != line ; w=dl_next(w)) {
- if (home_host == NULL)
+ if (strcasecmp(w, "<ignore>")==0)
+ require_homehost = 0;
+ else if (home_host == NULL)
home_host = strdup(w);
else
fprintf(stderr, Name ": excess host name on HOMEHOST line: %s - ignored\n",
}
}
+char auto_yes[] = "yes";
+char auto_no[] = "no";
+char auto_homehost[] = "homehost";
+
+static int auto_seen = 0;
+void autoline(char *line)
+{
+ char *w;
+ char *seen;
+ int super_cnt;
+ char *dflt = auto_yes;
+ int homehost = 0;
+ int i;
+
+ if (auto_seen) {
+ fprintf(stderr, Name ": AUTO line may only be give once."
+ " Subsequent lines ignored\n");
+ return;
+ }
+ /* Parse the 'auto' line creating policy statements for the 'auto' policy.
+ *
+ * The default is 'yes' but the 'auto' line might over-ride that.
+ * Words in the line are processed in order with the first
+ * match winning.
+ * word can be:
+ * +version - that version can be assembled
+ * -version - that version cannot be auto-assembled
+ * yes or +all - any other version can be assembled
+ * no or -all - no other version can be assembled.
+ * homehost - any array associated by 'homehost' to this
+ * host can be assembled.
+ *
+ * Thus:
+ * +ddf -0.90 homehost -all
+ * will auto-assemble any ddf array, no 0.90 array, and
+ * any other array (imsm, 1.x) if and only if it is identified
+ * as belonging to this host.
+ *
+ * We translate that to policy by creating 'auto=yes' when we see
+ * a '+version' line, 'auto=no' if we see '-version' before 'homehost',
+ * or 'auto=homehost' if we see '-version' after 'homehost'.
+ * When we see yes, no, +all or -all we stop an any version that hasn't
+ * been seen gets an appropriate auto= entry.
+ */
+
+ for (super_cnt = 0; superlist[super_cnt]; super_cnt++)
+ ;
+ seen = calloc(super_cnt, 1);
+
+ for (w = dl_next(line); w != line ; w = dl_next(w)) {
+ char *val;
+
+ if (strcasecmp(w, "yes") == 0) {
+ dflt = auto_yes;
+ break;
+ }
+ if (strcasecmp(w, "no") == 0) {
+ if (homehost)
+ dflt = auto_homehost;
+ else
+ dflt = auto_no;
+ break;
+ }
+ if (strcasecmp(w, "homehost") == 0) {
+ homehost = 1;
+ continue;
+ }
+ if (w[0] == '+')
+ val = auto_yes;
+ else if (w[0] == '-') {
+ if (homehost)
+ val = auto_homehost;
+ else
+ val = auto_no;
+ } else
+ continue;
+
+ if (strcasecmp(w+1, "all") == 0) {
+ dflt = val;
+ break;
+ }
+ for (i = 0; superlist[i]; i++) {
+ const char *version = superlist[i]->name;
+ if (strcasecmp(w+1, version) == 0)
+ break;
+ /* 1 matches 1.x, 0 matches 0.90 */
+ if (version[1] == '.' &&
+ strlen(w+1) == 1 &&
+ w[1] == version[0])
+ break;
+ /* 1.anything matches 1.x */
+ if (strcmp(version, "1.x") == 0 &&
+ strncmp(w+1, "1.", 2) == 0)
+ break;
+ }
+ if (superlist[i] == NULL)
+ /* ignore this word */
+ continue;
+ if (seen[i])
+ /* already know about this metadata */
+ continue;
+ policy_add(rule_policy, pol_auto, val, pol_metadata, superlist[i]->name, NULL);
+ seen[i] = 1;
+ }
+ for (i = 0; i < super_cnt; i++)
+ if (!seen[i])
+ policy_add(rule_policy, pol_auto, dflt, pol_metadata, superlist[i]->name, NULL);
+}
int loaded = 0;
case Homehost:
homehostline(line);
break;
+ case AutoMode:
+ autoline(line);
+ break;
+ case Policy:
+ policyline(line, rule_policy);
+ break;
+ case PartPolicy:
+ policyline(line, rule_part);
+ break;
default:
fprintf(stderr, Name ": Unknown keyword %s\n", line);
}
return alert_program;
}
-char *conf_get_homehost(void)
+char *conf_get_homehost(int *require_homehostp)
{
load_conffile();
+ if (require_homehostp)
+ *require_homehostp = require_homehost;
return home_host;
}
return &createinfo;
}
-mddev_ident_t conf_get_ident(char *dev)
+struct mddev_ident *conf_get_ident(char *dev)
{
- mddev_ident_t rv;
+ struct mddev_ident *rv;
load_conffile();
rv = mddevlist;
while (dev && rv && (rv->devname == NULL
- || strcmp(dev, rv->devname)!=0))
+ || !devname_matches(dev, rv->devname)))
rv = rv->next;
return rv;
}
-mddev_dev_t conf_get_devs()
+static void append_dlist(struct mddev_dev **dlp, struct mddev_dev *list)
+{
+ while (*dlp)
+ dlp = &(*dlp)->next;
+ *dlp = list;
+}
+
+struct mddev_dev *conf_get_devs()
{
glob_t globbuf;
struct conf_dev *cd;
int flags = 0;
- static mddev_dev_t dlist = NULL;
+ static struct mddev_dev *dlist = NULL;
unsigned int i;
while (dlist) {
- mddev_dev_t t = dlist;
+ struct mddev_dev *t = dlist;
dlist = dlist->next;
free(t->devname);
free(t);
load_conffile();
- if (cdevlist == NULL)
- /* default to 'partitions */
+ if (cdevlist == NULL) {
+ /* default to 'partitions' and 'containers' */
dlist = load_partitions();
+ append_dlist(&dlist, load_containers());
+ }
for (cd=cdevlist; cd; cd=cd->next) {
- if (strcasecmp(cd->name, "partitions")==0 && dlist == NULL)
- dlist = load_partitions();
+ if (strcasecmp(cd->name, "partitions")==0)
+ append_dlist(&dlist, load_partitions());
+ else if (strcasecmp(cd->name, "containers")==0)
+ append_dlist(&dlist, load_containers());
else {
glob(cd->name, flags, NULL, &globbuf);
flags |= GLOB_APPEND;
}
if (flags & GLOB_APPEND) {
for (i=0; i<globbuf.gl_pathc; i++) {
- mddev_dev_t t = malloc(sizeof(*t));
+ struct mddev_dev *t = malloc(sizeof(*t));
t->devname = strdup(globbuf.gl_pathv[i]);
t->next = dlist;
t->used = 0;
return 0;
}
+int conf_test_metadata(const char *version, struct dev_policy *pol, int is_homehost)
+{
+ /* If anyone said 'yes', that sticks.
+ * else if homehost applies, use that
+ * else if there is a 'no', say 'no'.
+ * else 'yes'.
+ */
+ struct dev_policy *p;
+ int no=0, found_auto=0;
+ load_conffile();
+
+ pol = pol_find(pol, pol_auto);
+ pol_for_each(p, pol, version) {
+ if (strcmp(p->value, "yes") == 0)
+ return 1;
+ if (strcmp(p->value, "auto") == 0)
+ found_auto = 1;
+ if (strcmp(p->value, "no") == 0)
+ no = 1;
+ }
+ if (is_homehost && found_auto)
+ return 1;
+ if (no)
+ return 0;
+ return 1;
+}
int match_oneof(char *devices, char *devname)
{
* matches devname
*/
-
while (devices && *devices) {
char patn[1024];
char *p = devices;
}
return 0;
}
+
+int devname_matches(char *name, char *match)
+{
+ /* See if the given array name matches the
+ * given match from config file.
+ *
+ * First strip and /dev/md/ or /dev/, then
+ * see if there might be a numeric match of
+ * mdNN with NN
+ * then just strcmp
+ */
+ if (strncmp(name, "/dev/md/", 8) == 0)
+ name += 8;
+ else if (strncmp(name, "/dev/", 5) == 0)
+ name += 5;
+
+ if (strncmp(match, "/dev/md/", 8) == 0)
+ match += 8;
+ else if (strncmp(match, "/dev/", 5) == 0)
+ match += 5;
+
+
+ if (strncmp(name, "md", 2) == 0 &&
+ isdigit(name[2]))
+ name += 2;
+ if (strncmp(match, "md", 2) == 0 &&
+ isdigit(match[2]))
+ match += 2;
+
+ return (strcmp(name, match) == 0);
+}
+
+int conf_name_is_free(char *name)
+{
+ /* Check if this name is already take by an ARRAY entry in
+ * the config file.
+ * It can be taken either by a match on devname, name, or
+ * even super-minor.
+ */
+ struct mddev_ident *dev;
+
+ load_conffile();
+ for (dev = mddevlist; dev; dev = dev->next) {
+ char nbuf[100];
+ if (dev->devname && devname_matches(name, dev->devname))
+ return 0;
+ if (dev->name[0] && devname_matches(name, dev->name))
+ return 0;
+ sprintf(nbuf, "%d", dev->super_minor);
+ if (dev->super_minor != UnSet &&
+ devname_matches(name, nbuf))
+ return 0;
+ }
+ return 1;
+}
+
+struct mddev_ident *conf_match(struct mdinfo *info, struct supertype *st)
+{
+ struct mddev_ident *array_list, *match;
+ int verbose = 0;
+ char *devname = NULL;
+ array_list = conf_get_ident(NULL);
+ match = NULL;
+ for (; array_list; array_list = array_list->next) {
+ if (array_list->uuid_set &&
+ same_uuid(array_list->uuid, info->uuid, st->ss->swapuuid)
+ == 0) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": UUID differs from %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (array_list->name[0] &&
+ strcasecmp(array_list->name, info->name) != 0) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": Name differs from %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (array_list->devices && devname &&
+ !match_oneof(array_list->devices, devname)) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": Not a listed device for %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (array_list->super_minor != UnSet &&
+ array_list->super_minor != info->array.md_minor) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": Different super-minor to %s.\n",
+ array_list->devname);
+ continue;
+ }
+ if (!array_list->uuid_set &&
+ !array_list->name[0] &&
+ !array_list->devices &&
+ array_list->super_minor == UnSet) {
+ if (verbose >= 2 && array_list->devname)
+ fprintf(stderr, Name
+ ": %s doesn't have any identifying information.\n",
+ array_list->devname);
+ continue;
+ }
+ /* FIXME, should I check raid_disks and level too?? */
+
+ if (match) {
+ if (verbose >= 0) {
+ if (match->devname && array_list->devname)
+ fprintf(stderr, Name
+ ": we match both %s and %s - cannot decide which to use.\n",
+ match->devname, array_list->devname);
+ else
+ fprintf(stderr, Name
+ ": multiple lines in mdadm.conf match\n");
+ }
+ return NULL;
+ }
+ match = array_list;
+ }
+ return match;
+}
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