/*
- * mdctl - manage Linux "md" devices aka RAID arrays.
+ * mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
*
*
* This program is free software; you can redistribute it and/or modify
* Australia
*/
-#include "mdctl.h"
-#include "md_p.h"
+#include "mdadm.h"
#include "md_u.h"
+#include "md_p.h"
int Assemble(char *mddev, int mdfd,
- int uuid[4], int uuidset,
- char *conffile, int scan,
- int subdevs, char **subdev,
+ mddev_ident_t ident, char *conffile,
+ mddev_dev_t devlist,
int readonly, int runstop,
+ char *update,
int verbose, int force)
{
/*
- * The task of Assemble is to submit a
+ * The task of Assemble is to find a collection of
+ * devices that should (according to their superblocks)
+ * form an array, and to give this collection to the MD driver.
+ * In Linux-2.4 and later, this involves submitting a
* SET_ARRAY_INFO ioctl with no arg - to prepare
* the array - and then submit a number of
* ADD_NEW_DISK ioctls to add disks into
*
* If !uuidset and scan, look in conf-file for uuid
* If not found, give up
- * If !subdevs and scan and uuidset, get list of devs from conf-file
+ * If !devlist and scan and uuidset, get list of devs from conf-file
*
* For each device:
* Check superblock - discard if bad
* Check uuid (set if we don't have one) - discard if no match
- * Check superblock similarity if we have a superbloc - discard if different
+ * Check superblock similarity if we have a superblock - discard if different
* Record events, devicenum, utime
* This should give us a list of devices for the array
* We should collect the most recent event and utime numbers
int old_linux = 0;
int vers;
mdu_array_info_t array;
- mddev_dev_t devlist = NULL;
mdp_super_t first_super, super;
struct {
char *devname;
- int major, minor;
+ unsigned int major, minor;
+ unsigned int oldmajor, oldminor;
long long events;
time_t utime;
int uptodate;
- } devices[MD_SB_DISKS];
- int best[MD_SB_DISKS]; /* indexed by raid_disk */
- int devcnt = 0, okcnt;
- int i;
+ int state;
+ int raid_disk;
+ } *devices;
+ int *best = NULL; /* indexed by raid_disk */
+ unsigned int bestcnt = 0;
+ int devcnt = 0;
+ unsigned int okcnt, sparecnt;
+ unsigned int req_cnt;
+ unsigned int i;
int most_recent = 0;
+ int chosen_drive;
+ int change = 0;
+ int inargv = 0;
+ int start_partial_ok = force || devlist==NULL;
+ unsigned int num_devs;
+ mddev_dev_t tmpdev;
- if (!mddev && !scan) {
- fputs("mdctl: internal error - Assemble called with no devie or scan\n", stderr);
- return 1;
- }
- if (!mddev) {
- mddev_uuid_t device_list;
- int found = 0;
- device_list = conf_get_uuids(conffile);
- if (!device_list) {
- fprintf(stderr, "mdctl: No devices found in config file\n");
- return 1;
- }
- while (device_list) {
- if (!uuidset || same_uuid(device_list->uuid,uuid)) {
- mdfd = open(device_list->devname, O_RDONLY, 0);
- if (mdfd < 0) {
- fprintf(stderr,
- "mdctl: error opening %s: %s\n",
- device_list->devname,
- strerror(errno));
- continue;
- }
- if (Assemble(device_list->devname, mdfd,
- device_list->uuid, 1,
- conffile, 1,
- subdevs, subdev,
- readonly, runstop, verbose, force)==0)
- found++;
- close(mdfd);
- }
- device_list = device_list->next;
- }
- if (found)
- return 0;
- fprintf(stderr,"mdctl: Did not successful Assemble any devices\n");
- return 1;
- }
-
- /*
- * Ok, we have an mddev, check it out
- */
vers = md_get_version(mdfd);
if (vers <= 0) {
- fprintf(stderr, "mdctl: %s appears not to be an md device.\n");
+ fprintf(stderr, Name ": %s appears not to be an md device.\n", mddev);
return 1;
}
- if (vers < (90<<8)) {
- fprintf(stderr, "mdctl: Assemble requires driver version 0.90.0 or later.\n"
- " Upgrade your kernel or try --Build\n");
+ if (vers < 9000) {
+ fprintf(stderr, Name ": Assemble requires driver version 0.90.0 or later.\n"
+ " Upgrade your kernel or try --build\n");
return 1;
}
- if (get_linux_version() < 0x020400)
+ if (get_linux_version() < 2004000)
old_linux = 1;
if (ioctl(mdfd, GET_ARRAY_INFO, &array)>=0) {
- fprintf(stderr, "mdctl: device %s already active - cannot assemble it\n",
+ fprintf(stderr, Name ": device %s already active - cannot assemble it\n",
mddev);
return 1;
}
ioctl(mdfd, STOP_ARRAY, NULL); /* just incase it was started but has no content */
/*
- * We have a valid mddev, check out uuid
+ * If any subdevs are listed, then any that don't
+ * match ident are discarded. Remainder must all match and
+ * become the array.
+ * If no subdevs, then we scan all devices in the config file, but
+ * there must be something in the identity
*/
- if (!uuidset && scan) {
- /* device must be listed with uuid in conf file */
- mddev_uuid_t device_list;
- device_list = conf_get_uuids(conffile);
- while (device_list &&
- strcmp(device_list->devname, mddev) != 0)
- device_list = device_list->next;
- if (!device_list) {
- fprintf(stderr, "mdctl: --scan set and no uuid found for %s in config file.\n",
- mddev);
- return 1;
- }
- /* the uuid is safe until next call to conf_get_uuids */
- uuid = device_list->uuid;
- uuidset = 1;
+ if (!devlist &&
+ ident->uuid_set == 0 &&
+ ident->super_minor < 0 &&
+ ident->devices == NULL) {
+ fprintf(stderr, Name ": No identity information available for %s - cannot assemble.\n",
+ mddev);
+ return 1;
}
-
- /* Now to start looking at devices.
- * If no devices were given, but a uuid is available and
- * --scan was set, then we should scan all devices listed in the
- * config file
- *
- */
- if (subdevs==0 && scan && uuidset)
+ if (devlist == NULL)
devlist = conf_get_devs(conffile);
+ else inargv = 1;
- if (subdevs == 0 && devlist == NULL) {
- fprintf(stderr, "mdctl: no devices given for %s\n", mddev);
- return 1;
+ tmpdev = devlist; num_devs = 0;
+ while (tmpdev) {
+ num_devs++;
+ tmpdev = tmpdev->next;
}
- /* now for each device */
+ best = malloc(num_devs * sizeof(*best));
+ devices = malloc(num_devs * sizeof(*devices));
+
first_super.md_magic = 0;
- for (i=0; i<MD_SB_DISKS; i++)
+ for (i=0; i<num_devs; i++)
best[i] = -1;
- while (subdevs || devlist) {
+ if (verbose)
+ fprintf(stderr, Name ": looking for devices for %s\n",
+ mddev);
+
+ while ( devlist) {
char *devname;
int this_uuid[4];
int dfd;
struct stat stb;
- int inargv;
- if (subdevs) {
- devname = *subdev++;
- subdevs--;
- inargv=1;
- } else {
- devname = devlist->devname;
- devlist = devlist->next;
- inargv=0;
- }
+ int havesuper=0;
+ devname = devlist->devname;
+ devlist = devlist->next;
+
+ if (ident->devices &&
+ !match_oneof(ident->devices, devname)) {
+ if (inargv || verbose)
+ fprintf(stderr, Name ": %s is not one of %s\n", devname, ident->devices);
+ continue;
+ }
+
dfd = open(devname, O_RDONLY, 0);
if (dfd < 0) {
if (inargv || verbose)
- fprintf(stderr, "mdctl: cannot open device %s: %s\n",
+ fprintf(stderr, Name ": cannot open device %s: %s\n",
devname, strerror(errno));
- continue;
+ } else if (fstat(dfd, &stb)< 0) {
+ /* Impossible! */
+ fprintf(stderr, Name ": fstat failed for %s: %s\n",
+ devname, strerror(errno));
+ close(dfd);
+ } else if ((stb.st_mode & S_IFMT) != S_IFBLK) {
+ fprintf(stderr, Name ": %s is not a block device.\n",
+ devname);
+ close(dfd);
+ } else if (load_super(dfd, &super)) {
+ if (inargv || verbose)
+ fprintf( stderr, Name ": no RAID superblock on %s\n",
+ devname);
+ close(dfd);
+ } else {
+ havesuper =1;
+ uuid_from_super(this_uuid, &super);
+ close(dfd);
}
- if (fstat(dfd, &stb)< 0) {
- /* Impossible! */
- fprintf(stderr, "mdctl: fstat failed for %s: %s\n",
- devname, strerror(errno));
- close(dfd);
- continue;
+
+ if (ident->uuid_set &&
+ (!havesuper || same_uuid(this_uuid, ident->uuid)==0)) {
+ if (inargv || verbose)
+ fprintf(stderr, Name ": %s has wrong uuid.\n",
+ devname);
+ continue;
}
- if ((stb.st_mode & S_IFMT) != S_IFBLK) {
- fprintf(stderr, "mdctl: %d is not a block device.\n",
- devname);
- close(dfd);
- continue;
+ if (ident->super_minor != UnSet &&
+ (!havesuper || ident->super_minor != super.md_minor)) {
+ if (inargv || verbose)
+ fprintf(stderr, Name ": %s has wrong super-minor.\n",
+ devname);
+ continue;
}
- if (load_super(dfd, &super)) {
+ if (ident->level != UnSet &&
+ (!havesuper|| ident->level != (int)super.level)) {
if (inargv || verbose)
- fprintf( stderr, "mdctl: no RAID superblock on %s\n",
- devname);
- close(dfd);
+ fprintf(stderr, Name ": %s has wrong raid level.\n",
+ devname);
continue;
}
- close(dfd);
- if (compare_super(&first_super, &super)) {
+ if (ident->raid_disks != UnSet &&
+ (!havesuper || ident->raid_disks!= super.raid_disks)) {
if (inargv || verbose)
- fprintf(stderr, "mdctl: superblock on %s doesn't match\n",
+ fprintf(stderr, Name ": %s requires wrong number of drives.\n",
devname);
continue;
}
- if (uuidset) {
- uuid_from_super(this_uuid, &first_super);
- if (!same_uuid(this_uuid, uuid)) {
- if (inargv || verbose)
- fprintf(stderr, "mdctl: %s has wrong uuid.\n",
- devname);
- continue;
- }
- } else {
- uuid_from_super(uuid, &first_super);
- uuidset = 1;
+
+ /* If we are this far, then we are commited to this device.
+ * If the super_block doesn't exist, or doesn't match others,
+ * then we cannot continue
+ */
+
+ if (!havesuper) {
+ fprintf(stderr, Name ": %s has no superblock - assembly aborted\n",
+ devname);
+ return 1;
}
+ if (compare_super(&first_super, &super)) {
+ fprintf(stderr, Name ": superblock on %s doesn't match others - assembly aborted\n",
+ devname);
+ return 1;
+ }
+
- /* Ok, this one is at least worth considering */
+ /* this is needed until we get a more relaxed super block format */
if (devcnt >= MD_SB_DISKS) {
- fprintf(stderr, "mdctl: ouch - too many devices appear to be in this array. Ignoring %s\n",
+ fprintf(stderr, Name ": ouch - too many devices appear to be in this array. Ignoring %s\n",
devname);
continue;
}
+
+ /* looks like a good enough match to update the super block if needed */
+ if (update) {
+ if (strcmp(update, "sparc2.2")==0 ) {
+ /* 2.2 sparc put the events in the wrong place
+ * So we copy the tail of the superblock
+ * up 4 bytes before continuing
+ */
+ __u32 *sb32 = (__u32*)&super;
+ memcpy(sb32+MD_SB_GENERIC_CONSTANT_WORDS+7,
+ sb32+MD_SB_GENERIC_CONSTANT_WORDS+7+1,
+ (MD_SB_WORDS - (MD_SB_GENERIC_CONSTANT_WORDS+7+1))*4);
+ fprintf (stderr, Name ": adjusting superblock of %s for 2.2/sparc compatability.\n",
+ devname);
+ }
+ if (strcmp(update, "super-minor") ==0) {
+ struct stat stb2;
+ fstat(mdfd, &stb2);
+ super.md_minor = minor(stb2.st_rdev);
+ if (verbose)
+ fprintf(stderr, Name ": updating superblock of %s with minor number %d\n",
+ devname, super.md_minor);
+ }
+ if (strcmp(update, "summaries") == 0) {
+ /* set nr_disks, active_disks, working_disks,
+ * failed_disks, spare_disks based on disks[]
+ * array in superblock.
+ * Also make sure extra slots aren't 'failed'
+ */
+ super.nr_disks = super.active_disks =
+ super.working_disks = super.failed_disks =
+ super.spare_disks = 0;
+ for (i=0; i < MD_SB_DISKS ; i++)
+ if (super.disks[i].major ||
+ super.disks[i].minor) {
+ int state = super.disks[i].state;
+ if (state & (1<<MD_DISK_REMOVED))
+ continue;
+ super.nr_disks++;
+ if (state & (1<<MD_DISK_ACTIVE))
+ super.active_disks++;
+ if (state & (1<<MD_DISK_FAULTY))
+ super.failed_disks++;
+ else
+ super.working_disks++;
+ if (state == 0)
+ super.spare_disks++;
+ } else if (i >= super.raid_disks && super.disks[i].number == 0)
+ super.disks[i].state = 0;
+ }
+ if (strcmp(update, "resync") == 0) {
+ /* make sure resync happens */
+ super.state &= ~(1<<MD_SB_CLEAN);
+ super.recovery_cp = 0;
+ }
+ super.sb_csum = calc_sb_csum(&super);
+ dfd = open(devname, O_RDWR, 0);
+ if (dfd < 0)
+ fprintf(stderr, Name ": Cannot open %s for superblock update\n",
+ devname);
+ else if (store_super(dfd, &super))
+ fprintf(stderr, Name ": Could not re-write superblock on %s.\n",
+ devname);
+ if (dfd >= 0)
+ close(dfd);
+ }
+
+ if (verbose)
+ fprintf(stderr, Name ": %s is identified as a member of %s, slot %d.\n",
+ devname, mddev, super.this_disk.raid_disk);
devices[devcnt].devname = devname;
- devices[devcnt].major = MAJOR(stb.st_rdev);
- devices[devcnt].minor = MINOR(stb.st_rdev);
+ devices[devcnt].major = major(stb.st_rdev);
+ devices[devcnt].minor = minor(stb.st_rdev);
+ devices[devcnt].oldmajor = super.this_disk.major;
+ devices[devcnt].oldminor = super.this_disk.minor;
devices[devcnt].events = md_event(&super);
devices[devcnt].utime = super.utime;
+ devices[devcnt].raid_disk = super.this_disk.raid_disk;
devices[devcnt].uptodate = 0;
+ devices[devcnt].state = super.this_disk.state;
if (most_recent < devcnt) {
if (devices[devcnt].events
> devices[most_recent].events)
most_recent = devcnt;
}
- i = super.this_disk.raid_disk;
- if (best[i] == -1
- || devices[best[i]].events < devices[devcnt].events) {
- best[i] = devcnt;
+ if ((int)super.level == -4)
+ /* with multipath, the raid_disk from the superblock is meaningless */
+ i = devcnt;
+ else
+ i = devices[devcnt].raid_disk;
+ if (i < 10000) {
+ if (i >= bestcnt) {
+ unsigned int newbestcnt = i+10;
+ int *newbest = malloc(sizeof(int)*newbestcnt);
+ unsigned int c;
+ for (c=0; c < newbestcnt; c++)
+ if (c < bestcnt)
+ newbest[c] = best[c];
+ else
+ newbest[c] = -1;
+ if (best)free(best);
+ best = newbest;
+ bestcnt = newbestcnt;
+ }
+ if (best[i] == -1
+ || devices[best[i]].events < devices[devcnt].events)
+ best[i] = devcnt;
}
devcnt++;
}
if (devcnt == 0) {
- fprintf(stderr, "mdctl: no devices found for %s\n",
+ fprintf(stderr, Name ": no devices found for %s\n",
mddev);
return 1;
}
* I wonder how many
*/
okcnt = 0;
- for (i=0; i< first_super.raid_disks;i++) {
+ sparecnt=0;
+ for (i=0; i< bestcnt ;i++) {
int j = best[i];
+ int event_margin = !force;
if (j < 0) continue;
- if (devices[j].events+1 >=
+ /* note: we ignore error flags in multipath arrays
+ * as they don't make sense
+ */
+ if ((int)first_super.level != -4)
+ if (!(devices[j].state & (1<<MD_DISK_SYNC))) {
+ if (!(devices[j].state & (1<<MD_DISK_FAULTY)))
+ sparecnt++;
+ continue;
+ }
+ if (devices[j].events+event_margin >=
devices[most_recent].events) {
devices[j].uptodate = 1;
- okcnt++;
+ if (i < first_super.raid_disks)
+ okcnt++;
+ else
+ sparecnt++;
}
}
while (force && !enough(first_super.level, first_super.raid_disks, okcnt)) {
* not up-to-date, update the superblock
* and add it.
*/
- fprintf(stderr,"NoImplementedYet\n");
- /* FIXME */
- exit(2);
+ int fd;
+ chosen_drive = -1;
+ for (i=0; i<first_super.raid_disks && i < bestcnt; i++) {
+ int j = best[i];
+ if (j>=0 &&
+ !devices[j].uptodate &&
+ devices[j].events > 0 &&
+ (chosen_drive < 0 ||
+ devices[j].events > devices[chosen_drive].events))
+ chosen_drive = j;
+ }
+ if (chosen_drive < 0)
+ break;
+ fprintf(stderr, Name ": forcing event count in %s(%d) from %d upto %d\n",
+ devices[chosen_drive].devname, devices[chosen_drive].raid_disk,
+ (int)(devices[chosen_drive].events),
+ (int)(devices[most_recent].events));
+ fd = open(devices[chosen_drive].devname, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, Name ": Couldn't open %s for write - not updating\n",
+ devices[chosen_drive].devname);
+ devices[chosen_drive].events = 0;
+ continue;
+ }
+ if (load_super(fd, &super)) {
+ close(fd);
+ fprintf(stderr, Name ": RAID superblock disappeared from %s - not updating.\n",
+ devices[chosen_drive].devname);
+ devices[chosen_drive].events = 0;
+ continue;
+ }
+ super.events_hi = (devices[most_recent].events>>32)&0xFFFFFFFF;
+ super.events_lo = (devices[most_recent].events)&0xFFFFFFFF;
+ if (super.level == 5 || super.level == 4) {
+ /* need to force clean */
+ super.state = (1<<MD_SB_CLEAN);
+ }
+ super.sb_csum = calc_sb_csum(&super);
+/*DRYRUN*/ if (store_super(fd, &super)) {
+ close(fd);
+ fprintf(stderr, Name ": Could not re-write superblock on %s\n",
+ devices[chosen_drive].devname);
+ devices[chosen_drive].events = 0;
+ continue;
+ }
+ close(fd);
+ devices[chosen_drive].events = devices[most_recent].events;
+ devices[chosen_drive].uptodate = 1;
+ okcnt++;
+ }
+
+ /* Now we want to look at the superblock which the kernel will base things on
+ * and compare the devices that we think are working with the devices that the
+ * superblock thinks are working.
+ * If there are differences and --force is given, then update this chosen
+ * superblock.
+ */
+ chosen_drive = -1;
+ for (i=0; chosen_drive < 0 && i<bestcnt; i++) {
+ int j = best[i];
+ int fd;
+ if (j<0)
+ continue;
+ if (!devices[j].uptodate)
+ continue;
+ chosen_drive = j;
+ if ((fd=open(devices[j].devname, O_RDONLY))< 0) {
+ fprintf(stderr, Name ": Cannot open %s: %s\n",
+ devices[j].devname, strerror(errno));
+ return 1;
+ }
+ if (load_super(fd, &super)) {
+ close(fd);
+ fprintf(stderr, Name ": RAID superblock has disappeared from %s\n",
+ devices[j].devname);
+ return 1;
+ }
+ close(fd);
}
+
+ for (i=0; i<bestcnt; i++) {
+ int j = best[i];
+ unsigned int desired_state;
+
+ if (i < super.raid_disks)
+ desired_state = (1<<MD_DISK_ACTIVE) | (1<<MD_DISK_SYNC);
+ else
+ desired_state = 0;
+
+ if (j<0)
+ continue;
+ if (!devices[j].uptodate)
+ continue;
+#if 0
+This doesnt work yet
+ if (devices[j].major != super.disks[i].major ||
+ devices[j].minor != super.disks[i].minor) {
+ change |= 1;
+ super.disks[i].major = devices[j].major;
+ super.disks[i].minor = devices[j].minor;
+ }
+#endif
+ if (devices[j].oldmajor != super.disks[i].major ||
+ devices[j].oldminor != super.disks[i].minor) {
+ change |= 2;
+ super.disks[i].major = devices[j].oldmajor;
+ super.disks[i].minor = devices[j].oldminor;
+ }
+ if (devices[j].uptodate &&
+ (super.disks[i].state != desired_state)) {
+ if (force) {
+ fprintf(stderr, Name ": "
+ "clearing FAULTY flag for device %d in %s for %s\n",
+ j, mddev, devices[j].devname);
+ super.disks[i].state = desired_state;
+ change |= 2;
+ } else {
+ fprintf(stderr, Name ": "
+ "device %d in %s has wrong state in superblock, but %s seems ok\n",
+ i, mddev, devices[j].devname);
+ }
+ }
+ if (!devices[j].uptodate &&
+ !(super.disks[i].state & (1 << MD_DISK_FAULTY))) {
+ fprintf(stderr, Name ": devices %d of %s is not marked FAULTY in superblock, but cannot be found\n",
+ i, mddev);
+ }
+ }
+ if (force && (super.level == 4 || super.level == 5) &&
+ okcnt == super.raid_disks-1) {
+ super.state = (1<< MD_SB_CLEAN);
+ change |= 2;
+ }
+
+ if ((force && (change & 2))
+ || (old_linux && (change & 1))) {
+ int fd;
+ super.sb_csum = calc_sb_csum(&super);
+ fd = open(devices[chosen_drive].devname, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, Name ": Could open %s for write - cannot Assemble array.\n",
+ devices[chosen_drive].devname);
+ return 1;
+ }
+ if (store_super(fd, &super)) {
+ close(fd);
+ fprintf(stderr, Name ": Could not re-write superblock on %s\n",
+ devices[chosen_drive].devname);
+ return 1;
+ }
+ close(fd);
+ change = 0;
+ }
+
+ /* count number of in-sync devices according to the superblock.
+ * We must have this number to start the array without -s or -R
+ */
+ req_cnt = 0;
+ for (i=0; i<MD_SB_DISKS; i++)
+ if ((first_super.disks[i].state & (1<<MD_DISK_SYNC)) &&
+ (first_super.disks[i].state & (1<<MD_DISK_ACTIVE)) &&
+ !(first_super.disks[i].state & (1<<MD_DISK_FAULTY)))
+ req_cnt ++;
+
+
/* Almost ready to actually *do* something */
if (!old_linux) {
if (ioctl(mdfd, SET_ARRAY_INFO, NULL) != 0) {
- fprintf(stderr, "mdctl: SET_ARRAY_INFO failed for %s: %s\n",
+ fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n",
mddev, strerror(errno));
return 1;
}
- /* First, add the raid disks */
- for (i=0; i<first_super.raid_disks; i++) {
- int j = best[i];
- if (devices[j].uptodate) {
+ /* First, add the raid disks, but add the chosen one last */
+ for (i=0; i<= bestcnt; i++) {
+ int j;
+ if (i < bestcnt) {
+ j = best[i];
+ if (j == chosen_drive)
+ continue;
+ } else
+ j = chosen_drive;
+
+ if (j >= 0 /* && devices[j].uptodate */) {
mdu_disk_info_t disk;
memset(&disk, 0, sizeof(disk));
disk.major = devices[j].major;
disk.minor = devices[j].minor;
if (ioctl(mdfd, ADD_NEW_DISK, &disk)!=0) {
- fprintf(stderr, "mdctl: failed to add %s to %s: %s\n",
+ fprintf(stderr, Name ": failed to add %s to %s: %s\n",
devices[j].devname,
mddev,
strerror(errno));
- } else
- okcnt--;
- } else if (verbose)
- fprintf(stderr, "mdctl: no uptodate device for slot %d of %s\n",
+ if (i < first_super.raid_disks)
+ okcnt--;
+ else
+ sparecnt--;
+ } else if (verbose)
+ fprintf(stderr, Name ": added %s to %s as %d\n",
+ devices[j].devname, mddev, devices[j].raid_disk);
+ } else if (verbose && i < first_super.raid_disks)
+ fprintf(stderr, Name ": no uptodate device for slot %d of %s\n",
i, mddev);
}
+
if (runstop == 1 ||
(runstop == 0 &&
- enough(first_super.level, first_super.raid_disks, okcnt))) {
- if (ioctl(mdfd, RUN_ARRAY, NULL)==0)
+ ( enough(first_super.level, first_super.raid_disks, okcnt) &&
+ (okcnt >= req_cnt || start_partial_ok)
+ ))) {
+ if (ioctl(mdfd, RUN_ARRAY, NULL)==0) {
+ fprintf(stderr, Name ": %s has been started with %d drive%s",
+ mddev, okcnt, okcnt==1?"":"s");
+ if (okcnt < first_super.raid_disks)
+ fprintf(stderr, " (out of %d)", first_super.raid_disks);
+ if (sparecnt)
+ fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
+ fprintf(stderr, ".\n");
return 0;
- fprintf(stderr, "mdctl: failed to RUN_ARRAY %s: %s\n",
+ }
+ fprintf(stderr, Name ": failed to RUN_ARRAY %s: %s\n",
mddev, strerror(errno));
return 1;
}
- if (runstop == -1)
+ if (runstop == -1) {
+ fprintf(stderr, Name ": %s assembled from %d drive%s, but not started.\n",
+ mddev, okcnt, okcnt==1?"":"s");
return 0;
- else return 1;
- } else {
- /* FIXME */
+ }
+ fprintf(stderr, Name ": %s assembled from %d drive%s", mddev, okcnt, okcnt==1?"":"s");
+ if (sparecnt)
+ fprintf(stderr, " and %d spare%s", sparecnt, sparecnt==1?"":"s");
+ if (!enough(first_super.level, first_super.raid_disks, okcnt))
+ fprintf(stderr, " - not enough to start the array.\n");
+ else {
+ if (req_cnt == first_super.raid_disks)
+ fprintf(stderr, " - need all %d to start it", req_cnt);
+ else
+ fprintf(stderr, " - need %d of %d to start", req_cnt, first_super.raid_disks);
+ fprintf(stderr, " (use --run to insist).\n");
+ }
return 1;
+ } else {
+ /* The "chosen_drive" is a good choice, and if necessary, the superblock has
+ * been updated to point to the current locations of devices.
+ * so we can just start the array
+ */
+ unsigned long dev;
+ dev = makedev(devices[chosen_drive].major,
+ devices[chosen_drive].minor);
+ if (ioctl(mdfd, START_ARRAY, dev)) {
+ fprintf(stderr, Name ": Cannot start array: %s\n",
+ strerror(errno));
+ }
+
}
+ return 0;
}
projects / thirdparty / mdadm.git / blobdiff