/*
- * 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 "mdadm.h"
+#include "dlink.h"
+#if ! defined(__BIG_ENDIAN) && ! defined(__LITTLE_ENDIAN)
+#error no endian defined
+#endif
#include "md_u.h"
#include "md_p.h"
-int Examine(char *dev)
+int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust)
{
/* Read the raid superblock from a device and
*
* utime, state etc
*
+ * If (brief) gather devices for same array and just print a mdadm.conf line including devices=
+ * if devlist==NULL, use conf_get_devs(
*/
- int fd = open(dev, O_RDONLY, 0);
+ int fd;
time_t atime;
mdp_super_t super;
int d;
- int rv;
+ char *c;
+ int rv = 0;
+ int err;
- if (fd < 0) {
- fprintf(stderr,"mdctl: cannot open %s: %s\n",
- dev, strerror(errno));
- return 1;
- }
+ struct array {
+ mdp_super_t super;
+ void *devs;
+ struct array *next;
+ } *arrays = NULL;
- rv = load_super(fd, &super);
- close(fd);
- switch(rv) {
- case 1:
- fprintf(stderr, "mdctl: cannot find device size for %s: %s\n",
- dev, strerror(errno));
- return 1;
- case 2:
-/* fprintf(stderr, "mdctl: %s is too small for md: size is %ld sectors\n",
- dev, size);
+ for (; devlist ; devlist=devlist->next) {
+ fd = open(devlist->devname, O_RDONLY);
+ if (fd < 0) {
+ if (!scan)
+ fprintf(stderr,Name ": cannot open %s: %s\n",
+ devlist->devname, strerror(errno));
+ err = 1;
+ }
+ else {
+ err = load_super(fd, &super);
+ close(fd);
+ }
+ if (err && (brief||scan))
+ continue;
+ if (err) rv =1;
+ switch(err) {
+ case 1:
+ fprintf(stderr, Name ": cannot find device size for %s: %s\n",
+ devlist->devname, strerror(errno));
+ continue;
+ case 2:
+/* fprintf(stderr, Name ": %s is too small for md: size is %ld sectors\n",
+ devlist->devname, size);
*/
- fprintf(stderr, "mdctl: %s is too small for md\n",
- dev);
- return 1;
- case 3:
- fprintf(stderr, "mdctl: Cannot seek to superblock on %s: %s\n",
- dev, strerror(errno));
- return 1;
- case 4:
- fprintf(stderr, "mdctl: Cannot read superblock on %s\n",
- dev);
- return 1;
- case 5:
- fprintf(stderr, "mdctl: No super block found on %s (Expected magic %08x, got %08x)\n",
- dev, MD_SB_MAGIC, super.md_magic);
- return 1;
- case 6:
- fprintf(stderr, "mdctl: Cannot interpret superblock on %s - version is %d\n",
- dev, super.major_version);
- return 1;
- }
+ fprintf(stderr, Name ": %s is too small for md\n",
+ devlist->devname);
+ continue;
+ case 3:
+ fprintf(stderr, Name ": Cannot seek to superblock on %s: %s\n",
+ devlist->devname, strerror(errno));
+ continue;
+ case 4:
+ fprintf(stderr, Name ": Cannot read superblock on %s\n",
+ devlist->devname);
+ continue;
+ case 5:
+ fprintf(stderr, Name ": No super block found on %s (Expected magic %08x, got %08x)\n",
+ devlist->devname, MD_SB_MAGIC, super.md_magic);
+ continue;
+ case 6:
+ fprintf(stderr, Name ": Cannot interpret superblock on %s - version is %d\n",
+ devlist->devname, super.major_version);
+ continue;
+ }
- /* Ok, its good enough to try, though the checksum could be wrong */
- printf("%s:\n",dev);
- printf(" Magic : %08x\n", super.md_magic);
- printf(" Version : %02d.%02d.%02d\n", super.major_version, super.minor_version,
- super.patch_version);
- if (super.minor_version >= 90)
- printf(" UUID : %08x:%08x:%08x:%08x\n", super.set_uuid0, super.set_uuid1,
- super.set_uuid2, super.set_uuid3);
- else
- printf(" UUID : %08x\n", super.set_uuid0);
+ /* Ok, its good enough to try, though the checksum could be wrong */
+ if (brief) {
+ struct array *ap;
+ char *d;
+ for (ap=arrays; ap; ap=ap->next) {
+ if (compare_super(&ap->super, &super)==0)
+ break;
+ }
+ if (!ap) {
+ ap = malloc(sizeof(*ap));
+ ap->super = super;
+ ap->devs = dl_head();
+ ap->next = arrays;
+ arrays = ap;
+ }
+ d = dl_strdup(devlist->devname);
+ dl_add(ap->devs, d);
+ } else {
+ printf("%s:\n",devlist->devname);
+ printf(" Magic : %08x\n", super.md_magic);
+ printf(" Version : %02d.%02d.%02d\n", super.major_version, super.minor_version,
+ super.patch_version);
+ if (super.minor_version >= 90)
+ printf(" UUID : %08x:%08x:%08x:%08x\n", super.set_uuid0, super.set_uuid1,
+ super.set_uuid2, super.set_uuid3);
+ else
+ printf(" UUID : %08x\n", super.set_uuid0);
- atime = super.ctime;
- printf(" Creation Time : %.24s\n", ctime(&atime));
- printf(" Raid Level : %d\n", super.level);
- printf(" Size : %d\n", super.size);
- printf(" Raid Disks : %d\n", super.raid_disks);
- printf(" Total Disks : %d\n", super.nr_disks);
- printf("Preferred Minor : %d\n", super.md_minor);
- printf("\n");
- atime = super.utime;
- printf(" Update Time : %.24s\n", ctime(&atime));
- printf(" State : %s, %serrors\n",
- (super.state&(1<<MD_SB_CLEAN))?"clean":"dirty",
- (super.state&(1<<MD_SB_ERRORS))?"":"no-");
- printf(" Active Drives : %d\n", super.active_disks);
- printf(" Working Drives : %d\n", super.working_disks);
- printf(" Failed Drives : %d\n", super.failed_disks);
- printf(" Spare Drives : %d\n", super.spare_disks);
- printf(" - checksum not checked yet - \n");
- printf(" Events : %d.%d\n", super.events_hi, super.events_lo);
- printf("\n");
- printf(" Layout : %d\n", super.layout);
- printf(" Chunk Size : %dK\n", super.chunk_size/1024);
- printf("\n");
- printf(" Number Major Minor RaidDisk State\n");
- for (d= -1; d<(signed int)super.nr_disks; d++) {
- mdp_disk_t *dp;
- char nb[5];
- if (d>=0) dp = &super.disks[d];
- else dp = &super.this_disk;
- sprintf(nb, "%4d", d);
- printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb,
- dp->number, dp->major, dp->minor, dp->raid_disk);
- if (dp->state & (1<<MD_DISK_FAULTY)) printf(" faulty");
- if (dp->state & (1<<MD_DISK_ACTIVE)) printf(" active");
- if (dp->state & (1<<MD_DISK_SYNC)) printf(" sync");
- if (dp->state & (1<<MD_DISK_REMOVED)) printf(" removed");
- printf("\n");
+ atime = super.ctime;
+ printf(" Creation Time : %.24s\n", ctime(&atime));
+ c=map_num(pers, super.level);
+ printf(" Raid Level : %s\n", c?c:"-unknown-");
+ printf(" Device Size : %d%s\n", super.size, human_size((long long)super.size<<10));
+ printf(" Raid Devices : %d\n", super.raid_disks);
+ printf(" Total Devices : %d\n", super.nr_disks);
+ printf("Preferred Minor : %d\n", super.md_minor);
+ printf("\n");
+ atime = super.utime;
+ printf(" Update Time : %.24s\n", ctime(&atime));
+ printf(" State : %s, %serrors\n",
+ (super.state&(1<<MD_SB_CLEAN))?"clean":"dirty",
+ (super.state&(1<<MD_SB_ERRORS))?"":"no-");
+ printf(" Active Devices : %d\n", super.active_disks);
+ printf("Working Devices : %d\n", super.working_disks);
+ printf(" Failed Devices : %d\n", super.failed_disks);
+ printf(" Spare Devices : %d\n", super.spare_disks);
+ if (calc_sb_csum(&super) == super.sb_csum)
+ printf(" Checksum : %x - correct\n", super.sb_csum);
+ else
+ printf(" Checksum : %x - expected %x\n", super.sb_csum, calc_sb_csum(&super));
+ if (SparcAdjust) {
+ /* 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));
+ printf (" --- adjusting superblock for 2.2/sparc compatability ---\n");
+ }
+ printf(" Events : %d.%d\n", super.events_hi, super.events_lo);
+ printf("\n");
+ if (super.level == 5) {
+ c = map_num(r5layout, super.layout);
+ printf(" Layout : %s\n", c?c:"-unknown-");
+ }
+ switch(super.level) {
+ case 0:
+ case 4:
+ case 5:
+ printf(" Chunk Size : %dK\n", super.chunk_size/1024);
+ break;
+ case -1:
+ printf(" Rounding : %dK\n", super.chunk_size/1024);
+ break;
+ default: break;
+ }
+ printf("\n");
+ printf(" Number Major Minor RaidDevice State\n");
+ for (d= -1; d<(signed int)(super.raid_disks+super.spare_disks); d++) {
+ mdp_disk_t *dp;
+ char *dv;
+ char nb[5];
+ if (d>=0) dp = &super.disks[d];
+ else dp = &super.this_disk;
+ sprintf(nb, "%4d", d);
+ printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb,
+ dp->number, dp->major, dp->minor, dp->raid_disk);
+ if (dp->state & (1<<MD_DISK_FAULTY)) printf(" faulty");
+ if (dp->state & (1<<MD_DISK_ACTIVE)) printf(" active");
+ if (dp->state & (1<<MD_DISK_SYNC)) printf(" sync");
+ if (dp->state & (1<<MD_DISK_REMOVED)) printf(" removed");
+ if ((dv=map_dev(dp->major, dp->minor)))
+ printf(" %s", dv);
+ printf("\n");
+ }
+ }
+ if (SparcAdjust == 2) {
+ printf(" ----- updating superblock on device ----\n");
+ fd = open(devlist->devname, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, Name ": cannot open %s to update superblock: %s\n",
+ devlist->devname, strerror(errno));
+ err = 1;
+ } else {
+ super.sb_csum = calc_sb_csum(&super);
+ if (store_super(fd, &super)) {
+ fprintf(stderr, Name ": Count not re-write superblock on %s\n",
+ devlist->devname);
+ err = 1;
+ }
+ close(fd);
+ }
+ }
+ }
+ if (brief) {
+ struct array *ap;
+ for (ap=arrays; ap; ap=ap->next) {
+ char sep='=';
+ char *c=map_num(pers, ap->super.level);
+ char *d;
+ printf("ARRAY /dev/md%d level=%s num-devices=%d UUID=",
+ ap->super.md_minor, c?c:"-unknown-", ap->super.raid_disks);
+ if (ap->super.minor_version >= 90)
+ printf("%08x:%08x:%08x:%08x", ap->super.set_uuid0, ap->super.set_uuid1,
+ ap->super.set_uuid2, ap->super.set_uuid3);
+ else
+ printf("%08x", ap->super.set_uuid0);
+ printf("\n devices");
+ for (d=dl_next(ap->devs); d!= ap->devs; d=dl_next(d)) {
+ printf("%c%s", sep, d);
+ sep=',';
+ }
+ printf("\n");
+ }
}
- return 0;
+ return rv;
}
projects / thirdparty / mdadm.git / blobdiff