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Diffstat (limited to 'super0.c')
-rw-r--r--super0.c147
1 files changed, 84 insertions, 63 deletions
diff --git a/super0.c b/super0.c
index 59a6a034..938cfd95 100644
--- a/super0.c
+++ b/super0.c
@@ -87,17 +87,17 @@ static void examine_super0(struct supertype *st, char *homehost)
char *c;
printf(" Magic : %08x\n", sb->md_magic);
- printf(" Version : %d.%02d.%02d\n", sb->major_version, sb->minor_version,
- sb->patch_version);
+ printf(" Version : %d.%02d.%02d\n",
+ sb->major_version, sb->minor_version, sb->patch_version);
if (sb->minor_version >= 90) {
- printf(" UUID : %08x:%08x:%08x:%08x", sb->set_uuid0, sb->set_uuid1,
- sb->set_uuid2, sb->set_uuid3);
+ printf(" UUID : %08x:%08x:%08x:%08x", sb->set_uuid0,
+ sb->set_uuid1, sb->set_uuid2, sb->set_uuid3);
if (homehost) {
char buf[20];
- void *hash = sha1_buffer(homehost,
- strlen(homehost),
- buf);
- if (memcmp(&sb->set_uuid2, hash, 8)==0)
+ void *hash;
+
+ hash = sha1_buffer(homehost, strlen(homehost), buf);
+ if (memcmp(&sb->set_uuid2, hash, 8) == 0)
printf(" (local to host %s)", homehost);
}
printf("\n");
@@ -109,19 +109,27 @@ static void examine_super0(struct supertype *st, char *homehost)
atime = sb->ctime;
printf(" Creation Time : %.24s\n", ctime(&atime));
- c=map_num(pers, sb->level);
+ c = map_num(pers, sb->level);
printf(" Raid Level : %s\n", c?c:"-unknown-");
if ((int)sb->level > 0) {
int ddsks = 0, ddsks_denom = 1;
printf(" Used Dev Size : %d%s\n", sb->size,
human_size((long long)sb->size<<10));
switch(sb->level) {
- case 1: ddsks=1;break;
+ case 1:
+ ddsks=1;
+ break;
case 4:
- case 5: ddsks = sb->raid_disks-1; break;
- case 6: ddsks = sb->raid_disks-2; break;
- case 10: ddsks = sb->raid_disks;
- ddsks_denom = (sb->layout&255) * ((sb->layout>>8)&255);
+ case 5:
+ ddsks = sb->raid_disks - 1;
+ break;
+ case 6:
+ ddsks = sb->raid_disks - 2;
+ break;
+ case 10:
+ ddsks = sb->raid_disks;
+ ddsks_denom =
+ (sb->layout & 255) * ((sb->layout >> 8) & 255);
}
if (ddsks) {
long long asize = sb->size;
@@ -134,11 +142,14 @@ static void examine_super0(struct supertype *st, char *homehost)
printf(" Total Devices : %d\n", sb->nr_disks);
printf("Preferred Minor : %d\n", sb->md_minor);
printf("\n");
- if (sb->minor_version > 90 && (sb->reshape_position+1) != 0) {
- printf(" Reshape pos'n : %llu%s\n", (unsigned long long)sb->reshape_position/2, human_size((long long)sb->reshape_position<<9));
+ if (sb->minor_version > 90 && (sb->reshape_position + 1) != 0) {
+ printf(" Reshape pos'n : %llu%s\n",
+ (unsigned long long)sb->reshape_position / 2,
+ human_size((long long)sb->reshape_position << 9));
if (sb->delta_disks) {
printf(" Delta Devices : %d", sb->delta_disks);
- printf(" (%d->%d)\n", sb->raid_disks-sb->delta_disks, sb->raid_disks);
+ printf(" (%d->%d)\n", sb->raid_disks-sb->delta_disks,
+ sb->raid_disks);
if (((int)sb->delta_disks) < 0)
delta_extra = - sb->delta_disks;
}
@@ -149,11 +160,13 @@ static void examine_super0(struct supertype *st, char *homehost)
if (sb->new_layout != sb->layout) {
if (sb->level == 5) {
c = map_num(r5layout, sb->new_layout);
- printf(" New Layout : %s\n", c?c:"-unknown-");
+ printf(" New Layout : %s\n",
+ c?c:"-unknown-");
}
if (sb->level == 6) {
c = map_num(r6layout, sb->new_layout);
- printf(" New Layout : %s\n", c?c:"-unknown-");
+ printf(" New Layout : %s\n",
+ c?c:"-unknown-");
}
if (sb->level == 10) {
printf(" New Layout : near=%d, %s=%d\n",
@@ -169,8 +182,8 @@ static void examine_super0(struct supertype *st, char *homehost)
atime = sb->utime;
printf(" Update Time : %.24s\n", ctime(&atime));
printf(" State : %s\n",
- (sb->state&(1<<MD_SB_CLEAN))?"clean":"active");
- if (sb->state & (1<<MD_SB_BITMAP_PRESENT))
+ (sb->state&(1 << MD_SB_CLEAN)) ? "clean":"active");
+ if (sb->state & (1 << MD_SB_BITMAP_PRESENT))
printf("Internal Bitmap : present\n");
printf(" Active Devices : %d\n", sb->active_disks);
printf("Working Devices : %d\n", sb->working_disks);
@@ -179,10 +192,10 @@ static void examine_super0(struct supertype *st, char *homehost)
if (calc_sb0_csum(sb) == sb->sb_csum)
printf(" Checksum : %x - correct\n", sb->sb_csum);
else
- printf(" Checksum : %x - expected %lx\n", sb->sb_csum, calc_sb0_csum(sb));
+ printf(" Checksum : %x - expected %lx\n",
+ sb->sb_csum, calc_sb0_csum(sb));
printf(" Events : %llu\n",
- ((unsigned long long)sb->events_hi << 32)
- + sb->events_lo);
+ ((unsigned long long)sb->events_hi << 32) + sb->events_lo);
printf("\n");
if (sb->level == 5) {
c = map_num(r5layout, sb->layout);
@@ -203,37 +216,50 @@ static void examine_super0(struct supertype *st, char *homehost)
case 5:
case 6:
case 10:
- printf(" Chunk Size : %dK\n", sb->chunk_size/1024);
+ printf(" Chunk Size : %dK\n", sb->chunk_size / 1024);
break;
case -1:
- printf(" Rounding : %dK\n", sb->chunk_size/1024);
+ printf(" Rounding : %dK\n", sb->chunk_size / 1024);
+ break;
+ default:
break;
- default: break;
}
printf("\n");
printf(" Number Major Minor RaidDevice State\n");
- for (d= -1; d<(signed int)(sb->raid_disks+delta_extra + sb->spare_disks); d++) {
+ for (d = -1;
+ d < (signed int)(sb->raid_disks + delta_extra + sb->spare_disks);
+ d++) {
mdp_disk_t *dp;
char *dv;
char nb[5];
- int wonly;
+ int wonly, failfast;
if (d>=0) dp = &sb->disks[d];
else dp = &sb->this_disk;
snprintf(nb, sizeof(nb), "%4d", d);
- printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb,
+ printf("%4s %5d %5d %5d %5d ", d < 0 ? "this" : nb,
dp->number, dp->major, dp->minor, dp->raid_disk);
- wonly = dp->state & (1<<MD_DISK_WRITEMOSTLY);
- dp->state &= ~(1<<MD_DISK_WRITEMOSTLY);
- 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 (wonly) printf(" write-mostly");
- if (dp->state == 0) printf(" spare");
- if ((dv=map_dev(dp->major, dp->minor, 0)))
+ wonly = dp->state & (1 << MD_DISK_WRITEMOSTLY);
+ failfast = dp->state & (1<<MD_DISK_FAILFAST);
+ dp->state &= ~(wonly | failfast);
+ 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 (wonly)
+ printf(" write-mostly");
+ if (failfast)
+ printf(" failfast");
+ if (dp->state == 0)
+ printf(" spare");
+ if ((dv = map_dev(dp->major, dp->minor, 0)))
printf(" %s", dv);
printf("\n");
- if (d == -1) printf("\n");
+ if (d == -1)
+ printf("\n");
}
}
@@ -558,7 +584,8 @@ static int update_super0(struct supertype *st, struct mdinfo *info,
} else if (strcmp(update, "assemble")==0) {
int d = info->disk.number;
int wonly = sb->disks[d].state & (1<<MD_DISK_WRITEMOSTLY);
- int mask = (1<<MD_DISK_WRITEMOSTLY);
+ int failfast = sb->disks[d].state & (1<<MD_DISK_FAILFAST);
+ int mask = (1<<MD_DISK_WRITEMOSTLY)|(1<<MD_DISK_FAILFAST);
int add = 0;
if (sb->minor_version >= 91)
/* During reshape we don't insist on everything
@@ -567,7 +594,7 @@ static int update_super0(struct supertype *st, struct mdinfo *info,
add = (1<<MD_DISK_SYNC);
if (((sb->disks[d].state & ~mask) | add)
!= (unsigned)info->disk.state) {
- sb->disks[d].state = info->disk.state | wonly;
+ sb->disks[d].state = info->disk.state | wonly |failfast;
rv = 1;
}
if (info->reshape_active &&
@@ -693,16 +720,14 @@ static int update_super0(struct supertype *st, struct mdinfo *info,
}
/*
- * For verion-0 superblock, the homehost is 'stored' in the
- * uuid. 8 bytes for a hash of the host leaving 8 bytes
- * of random material.
- * We use the first 8 bytes (64bits) of the sha1 of the
- * host name
+ * For version-0 superblock, the homehost is 'stored' in the uuid.
+ * 8 bytes for a hash of the host leaving 8 bytes of random material.
+ * We use the first 8 bytes (64bits) of the sha1 of the host name
*/
-
static int init_super0(struct supertype *st, mdu_array_info_t *info,
- unsigned long long size, char *ignored_name, char *homehost,
- int *uuid, unsigned long long data_offset)
+ unsigned long long size, char *ignored_name,
+ char *homehost, int *uuid,
+ unsigned long long data_offset)
{
mdp_super_t *sb;
int spares;
@@ -752,16 +777,12 @@ static int init_super0(struct supertype *st, mdu_array_info_t *info,
sb->set_uuid2 = uuid[2];
sb->set_uuid3 = uuid[3];
} else {
- int rfd = open("/dev/urandom", O_RDONLY);
- if (rfd < 0 || read(rfd, &sb->set_uuid0, 4) != 4)
- sb->set_uuid0 = random();
- if (rfd < 0 || read(rfd, &sb->set_uuid1, 12) != 12) {
- sb->set_uuid1 = random();
- sb->set_uuid2 = random();
- sb->set_uuid3 = random();
- }
- if (rfd >= 0)
- close(rfd);
+ __u32 r[4];
+ random_uuid((__u8 *)r);
+ sb->set_uuid0 = r[0];
+ sb->set_uuid1 = r[1];
+ sb->set_uuid2 = r[2];
+ sb->set_uuid3 = r[3];
}
if (homehost && !uuid) {
char buf[20];
@@ -1139,7 +1160,7 @@ static int add_internal_bitmap0(struct supertype *st, int *chunkp,
if (chunk < 64*1024*1024)
chunk = 64*1024*1024;
} else if ((unsigned long long)chunk < min_chunk)
- return 0; /* chunk size too small */
+ return -EINVAL; /* chunk size too small */
sb->state |= (1<<MD_SB_BITMAP_PRESENT);
@@ -1153,10 +1174,10 @@ static int add_internal_bitmap0(struct supertype *st, int *chunkp,
bms->sync_size = __cpu_to_le64(size);
bms->write_behind = __cpu_to_le32(write_behind);
*chunkp = chunk;
- return 1;
+ return 0;
}
-static int locate_bitmap0(struct supertype *st, int fd)
+static int locate_bitmap0(struct supertype *st, int fd, int node_num)
{
unsigned long long dsize;
unsigned long long offset;