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btrfs-progs: add support for raid1c3 and raid1c4

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Add support for 3- and 4- copy variants of RAID1. This adds resiliency
against 2 or resp. 3 devices lost or damaged.

$ ./mkfs.btrfs -m raid1c4 -d raid1c3 /dev/sd[abcd]

Label:              (null)
UUID:               f1f988ab-6750-4bc2-957b-98a4ebe98631
Node size:          16384
Sector size:        4096
Filesystem size:    8.00GiB
Block group profiles:
  Data:             RAID1C3         273.06MiB
  Metadata:         RAID1C4         204.75MiB
  System:           RAID1C4           8.00MiB
SSD detected:       no
Incompat features:  extref, skinny-metadata, raid1c34
Number of devices:  4
Devices:
   ID        SIZE  PATH
    1     2.00GiB  /dev/sda
    2     2.00GiB  /dev/sdb
    3     2.00GiB  /dev/sdc
    4     2.00GiB  /dev/sdd

Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
David Sterba 2019-10-31 19:43:17 +01:00
parent beef042d50
commit 1f5094bb5c
13 changed files with 116 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
cmds/balance.c
View File

@ -46,6 +46,10 @@ static int parse_one_profile(const char *profile, u64 *flags)
*flags |= BTRFS_BLOCK_GROUP_RAID0;
} else if (!strcmp(profile, "raid1")) {
*flags |= BTRFS_BLOCK_GROUP_RAID1;
} else if (!strcmp(profile, "raid1c3")) {
*flags |= BTRFS_BLOCK_GROUP_RAID1C3;
} else if (!strcmp(profile, "raid1c4")) {
*flags |= BTRFS_BLOCK_GROUP_RAID1C4;
} else if (!strcmp(profile, "raid10")) {
*flags |= BTRFS_BLOCK_GROUP_RAID10;
} else if (!strcmp(profile, "raid5")) {

8
cmds/filesystem-usage.c
View File

@ -374,6 +374,10 @@ static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
ratio = 1;
else if (flags & BTRFS_BLOCK_GROUP_RAID1)
ratio = 2;
else if (flags & BTRFS_BLOCK_GROUP_RAID1C3)
ratio = 3;
else if (flags & BTRFS_BLOCK_GROUP_RAID1C4)
ratio = 4;
else if (flags & BTRFS_BLOCK_GROUP_RAID5)
ratio = 0;
else if (flags & BTRFS_BLOCK_GROUP_RAID6)
@ -661,6 +665,10 @@ static u64 calc_chunk_size(struct chunk_info *ci)
return ci->size / ci->num_stripes;
else if (ci->type & BTRFS_BLOCK_GROUP_RAID1)
return ci->size ;
else if (ci->type & BTRFS_BLOCK_GROUP_RAID1C3)
return ci->size;
else if (ci->type & BTRFS_BLOCK_GROUP_RAID1C4)
return ci->size;
else if (ci->type & BTRFS_BLOCK_GROUP_DUP)
return ci->size ;
else if (ci->type & BTRFS_BLOCK_GROUP_RAID5)

3
cmds/inspect-dump-super.c
View File

@ -227,7 +227,8 @@ static struct readable_flag_entry incompat_flags_array[] = {
DEF_INCOMPAT_FLAG_ENTRY(RAID56),
DEF_INCOMPAT_FLAG_ENTRY(SKINNY_METADATA),
DEF_INCOMPAT_FLAG_ENTRY(NO_HOLES),
DEF_INCOMPAT_FLAG_ENTRY(METADATA_UUID)
DEF_INCOMPAT_FLAG_ENTRY(METADATA_UUID),
DEF_INCOMPAT_FLAG_ENTRY(RAID1C34),
};
static const int incompat_flags_num = sizeof(incompat_flags_array) /
sizeof(struct readable_flag_entry);

4
cmds/rescue-chunk-recover.c
View File

@ -1582,6 +1582,10 @@ static int calc_num_stripes(u64 type)
else if (type & (BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_DUP))
return 2;
else if (type & (BTRFS_BLOCK_GROUP_RAID1C3))
return 3;
else if (type & (BTRFS_BLOCK_GROUP_RAID1C4))
return 4;
else
return 1;
}

6
common/fsfeatures.c
View File

@ -86,6 +86,12 @@ static const struct btrfs_fs_feature {
VERSION_TO_STRING2(4,0),
NULL, 0,
"no explicit hole extents for files" },
{ "raid1c34", BTRFS_FEATURE_INCOMPAT_RAID1C34,
"raid1c34",
VERSION_TO_STRING2(5,5),
NULL, 0,
NULL, 0,
"RAID1 with 3 or 4 copies" },
/* Keep this one last */
{ "list-all", BTRFS_FEATURE_LIST_ALL, NULL }
};

12
common/utils.c
View File

@ -1137,8 +1137,10 @@ static int group_profile_devs_min(u64 flag)
case BTRFS_BLOCK_GROUP_RAID5:
return 2;
case BTRFS_BLOCK_GROUP_RAID6:
case BTRFS_BLOCK_GROUP_RAID1C3:
return 3;
case BTRFS_BLOCK_GROUP_RAID10:
case BTRFS_BLOCK_GROUP_RAID1C4:
return 4;
default:
return -1;
@ -1155,9 +1157,10 @@ int test_num_disk_vs_raid(u64 metadata_profile, u64 data_profile,
default:
case 4:
allowed |= BTRFS_BLOCK_GROUP_RAID10;
allowed |= BTRFS_BLOCK_GROUP_RAID10 | BTRFS_BLOCK_GROUP_RAID1C4;
/* fallthrough */
case 3:
allowed |= BTRFS_BLOCK_GROUP_RAID6;
allowed |= BTRFS_BLOCK_GROUP_RAID6 | BTRFS_BLOCK_GROUP_RAID1C3;
/* fallthrough */
case 2:
allowed |= BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
@ -1211,7 +1214,10 @@ int group_profile_max_safe_loss(u64 flags)
case BTRFS_BLOCK_GROUP_RAID10:
return 1;
case BTRFS_BLOCK_GROUP_RAID6:
case BTRFS_BLOCK_GROUP_RAID1C3:
return 2;
case BTRFS_BLOCK_GROUP_RAID1C4:
return 3;
default:
return -1;
}
@ -1361,6 +1367,10 @@ const char* btrfs_group_profile_str(u64 flag)
return "RAID0";
case BTRFS_BLOCK_GROUP_RAID1:
return "RAID1";
case BTRFS_BLOCK_GROUP_RAID1C3:
return "RAID1C3";
case BTRFS_BLOCK_GROUP_RAID1C4:
return "RAID1C4";
case BTRFS_BLOCK_GROUP_RAID5:
return "RAID5";
case BTRFS_BLOCK_GROUP_RAID6:

8
ctree.h
View File

@ -492,6 +492,7 @@ struct btrfs_super_block {
#define BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA (1ULL << 8)
#define BTRFS_FEATURE_INCOMPAT_NO_HOLES (1ULL << 9)
#define BTRFS_FEATURE_INCOMPAT_METADATA_UUID (1ULL << 10)
#define BTRFS_FEATURE_INCOMPAT_RAID1C34 (1ULL << 11)
#define BTRFS_FEATURE_COMPAT_SUPP 0ULL
@ -515,6 +516,7 @@ struct btrfs_super_block {
BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS | \
BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA | \
BTRFS_FEATURE_INCOMPAT_NO_HOLES | \
BTRFS_FEATURE_INCOMPAT_RAID1C34 | \
BTRFS_FEATURE_INCOMPAT_METADATA_UUID)
/*
@ -964,6 +966,8 @@ struct btrfs_csum_item {
#define BTRFS_BLOCK_GROUP_RAID10 (1ULL << 6)
#define BTRFS_BLOCK_GROUP_RAID5 (1ULL << 7)
#define BTRFS_BLOCK_GROUP_RAID6 (1ULL << 8)
#define BTRFS_BLOCK_GROUP_RAID1C3 (1ULL << 9)
#define BTRFS_BLOCK_GROUP_RAID1C4 (1ULL << 10)
#define BTRFS_BLOCK_GROUP_RESERVED BTRFS_AVAIL_ALLOC_BIT_SINGLE
enum btrfs_raid_types {
@ -974,6 +978,8 @@ enum btrfs_raid_types {
BTRFS_RAID_SINGLE,
BTRFS_RAID_RAID5,
BTRFS_RAID_RAID6,
BTRFS_RAID_RAID1C3,
BTRFS_RAID_RAID1C4,
BTRFS_NR_RAID_TYPES
};
@ -985,6 +991,8 @@ enum btrfs_raid_types {
BTRFS_BLOCK_GROUP_RAID1 | \
BTRFS_BLOCK_GROUP_RAID5 | \
BTRFS_BLOCK_GROUP_RAID6 | \
BTRFS_BLOCK_GROUP_RAID1C3 | \
BTRFS_BLOCK_GROUP_RAID1C4 | \
BTRFS_BLOCK_GROUP_DUP | \
BTRFS_BLOCK_GROUP_RAID10)

4
extent-tree.c
View File

@ -1673,6 +1673,8 @@ static void set_avail_alloc_bits(struct btrfs_fs_info *fs_info, u64 flags)
{
u64 extra_flags = flags & (BTRFS_BLOCK_GROUP_RAID0 |
BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_RAID1C3 |
BTRFS_BLOCK_GROUP_RAID1C4 |
BTRFS_BLOCK_GROUP_RAID10 |
BTRFS_BLOCK_GROUP_RAID5 |
BTRFS_BLOCK_GROUP_RAID6 |
@ -3128,6 +3130,8 @@ static u64 get_dev_extent_len(struct map_lookup *map)
case 0: /* Single */
case BTRFS_BLOCK_GROUP_DUP:
case BTRFS_BLOCK_GROUP_RAID1:
case BTRFS_BLOCK_GROUP_RAID1C3:
case BTRFS_BLOCK_GROUP_RAID1C4:
div = 1;
break;
case BTRFS_BLOCK_GROUP_RAID5:

4
ioctl.h
View File

@ -775,7 +775,9 @@ enum btrfs_err_code {
BTRFS_ERROR_DEV_TGT_REPLACE,
BTRFS_ERROR_DEV_MISSING_NOT_FOUND,
BTRFS_ERROR_DEV_ONLY_WRITABLE,
BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS
BTRFS_ERROR_DEV_EXCL_RUN_IN_PROGRESS,
BTRFS_ERROR_DEV_RAID1C3_MIN_NOT_MET,
BTRFS_ERROR_DEV_RAID1C4_MIN_NOT_MET,
};
/* An error code to error string mapping for the kernel

11
mkfs/main.c
View File

@ -337,7 +337,7 @@ static void print_usage(int ret)
printf("Usage: mkfs.btrfs [options] dev [ dev ... ]\n");
printf("Options:\n");
printf(" allocation profiles:\n");
printf("\t-d|--data PROFILE data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
printf("\t-d|--data PROFILE data profile, raid0, raid1, raid1c3, raid1c4, raid5, raid6, raid10, dup or single\n");
printf("\t-m|--metadata PROFILE metadata profile, values like for data profile\n");
printf("\t-M|--mixed mix metadata and data together\n");
printf(" features:\n");
@ -370,6 +370,10 @@ static u64 parse_profile(const char *s)
return BTRFS_BLOCK_GROUP_RAID0;
} else if (strcasecmp(s, "raid1") == 0) {
return BTRFS_BLOCK_GROUP_RAID1;
} else if (strcasecmp(s, "raid1c3") == 0) {
return BTRFS_BLOCK_GROUP_RAID1C3;
} else if (strcasecmp(s, "raid1c4") == 0) {
return BTRFS_BLOCK_GROUP_RAID1C4;
} else if (strcasecmp(s, "raid5") == 0) {
return BTRFS_BLOCK_GROUP_RAID5;
} else if (strcasecmp(s, "raid6") == 0) {
@ -1053,6 +1057,11 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
features |= BTRFS_FEATURE_INCOMPAT_RAID56;
}
if ((data_profile | metadata_profile) &
(BTRFS_BLOCK_GROUP_RAID1C3 | BTRFS_BLOCK_GROUP_RAID1C4)) {
features |= BTRFS_FEATURE_INCOMPAT_RAID1C34;
}
if (btrfs_check_nodesize(nodesize, sectorsize,
features))
goto error;

6
print-tree.c
View File

@ -162,6 +162,12 @@ static void bg_flags_to_str(u64 flags, char *ret)
case BTRFS_BLOCK_GROUP_RAID1:
strcat(ret, "|RAID1");
break;
case BTRFS_BLOCK_GROUP_RAID1C3:
strcat(ret, "|RAID1C3");
break;
case BTRFS_BLOCK_GROUP_RAID1C4:
strcat(ret, "|RAID1C4");
break;
case BTRFS_BLOCK_GROUP_DUP:
strcat(ret, "|DUP");
break;

48
volumes.c
View File

@ -57,6 +57,24 @@ const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES] = {
.bg_flag = BTRFS_BLOCK_GROUP_RAID1,
.mindev_error = BTRFS_ERROR_DEV_RAID1_MIN_NOT_MET,
},
[BTRFS_RAID_RAID1C3] = {
.sub_stripes = 1,
.dev_stripes = 1,
.devs_max = 3,
.devs_min = 3,
.tolerated_failures = 2,
.devs_increment = 3,
.ncopies = 3,
},
[BTRFS_RAID_RAID1C4] = {
.sub_stripes = 1,
.dev_stripes = 1,
.devs_max = 4,
.devs_min = 4,
.tolerated_failures = 3,
.devs_increment = 4,
.ncopies = 4,
},
[BTRFS_RAID_DUP] = {
.sub_stripes = 1,
.dev_stripes = 2,
@ -854,6 +872,8 @@ static u64 chunk_bytes_by_type(u64 type, u64 calc_size, int num_stripes,
{
if (type & (BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_DUP))
return calc_size;
else if (type & (BTRFS_BLOCK_GROUP_RAID1C3 | BTRFS_BLOCK_GROUP_RAID1C4))
return calc_size;
else if (type & BTRFS_BLOCK_GROUP_RAID10)
return calc_size * (num_stripes / sub_stripes);
else if (type & BTRFS_BLOCK_GROUP_RAID5)
@ -1034,6 +1054,20 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans,
return -ENOSPC;
min_stripes = 2;
}
if (type & BTRFS_BLOCK_GROUP_RAID1C3) {
num_stripes = min_t(u64, 3,
btrfs_super_num_devices(info->super_copy));
if (num_stripes < 3)
return -ENOSPC;
min_stripes = 3;
}
if (type & BTRFS_BLOCK_GROUP_RAID1C4) {
num_stripes = min_t(u64, 4,
btrfs_super_num_devices(info->super_copy));
if (num_stripes < 4)
return -ENOSPC;
min_stripes = 4;
}
if (type & BTRFS_BLOCK_GROUP_DUP) {
num_stripes = 2;
min_stripes = 2;
@ -1366,7 +1400,8 @@ int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len)
}
map = container_of(ce, struct map_lookup, ce);
if (map->type & (BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1))
if (map->type & (BTRFS_BLOCK_GROUP_DUP | BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_RAID1C3 | BTRFS_BLOCK_GROUP_RAID1C4))
ret = map->num_stripes;
else if (map->type & BTRFS_BLOCK_GROUP_RAID10)
ret = map->sub_stripes;
@ -1562,6 +1597,8 @@ again:
if (rw == WRITE) {
if (map->type & (BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_RAID1C3 |
BTRFS_BLOCK_GROUP_RAID1C4 |
BTRFS_BLOCK_GROUP_DUP)) {
stripes_required = map->num_stripes;
} else if (map->type & BTRFS_BLOCK_GROUP_RAID10) {
@ -1604,6 +1641,7 @@ again:
stripe_offset = offset - stripe_offset;
if (map->type & (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_RAID1C3 | BTRFS_BLOCK_GROUP_RAID1C4 |
BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6 |
BTRFS_BLOCK_GROUP_RAID10 |
BTRFS_BLOCK_GROUP_DUP)) {
@ -1619,7 +1657,9 @@ again:
multi->num_stripes = 1;
stripe_index = 0;
if (map->type & BTRFS_BLOCK_GROUP_RAID1) {
if (map->type & (BTRFS_BLOCK_GROUP_RAID1 |
BTRFS_BLOCK_GROUP_RAID1C3 |
BTRFS_BLOCK_GROUP_RAID1C4)) {
if (rw == WRITE)
multi->num_stripes = map->num_stripes;
else if (mirror_num)
@ -1889,6 +1929,8 @@ int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info,
if ((type & BTRFS_BLOCK_GROUP_RAID10 && (sub_stripes != 2 ||
!IS_ALIGNED(num_stripes, sub_stripes))) ||
(type & BTRFS_BLOCK_GROUP_RAID1 && num_stripes < 1) ||
(type & BTRFS_BLOCK_GROUP_RAID1C3 && num_stripes < 3) ||
(type & BTRFS_BLOCK_GROUP_RAID1C4 && num_stripes < 4) ||
(type & BTRFS_BLOCK_GROUP_RAID5 && num_stripes < 2) ||
(type & BTRFS_BLOCK_GROUP_RAID6 && num_stripes < 3) ||
(type & BTRFS_BLOCK_GROUP_DUP && num_stripes > 2) ||
@ -2448,6 +2490,8 @@ u64 btrfs_stripe_length(struct btrfs_fs_info *fs_info,
switch (profile) {
case 0: /* Single profile */
case BTRFS_BLOCK_GROUP_RAID1:
case BTRFS_BLOCK_GROUP_RAID1C3:
case BTRFS_BLOCK_GROUP_RAID1C4:
case BTRFS_BLOCK_GROUP_DUP:
stripe_len = chunk_len;
break;

4
volumes.h
View File

@ -135,6 +135,10 @@ static inline enum btrfs_raid_types btrfs_bg_flags_to_raid_index(u64 flags)
return BTRFS_RAID_RAID10;
else if (flags & BTRFS_BLOCK_GROUP_RAID1)
return BTRFS_RAID_RAID1;
else if (flags & BTRFS_BLOCK_GROUP_RAID1C3)
return BTRFS_RAID_RAID1C3;
else if (flags & BTRFS_BLOCK_GROUP_RAID1C4)
return BTRFS_RAID_RAID1C4;
else if (flags & BTRFS_BLOCK_GROUP_DUP)
return BTRFS_RAID_DUP;
else if (flags & BTRFS_BLOCK_GROUP_RAID0)