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super1: Add support for multiple-ppls 

Add support for super1 with multiple ppls. Extend ppl area size to 1MB.
Use 1MB as default during creation. Always start array as single ppl -
if kernel is capable of multiple ppls and there is enough space reserved -
it will switch the policy during first metadata update.

Signed-off-by: Pawel Baldysiak <pawel.baldysiak@intel.com>
Signed-off-by: Artur Paszkiewicz <artur.paszkiewicz@intel.com>
Signed-off-by: Jes Sorensen <jsorensen@fb.com>
This commit is contained in:
Pawel Baldysiak 2017-09-28 14:41:08 +02:00 committed by Jes Sorensen
parent 2c8890e926
commit fa601c2e89
1 changed files with 37 additions and 28 deletions
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65
super1.c
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@ -121,6 +121,9 @@ struct misc_dev_info {
__u64 device_size;
};
#define MULTIPLE_PPL_AREA_SIZE_SUPER1 (1024 * 1024) /* Size of the whole
* mutliple PPL area
*/
/* feature_map bits */
#define MD_FEATURE_BITMAP_OFFSET 1
#define MD_FEATURE_RECOVERY_OFFSET 2 /* recovery_offset is present and
@ -140,6 +143,7 @@ struct misc_dev_info {
#define MD_FEATURE_BITMAP_VERSIONED 256 /* bitmap version number checked properly */
#define MD_FEATURE_JOURNAL 512 /* support write journal */
#define MD_FEATURE_PPL 1024 /* support PPL */
#define MD_FEATURE_MUTLIPLE_PPLS 2048 /* support for multiple PPLs */
#define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \
|MD_FEATURE_RECOVERY_OFFSET \
|MD_FEATURE_RESHAPE_ACTIVE \
@ -150,6 +154,7 @@ struct misc_dev_info {
|MD_FEATURE_BITMAP_VERSIONED \
|MD_FEATURE_JOURNAL \
|MD_FEATURE_PPL \
|MD_FEATURE_MULTIPLE_PPLS \
)
static int role_from_sb(struct mdp_superblock_1 *sb)
@ -298,6 +303,12 @@ static int awrite(struct align_fd *afd, void *buf, int len)
return len;
}
static inline unsigned int md_feature_any_ppl_on(__u32 feature_map)
{
return ((__cpu_to_le32(feature_map) &
(MD_FEATURE_PPL | MD_FEATURE_MUTLIPLE_PPLS)));
}
static inline unsigned int choose_ppl_space(int chunk)
{
return (PPL_HEADER_SIZE >> 9) + (chunk > 128*2 ? chunk : 128*2);
@ -409,7 +420,7 @@ static void examine_super1(struct supertype *st, char *homehost)
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) {
printf("Internal Bitmap : %ld sectors from superblock\n",
(long)(int32_t)__le32_to_cpu(sb->bitmap_offset));
} else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) {
} else if (md_feature_any_ppl_on(sb->feature_map)) {
printf(" PPL : %u sectors at offset %d sectors from superblock\n",
__le16_to_cpu(sb->ppl.size),
__le16_to_cpu(sb->ppl.offset));
@ -985,7 +996,7 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map)
info->bitmap_offset = (int32_t)__le32_to_cpu(sb->bitmap_offset);
if (__le32_to_cpu(bsb->nodes) > 1)
info->array.state |= (1 << MD_SB_CLUSTERED);
} else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_PPL)) {
} else if (md_feature_any_ppl_on(sb->feature_map)) {
info->ppl_offset = __le16_to_cpu(sb->ppl.offset);
info->ppl_size = __le16_to_cpu(sb->ppl.size);
info->ppl_sector = super_offset + info->ppl_offset;
@ -1140,7 +1151,7 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info, char *map)
if (sb->feature_map & __le32_to_cpu(MD_FEATURE_JOURNAL)) {
info->journal_device_required = 1;
info->consistency_policy = CONSISTENCY_POLICY_JOURNAL;
} else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_PPL)) {
} else if (md_feature_any_ppl_on(sb->feature_map)) {
info->consistency_policy = CONSISTENCY_POLICY_PPL;
} else if (sb->feature_map & __le32_to_cpu(MD_FEATURE_BITMAP_OFFSET)) {
info->consistency_policy = CONSISTENCY_POLICY_BITMAP;
@ -1324,7 +1335,7 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) {
bitmap_offset = (long)__le32_to_cpu(sb->bitmap_offset);
bm_sectors = calc_bitmap_size(bms, 4096) >> 9;
} else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) {
} else if (md_feature_any_ppl_on(sb->feature_map)) {
bitmap_offset = (long)__le16_to_cpu(sb->ppl.offset);
bm_sectors = (long)__le16_to_cpu(sb->ppl.size);
}
@ -1377,7 +1388,6 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
unsigned long long data_size = __le64_to_cpu(sb->data_size);
long bb_offset = __le32_to_cpu(sb->bblog_offset);
int space;
int optimal_space;
int offset;
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) {
@ -1408,18 +1418,23 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
return -2;
}
optimal_space = choose_ppl_space(__le32_to_cpu(sb->chunksize));
if (space > optimal_space)
space = optimal_space;
if (space > UINT16_MAX)
space = UINT16_MAX;
if (space >= (MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9)) {
space = (MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9);
} else {
int optimal_space = choose_ppl_space(
__le32_to_cpu(sb->chunksize));
if (space > optimal_space)
space = optimal_space;
if (space > UINT16_MAX)
space = UINT16_MAX;
}
sb->ppl.offset = __cpu_to_le16(offset);
sb->ppl.size = __cpu_to_le16(space);
sb->feature_map |= __cpu_to_le32(MD_FEATURE_PPL);
} else if (strcmp(update, "no-ppl") == 0) {
sb->feature_map &= ~ __cpu_to_le32(MD_FEATURE_PPL);
sb->feature_map &= ~__cpu_to_le32(MD_FEATURE_PPL |
MD_FEATURE_MUTLIPLE_PPLS);
} else if (strcmp(update, "name") == 0) {
if (info->name[0] == 0)
sprintf(info->name, "%d", info->array.md_minor);
@ -1974,20 +1989,12 @@ static int write_init_super1(struct supertype *st)
(((char *)sb) + MAX_SB_SIZE);
bm_space = calc_bitmap_size(bms, 4096) >> 9;
bm_offset = (long)__le32_to_cpu(sb->bitmap_offset);
} else if (sb->feature_map & __cpu_to_le32(MD_FEATURE_PPL)) {
bm_space =
choose_ppl_space(__le32_to_cpu(sb->chunksize));
if (bm_space > UINT16_MAX)
bm_space = UINT16_MAX;
if (st->minor_version == 0) {
} else if (md_feature_any_ppl_on(sb->feature_map)) {
bm_space = MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9;
if (st->minor_version == 0)
bm_offset = -bm_space - 8;
if (bm_offset < INT16_MIN) {
bm_offset = INT16_MIN;
bm_space = -bm_offset - 8;
}
} else {
else
bm_offset = 8;
}
sb->ppl.offset = __cpu_to_le16(bm_offset);
sb->ppl.size = __cpu_to_le16(bm_space);
} else {
@ -2069,7 +2076,7 @@ static int write_init_super1(struct supertype *st)
MD_FEATURE_BITMAP_OFFSET)) {
rv = st->ss->write_bitmap(st, di->fd, NodeNumUpdate);
} else if (rv == 0 &&
(__le32_to_cpu(sb->feature_map) & MD_FEATURE_PPL)) {
md_feature_any_ppl_on(sb->feature_map)) {
struct mdinfo info;
st->ss->getinfo_super(st, &info, NULL);
@ -2345,7 +2352,7 @@ static __u64 avail_size1(struct supertype *st, __u64 devsize,
struct bitmap_super_s *bsb;
bsb = (struct bitmap_super_s *)(((char*)super)+MAX_SB_SIZE);
bmspace = calc_bitmap_size(bsb, 4096) >> 9;
} else if (__le32_to_cpu(super->feature_map) & MD_FEATURE_PPL) {
} else if (md_feature_any_ppl_on(super->feature_map)) {
bmspace = __le16_to_cpu(super->ppl.size);
}
@ -2769,8 +2776,10 @@ static int validate_geometry1(struct supertype *st, int level,
}
/* creating: allow suitable space for bitmap or PPL */
bmspace = consistency_policy == CONSISTENCY_POLICY_PPL ?
choose_ppl_space((*chunk)*2) : choose_bm_space(devsize);
if (consistency_policy == CONSISTENCY_POLICY_PPL)
bmspace = MULTIPLE_PPL_AREA_SIZE_SUPER1 >> 9;
else
bmspace = choose_bm_space(devsize);
if (data_offset == INVALID_SECTORS)
data_offset = st->data_offset;