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mdadm.14070
0178-super1-Add-support-for-multiple-ppls.patch
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File 0178-super1-Add-support-for-multiple-ppls.patch of Package mdadm.14070
From fa601c2e897adfb3d2316377354269ffdeb824c3 Mon Sep 17 00:00:00 2001 From: Pawel Baldysiak <pawel.baldysiak@intel.com> Date: Thu, 28 Sep 2017 14:41:08 +0200 Subject: [PATCH] super1: Add support for multiple-ppls Git-commit: fa601c2e897adfb3d2316377354269ffdeb824c3 Patch-mainline: mdadm-4.0+ References: bsc#1069165, bsc#1069167, bsc#1068030 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> Signed-off-by: Coly Li <colyli@suse.de> --- super1.c | 65 ++++++++++++++++++++++++++++++++++++---------------------------- 1 file changed, 37 insertions(+), 28 deletions(-) diff --git a/super1.c b/super1.c index 3cfbbc0..f80e38a 100644 --- a/super1.c +++ b/super1.c @@ -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; -- 2.13.6
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