diff --git a/convert/common.c b/convert/common.c index 8cae507e..2e2318a5 100644 --- a/convert/common.c +++ b/convert/common.c @@ -135,7 +135,7 @@ static int setup_temp_super(int fd, struct btrfs_mkfs_config *cfg, super->__unused_leafsize = cpu_to_le32(cfg->nodesize); btrfs_set_super_nodesize(super, cfg->nodesize); btrfs_set_super_stripesize(super, cfg->stripesize); - btrfs_set_super_csum_type(super, BTRFS_CSUM_TYPE_CRC32); + btrfs_set_super_csum_type(super, cfg->csum_type); btrfs_set_super_chunk_root(super, chunk_bytenr); btrfs_set_super_cache_generation(super, -1); btrfs_set_super_incompat_flags(super, cfg->features); diff --git a/mkfs/common.c b/mkfs/common.c index 9762391a..4a417bd7 100644 --- a/mkfs/common.c +++ b/mkfs/common.c @@ -202,7 +202,7 @@ int make_btrfs(int fd, struct btrfs_mkfs_config *cfg) super.__unused_leafsize = cpu_to_le32(cfg->nodesize); btrfs_set_super_nodesize(&super, cfg->nodesize); btrfs_set_super_stripesize(&super, cfg->stripesize); - btrfs_set_super_csum_type(&super, BTRFS_CSUM_TYPE_CRC32); + btrfs_set_super_csum_type(&super, cfg->csum_type); btrfs_set_super_chunk_root_generation(&super, 1); btrfs_set_super_cache_generation(&super, -1); btrfs_set_super_incompat_flags(&super, cfg->features); diff --git a/mkfs/main.c b/mkfs/main.c index aa13adea..11e4242f 100644 --- a/mkfs/main.c +++ b/mkfs/main.c @@ -341,6 +341,8 @@ static void print_usage(int ret) 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"); + printf("\t--csum TYPE\n"); + printf("\t--checksum TYPE checksum algorithm to use (default: crc32c)\n"); printf("\t-n|--nodesize SIZE size of btree nodes\n"); printf("\t-s|--sectorsize SIZE data block size (may not be mountable by current kernel)\n"); printf("\t-O|--features LIST comma separated list of filesystem features (use '-O list-all' to list features)\n"); @@ -386,6 +388,18 @@ static u64 parse_profile(const char *s) return 0; } +static enum btrfs_csum_type parse_csum_type(const char *s) +{ + if (strcasecmp(s, "crc32c") == 0) { + return BTRFS_CSUM_TYPE_CRC32; + } else { + error("unknown csum type %s", s); + exit(1); + } + /* not reached */ + return 0; +} + static char *parse_label(const char *input) { int len = strlen(input); @@ -832,15 +846,20 @@ int BOX_MAIN(mkfs)(int argc, char **argv) u64 features = BTRFS_MKFS_DEFAULT_FEATURES; struct mkfs_allocation allocation = { 0 }; struct btrfs_mkfs_config mkfs_cfg; + enum btrfs_csum_type csum_type = BTRFS_CSUM_TYPE_CRC32; crc32c_optimization_init(); while(1) { int c; - enum { GETOPT_VAL_SHRINK = 257 }; + enum { GETOPT_VAL_SHRINK = 257, GETOPT_VAL_CHECKSUM }; static const struct option long_options[] = { { "alloc-start", required_argument, NULL, 'A'}, { "byte-count", required_argument, NULL, 'b' }, + { "csum", required_argument, NULL, + GETOPT_VAL_CHECKSUM }, + { "checksum", required_argument, NULL, + GETOPT_VAL_CHECKSUM }, { "force", no_argument, NULL, 'f' }, { "leafsize", required_argument, NULL, 'l' }, { "label", required_argument, NULL, 'L'}, @@ -938,6 +957,9 @@ int BOX_MAIN(mkfs)(int argc, char **argv) case GETOPT_VAL_SHRINK: shrink_rootdir = true; break; + case GETOPT_VAL_CHECKSUM: + csum_type = parse_csum_type(optarg); + break; case GETOPT_VAL_HELP: default: print_usage(c != GETOPT_VAL_HELP); @@ -1177,6 +1199,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv) mkfs_cfg.sectorsize = sectorsize; mkfs_cfg.stripesize = stripesize; mkfs_cfg.features = features; + mkfs_cfg.csum_type = csum_type; ret = make_btrfs(fd, &mkfs_cfg); if (ret) {