Zhong, Xin
2011-Jun-21 01:45 UTC
[PATCH] btrfs-progs: Improvement for making btrfs image from source directory.
* Initialize ret in btrfs_csum_file_block * Do not abort when xattr is not supported in the source directory * Remove size limitation of 256M * Alloc data chunk in a smaller size (8M) to make btrfs image smaller * Let user specify the btrfs image name Depends on below patch from samsung guys: http://marc.info/?l=linux-btrfs&m=127858068226025&w=2 Signed-off-by: Zhong, Xin <xin.zhong@intel.com> --- file-item.c | 2 +- mkfs.c | 31 ++++++++++++++++--------------- 2 files changed, 17 insertions(+), 16 deletions(-) diff --git a/file-item.c b/file-item.c index 9732282..aed42c3 100644 --- a/file-item.c +++ b/file-item.c @@ -193,7 +193,7 @@ int btrfs_csum_file_block(struct btrfs_trans_handle *trans, struct btrfs_root *root, u64 alloc_end, u64 bytenr, char *data, size_t len) { - int ret; + int ret = 0; struct btrfs_key file_key; struct btrfs_key found_key; u64 next_offset = (u64)-1; diff --git a/mkfs.c b/mkfs.c index 1d403f6..0beafca 100644 --- a/mkfs.c +++ b/mkfs.c @@ -509,6 +509,8 @@ static int add_xattr_item(struct btrfs_trans_handle *trans, ret = llistxattr(file_name, xattr_list, XATTR_LIST_MAX); if (ret < 0) { + if(errno == ENOTSUP) + return 0; fprintf(stderr, "get a list of xattr failed for %s\n", file_name); return ret; @@ -523,8 +525,11 @@ static int add_xattr_item(struct btrfs_trans_handle *trans, ret = getxattr(file_name, cur_name, cur_value, XATTR_SIZE_MAX); if (ret < 0) { - fprintf(stderr, "get a xattr value failed for %s\n", - cur_name); + if(errno == ENOTSUP) + return 0; + fprintf(stderr, "get a xattr value failed for %s attr %s\n", + file_name, cur_name); + return ret; } ret = btrfs_insert_xattr_item(trans, root, cur_name, @@ -540,7 +545,6 @@ static int add_xattr_item(struct btrfs_trans_handle *trans, return ret; } - static int custom_alloc_extent(struct btrfs_root *root, u64 num_bytes, u64 hint_byte, struct btrfs_key *ins) { @@ -905,7 +909,8 @@ static int traverse_directory(struct btrfs_trans_handle *trans, cur_inum, cur_file->d_name); if (ret) { fprintf(stderr, "add_xattr_item failed\n"); - goto fail; + if(ret != -ENOTSUP) + goto fail; } if (S_ISDIR(st.st_mode)) { @@ -964,7 +969,7 @@ static int create_chunks(struct btrfs_trans_handle *trans, u64 chunk_size; u64 meta_type = BTRFS_BLOCK_GROUP_METADATA; u64 data_type = BTRFS_BLOCK_GROUP_DATA; - u64 minimum_data_chunk_size = 64 * 1024 * 1024; + u64 minimum_data_chunk_size = 8 * 1024 * 1024; u64 i; int ret; @@ -1039,7 +1044,6 @@ static u64 size_sourcedir(char *dir_name, u64 sectorsize, char path[512]; char *file_name = "temp_file"; FILE *file; - u64 minimum_data_size = 256 * 1024 * 1024; /* 256MB */ u64 default_chunk_size = 8 * 1024 * 1024; /* 8MB */ u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */ u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */ @@ -1078,9 +1082,6 @@ static u64 size_sourcedir(char *dir_name, u64 sectorsize, *num_of_meta_chunks_ret = num_of_meta_chunks; - if (total_size < minimum_data_size) - total_size = minimum_data_size; - return total_size; } @@ -1132,9 +1133,9 @@ int main(int ac, char **av) char *source_dir = NULL; int source_dir_set = 0; - char *output = "output.img"; u64 num_of_meta_chunks = 0; u64 size_of_data = 0; + u64 source_dir_size = 0; while(1) { int c; @@ -1195,8 +1196,6 @@ int main(int ac, char **av) fprintf(stderr, "Illegal nodesize %u\n", nodesize); exit(1); } - if (source_dir_set) - ac++; ac = ac - optind; if (ac == 0) print_usage(); @@ -1228,17 +1227,19 @@ int main(int ac, char **av) block_count = dev_block_count; } else { ac = 0; - fd = open_target(output); + file = av[optind++]; + fd = open_target(file); if (fd < 0) { fprintf(stderr, "unable to open the %s\n", file); exit(1); } - file = output; first_fd = fd; first_file = file; - block_count = size_sourcedir(source_dir, sectorsize, + source_dir_size = size_sourcedir(source_dir, sectorsize, &num_of_meta_chunks, &size_of_data); + if(block_count < source_dir_size) + block_count = source_dir_size; ret = zero_output_file(fd, block_count, sectorsize); if (ret) { fprintf(stderr, "unable to zero the output file\n"); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html