diff mbox

[v4] btrfs-progs: btrfs-convert: Add larger device support

Message ID 20170603095745.GA4730@giis.co.in (mailing list archive)
State New, archived
Headers show

Commit Message

Lakshmipathi.G June 3, 2017, 9:57 a.m. UTC
With larger file system (in this case its 22TB), ext2fs_open() returns
EXT2_ET_CANT_USE_LEGACY_BITMAPS error message with ext2fs_read_block_bitmap().

To overcome this issue, (a) we need pass EXT2_FLAG_64BITS flag with ext2fs_open.
(b) use 64-bit functions like ext2fs_get_block_bitmap_range2,
ext2fs_inode_data_blocks2,ext2fs_read_ext_attr2. (c) use 64bit types with
btrfs_convert_context fields.

bug: https://bugzilla.kernel.org/show_bug.cgi?id=194795
Signed-off-by: Lakshmipathi.G <lakshmipathi.g@giis.co.in>
---
 convert/common.h      |  8 ++++----
 convert/source-ext2.c | 11 ++++++-----
 2 files changed, 10 insertions(+), 9 deletions(-)

Comments

David Sterba June 26, 2017, 12:47 p.m. UTC | #1
On Sat, Jun 03, 2017 at 03:27:45PM +0530, Lakshmipathi.G wrote:
> With larger file system (in this case its 22TB), ext2fs_open() returns
> EXT2_ET_CANT_USE_LEGACY_BITMAPS error message with ext2fs_read_block_bitmap().
> 
> To overcome this issue, (a) we need pass EXT2_FLAG_64BITS flag with ext2fs_open.
> (b) use 64-bit functions like ext2fs_get_block_bitmap_range2,
> ext2fs_inode_data_blocks2,ext2fs_read_ext_attr2. (c) use 64bit types with
> btrfs_convert_context fields.
> 
> bug: https://bugzilla.kernel.org/show_bug.cgi?id=194795
> Signed-off-by: Lakshmipathi.G <lakshmipathi.g@giis.co.in>

Applied, thanks.

> --- a/convert/common.h
> +++ b/convert/common.h
> @@ -30,10 +30,10 @@ struct btrfs_mkfs_config;
>  
>  struct btrfs_convert_context {
>  	u32 blocksize;
> -	u32 first_data_block;
> -	u32 block_count;
> -	u32 inodes_count;
> -	u32 free_inodes_count;
> +	u64 first_data_block;
> +	u64 block_count;
> +	u64 inodes_count;
> +	u64 free_inodes_count;

I've split this change from the patch as it does not logically belong to
the same patch, altough the change is simple.
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Lakshmipathi.G June 27, 2017, 3:09 a.m. UTC | #2
> > -	u32 free_inodes_count;
> > +	u64 first_data_block;
> > +	u64 block_count;
> > +	u64 inodes_count;
> > +	u64 free_inodes_count;
> 
> I've split this change from the patch as it does not logically belong to
> the same patch, altough the change is simple.

Okay sure, thanks. 

Cheers.
Lakshmipathi.G
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diff mbox

Patch

diff --git a/convert/common.h b/convert/common.h
index 0d3adea..2f4ea48 100644
--- a/convert/common.h
+++ b/convert/common.h
@@ -30,10 +30,10 @@  struct btrfs_mkfs_config;
 
 struct btrfs_convert_context {
 	u32 blocksize;
-	u32 first_data_block;
-	u32 block_count;
-	u32 inodes_count;
-	u32 free_inodes_count;
+	u64 first_data_block;
+	u64 block_count;
+	u64 inodes_count;
+	u64 free_inodes_count;
 	u64 total_bytes;
 	char *volume_name;
 	const struct btrfs_convert_operations *convert_ops;
diff --git a/convert/source-ext2.c b/convert/source-ext2.c
index 1b0576b..275cb89 100644
--- a/convert/source-ext2.c
+++ b/convert/source-ext2.c
@@ -34,8 +34,9 @@  static int ext2_open_fs(struct btrfs_convert_context *cctx, const char *name)
 	ext2_filsys ext2_fs;
 	ext2_ino_t ino;
 	u32 ro_feature;
+	int open_flag = EXT2_FLAG_SOFTSUPP_FEATURES | EXT2_FLAG_64BITS;
 
-	ret = ext2fs_open(name, 0, 0, 0, unix_io_manager, &ext2_fs);
+	ret = ext2fs_open(name, open_flag, 0, 0, unix_io_manager, &ext2_fs);
 	if (ret) {
 		fprintf(stderr, "ext2fs_open: %s\n", error_message(ret));
 		return -1;
@@ -148,7 +149,7 @@  static int ext2_read_used_space(struct btrfs_convert_context *cctx)
 		return -ENOMEM;
 
 	for (i = 0; i < fs->group_desc_count; i++) {
-		ret = ext2fs_get_block_bitmap_range(fs->block_map, blk_itr,
+		ret = ext2fs_get_block_bitmap_range2(fs->block_map, blk_itr,
 						block_nbytes * 8, block_bitmap);
 		if (ret) {
 			error("fail to get bitmap from ext2, %s",
@@ -353,7 +354,7 @@  static int ext2_create_symlink(struct btrfs_trans_handle *trans,
 	int ret;
 	char *pathname;
 	u64 inode_size = btrfs_stack_inode_size(btrfs_inode);
-	if (ext2fs_inode_data_blocks(ext2_fs, ext2_inode)) {
+	if (ext2fs_inode_data_blocks2(ext2_fs, ext2_inode)) {
 		btrfs_set_stack_inode_size(btrfs_inode, inode_size + 1);
 		ret = ext2_create_file_extents(trans, root, objectid,
 				btrfs_inode, ext2_fs, ext2_ino,
@@ -627,9 +628,9 @@  static int ext2_copy_extended_attrs(struct btrfs_trans_handle *trans,
 		ret = -ENOMEM;
 		goto out;
 	}
-	err = ext2fs_read_ext_attr(ext2_fs, ext2_inode->i_file_acl, buffer);
+	err = ext2fs_read_ext_attr2(ext2_fs, ext2_inode->i_file_acl, buffer);
 	if (err) {
-		fprintf(stderr, "ext2fs_read_ext_attr: %s\n",
+		fprintf(stderr, "ext2fs_read_ext_attr2: %s\n",
 			error_message(err));
 		ret = -1;
 		goto out;