Hi, In ext4 with ^huge_file, s_maxbytes is 2199023251456. But when I create a file size of 2199023251456 bytes, i_size and i_blocks are corrupted. If a file size of 2TB is created, i_blocks including metadata blocks will be over 32bit. So ext4_inode_blocks_set returns EFBIG, and i_size and i_blocks are not updated in ext4_do_update_inode. e.g. fallocate ext4_fallocate ext4_map_blocks ext4_falloc_update_inode ext4_mark_inode_dirty ext4_do_update_inode ext4_inode_blocks_set <---- error # uname -a Linux mcds1 3.0.0 #2 SMP Mon Aug 8 17:58:28 JST 2011 x86_64 x86_64 x86_64 GNU/Linux # mkfs -t ext4 -O ^huge_file /dev/vg0/lv0 # mount /dev/vg0/lv0 /mnt/mp1 # fallocate -o 0 -l 2199023251456 /mnt/mp1/testfile # stat /mnt/mp1/testfile File: `/mnt/mp1/testfile' Size: 2199023251456 Blocks: 4294967688 IO Block: 4096 regular file Device: fd00h/64768d Inode: 12 Links: 1 Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2011-08-09 10:20:31.008699267 +0900 Modify: 2011-08-09 10:20:31.008699267 +0900 Change: 2011-08-09 10:20:42.769699811 +0900 # umount /mnt/mp1 # e2fsck -ttf /dev/vg0/lv0 e2fsck 1.41.12 (17-May-2010) Pass 1: Checking inodes, blocks, and sizes Inode 12, i_size is 2198888873984, should be 2199023251456. Fix<y>? yes Inode 12, i_blocks is 4294705232, should be 4294967688. Fix<y>? yes : -- Utako Kusaka -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html