Exchange following code block solve my problem: --- shlibs/blkid/src/probers/ext.c.orig 2009-07-31 16:40:28.837616263 +0800 +++ shlibs/blkid/src/probers/ext.c 2009-07-31 16:40:40.356804616 +0800 @@ -483,2 +483,2 @@ if (fi & EXT3_FEATURE_INCOMPAT_JOURNAL_DEV) return -BLKID_ERR_PARAM; - /* Ext4 has at least one feature which ext3 doesn't understand */ - if (!(frc & EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) && - !(fi & EXT3_FEATURE_INCOMPAT_UNSUPPORTED)) - return -BLKID_ERR_PARAM; - /* * If the filesystem does not have a journal and ext2 is not * present, then force this to be detected as an ext2 @@ -498,2 +493,2 @@ get_linux_version() >= EXT4_SUPPORTS_EXT2) goto force_ext4; + /* Ext4 has at least one feature which ext3 doesn't understand */ + if (!(frc & EXT3_FEATURE_RO_COMPAT_UNSUPPORTED) && + !(fi & EXT3_FEATURE_INCOMPAT_UNSUPPORTED)) + return -BLKID_ERR_PARAM; + /* * If the filesystem is a OK for use by in-development * filesystem code, and ext4dev is supported or ext4 is not