Just for completeness's sake, can you apply the following patch to dump, and then try doing a benchmark run using dump on ext4? I'm curious how it would compare. - Ted Index: dump-0.4b41/dump/traverse.c =================================================================== --- dump-0.4b41.orig/dump/traverse.c +++ dump-0.4b41/dump/traverse.c @@ -157,14 +157,6 @@ int dump_fs_open(const char *disk, ext2_ retval = EXT2_ET_UNSUPP_FEATURE; ext2fs_close(*fs); } - else if ((retval = es->s_feature_incompat & - ~(EXT2_LIB_FEATURE_INCOMPAT_SUPP | - EXT3_FEATURE_INCOMPAT_RECOVER))) { - msg("Unsupported feature(s) 0x%x in filesystem\n", - retval); - retval = EXT2_ET_UNSUPP_FEATURE; - ext2fs_close(*fs); - } else { if (es->s_feature_compat & EXT3_FEATURE_COMPAT_HAS_JOURNAL && -- 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