From: Subranshu Patel Subject: Type of filesystem block Date: Sun, 24 Mar 2013 22:05:12 +0530 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE To: linux-ext4@vger.kernel.org Return-path: Received: from mail-qe0-f50.google.com ([209.85.128.50]:55760 "EHLO mail-qe0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754274Ab3CXQt1 convert rfc822-to-8bit (ORCPT ); Sun, 24 Mar 2013 12:49:27 -0400 Received: by mail-qe0-f50.google.com with SMTP id k5so2991012qej.37 for ; Sun, 24 Mar 2013 09:49:25 -0700 (PDT) Sender: linux-ext4-owner@vger.kernel.org List-ID: Query related to finding the block usage information of metadata blocks in ext4 filesystem. Using debugfs testb command I can check whether a particular filesystem block is used or not. # debugfs -R "testb 171428" /dev/sdd4 debugfs 1.41.12 (17-May-2010) Block 171428 marked in use Also its icheck command prints the inode associated, if any, with a filesystem block. # debugfs -R "icheck 171428" /dev/sdd4 debugfs 1.41.12 (17-May-2010) Block Inode number 171428 65152 But I don=E2=80=99t find any debugfs command which can show similar bl= ock usage information about metadata blocks, whether it is a superblock, or inode bitmap block or block group descriptor, etc. Is there any way to extract the usage information of metadata blocks in ext4 filesystem ? -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html