From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from relay.sgi.com (relay3.corp.sgi.com [198.149.34.15]) by oss.sgi.com (Postfix) with ESMTP id 7B16429DFB for ; Sun, 22 Sep 2013 22:34:30 -0500 (CDT) Received: from cuda.sgi.com (cuda2.sgi.com [192.48.176.25]) by relay3.corp.sgi.com (Postfix) with ESMTP id 0D003AC003 for ; Sun, 22 Sep 2013 20:34:29 -0700 (PDT) Received: from e28smtp05.in.ibm.com (e28smtp05.in.ibm.com [122.248.162.5]) by cuda.sgi.com with ESMTP id 1GGmIMMmd8Jm0MyF (version=TLSv1 cipher=AES256-SHA bits=256 verify=NO) for ; Sun, 22 Sep 2013 20:34:24 -0700 (PDT) Received: from /spool/local by e28smtp05.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 23 Sep 2013 09:04:20 +0530 Received: from d28relay02.in.ibm.com (d28relay02.in.ibm.com [9.184.220.59]) by d28dlp03.in.ibm.com (Postfix) with ESMTP id BE7FB1258051 for ; Mon, 23 Sep 2013 09:04:29 +0530 (IST) Received: from d28av03.in.ibm.com (d28av03.in.ibm.com [9.184.220.65]) by d28relay02.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r8N3aZD441091274 for ; Mon, 23 Sep 2013 09:06:35 +0530 Received: from d28av03.in.ibm.com (localhost [127.0.0.1]) by d28av03.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id r8N3YIum008823 for ; Mon, 23 Sep 2013 09:04:18 +0530 Message-ID: <1379907255.3246.4.camel@ThinkPad-T5421> Subject: [RFC PATCH] xfsprogs: add hex offset for superblock structure From: Li Zhong Date: Mon, 23 Sep 2013 11:34:15 +0800 Mime-Version: 1.0 List-Id: XFS Filesystem from SGI List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: xfs-bounces@oss.sgi.com Sender: xfs-bounces@oss.sgi.com To: xfsprogs Cc: Chandra Seetharaman It would be a little bit easier if somebody uses something like hexdump to check the superblock of one device. Signed-off-by: Li Zhong --- include/xfs_sb.h | 34 +++++++++++++++++----------------- 1 file changed, 17 insertions(+), 17 deletions(-) diff --git a/include/xfs_sb.h b/include/xfs_sb.h index c8d8898..bb9e2df 100644 --- a/include/xfs_sb.h +++ b/include/xfs_sb.h @@ -185,27 +185,27 @@ typedef struct xfs_sb { * Must be padded to 64 bit alignment. */ typedef struct xfs_dsb { - __be32 sb_magicnum; /* magic number == XFS_SB_MAGIC */ +/*00*/ __be32 sb_magicnum; /* magic number == XFS_SB_MAGIC */ __be32 sb_blocksize; /* logical block size, bytes */ __be64 sb_dblocks; /* number of data blocks */ - __be64 sb_rblocks; /* number of realtime blocks */ +/*10*/ __be64 sb_rblocks; /* number of realtime blocks */ __be64 sb_rextents; /* number of realtime extents */ - uuid_t sb_uuid; /* file system unique id */ - __be64 sb_logstart; /* starting block of log if internal */ +/*20*/ uuid_t sb_uuid; /* file system unique id */ +/*30*/ __be64 sb_logstart; /* starting block of log if internal */ __be64 sb_rootino; /* root inode number */ - __be64 sb_rbmino; /* bitmap inode for realtime extents */ +/*40*/ __be64 sb_rbmino; /* bitmap inode for realtime extents */ __be64 sb_rsumino; /* summary inode for rt bitmap */ - __be32 sb_rextsize; /* realtime extent size, blocks */ +/*50*/ __be32 sb_rextsize; /* realtime extent size, blocks */ __be32 sb_agblocks; /* size of an allocation group */ __be32 sb_agcount; /* number of allocation groups */ __be32 sb_rbmblocks; /* number of rt bitmap blocks */ - __be32 sb_logblocks; /* number of log blocks */ +/*60*/ __be32 sb_logblocks; /* number of log blocks */ __be16 sb_versionnum; /* header version == XFS_SB_VERSION */ __be16 sb_sectsize; /* volume sector size, bytes */ __be16 sb_inodesize; /* inode size, bytes */ __be16 sb_inopblock; /* inodes per block */ - char sb_fname[12]; /* file system name */ - __u8 sb_blocklog; /* log2 of sb_blocksize */ +/*6C*/ char sb_fname[12]; /* file system name */ +/*78*/ __u8 sb_blocklog; /* log2 of sb_blocksize */ __u8 sb_sectlog; /* log2 of sb_sectsize */ __u8 sb_inodelog; /* log2 of sb_inodesize */ __u8 sb_inopblog; /* log2 of sb_inopblock */ @@ -219,22 +219,22 @@ typedef struct xfs_dsb { * want to change their layout, make sure you fix the * code in xfs_trans_apply_sb_deltas(). */ - __be64 sb_icount; /* allocated inodes */ +/*80*/ __be64 sb_icount; /* allocated inodes */ __be64 sb_ifree; /* free inodes */ - __be64 sb_fdblocks; /* free data blocks */ +/*90*/ __be64 sb_fdblocks; /* free data blocks */ __be64 sb_frextents; /* free realtime extents */ /* * End contiguous fields. */ - __be64 sb_uquotino; /* user quota inode */ +/*A0*/ __be64 sb_uquotino; /* user quota inode */ __be64 sb_gquotino; /* group quota inode */ - __be16 sb_qflags; /* quota flags */ +/*B0*/ __be16 sb_qflags; /* quota flags */ __u8 sb_flags; /* misc. flags */ __u8 sb_shared_vn; /* shared version number */ __be32 sb_inoalignmt; /* inode chunk alignment, fsblocks */ __be32 sb_unit; /* stripe or raid unit */ __be32 sb_width; /* stripe or raid width */ - __u8 sb_dirblklog; /* log2 of dir block size (fsbs) */ +/*C0*/ __u8 sb_dirblklog; /* log2 of dir block size (fsbs) */ __u8 sb_logsectlog; /* log2 of the log sector size */ __be16 sb_logsectsize; /* sector size for the log, bytes */ __be32 sb_logsunit; /* stripe unit size for the log */ @@ -250,16 +250,16 @@ typedef struct xfs_dsb { /* version 5 superblock fields start here */ /* feature masks */ - __be32 sb_features_compat; +/*D0*/ __be32 sb_features_compat; __be32 sb_features_ro_compat; __be32 sb_features_incompat; __be32 sb_features_log_incompat; - __le32 sb_crc; /* superblock crc */ +/*E0*/ __le32 sb_crc; /* superblock crc */ __be32 sb_pad; __be64 sb_pquotino; /* project quota inode */ - __be64 sb_lsn; /* last write sequence */ +/*F0*/ __be64 sb_lsn; /* last write sequence */ /* must be padded to 64 bit alignment */ } xfs_dsb_t; -- 1.8.1.4 _______________________________________________ xfs mailing list xfs@oss.sgi.com http://oss.sgi.com/mailman/listinfo/xfs