From: Yongqiang Yang Subject: backup of the last group'descriptor when it is the 1st group of a meta_bg Date: Tue, 27 Mar 2012 22:47:34 +0800 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: "Ted Ts'o" , Andreas Dilger To: Ext4 Developers List Return-path: Received: from mail-yx0-f174.google.com ([209.85.213.174]:62859 "EHLO mail-yx0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753046Ab2C0Orh convert rfc822-to-8bit (ORCPT ); Tue, 27 Mar 2012 10:47:37 -0400 Received: by yenl12 with SMTP id l12so4675313yen.19 for ; Tue, 27 Mar 2012 07:47:37 -0700 (PDT) Sender: linux-ext4-owner@vger.kernel.org List-ID: Hi Ted, Andreas and List, As Andreas pointed out last year, if the last group is the 1st group in a meta bg, then its group desc has no backup. With meta_bg resizing inode is useless, I had a thought that we store a backup group descriptor of the last group in the resizing inode=EF=BC= =9F What's your opinions? Yongqiang. -- 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