From owner-freebsd-current Tue Sep 3 12:55:37 2002 Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3DAD537B400 for ; Tue, 3 Sep 2002 12:55:35 -0700 (PDT) Received: from mailout10.sul.t-online.com (mailout10.sul.t-online.com [194.25.134.21]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8F91543E65 for ; Tue, 3 Sep 2002 12:55:34 -0700 (PDT) (envelope-from D.Rock@t-online.de) Received: from fwd07.sul.t-online.de by mailout10.sul.t-online.com with smtp id 17mJlt-0000aV-03; Tue, 03 Sep 2002 21:55:33 +0200 Received: from dialin.t-online.de (340029380333-0001@[217.224.23.110]) by fmrl07.sul.t-online.com with esmtp id 17mJlc-23Ey6SC; Tue, 3 Sep 2002 21:55:16 +0200 Received: from t-online.de (server [172.23.7.1]) by dialin.t-online.de (8.11.6+Sun/8.11.6/Rock) with ESMTP id g83JlKv77162 for ; Tue, 3 Sep 2002 21:47:20 +0200 (CEST) Message-ID: <3D7511C8.3080306@t-online.de> Date: Tue, 03 Sep 2002 21:47:20 +0200 From: "D. Rock" User-Agent: Mozilla/5.0 (X11; U; SunOS i86pc; en-US; rv:0.9.4.1) Gecko/20020518 Netscape6/6.2.3 X-Accept-Language: en-us MIME-Version: 1.0 To: current@freebsd.org Subject: fsck cannot find superblock Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Sender: 340029380333-0001@t-dialin.net Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Hi, with 'uncommon' block sizes fsck seems to have problems finding the superblock: # newfs -i 10240 -b 4096 -f 512 /dev/ad1d Reduced frags per cylinder group from 26208 to 26200 to enlarge last cyl group /dev/ad1d: 409.6MB (838860 sectors) block size 4096, fragment size 512 using 33 cylinder groups of 12.79MB, 3275 blks, 1312 inodes. super-block backups (for fsck -b #) at: 32, 26232, 52432, 78632, 104832, 131032, 157232, 183432, 209632, 235832, 262032, 288232, 314432, 340632, 366832, 393032, 419232, 445432, 471632, 497832, 524032, 550232, 576432, 602632, 628832, 655032, 681232, 707432, 733632, 759832, 786032, 812232, 838432 # fsck /dev/ad1d ** /dev/ad1d Cannot find file system superblock LOOK FOR ALTERNATE SUPERBLOCKS? [yn] n If I type 'y' fsck will find an alternate superblock at 16 (not 32, as printed during newfs). The number of inodes, fragment size don't seem to have an impact, only block size. No problems with block size of 8192 though. Daniel To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message