From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pigeon.gentoo.org ([208.92.234.80] helo=lists.gentoo.org) by finch.gentoo.org with esmtp (Exim 4.60) (envelope-from ) id 1Mp8Zn-0001y4-Jd for garchives@archives.gentoo.org; Sat, 19 Sep 2009 22:38:43 +0000 Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 9D62BE0931; Sat, 19 Sep 2009 22:38:41 +0000 (UTC) Received: from mail-yw0-f196.google.com (mail-yw0-f196.google.com [209.85.211.196]) by pigeon.gentoo.org (Postfix) with ESMTP id 78689E0931 for ; Sat, 19 Sep 2009 22:38:41 +0000 (UTC) Received: by ywh34 with SMTP id 34so2638524ywh.10 for ; Sat, 19 Sep 2009 15:38:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:in-reply-to:references :date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=j+E3+OFZtyIbSWr7NJaE7gMXM87FZrD7NJ2EHrhWKxA=; b=DQChZJenGEiMmbObA1HKBdMr6IV5dILuGyQhaOaq7/sEJnsMCP9hTbjg+H9HoVTdsn afSDoF8JkxvpbMNHi/FRKNo3xyzASrlVI16j9mJDiH+dgt5vMO8aqg+eQ7kKbCzyRQzQ GoLKoxwgtRgma2cBIcsGslkl1PrkAd6Yy01VM= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type:content-transfer-encoding; b=BoBGCAaZtp977FzrvO9yI2x8dFLpe9kPO3k11H4SdpMM2pm7ReCNNEXeOa4P4nxoUk aU2TCMUw8xONO/UwaOtv1mRYABfqqlcypspL5k8+Dy5HBLxUpmAEc7g6VdQjZTo0HEUy aGA9vDXWLkmbwWsXb/jJ7N1vIXJYPgm7Zpmsw= Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.151.25.7 with SMTP id c7mr5739318ybj.236.1253399921215; Sat, 19 Sep 2009 15:38:41 -0700 (PDT) In-Reply-To: <5bdc1c8b0909191521j72388919w35e54b577b55ae60@mail.gmail.com> References: <5bdc1c8b0909191521j72388919w35e54b577b55ae60@mail.gmail.com> Date: Sat, 19 Sep 2009 15:38:41 -0700 Message-ID: <5bdc1c8b0909191538h2ebf7697s742f2ee90bb9752a@mail.gmail.com> Subject: [gentoo-user] Re: USB drive dead? (Commands to check?) From: Mark Knecht To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: 0efa5736-fa09-43b1-b25a-8b88f114aa7f X-Archives-Hash: 8f2422430f91bf05da39b2adcfe08786 On Sat, Sep 19, 2009 at 3:21 PM, Mark Knecht wrote: > Hi, > =C2=A0 I seem to have lost an external USB drive I've been using on my > MythTV backend server for video storage. What commands can I try to > get it to wake up or at least show me what's working and what isn't? > The drive shows under fdisk /dev/sda. I can see the large partition, > and it seems to be the right size, according to fdisk anyway, but I > cannot mount it using mount, and so far I cannot get e2fsck to do > anything. Both of these fail: > > > mount -t ext2 /dev/sda1 /video > mount -t ext3 /dev/sda1 /video > > =C2=A0 I have power cycled the drive and I've rebooted the MacMini. Nothi= ng changed. > > Thanks in advance, > Mark > > MacMini ~ # fdisk /dev/sda > > The number of cylinders for this disk is set to 19929. > There is nothing wrong with that, but this is larger than 1024, > and could in certain setups cause problems with: > 1) software that runs at boot time (e.g., old versions of LILO) > 2) booting and partitioning software from other OSs > =C2=A0 (e.g., DOS FDISK, OS/2 FDISK) > > Command (m for help): p > > Disk /dev/sda: 163.9 GB, 163928604672 bytes > 255 heads, 63 sectors/track, 19929 cylinders > Units =3D cylinders of 16065 * 512 =3D 8225280 bytes > Disk identifier: 0xa9b5c6b5 > > =C2=A0 Device Boot =C2=A0 =C2=A0 =C2=A0Start =C2=A0 =C2=A0 =C2=A0 =C2=A0 = End =C2=A0 =C2=A0 =C2=A0Blocks =C2=A0 Id =C2=A0System > /dev/sda1 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 1 =C2=A0 =C2= =A0 =C2=A0 19929 =C2=A0 160079661 =C2=A0 83 =C2=A0Linux > > Command (m for help): > > > > MacMini ~ # df > Filesystem =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 1K-blocks =C2=A0 =C2=A0 =C2= =A0Used Available Use% Mounted on > /dev/hda4 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 75890040 =C2=A0371694= 16 =C2=A034865560 =C2=A052% / > udev =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0 10240 =C2=A0 =C2=A0 =C2=A0 156 =C2=A0 =C2=A0 10084 =C2=A0 2% /dev > shm =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= 257396 =C2=A0 =C2=A0 =C2=A0 =C2=A0 0 =C2=A0 =C2=A0257396 =C2=A0 0% /dev/sh= m > MacMini ~ # fsck -t ext3 /dev/sda > fsck 1.41.3 (12-Oct-2008) > e2fsck 1.41.3 (12-Oct-2008) > fsck.ext3: Superblock invalid, trying backup blocks... > fsck.ext3: Bad magic number in super-block while trying to open /dev/sda > > The superblock could not be read or does not describe a correct ext2 > filesystem. =C2=A0If the device is valid and it really contains an ext2 > filesystem (and not swap or ufs or something else), then the superblock > is corrupt, and you might try running e2fsck with an alternate superblock= : > =C2=A0 =C2=A0e2fsck -b 8193 > > MacMini ~ # e2fsck -b 8193 /dev/sda > e2fsck 1.41.3 (12-Oct-2008) > e2fsck: Bad magic number in super-block while trying to open /dev/sda > > The superblock could not be read or does not describe a correct ext2 > filesystem. =C2=A0If the device is valid and it really contains an ext2 > filesystem (and not swap or ufs or something else), then the superblock > is corrupt, and you might try running e2fsck with an alternate superblock= : > =C2=A0 =C2=A0e2fsck -b 8193 > > MacMini ~ # fsck -t ext3 /dev/sda1 > fsck 1.41.3 (12-Oct-2008) > e2fsck 1.41.3 (12-Oct-2008) > fsck.ext3: Attempt to read block from filesystem resulted in short > read while tr =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0ying to open /dev/= sda1 > Could this be a zero-length partition? > MacMini ~ # e2fsck -b 8193 /dev/sda1 > e2fsck 1.41.3 (12-Oct-2008) > e2fsck: Bad magic number in super-block while trying to open /dev/sda1 > > The superblock could not be read or does not describe a correct ext2 > filesystem. =C2=A0If the device is valid and it really contains an ext2 > filesystem (and not swap or ufs or something else), then the superblock > is corrupt, and you might try running e2fsck with an alternate superblock= : > =C2=A0 =C2=A0e2fsck -b 8193 > > MacMini ~ # e2fsck -b 8193 /dev/sda > e2fsck 1.41.3 (12-Oct-2008) > e2fsck: Bad magic number in super-block while trying to open /dev/sda > > The superblock could not be read or does not describe a correct ext2 > filesystem. =C2=A0If the device is valid and it really contains an ext2 > filesystem (and not swap or ufs or something else), then the superblock > is corrupt, and you might try running e2fsck with an alternate superblock= : > =C2=A0 =C2=A0e2fsck -b 8193 > > MacMini ~ # > A little more info: Buffer I/O error on device sda, logical block 12 sd 0:0:0:0: [sda] Result: hostbyte=3D0x00 driverbyte=3D0x08 sd 0:0:0:0: [sda] Sense Key : 0x3 [current] sd 0:0:0:0: [sda] ASC=3D0x4b ASCQ=3D0x0 end_request: I/O error, dev sda, sector 96 Buffer I/O error on device sda, logical block 12 sd 0:0:0:0: [sda] Result: hostbyte=3D0x00 driverbyte=3D0x08 sd 0:0:0:0: [sda] Sense Key : 0x3 [current] sd 0:0:0:0: [sda] ASC=3D0x4b ASCQ=3D0x0 end_request: I/O error, dev sda, sector 96 Buffer I/O error on device sda, logical block 12 sd 0:0:0:0: [sda] Result: hostbyte=3D0x00 driverbyte=3D0x08 sd 0:0:0:0: [sda] Sense Key : 0x3 [current] sd 0:0:0:0: [sda] ASC=3D0x4b ASCQ=3D0x0 end_request: I/O error, dev sda, sector 96 MacMini ~ # fsck -t ext3 /dev/sda1 fsck 1.41.3 (12-Oct-2008) e2fsck 1.41.3 (12-Oct-2008) fsck.ext3: Attempt to read block from filesystem resulted in short read while trying to open /dev/sda1 Could this be a zero-length partition? MacMini ~ # end_request: I/O error, dev sda, sector 95 __ratelimit: 58 callbacks suppressed Buffer I/O error on device sda1, logical block 16 Buffer I/O error on device sda1, logical block 17 Buffer I/O error on device sda1, logical block 18 Buffer I/O error on device sda1, logical block 19 Buffer I/O error on device sda1, logical block 20 Buffer I/O error on device sda1, logical block 21 Buffer I/O error on device sda1, logical block 22 Buffer I/O error on device sda1, logical block 23 Buffer I/O error on device sda1, logical block 24 Buffer I/O error on device sda1, logical block 25 sd 0:0:0:0: [sda] Result: hostbyte=3D0x00 driverbyte=3D0x08 sd 0:0:0:0: [sda] Sense Key : 0x3 [current] sd 0:0:0:0: [sda] ASC=3D0x4b ASCQ=3D0x0 end_request: I/O error, dev sda, sector 95 __ratelimit: 86 callbacks suppressed Buffer I/O error on device sda1, logical block 16 Buffer I/O error on device sda1, logical block 17 Buffer I/O error on device sda1, logical block 18 Buffer I/O error on device sda1, logical block 19 Buffer I/O error on device sda1, logical block 20 Buffer I/O error on device sda1, logical block 21 Buffer I/O error on device sda1, logical block 22 Buffer I/O error on device sda1, logical block 23 Buffer I/O error on device sda1, logical block 24 Buffer I/O error on device sda1, logical block 25 MacMini ~ # I could try reinstalling the file system but I had a few backups on this drive for other systems. (non-critical, but possibly useful) I'd like to be sure I cannot recover them before I blow everything away. Thanks, Mark