From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx1.redhat.com (ext-mx12.extmail.prod.ext.phx2.redhat.com [10.5.110.17]) by int-mx11.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id s0C4YQmW000838 for ; Sat, 11 Jan 2014 23:34:26 -0500 Received: from vm08-mail01.alteeve.ca (mail.alteeve.ca [65.39.153.71]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id s0C4YOkp011378 for ; Sat, 11 Jan 2014 23:34:25 -0500 Message-ID: <52D21B4F.50504@alteeve.ca> Date: Sat, 11 Jan 2014 23:34:23 -0500 From: Digimer MIME-Version: 1.0 References: <1389500888.48728.YahooMailNeo@web161702.mail.bf1.yahoo.com> In-Reply-To: <1389500888.48728.YahooMailNeo@web161702.mail.bf1.yahoo.com> Content-Transfer-Encoding: 7bit Subject: Re: [linux-lvm] Logical Volume Inaccessible Reply-To: LVM general discussion and development List-Id: LVM general discussion and development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , List-Id: Content-Type: text/plain; charset="us-ascii"; format="flowed" To: Tom+Dale , LVM general discussion and development What does 'pvscan; vgscan; lvscan' show? If the LVs show 'inactive', try 'lvchange -ay ', then 'lvscan' should show the LV as 'ACTIVE'. If so, try mounting the LV. On 11/01/14 11:28 PM, Tom+Dale wrote: > > > I am hoping that someone can assist me with a problem that I have on a > single 500GB drive that was partitioned by "Mythdora" a (now defunct) > distribution of Fedora + MythTV. I had this system in use for several > years and recently the motherboard died. When I put the hard disk into a different machine it would not boot up (no surprise); however, I also > was unable to access the partitions from a Knoppix Live CD (I tried both 5.1 and 7.0). When I tried with Knoppix to mount the partitions I > discovered that something is wrong with the partition tables or logical > volumes. Here are some examples of the commands that I tried along with the results. Will you please give me some advice about the best way to recover data from sda2 (the recordings)? Thank you in advance! > -Tom > > --------------------------------------------- > root@Microknoppix:/# fdisk -l > > Disk /dev/sda: 500.1 GB, 500107862016 bytes > 255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors > Units = sectors of 1 * 512 = 512 bytes > Sector size (logical/physical): 512 bytes / 4096 bytes > I/O size (minimum/optimal): 4096 bytes / 4096 bytes > Disk identifier: 0x000537fa > > Device Boot Start End Blocks Id System > /dev/sda1 * 63 409662 204800 83 Linux > Partition 1 does not start on physical sector boundary. > /dev/sda2 409663 976768064 > 488179201 8e Linux LVM > Partition 2 does not start on physical sector boundary. > root@Microknoppix:/# parted -l > Model: ATA WDC WD5000AADS-1 (scsi) > Disk /dev/sda: 500GB > Sector size (logical/physical): 512B/4096B > Partition Table: msdos > > Number Start End Size Type File system Flags > 1 32.3kB 210MB 210MB primary ext4 boot > 2 210MB 500GB 500GB primary lvm > > > Warning: Unable to open /dev/fd0 read-write (Read-only file system). /dev/fd0 > has been opened read-only. > Error: /dev/fd0: unrecognised disk > label > > Warning: Unable to open /dev/sr0 read-write (Read-only file system). /dev/sr0 > has been opened read-only. > Error: /dev/sr0: unrecognised disk label > > Error: /dev/zram0: unrecognised disk label > > Warning: Unable to open /dev/cloop0 read-write (Read-only file system). > /dev/cloop0 has been opened read-only. > Error: /dev/cloop0: unrecognised disk > label > > root@Microknoppix:/# gdisk -l /dev/sda > GPT fdisk (gdisk) version 0.8.5 > > Partition table scan: > MBR: MBR only > BSD: not present > APM: not present > GPT: not present > > > *************************************************************** > Found invalid GPT and valid MBR; converting MBR to GPT format. > *************************************************************** > > Disk /dev/sda: 976773168 sectors, 465.8 GiB > Logical sector size: 512 bytes > Disk identifier (GUID): E9B4E83E-86F3-4843-801E-495E6864F682 > Partition table holds up to 128 entries > First usable sector is 34, last usable sector is 976773134 > Partitions will be aligned on 8-sector boundaries > Total free space is 5099 sectors (2.5 > MiB) > > Number Start (sector) End (sector) Size Code Name > 1 63 409662 200.0 MiB 8300 Linux filesystem > 2 409663 976768064 465.6 GiB 8E00 Linux LVM > root@Microknoppix:/# vgchange -ay > /dev/sda2: read failed after 0 of 1024 at 0: Input/output error > /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error > /dev/sda2: read failed after 0 of 2048 at 0: Input/output error > No volume groups found > root@Microknoppix:/# lvscan > /dev/sda2: read failed after 0 of 1024 at 0: Input/output error > /dev/sda2: read > failed after 0 of 1024 at 4096: Input/output error > /dev/sda2: read failed after 0 of 2048 at 0: Input/output error > No volume groups found > root@Microknoppix:/# lvm lvdisplay > /dev/sda2: read failed after 0 of 1024 at 0: Input/output error > /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error > /dev/sda2: read failed after 0 of 2048 at 0: Input/output error > No volume groups found > root@Microknoppix:/# vgscan --mknodes > Reading all physical volumes. This may take a while... > /dev/sda2: read failed after 0 of 1024 at 0: Input/output error > /dev/sda2: read failed after 0 of 1024 at 4096: Input/output error > /dev/sda2: read failed after 0 of 2048 at 0: Input/output error > No volume groups found > No volume groups found > root@Microknoppix:/# > > _______________________________________________ > linux-lvm mailing list > linux-lvm@redhat.com > https://www.redhat.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ > -- Digimer Papers and Projects: https://alteeve.ca/w/ What if the cure for cancer is trapped in the mind of a person without access to education?