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Thread: Everything working for a year and suddently the HD doesn't mount

  1. #1

    Unhappy Everything working for a year and suddently the HD doesn't mount

    Hello,
    Well something weird happened and I'm looking for advices. My setup is a WL500gp, WD 400GB and Wengi's tutorial (followed at the letter).
    I have been using this for a year, my torrents are downloaded directly to the HD, the drive is accessible from Windows, I have a ftp server running and an http server.
    Yesterday, I wanted to unzip a torrent file and during the process Samba crashed. I tried to reboot the router (connected on ssh) but something was stopping it from rebooting. I unplugged the router and plugged it back. Since, it's like my data partition (398GB) is gone. Windows doesn't see it, ftp server is not running. In command line, I can access /tmp/harddisk but there is only one folder there, transmission. The rest is gone. I had 300GB of data in there....

    To see if the problem was a mount related issue, I connected the HD to another machine running Ubuntu. Ubuntu can see the HD, the 3 partitions, it can open the /opt but can't open the data partition. I get the following error:

    Cannot mount volume
    mount:wrong fs type, bad option, bad superblock on /dev/sdc3, missing codepage or helper program, or other error. in some cases useful info is found in syslog -try dmesg|tail or so

    What should I do? I don't think the disk could have been wiped out clean, maybe there is something wrong and it cannot mount... I just hope it's not a HD failure... :-(

    The only thing that matters to me at this stage is to recover as much data as possible. Any suggestions on how to achieve this?

    Thanks,
    Yann

  2. #2
    Join Date
    Sep 2007
    Location
    czech republic
    Posts
    182
    Quote Originally Posted by bibi-phoque View Post
    The only thing that matters to me at this stage is to recover as much data as possible. Any suggestions on how to achieve this?
    i am using this geek's 256KB software to backup partitions (yes u can backup EXT3 in win), better use some linux backup tool like dd (but i am windowsman)
    http://www.drivesnapshot.de/en/down.htm
    after backup all partition except swap, from ubuntu run e2fsck -f -p /dev/*** for all partitions you have.
    Last edited by gouryella; 17-04-2009 at 18:32.
    RT-N13u dd-wrt | Toshiba 2.5" 160GB | pxe boot server

  3. #3

    thanks

    thanks for the tips, I didnt know I could backup an ext3 partition under windows. I definitly have to try this software once I find another HD big enough to store the backup.
    Regarding e2fsck -f -p /dev/*** , is there a chance that this would erase data? Also, can this be run from the asus instead of ubuntu?

    Cheers,
    Yann

  4. #4
    Join Date
    Sep 2007
    Location
    czech republic
    Posts
    182
    Quote Originally Posted by bibi-phoque View Post
    thanks for the tips, I didnt know I could backup an ext3 partition under windows. I definitly have to try this software once I find another HD big enough to store the backup.
    Regarding e2fsck -f -p /dev/*** , is there a chance that this would erase data? Also, can this be run from the asus instead of ubuntu?

    Cheers,
    Yann
    it can be run inside of asus(but -p may be false), kill all running aplications, umount drive by
    Code:
    pre-shutdown
    umount /opt
    umount /tmp/harddisk
    e2fsck -f  /dev/scsi/host0/bus0/target0/lun0/part (device by fdisk -l)
    answer (y) for repair
    yes possible loose some data, not erase, only repair filesystem like scandisk or chkdsk!
    Last edited by gouryella; 18-04-2009 at 15:34.
    RT-N13u dd-wrt | Toshiba 2.5" 160GB | pxe boot server

  5. #5
    Thanks!
    Will give this a try when I come back home tomorrow.
    Cheers,
    Yann

  6. #6
    hum...it doesn't look good. Here is what I'm getting with this command:

    e2fsck 1.38 (30-Jun-2005)
    Group descriptors look bad... trying backup blocks...
    Block bitmap for group 640 is not in group. (block 265269)
    Relocate<y>? y
    yes

    Inode bitmap for group 640 is not in group. (block 268789)
    Relocate<y>? yes

    Inode table for group 640 is not in group. (block 269925)
    WARNING: SEVERE DATA LOSS POSSIBLE.
    Relocate<y>?


    I pressed yes all the way, but even after rebooting my files are not there...I'm loosing hope... What else could I try?

  7. #7
    Join Date
    Sep 2007
    Location
    czech republic
    Posts
    182
    i know good software for recovering files, partitions, etc: http://www.cgsecurity.org/wiki/TestDisk but it is running in command line and you must know what are you dooing.

    backup is your salvation
    RT-N13u dd-wrt | Toshiba 2.5" 160GB | pxe boot server

  8. #8

    Smile it worked!

    Well thanks, I think I got most of my data back. For some reason, doing to pre-shutdown script was stopping stuff that shouldn't be stopped, because e2fsck would just die with a "no response from sender" message. Instead, I just unmounted /opt, and stopped most applications.
    Running e2fsk, I pressed [Enter] for a very long time and once complete I rebooted. I can see most of my files now, ftp server and web server are up and running. Transmission doesn't start at reboot but this is a detail. I'm glad I got my stuff back!

    Thanks a million!

    Yann

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