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Thread: Failure to mount a HDD partition

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  1. Failure to mount a HDD partition

    Hi,

    One of my HDD partition named /dev/sda2 failed to mount in any OS stating that operation not supported, when I tried to mount it through kernel mode, it posts the following error message.

    Invalid format found in block 0
    ReiserFS read locked i node
    I/O failure finding stat data

    Kindly requesting for suitable help if possible.

  2. #2

    Re: Failure to mount a HDD partition

    Quote Originally Posted by prabhuvspj View Post
    Hi,

    One of my HDD partition named /dev/sda2 failed to mount in any OS stating that “operation not supported”, when I tried to mount it through kernel mode, it posts the following error message.

    Invalid format found in block 0
    ReiserFS read locked i node
    I/O failure finding stat data

    Kindly requesting for suitable help if possible.

    Do you know what the filesystem type is on that partition (e.g. is it really ReiserFS)?

    Seems a filesystem check would be a first thing to do (reiserfsck), but with ReiserFS that can mean dataloss... (it's not the most stable filesystem in that regard).

    Also, which OS is this, and which version/service pack level is it on?

    -Willem
    Knowledge Partner (voluntary sysop)
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  3. Re: Failure to mount a HDD partition

    Hello Willem,

    Thanks for your reply.

    in /dev/sda2 is partitioned with ReiserFS only.
    The suse OS installed in it was SLED 10 and SP2

    regards
    Prabhu V.

  4. #4

    Re: Failure to mount a HDD partition

    Quote Originally Posted by prabhuvspj View Post
    in /dev/sda2 is partitioned with ReiserFS only.
    The suse OS installed in it was SLED 10 and SP2
    Hi Prabhu V,

    Then it sounds like running a reiserfsck (using the SLES 10 install disc with the rescue mode option, or an something like an openSUSE live CD) is the way to get things running again.

    Again a reminder that ReiserFS is not know for it's stability and recovery... so depending on how important the data on that partition is to you, you might want to first make an image (using dd or CloneZilla for example) before running the check.
    There is a chance that running the check is all that's needed and your sever will boot normally again.

    Fingers crossed,
    Willem
    Knowledge Partner (voluntary sysop)
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  5. Re: Failure to mount a HDD partition

    Willem,

    Thanks for your message.

    During rescure operation using reiserfsck, i have the following message.

    "The Problem has occured looks like a hardward problem. If you have bad blocks, we advice you to get a new hard drive, because once you get one bad block that the disk drive internals can't hide from your sight, the chances of getting more are generally said to become much higher (precise statistics are unknown to us, and this disk drive is probably not expensive enough for you to you to risk your time and data on it. if you don't want to follow that advice then if you have just a few bad blocks, try writing to the bad blocks and see if the drive remaps the bad blocks (that means it takes a block it has in reserve and allocates it for use for of that block number. If it cannot remap the block, use badblock option (-B) with reiserfs utils to handle this block correctly.

    bread: cannot read the block 4738385: (Input/Output) error."


    Kindly help on it

  6. #6

    Re: Failure to mount a HDD partition

    Quote Originally Posted by prabhuvspj View Post
    Willem,

    Thanks for your message.

    During rescure operation using reiserfsck, i have the following message.

    "The Problem has occured looks like a hardward problem. If you have bad blocks, we advice you to get a new hard drive, because once you get one bad block that the disk drive internals can't hide from your sight, the chances of getting more are generally said to become much higher (precise statistics are unknown to us, and this disk drive is probably not expensive enough for you to you to risk your time and data on it. if you don't want to follow that advice then if you have just a few bad blocks, try writing to the bad blocks and see if the drive remaps the bad blocks (that means it takes a block it has in reserve and allocates it for use for of that block number. If it cannot remap the block, use badblock option (-B) with reiserfs utils to handle this block correctly.

    bread: cannot read the block 4738385: (Input/Output) error."


    Kindly help on it
    I think the -B option is your only option here.... again, if there is important data on this partition, you might first want to make a partition image before continuing.

    What kind of disk is this that's holding the sda2 partition? Is it a single drive? Or is there a hardware/software raid configured over multiple disks?

    -Willem
    Last edited by Magic31; 31-May-2013 at 12:44.
    Knowledge Partner (voluntary sysop)
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  7. #7

    Re: Failure to mount a HDD partition

    Quote Originally Posted by Magic31 View Post
    I think the -B option is your only option here.... again, if there is important data on this partition, you might first want to make a partition image before continuing.

    What kind of disk is this that's holding the sda2 partition? Is it a single drive? Or is there a hardware/software raid configured over multiple disks?

    -Willem
    These links might also be of help :

    http://www.titov.net/2005/12/31/how-...-crashed-disk/
    http://www.krazyworks.com/dealing-wi...fs-bad-blocks/

    -Willem
    Knowledge Partner (voluntary sysop)
    ---
    If you find a post helpful and are logged into the web interface,
    please show your appreciation and click on the star below it. Thanks!

  8. Re: Failure to mount a HDD partition

    while attempt to recovering reiserfs file system. following error followed.(ps: we tried rebulid tree before your suggestion. but that not completed.do you think that affected now?) Reiserfck --fix-fixable replaying journal: done reiserfs'/dev/sda2' in block [18..8211]:0 transactions replayed checking internal tree.. bad root block 0. (--rebuild-tree did not complete) Aborted.

    Kindly do the needful

  9. #9

    Re: Failure to mount a HDD partition

    Quote Originally Posted by prabhuvspj View Post
    while attempt to recovering reiserfs file system. following error followed.(ps: we tried rebulid tree before your suggestion. but that not completed.do you think that affected now?) Reiserfck --fix-fixable replaying journal: done reiserfs'/dev/sda2' in block [18..8211]:0 transactions replayed checking internal tree.. bad root block 0. (--rebuild-tree did not complete) Aborted.

    Kindly do the needful
    Do you have data on the sda2 partition? Or just the OS related bits?

    If the reiserfsck can't get through due to bad blocks.... The only option I see is reinstalling the OS and retrieving what's needed from a backup. The times I've had to deal with fixing a corrupt filesystem on ReiserFS, outcome was usually to format and reinstall.
    If reinstalling, using ext3 is still what I'd recommend with SLES 10. If you have the option, SLES 11 would be better as SLES 10 is almost EOL in terms of general support.

    -Willem
    Knowledge Partner (voluntary sysop)
    ---
    If you find a post helpful and are logged into the web interface,
    please show your appreciation and click on the star below it. Thanks!

  10. Re: Failure to mount a HDD partition

    Willem,

    Thank you for your timely support.

    I would like to provide some details for you to decide on this issue.

    My sda2 is only data partition is not an OS data drive (my actual OS data drive is sda3 which file system is clean).

    (I have received the bad root block 0 error message during the reiserfsck fix-fixable badblocks badblocksfile <device> option only, I can successfully complete the previous step i.e to complete badblocks n b 4096 -0 badblocksfile <device>)

    Since I have sufficient back up of my critical files, data recovery is not prime aim.

    My current OS is SLED (not SLES) 10 with SP2.

    As you have recommended for ext3 up gradation from ReiserFS, is it possible to do it only for sda2 as the other hard drives FS (Sda1 & Sda3) are currently ok.

    Kindly give me suggestion on this situation.

    With great regards

    Prabhu V.

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