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  1. #1
    Join Date
    Nov 2007
    Location
    India
    Posts
    843

    Exclamation HDD read and write error

    today in one of the hdd we had error that it cant able to read and write the data

    error log

    Mar 4 20:32:03 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:03 server1 kernel: end_request: I/O error, dev sdc, sector 63
    Mar 4 20:32:03 server1 kernel: EXT2-fs error (device sdc1): read_block_bitmap: Cannot read block bitmap - block_group = 6281, block_bitmap = 205815808
    Mar 4 20:32:03 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:03 server1 kernel: end_request: I/O error, dev sdc, sector 16368764 15
    Mar 4 20:32:03 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:03 server1 kernel: end_request: I/O error, dev sdc, sector 16368764 15
    Mar 4 20:32:03 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:03 server1 kernel: end_request: I/O error, dev sdc, sector 18403822 79
    Mar 4 20:32:03 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:03 server1 kernel: end_request: I/O error, dev sdc, sector 18403822 79
    Mar 4 20:32:03 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:03 server1 kernel: end_request: I/O error, dev sdc, sector 28928339 67
    Mar 4 20:32:04 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000
    Mar 4 20:32:04 server1 kernel: end_request: I/O error, dev sdc, sector 19459890 47
    Mar 4 20:32:04 server1 kernel: sd 2:0:0:0: SCSI error: return code = 0x00040000


    root@server1[/home2]# ls
    /bin/ls: reading directory .: Input/output error

    any issue on this it due to bad sector? or kernel issue
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  2. #2
    Join Date
    Feb 2008
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    That definitely looks like a bad mounted disk. It's multiple sectors that are not reading at all. It's best to start pulling data from backup.

    Regards
    Joe / UNIXY
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  3. #3
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    Quote Originally Posted by UNIXy View Post
    That definitely looks like a bad mounted disk. It's multiple sectors that are not reading at all. It's best to start pulling data from backup.

    Regards
    Joe / UNIXY
    it possible to get the data from that HDD itself?
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  4. #4
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    Quote Originally Posted by yajur View Post
    it possible to get the data from that HDD itself?
    Probably but you might get some corrupted files too.

    It won't hurt to try though.

    Specially 4 U
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  5. #5
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    Quote Originally Posted by yajur View Post
    it possible to get the data from that HDD itself?
    Can you post the full but relevant dmesg lines? I just want to rule out other possible issues.

    Regards
    Joe / UNIXY
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  6. #6
    Some days before we had such a problem , the best thing to do is to stop the server and make clone of this HDD to another HDD.But there can be some corrupted files.

  7. #7
    Hardware is in the process of dying. PRobably a good idea to replace it / sync the data / restore from backups
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  8. #8
    Quote Originally Posted by yajur View Post
    it possible to get the data from that HDD itself?
    The HDD is gone. You should either replace the current drive with a new one and attach the bad drive as secondary OR get a new server and migrate the data off this server immediately.
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  9. #9
    Join Date
    Jun 2009
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    The harddisk has certainly having a problem. Try to recover the data and move it to another hard disk first.
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