I cannot mount a RAID 10 partition

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A week ago one of my 4 RAID10 disks died. I changed it and the RAID 10 seems to work (from an hardware point of view). But although I can see dirs and files using testdisk on Debian, I cannot mount it. I get the following message:



mount: wrong fs type, bad option, bad superblock on /dev/sda1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so



dmesg|tail says:



[ 11.688492] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
[ 383.777336] EXT4-fs (sda): VFS: Can't find ext4 filesystem
[ 395.620576] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
[ 1984.339058] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)



What is going wrong? What should I do?



François-Xavier






debian raid






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    down vote

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    A week ago one of my 4 RAID10 disks died. I changed it and the RAID 10 seems to work (from an hardware point of view). But although I can see dirs and files using testdisk on Debian, I cannot mount it. I get the following message:



    mount: wrong fs type, bad option, bad superblock on /dev/sda1,
    missing codepage or helper program, or other error
    In some cases useful info is found in syslog - try
    dmesg | tail or so



    dmesg|tail says:



    [ 11.688492] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
    [ 383.777336] EXT4-fs (sda): VFS: Can't find ext4 filesystem
    [ 395.620576] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
    [ 1984.339058] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)



    What is going wrong? What should I do?



    François-Xavier






    debian raid






    share









    New contributor




    fxtv is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.





















      up vote
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      down vote

      favorite









      up vote
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      down vote

      favorite











      A week ago one of my 4 RAID10 disks died. I changed it and the RAID 10 seems to work (from an hardware point of view). But although I can see dirs and files using testdisk on Debian, I cannot mount it. I get the following message:



      mount: wrong fs type, bad option, bad superblock on /dev/sda1,
      missing codepage or helper program, or other error
      In some cases useful info is found in syslog - try
      dmesg | tail or so



      dmesg|tail says:



      [ 11.688492] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
      [ 383.777336] EXT4-fs (sda): VFS: Can't find ext4 filesystem
      [ 395.620576] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
      [ 1984.339058] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)



      What is going wrong? What should I do?



      François-Xavier






      debian raid






      share









      New contributor




      fxtv is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      A week ago one of my 4 RAID10 disks died. I changed it and the RAID 10 seems to work (from an hardware point of view). But although I can see dirs and files using testdisk on Debian, I cannot mount it. I get the following message:



      mount: wrong fs type, bad option, bad superblock on /dev/sda1,
      missing codepage or helper program, or other error
      In some cases useful info is found in syslog - try
      dmesg | tail or so



      dmesg|tail says:



      [ 11.688492] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
      [ 383.777336] EXT4-fs (sda): VFS: Can't find ext4 filesystem
      [ 395.620576] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)
      [ 1984.339058] EXT4-fs (sda1): bad geometry: block count 1953480192 exceeds size of device (536870911 blocks)



      What is going wrong? What should I do?



      François-Xavier






      debian raid




      debian raid





      share









      New contributor




      fxtv is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.










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      asked 8 mins ago









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