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Hi all ! I am facing a strange disk space problem : On first host i have 200GB of datas that i want to copy to a second host on ...
  1. #1
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    [SOLVED] disk space trouble



    Hi all !

    I am facing a strange disk space problem :

    On first host i have 200GB of datas that i want to copy to a second host on an empty and freshly formated 500GB hard drive.
    But during the copy process i have a "No space left on device" error. I've checked and it's right : my 500GB hard drive is 100% full....i can't understand why my 500GB is full before having copied all the 200GB of datas !??

    Here is my technical architecture :
    Source drive is a standard Ext3 File System
    Target drive is a XFS File System
    Target drive uses LVM :
    sdb1 -> XFS File system -> size 200GB
    sdc1 -> XFS File system -> size 200GB
    sdd1 -> XFS File system -> size 100GB
    On the target host i have created a Volume Group for sdb1, sdc1 and sdd1 and then i have created a Logical Volume.
    I can see with "df" command that my logical volume has 500GB capacity.

    Both source and target drives have 4K block size.

    Note : source host is a hardware Linux box, target host is a virtual host hosted by VMWare on ESX v3.5

    Any Guru help will be apreciate !

    Regards

  2. #2
    Linux Guru reed9's Avatar
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    Please post the output of
    Code:
    su -c 'fdisk -l'
    df -h

  3. #3
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    Result of "fdisk -l" on target host :

    Code:
    Disk /dev/sda: 10.7 GB, 10737418240 bytes
    255 heads, 63 sectors/track, 1305 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x0006d926
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sda1               1          62      497983+  82  Linux swap / Solaris
    /dev/sda2              63        1305     9984397+  83  Linux
    
    Disk /dev/sdb: 214.7 GB, 214748364800 bytes
    255 heads, 63 sectors/track, 26108 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x0006030b
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdb1               1       26108   209712478+  83  Linux
    
    Disk /dev/sdc: 214.7 GB, 214748364800 bytes
    255 heads, 63 sectors/track, 26108 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x0001ceb3
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdc1               1       26108   209712478+  83  Linux
    
    Disk /dev/sdd: 107.3 GB, 107374182400 bytes
    255 heads, 63 sectors/track, 13054 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x000dfc3e
    
       Device Boot      Start         End      Blocks   Id  System
    /dev/sdd1               1       13054   104856223+  83  Linux
    
    Disk /dev/dm-0: 536.7 GB, 536766054400 bytes
    255 heads, 63 sectors/track, 65258 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes
    Disk identifier: 0x00000000
    
    Disk /dev/dm-0 doesn't contain a valid partition table
    Result of "df -h" on target host :

    Code:
    Filesystem            Size  Used Avail Use% Mounted on
    /dev/sda2             9.4G  1.6G  7.4G  18% /
    tmpfs                 1.9G     0  1.9G   0% /lib/init/rw
    udev                   10M  624K  9.4M   7% /dev
    tmpfs                 1.9G     0  1.9G   0% /dev/shm
    /dev/mapper/vg00-lvol1
                          500G  4.2M  500G   1% /home

  4. #4
    Linux Guru reed9's Avatar
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    I've checked and it's right : my 500GB hard drive is 100% full
    How did you check? According to df, only 4.2MB are used out of 500GB.

  5. #5
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    I've checked with the same df command.
    The drive is empty just because i deleted all datas on the target to do unitary copy for testing !

  6. #6
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    Why thinking difficult when we can think easy..?
    I was looking for a block size problem, logical extends problems, but it was more simple and it was not a problem.

    I copy datas using recursive scp. I didn't see that some folders contain symbolic links that should not be there, but they are, for old and obsolete reasons.
    As scp follows symbolic links, the "content" of symbolic links was also copied...

    My datas tree is as below so i let you imagine :

    /home/user1
    file1
    file2...
    somelink -> /home/user1
    /home/user2
    file1
    file2...
    somelink -> /home/user2
    ...
    Sorry i made a mistake !

    Regards

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