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    Marc Mutz writes:
    > kernel 2.2.17, '/' being a 1k blocksize ext2fs:
    >
    > root@adam:/ > dd if=/dev/zero of=holed.file bs=1000 seek=5000 count=1000
    > 1000+0 records in
    > 1000+0 records out
    > root@adam:/ > ls -l holed.file
    > -rw-r--r-- 1 root root 6000000 Nov 29 23:33 holed.file
    > root@adam:/ > du -sh holed.file
    > 5.7M holed.file

    Strangely, I have 2.2.17 (TurboLinux patched), on a 1k filesystem and
    I have no problems. I have 1k, 2k, and 4k ext2 fs, all OK.

    What people who have the problem should be doing is:
    > ls -li holed.file # find inode number
    10732 -rw-r--r-- 1 root root 6000000 Nov 29 16:17 holed.file
    > du -sk holed.file # see what "stat" thinks
    983k holed.file
    > debugfs /dev/XXX
    debugfs> stats # find out ext2 block size
    ...
    Block size = 1024, fragment size = 1024
    ...
    debugfs> stat <10732> # (with < and >)
    Inode: 10732 Type: regular Mode: 0644 Flags: 0x0 Generation:
    4048594821
    User: 0 Group: 0 Size: 6000000
    File ACL: 0 Directory ACL: 0
    Links: 1 Blockcount: 1966
    ^^^^ these are 512-byte blocks, so / 2 for ~kB
    they include indirect blocks and such
    Fragment: Address: 0 Number: 0 Size: 0
    ctime: 0x3a258e82 -- Wed Nov 29 16:17:22 2000
    atime: 0x3a258e82 -- Wed Nov 29 16:17:22 2000
    mtime: 0x3a258e82 -- Wed Nov 29 16:17:22 2000
    BLOCKS:
    47512 47513 47514 47515 47516 47517 47518 47519 47520 ... 48723 48724
    TOTAL: 983
    ^^^ these are ext2fs sized blocks, not necessarily kB

    If what debugfs says doesn't match du, then it is du/libc/stat that is
    broken. If debugfs says the file actually has 6000000 bytes of data,
    then it is the filesystem that is broken.

    Cheers, Andreas
    --
    Andreas Dilger \ "If a man ate a pound of pasta and a pound of antipasto,
    \ would they cancel out, leaving him still hungry?"
    http://www-mddsp.enel.ucalgary.ca/People/adilger/ -- Dogbert
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