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On Sat, 16 Aug 2008, Ward Poelmans wrote: |
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> On Sat, Aug 16, 2008 at 07:50, <platoali@×××××.com> wrote: |
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> |
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> > the difference between du and df is about 640 - 188 = 452 MB. |
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> > and "df" is showing that my root is full 2.4 times more than "du". |
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> > |
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> > which one is the correct one? I've another server that this |
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> > difference is about 7 GiG and on that server root is 80% full. The |
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> > type of partition is ext3. |
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> |
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> Next to the difference due journaling etc, there is one important |
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> difference between du en df: |
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> deleted files held open by a running process. du doesn't count these |
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> files, df does. |
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> You can find those files with lsof | grep "deleted". Try closing the |
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> process with deleted files and suddenly your du en df will give the |
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> same free diskspace. |
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> Ofcourse, a reboot does also the trick. |
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> |
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> Ward |
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Actually, there is one more way to hide a file from du |
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If there is a file in the /var directory *BEFORE* the /var partition is |
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mounted onto the directory, then du won't find it, but df will know |
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about the space it is using. |
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You will probably need to boot from a live CD of some sort to be able to |
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umount the partitions and check the underlying directory, but it might |
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be worth it there is still space unaccounted for after a reboot. |
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-- |
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Reverend Paul Colquhoun, ULC. http://andor.dropbear.id.au/~paulcol |
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Asking for technical help in newsgroups? Read this first: |
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http://catb.org/~esr/faqs/smart-questions.html#intro |
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