205 lines
3.6 KiB
HTML
205 lines
3.6 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML
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>Directory organization in the real base directory</TITLE
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NAME="dirorg"
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>9. Directory organization in the real base directory</H1
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><P
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>Why should there be any special organization in the <EM
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>real base directory</EM
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>? If we just create all <EM
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>real directories</EM
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> in one <EM
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>real base directory</EM
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> there could be a performance penalty when there are a large number of <EM
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>real directories</EM
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> to be created. File systems like ext2/ext3 are not optimized for this kind of flat directory structure.</P
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><P
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>It would be much better if the <EM
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>real base directory</EM
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> is divided into more subdirectories, or even to divide these subdirectories again into more subdirectories. And in the final subdirectories actual home directories are kept.</P
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><P
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>There are three types of directory organization:</P
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><P
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></P
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><DIV
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CLASS="variablelist"
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><DL
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><DT
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><EM
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>level 0</EM
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></DT
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><DD
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><P
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>Actually no organization. All home directories are created directly under <EM
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>real base directory</EM
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>.</P
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></DD
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><DT
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><EM
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>level 1</EM
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></DT
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><DD
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><P
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>The <EM
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>Real base directory</EM
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> is divided into more subdirectories. The subdirectory names are derived from the first character of the final directory to be created. For example, if the <TT
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CLASS="filename"
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>user1</TT
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> directory is to be created, first a directory named 'u' is created under <EM
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>real base directory</EM
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>. Then in that subdirectory the actual directory <TT
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CLASS="filename"
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>user1</TT
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> is created as <TT
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CLASS="filename"
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>/<real_base_directory>/u/user1</TT
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>.</P
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></DD
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><DT
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><EM
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>level 2</EM
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></DT
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><DD
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><P
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>Same as level 1 organization but after the first level of subdirectories, a second level of subdirectories is created. The names here are the first two characters of the final directory to be created. For example, for user <TT
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CLASS="literal"
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>user1</TT
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>, as in the above example, the <TT
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CLASS="filename"
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>/<real_base_directory>/u/us/user1</TT
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> directory is created.</P
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></DD
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>Prev</A
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>Some definitions</TD
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><TD
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> </TD
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>Virtual directory expiration</TD
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> |