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1 | <?xml version='1.0' encoding='UTF-8'?> |
| 2 | <!DOCTYPE sections SYSTEM "/dtd/book.dtd"> |
2 | <!DOCTYPE sections SYSTEM "/dtd/book.dtd"> |
| 3 | |
3 | |
| 4 | <!-- The content of this document is licensed under the CC-BY-SA license --> |
4 | <!-- The content of this document is licensed under the CC-BY-SA license --> |
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| 6 | |
6 | |
| 7 | <!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-config.xml,v 1.34 2004/06/03 20:58:34 neysx Exp $ --> |
7 | <!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-config.xml,v 1.35 2004/07/03 10:05:28 swift Exp $ --> |
| 8 | |
8 | |
| 9 | <sections> |
9 | <sections> |
| 10 | <section> |
10 | <section> |
| 11 | <title>Filesystem Information</title> |
11 | <title>Filesystem Information</title> |
| 12 | <subsection> |
12 | <subsection> |
| 13 | <title>What is fstab?</title> |
13 | <title>What is fstab?</title> |
| 14 | <body> |
14 | <body> |
| 15 | |
15 | |
| 16 | <p> |
16 | <p> |
| 17 | Under Linux, all partitions used by the system must be listed in |
17 | Under Linux, all partitions used by the system must be listed in |
| 18 | <path>/etc/fstab</path>. This file contains the mountpoints of those partitions |
18 | <path>/etc/fstab</path>. This file contains the mountpoints of those partitions |
| 19 | (where they are seen in the file system structure), how they should be mounted |
19 | (where they are seen in the file system structure), how they should be mounted |
| 20 | (special options) and when (automatically or not, can users mount those or not, |
20 | (special options) and when (automatically or not, can users mount those or not, |
| 21 | etc.). |
21 | etc.). |
| 22 | </p> |
22 | </p> |
| … | |
… | |
| 68 | <path>/etc/fstab</path>: |
68 | <path>/etc/fstab</path>: |
| 69 | </p> |
69 | </p> |
| 70 | |
70 | |
| 71 | <pre caption="Opening /etc/fstab"> |
71 | <pre caption="Opening /etc/fstab"> |
| 72 | # <i>nano -w /etc/fstab</i> |
72 | # <i>nano -w /etc/fstab</i> |
| 73 | </pre> |
73 | </pre> |
| 74 | |
74 | |
| 75 | <p> |
75 | <p> |
| 76 | Let us take a look at how we write down the options for the <path>/boot</path> |
76 | Let us take a look at how we write down the options for the <path>/boot</path> |
| 77 | partition. This is just an example, so if your architecture doesn't require a |
77 | partition. This is just an example, so if your architecture doesn't require a |
| 78 | <path>/boot</path> partition (such as <b>PPC</b>), don't copy it verbatim. |
78 | <path>/boot</path> partition (such as <b>PPC</b>), don't copy it verbatim. |
| 79 | </p> |
79 | </p> |
| 80 | |
80 | |
| 81 | <p> |
81 | <p> |
| 82 | In our default x86 partitioning example <path>/boot</path> is the |
82 | In our default x86 partitioning example <path>/boot</path> is the |
| 83 | <path>/dev/hda1</path> partition, with <c>ext2</c> as filesystem. It shouldn't |
83 | <path>/dev/hda1</path> partition, with <c>ext2</c> as filesystem. |
| 84 | be mounted automatically (<c>noauto</c>) but does need to be checked. So we |
84 | It needs to be checked during boot, so we would write down: |
| 85 | would write down: |
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|
| 86 | </p> |
85 | </p> |
| 87 | |
86 | |
| 88 | <pre caption="An example /boot line for /etc/fstab"> |
87 | <pre caption="An example /boot line for /etc/fstab"> |
| 89 | /dev/hda1 /boot ext2 noauto 1 2 |
88 | /dev/hda1 /boot ext2 defaults 1 2 |
|
|
89 | </pre> |
|
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90 | |
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91 | <p> |
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|
92 | Some users don't want their <path>/boot</path> partition to be mounted |
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|
93 | automatically. Those people should substitute <c>defaults</c> with |
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94 | <c>noauto</c>. This does mean that you need to manually mount this partition |
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95 | every time you want to use it. |
| 90 | </pre> |
96 | </p> |
| 91 | |
97 | |
| 92 | <p> |
98 | <p> |
| 93 | Now, to improve performance, most users would want to add the <c>noatime</c> |
99 | Now, to improve performance, most users would want to add the <c>noatime</c> |
| 94 | option as mountoption, which results in a faster system since access times |
100 | option as mountoption, which results in a faster system since access times |
| 95 | aren't registered (you don't need those generally anyway): |
101 | aren't registered (you don't need those generally anyway): |
| 96 | </p> |
102 | </p> |
| 97 | |
103 | |
| 98 | <pre caption="An improved /boot line for /etc/fstab"> |
104 | <pre caption="An improved /boot line for /etc/fstab"> |
| 99 | /dev/hda1 /boot ext2 noauto,noatime 1 2 |
105 | /dev/hda1 /boot ext2 noauto,noatime 1 2 |
| 100 | </pre> |
106 | </pre> |
| 101 | |
107 | |
| 102 | <p> |
108 | <p> |
| 103 | If we continue with this, we would end up with the following three lines (for |
109 | If we continue with this, we would end up with the following three lines (for |
| 104 | <path>/boot</path>, <path>/</path> and the swap partition): |
110 | <path>/boot</path>, <path>/</path> and the swap partition): |
| 105 | </p> |
111 | </p> |
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