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Adding initial Japanese live-boot manpage translation from victory <v…
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.\"******************************************************************* | ||
.\" | ||
.\" This file was generated with po4a. Translate the source file. | ||
.\" | ||
.\"******************************************************************* | ||
.TH LIVE\-BOOT conf 2013\-10\-30 4.0~alpha17\-1 "Live システムプロジェクト" | ||
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.SH 名前 | ||
\fBpersistence.conf\fP \- Configuration file for persistence media in live\-boot | ||
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.SH 説明 | ||
If live\-boot probes a persistence volume with the label (or GPT name, or | ||
file name, but from now on we will just say "label") "persistence", that | ||
volume's persistence is fully customizable through the \fBpersistence.conf\fP | ||
file stored on the root of its file system. Any such labeled volume must | ||
have such a file, or it will be ignored. | ||
.PP | ||
The format of \fBpersistence.conf\fP allows empty lines and lines starting with | ||
a "#" (used for comments), both which will be ignored. A so called "custom | ||
mount" has the format: | ||
.PP | ||
.RS | ||
\fIDIR\fP [\fIOPTION\fP]... | ||
.RE | ||
.PP | ||
which roughly translates to "make \fIDIR\fP persistence in the way described by | ||
the list of \fIOPTION\fPs". | ||
.PP | ||
For each custom mount \fIDIR\fP must be an absolute path that cannot contain | ||
white spaces or the special . and .. path components, and cannot be /live | ||
(or any of its sub\-directories). Once activated all changes (file deletion, | ||
creation and modification) to \fIDIR\fP on the live file system are stored | ||
persistently into a path equivalent to \fIDIR\fP on the persistence media, | ||
called the source directory. The default way to achieve persistence is to | ||
simply bind\-mount the corresponding source directory to \fIDIR\fP, but this can | ||
be changed through the use of \fIOPTION\fPs. | ||
.PP | ||
All custom mounts will be done in an order so that no two custom mounts can | ||
"hide" each other. For instance, if we have the two \fIDIR\fP:s /a and /a/b it | ||
would always be the case that /a is mounted first, then /a/b. This remains | ||
true no matter how the lines in \fBpersistence.conf\fP are ordered, or if | ||
several \fBpersistence.conf\fP files on different persistence media are used at | ||
the same time. However, it is forbidden for custom mounts to have their | ||
source directory inside the source directory of another custom mount, so the | ||
source directories that are auto\-created by live\-boot does not support | ||
"nested" mounts like /a and /a/b on the same media. In this case you must | ||
use the \fBsource\fP option (see below) to make sure that they are stored in | ||
different source directories. | ||
.PP | ||
When a source directory doesn't exist on the persistence media for a certain | ||
custom mount, it will be created automatically, and permissions and | ||
ownership will be optimistically set according to \fIDIR\fP. It will also be | ||
bootstrapped by copying the contents of the \fIDIR\fP into its source directory | ||
on the persistence media. The bootstrapping will not happen when the \fBlink\fP | ||
or \fBunion\fP options are used (see below). | ||
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.SH オプション | ||
Custom mounts defined in \fBpersistence.conf\fP accept the following options in | ||
a coma\-separated list: | ||
.IP \fBsource\fP=\fIPATH\fP 4 | ||
When given, store the persistence changes into \fIPATH\fP on the persistence | ||
media. \fIPATH\fP must be a relative path (with respect to the persistence | ||
media root) that cannot contain white spaces or the special . or .. path | ||
components, with the exception that it can be just . which means the | ||
persistence media root. This option is mostly relevant if you want to nest | ||
custom mounts, which otherwise would cause errors, or if you want to make | ||
the whole media root available (similar to the now deprecated \fBhome\-rw\fP | ||
type of persistence). | ||
.PP | ||
The following options are mutually exclusive (only the last given one will | ||
be in effect): | ||
.IP \fBbind\fP 4 | ||
Bind\-mount the source directory to \fIDIR\fP. This is the default. | ||
.IP \fBlink\fP 4 | ||
Create the directory structure of the source directory on the persistence | ||
media in \fIDIR\fP and create symbolic links from the corresponding place in | ||
\fIDIR\fP to each file in the source directory. Existing files or directories | ||
with the same name as any link will be overwritten. Note that deleting the | ||
links in \fIDIR\fP will only remove the link, not the corresponding file in the | ||
source; removed links will reappear after a reboot. To permanently add or | ||
delete a file one must do so directly in the source directory. | ||
.IP | ||
Effectively \fBlink\fP will make only files already in the source directory | ||
persistent, not any other files in \fIDIR\fP. These files must be manually | ||
added to the source directory to make use of this option, and they will | ||
appear in \fIDIR\fP in addition to files already there. This option is useful | ||
when only certain files need to be persistent, not the whole directory | ||
they're in, e.g. some configuration files in a user's home directory. | ||
.IP \fBunion\fP 4 | ||
Save the rw branch of a union on the persistence media, so only the changes | ||
are stored persistently. This can potentially reduce disk usage compared to | ||
bind\-mounts, and will not hide files added to the read\-only media. One | ||
caveat is that the union will use \fIDIR\fP from the image's read\-only file | ||
system, not the real file system root, so files created after boot (e.g. by | ||
live\-config) will not appear in the union. This option will use the union | ||
file system specified by live\-boot's \fBunion\fP boot parameter, but is not | ||
supported with \fBunion=unionmount\fP. | ||
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.SH DIRECTORIES | ||
.IP \fB/live/persistence\fP 4 | ||
All persistence volumes will be mounted here (in a directory corresponding | ||
to the device name). The \fBpersistence.conf\fP file can easily be edited | ||
through this mount, as well as any source directories (which is especially | ||
practical for custom mounts using the \fBlink\fP option). | ||
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.SH EXAMPLES | ||
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Let's say we have a persistence volume \fIVOL\fP with the a \fBpersistence.conf\fP | ||
file containing the following four lines (numbered for ease of reference): | ||
.TP 7 | ||
1. | ||
/home/user1 link,source=config\-files/user1 | ||
.TP | ||
2. | ||
/home/user2 link,source=config\-files/user2 | ||
.TP | ||
3. | ||
/home | ||
.TP | ||
4. | ||
/usr union | ||
.PP | ||
The corresponding source directories are: | ||
.TP 7 | ||
1. | ||
\fIVOL\fP/config\-files/user1 (but it would be \fIVOL\fP/home/user1 without the | ||
\fBsource\fP option) | ||
.TP | ||
2. | ||
\fIVOL\fP/config\-files/user2 (but it would be \fIVOL\fP/home/user2 without the | ||
\fBsource\fP option) | ||
.TP | ||
3. | ||
\fIVOL\fP/home | ||
.TP | ||
4. | ||
\fIVOL\fP/usr | ||
.PP | ||
It was necessary to set the \fBsource\fP options for 1 and 2, since they | ||
otherwise would become nested with 3's source, which is invalid. | ||
.PP | ||
Line 3 will be taken care of before line 1 and 2 in order to prevent custom | ||
mounts 1 and 2 from being hidden by 3. When line 3 is handled, \fIVOL\fP/home | ||
is simply bind\-mounted on /home. To illustrate what happens for lines 1 and | ||
2, let's say that the following files exist: | ||
.TP 7 | ||
a. | ||
\fIVOL\fP/config\-files/user1/.emacs | ||
.TP | ||
b. | ||
\fIVOL\fP/config\-files/user2/.bashrc | ||
.TP | ||
c. | ||
\fIVOL\fP/config\-files/user2/.ssh/config | ||
.PP | ||
Then the following links and directories will be created: | ||
.TP 7 | ||
Link: | ||
/home/user1/.emacs \-> \fIVOL\fP/config\-files/user1/.emacs (from a) | ||
.TP | ||
Link: | ||
/home/user2/.bashrc \-> \fIVOL\fP/config\-files/user2/.bashrc (from b) | ||
.TP | ||
Dir: | ||
/homea/user2/.ssh (from c) | ||
.TP | ||
Link: | ||
/home/user2/.ssh/config \-> \fIVOL\fP/config\-files/user2/.ssh/config (from | ||
c) | ||
.PP | ||
One could argue, though, that lines 1 and 2 in the example | ||
\fBpersistence.conf\fP file above are unnecessary since line 3 already would | ||
make all of /home persistent. The \fBlink\fP option is intended for situations | ||
where you don't want a complete directory to be persistent, only certain | ||
files in it or its sub\-directories. | ||
.PP | ||
Line 4 can be mounted at any time since its \fIDIR\fP (and source directory) is | ||
completely disjoint from all the other custom mounts. When mounted, | ||
\fIVOL\fP/usr will be the rw branch due to the \fBunion\fP option, and will only | ||
contain the difference compared to the underlying read\-only file | ||
system. Hence packages could be installed into /usr with great space\-wise | ||
efficiency compared to bind\-mounts, since in the latter case all of /usr | ||
would have to be copied into \fIVOL\fP/usr during the initial bootstrap. | ||
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.SH 関連項目 | ||
\fIlive\-boot\fP(7) | ||
.PP | ||
\fIlive\-build\fP(7) | ||
.PP | ||
\fIlive\-config\fP(7) | ||
.PP | ||
\fIlive\-tools\fP(7) | ||
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.SH ホームページ | ||
live\-boot 及び Live | ||
システムプロジェクトについてのさらなる情報は、<\fIhttp://live\-systems.org/\fP> のホームページや | ||
<\fIhttp://live\-systems.org/manual/\fP> のマニュアルにあります。 | ||
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.SH バグ | ||
バグは <\fIhttp://bugs.debian.org/\fP> にあるバグ追跡システムに live\-boot | ||
パッケージのバグ報告として提出するか、<\fIdebian\-live@lists.debian.org\fP> にある Live | ||
システムのメーリングリスト宛てにメールを書くことにより報告できます。 | ||
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.SH 作者 | ||
live\-boot は Daniel Baumann さん <\fImail@daniel\-baumann.ch\fP> により書かれました。 |
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