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https://github.com/systemd/systemd
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This part of the copyright blurb stems from the GPL use recommendations: https://www.gnu.org/licenses/gpl-howto.en.html The concept appears to originate in times where version control was per file, instead of per tree, and was a way to glue the files together. Ultimately, we nowadays don't live in that world anymore, and this information is entirely useless anyway, as people are very welcome to copy these files into any projects they like, and they shouldn't have to change bits that are part of our copyright header for that. hence, let's just get rid of this old cruft, and shorten our codebase a bit.
106 lines
5.1 KiB
XML
106 lines
5.1 KiB
XML
<?xml version="1.0"?>
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<!--*-nxml-*-->
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<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.2//EN" "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd">
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<!--
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SPDX-License-Identifier: LGPL-2.1+
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Copyright 2017 Zbigniew Jędrzejewski-Szmek
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-->
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<refentry id="systemd-makefs@.service">
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<refentryinfo>
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<title>systemd-makefs@.service</title>
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<productname>systemd</productname>
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<authorgroup>
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<author>
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<contrib>Developer</contrib>
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<firstname>Zbigniew</firstname>
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<surname>Jędrzejewski-Szmek</surname>
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<email>zbyszek@in.waw.pl</email>
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</author>
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</authorgroup>
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</refentryinfo>
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<refmeta>
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<refentrytitle>systemd-makefs@.service</refentrytitle>
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<manvolnum>8</manvolnum>
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</refmeta>
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<refnamediv>
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<refname>systemd-makefs@.service</refname>
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<refname>systemd-makeswap@.service</refname>
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<refname>systemd-growfs@.service</refname>
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<refname>systemd-makefs</refname>
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<refname>systemd-growfs</refname>
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<refpurpose>Creating and growing file systems on demand</refpurpose>
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</refnamediv>
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<refsynopsisdiv>
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<para><filename>systemd-makefs@<replaceable>device</replaceable>.service</filename></para>
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<para><filename>systemd-makeswap@<replaceable>device</replaceable>.service</filename></para>
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<para><filename>systemd-growfs@<replaceable>mountpoint</replaceable>.service</filename></para>
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<para><filename>/usr/lib/systemd/systemd-makefs</filename></para>
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<para><filename>/usr/lib/systemd/systemd-growfs</filename></para>
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</refsynopsisdiv>
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<refsect1>
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<title>Description</title>
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<para><filename>systemd-makefs@.service</filename>,
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<filename>systemd-makeswap@.service</filename>, and
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<filename>systemd-growfs@.service</filename> are used to implement the
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<option>x-systemd.makefs</option> and <option>x-systemd.growfs</option> options
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in <citerefentry project='man-pages'><refentrytitle>fstab</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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see <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>.
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They are instantiated for each device for which the file system or swap structure
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needs to be initialized, and for each mount point where the file system needs to
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be grown.</para>
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<para>These services are started at boot, either right before or right after the
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mount point or swap device are used.</para>
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<para><filename>systemd-makefs</filename> knows very little about specific file
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systems and swap devices, and after checking that the block device does not already
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contain a file system or other content, it will execute binaries specific to
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each filesystem type (<filename>/sbin/mkfs.*</filename>).</para>
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<para><filename>systemd-growfs</filename> knows very little about specific file
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systems and swap devices, and will instruct the kernel to grow the mounted
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filesystem to full size of the underlying block device. Nevertheless, it needs
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to know the
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<citerefentry project='man-pages'><refentrytitle>ioctl</refentrytitle><manvolnum>2</manvolnum></citerefentry>
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number specific to each file system, so only certain types are supported.
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Currently:
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<citerefentry project='man-pages'><refentrytitle>ext4</refentrytitle><manvolnum>5</manvolnum></citerefentry>,
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btrfs (see
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<citerefentry project='man-pages'><refentrytitle>btrfs-man5</refentrytitle><manvolnum>5</manvolnum></citerefentry>),
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<!-- yes, that's what the man page is called. -->
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and dm-crypt partitions (see
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<citerefentry project='die-net'><refentrytitle>cryptsetup</refentrytitle><manvolnum>8</manvolnum></citerefentry>).
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</para>
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<para>If the creation of a file system or swap device fails, the mount point or
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swap is failed too. If the growing of a file system fails, a warning is emitted.
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</para>
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</refsect1>
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<refsect1>
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<title>See Also</title>
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<para>
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<citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry><refentrytitle>systemd-fstab-generator</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.btrfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.cramfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.ext4</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.fat</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.hfsplus</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.minix</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.ntfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>,
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<citerefentry project='man-pages'><refentrytitle>mkfs.xfs</refentrytitle><manvolnum>8</manvolnum></citerefentry>
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</para>
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</refsect1>
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</refentry>
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