githubmirror/ostree

man/ostree-pull.xml
241 строка8 KB
Joseph Marrero
ostree-repo-pull: add options to configure retry behavior
18 окт 2023, 04:00
18 окт 2023, 04:004fb6e6f
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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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<refentry id="ostree">

    <refentryinfo>
        <title>ostree pull</title>
        <productname>OSTree</productname>

        <authorgroup>
            <author>
                <contrib>Developer</contrib>
                <firstname>Colin</firstname>
                <surname>Walters</surname>
                <email>walters@verbum.org</email>
            </author>
        </authorgroup>
    </refentryinfo>

    <refmeta>
        <refentrytitle>ostree pull</refentrytitle>
        <manvolnum>1</manvolnum>
    </refmeta>

    <refnamediv>
        <refname>ostree-pull</refname>
        <refpurpose>Download data from a remote repository</refpurpose>
    </refnamediv>

    <refsynopsisdiv>
            <cmdsynopsis>
                <command>ostree pull <arg choice="req">REMOTE</arg> <arg choice="opt">BRANCH</arg></command>
            </cmdsynopsis>
    </refsynopsisdiv>

    <refsect1>
        <title>Options</title>

        <variablelist>
            <varlistentry>
                <term><option>--commit-metadata-only</option></term>

                <listitem><para>
                    Fetch only the commit metadata.
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--cache-dir</option>=DIR</term>

                <listitem><para>
                    Use an alternate cache directory in <literal>DIR</literal>.
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--disable-fsync</option></term>

                <listitem><para>
                    Do no invoke fsync().
                </para></listitem>
            </varlistentry>

            <varlistentry>
              <term><option>--localcache-repo</option></term>

              <listitem><para>
                Like git's <literal>clone --reference</literal>.  Reuse the provided
                OSTree repo as a local object cache when doing HTTP fetches.
                May be specified multiple times.
              </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--untrusted</option></term>

                <listitem><para>
                    Do not trust local sources, verify checksums and don't hardlink into source.
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--disable-static-deltas</option></term>

                <listitem><para>
                    Do not use static deltas.
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--mirror</option></term>

                <listitem><para>
                    Write refs suitable for a mirror, i.e. refs are stored in the
                    <literal>heads/</literal> directory rather than the
                    <literal>remotes/</literal> directory. This makes the target repo
                    suitable to be exported for other clients to pull from as an ostree
                    remote. If no specific refs are specified, all refs will be fetched (the
                    remote must have a summary file present).
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--subpath</option>=SUBPATH</term>

                <listitem><para>
                    Only pull the provided subpath.
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--depth</option>=DEPTH</term>

                <listitem><para>
                    Traverse DEPTH parents (-1=infinite) (default: 0).
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--network-retries</option>=N</term>

                <listitem><para>
                    Specifies how many times each download should be retried upon error (default: 5)
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--disable-retry-on-network-errors</option></term>

                <listitem><para>
                    Do not retry when network issues happen, instead fail automatically. (Currently only affects libcurl)
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--low-speed-limit-bytes</option>=N</term>

                <listitem><para>
                    The average transfer speed per second of a transfer during the
                    time set via 'low-speed-time-seconds' for libcurl to abort
                    (default: 1000)
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--low-speed-time-seconds</option>=N</term>

                <listitem><para>
                    The time in number seconds that the transfer speed should be
                    below the 'low-speed-limit-bytes' setting for libcurl to abort
                    (default: 30)
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--max-outstanding-fetcher-requests</option>=N</term>

                <listitem><para>
                    The max amount of concurrent connections allowed. (default: 8)
                </para></listitem>
            </varlistentry>

            <varlistentry>
                <term><option>--disable-verify-bindings</option></term>

                <listitem><para>
                    Disable verification of commit metadata bindings.
                </para></listitem>
            </varlistentry>
        </variablelist>
    </refsect1>

    <refsect1>
        <title>Description</title>

      <para>
	  Without --mirror, this command will create new refs
	  under <literal>remotes/REMOTE/</literal> directory
	  for each pulled branch unless they are already created. Such
	  refs can be then referenced by <literal>REMOTE:BRANCH</literal> in
	  <literal>ostree</literal> subcommands (e.g. <literal>ostree log origin:exampleos/x86_64/standard</literal>).
      </para>

        <para>
	  This command can retrieve just a specific commit, or go all
	  the way to performing a full mirror of the remote
	  repository.  If no <literal>BRANCH</literal> is specified,
	  all configured branches are retrieved.
        </para>

	<para>
    A special syntax in the <literal>@</literal> character allows
    specifying a specific commit to retrieve from a branch.  The
    use cases for this are somewhat similar to pulling a specific
    git tag; one could e.g. script a system upgrade to a known-good
    version, rather than the latest from the content provider.
	</para>

    </refsect1>

    <refsect1>
        <title>Example</title>

        <para><command>$ ostree --repo=repo pull --depth=-1 --mirror remote_name</command></para>

	<para>Perform a complete mirror of the remote.  (This is
	likely most useful if your repository is also
	<literal>archive</literal> mode)</para>

        <para><command>$ ostree --repo=repo pull remote_name exampleos/x86_64/standard</command></para>

	<para>Fetch the most recent commit to <literal>exampleos/x86_64/standard</literal>.</para>

        <para><command>$ ostree --repo=repo pull remote_name exampleos/x86_64/standard@98ea6e4f216f2fb4b69fff9b3a44842c38686ca685f3f55dc48c5d3fb1107be4</command></para>

	<para>Download the specific commit starting with
	<literal>98ea6e</literal> as if it was the latest commit for
	<literal>exampleos/x86_64/standard</literal>.</para>
    </refsect1>

</refentry>