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LVM2: Update introduction and

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give more details in the test section

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@16565 af4574ff-66df-0310-9fd7-8a98e5e911e0
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Pierre Labastie 2015-10-25 11:23:37 +00:00
parent 8e236ebf1a
commit 99fcc4762c
3 changed files with 57 additions and 20 deletions
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4
general.ent
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@ -1,12 +1,12 @@
<!-- $LastChangedBy$ $Date$ -->
<!ENTITY day "24"> <!-- Always 2 digits -->
<!ENTITY day "25"> <!-- Always 2 digits -->
<!ENTITY month "10"> <!-- Always 2 digits -->
<!ENTITY year "2015">
<!ENTITY copyrightdate "2001-&year;">
<!ENTITY copyholder "The BLFS Development Team">
<!ENTITY version "&year;-&month;-&day;">
<!ENTITY releasedate "October 24th &year;">
<!ENTITY releasedate "October 25th &year;">
<!ENTITY pubdate "&year;-&month;-&day;"> <!-- metadata req. by TLDP -->
<!ENTITY blfs-version "svn"> <!-- svn|[release #] -->
<!ENTITY lfs-version "development"> <!-- x.y|development] -->

9
introduction/welcome/changelog.xml
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@ -44,6 +44,15 @@
-->
<listitem>
<para>October 25th, 2015</para>
<itemizedlist>
<listitem>
<para>[pierre] - LVM2: Update introduction and test sections.</para>
</listitem>
</itemizedlist>
</listitem>
<listitem>
<para>October 24th, 2015</para>
<itemizedlist>

64
postlfs/filesystems/lvm2.xml
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@ -8,8 +8,8 @@
<!ENTITY lvm2-download-ftp "ftp://sources.redhat.com/pub/lvm2/releases/LVM2.&lvm2-version;.tgz">
<!ENTITY lvm2-md5sum "80af5af726949bbbb2aceb15b24b7d20">
<!ENTITY lvm2-size "1.8 MB">
<!ENTITY lvm2-buildsize "31 MB (44 MB with tests)">
<!ENTITY lvm2-time "0.3 SBU (9.7 SBU with tests, see below)">
<!ENTITY lvm2-buildsize "31 MB (during tests, transcient files can grow up to around 500 MB)">
<!ENTITY lvm2-time "0.3 SBU (around 10 SBU with tests, see below)">
]>
<sect1 id="lvm2" xreflabel="LVM2-&lvm2-version;">
@ -30,10 +30,11 @@
<title>Introduction to LVM2</title>
<para>
The <application>LVM2</application> package is a package that manages
The <application>LVM2</application> package is a set of tools that manage
logical partitions. It allows spanning of file systems across multiple
physical disks and disk partitions and provides for dynamic growing or
shrinking of logical partitions.
shrinking of logical partitions, mirroring and low storage footprint
snapshots.
</para>
&lfs78_checked;
@ -76,8 +77,14 @@
<bridgehead renderas="sect4">Optional</bridgehead>
<para role="optional">
<xref linkend='mdadm'/> (for checks) and
<xref linkend='xfsprogs'/> (for checks)
<xref linkend='mdadm'/>,
<xref linkend='reiserfs'/>,
<xref linkend='valgrind'/>,
<xref linkend='which'/>,
<xref linkend='xfsprogs'/> (all five may be used, but are not required,
for tests), and
<ulink url='https://github.com/jthornber/thin-provisioning-tools'>
thin-provisioning-tools</ulink>
</para>
<para condition="html" role="usernotes">User Notes:
@ -104,6 +111,7 @@
&lt;*/M&gt; Device mapper support [CONFIG_BLK_DEV_DM]
&lt;*/M/ &gt; Crypt target support [CONFIG_DM_CRYPT]
&lt;*/M/ &gt; Snapshot target [CONFIG_DM_SNAPSHOT]
&lt;*/M/ &gt; Thin provisioning target [CONFIG_DM_THIN_PROVISIONING]
&lt;*/M/ &gt; Mirror target [CONFIG_DM_MIRROR]</literal></screen>
<indexterm zone="lvm2 lvm2-kernel">
@ -130,18 +138,31 @@
make</userinput></screen>
<para>
To test the results, issue: <command>make -k
check</command> as the <systemitem class="username">root</systemitem>
user. At least one partition on a hard drive must be set up as a Linux
LVM partition (type 8e00). The test timings are very dependent on the
speed of the disk(s), and on the number of enabled kernel options. A
number of tests may fail. Tests have been reported to hang when run in
a virtual machine under <application>QEMU</application>.
<!-- My results: 460 tests: 121 passed, 307 skipped, 21 broken, 11 failed
version LVM2-2.02.132. Not all kernel settings enabled, but those
above all were set. Previous reported test results for LVM2-2.02.125
by Bruce were better (448 tests: 141 passed, 302 skipped, 5 broken,
0 failed). - Pierre -->
The tests use <application>udev</application> for logical volume
synchronization, so that the LVM udev rules and some utilities need to
be installed before running the tests. If you are installing
<application>LVM2</application> for the first time, and do not
want to install the full package before running the tests, the minimal
set of utilities can be installed by running the following instructions
as the <systemitem class="username">root</systemitem> user:
</para>
<screen role="root"><userinput>make -C tools install_dmsetup_dynamic &amp;&amp;
make -C udev install &amp;&amp;
make -C libdm install</userinput></screen>
<para>
To test the results, issue: <command>make check_local</command> as the
<systemitem class="username">root</systemitem> user. Other targets are
available and can be listed with <command>make -C test help</command>.
The test timings are very dependent on the speed of the disk(s), and on
the number of enabled kernel options. A number of tests may fail. Two
tests have been reported to hang, and can be disabled via <command>rm
test/shell/lvcreate-large-raid.sh</command> and <command>rm
test/shell/snapshot-remove-dmsetup.sh</command>. The tests generate a lot
of kernel messages, which may clutter your terminal. You can disable them
by issuing <command>dmesg -D</command> before running the tests (do not
forget to issue <command>dmesg -E</command> when tests are done).
</para>
<para>
@ -182,6 +203,13 @@ make</userinput></screen>
event daemon.
</para>
<para>
<option>--enable-lvmetad</option>: This switch enables
building of the <application>LVM</application> metadata daemon,
which avoids scanning all the filesystems when an lvm command is
run.
</para>
</sect2>
<sect2 role="content">