Changeset 09765cf

Timestamp:

10/27/2015 09:31:05 PM (9 years ago)

Author:

Pierre Labastie <pieere@…>

Branches:

10.0, 10.1, 11.0, 11.1, 11.2, 11.3, 12.0, 12.1, 12.2, 7.10, 7.9, 8.0, 8.1, 8.2, 8.3, 8.4, 9.0, 9.1, basic, bdubbs/svn, elogind, gimp3, kea, ken/TL2024, ken/inkscape-core-mods, ken/tuningfonts, lazarus, lxqt, nosym, perl-modules, plabs/newcss, plabs/python-mods, python3.11, qt5new, rahul/power-profiles-daemon, renodr/vulkan-addition, trunk, upgradedb, xry111/for-12.3, xry111/intltool, xry111/llvm18, xry111/soup3, xry111/spidermonkey128, xry111/test-20220226, xry111/xf86-video-removal

Children:

f9431b6

Parents:

842f78d

Message:

LVM and mdadm: Add a warning against kernel versions 4.1 and 4.2, which have
a broken RAID implementation

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@16572 af4574ff-66df-0310-9fd7-8a98e5e911e0

Files:

• introduction/welcome/changelog.xml (modified) (1 diff)
• postlfs/filesystems/lvm2.xml (modified) (5 diffs)
• postlfs/filesystems/mdadm.xml (modified) (1 diff)

introduction/welcome/changelog.xml

@@ -48 +48 @@
       <itemizedlist>
         <listitem>
+          <para>[pierre] - Add a note in the LVM and mdadm pages,
+          warning against versions 4.1 and 4.2 of the kernel, which have
+          a broken RAID implementation.</para>
+        </listitem>
+        <listitem>
           <para>[fernando] - Update to mesa-11.0.4. Fixes
           <ulink url="&blfs-ticket-root;7051">#7051</ulink>.</para>

postlfs/filesystems/lvm2.xml

@@ -91 +91 @@
       <ulink url="&blfs-wiki;/lvm2"/>
     </para>
+
+    <note>
+      <para>
+        Kernel versions in the 4.1 and 4.2 series have a broken RAID
+        implementation. If you want to use RAID type LV's, you should
+        install a kernel with version above 4.2.4. Note that several
+        tests use RAID logical volumes, and can generate a <quote>kernel
+        oops</quote> with faulty kernel version, which ususally renders the
+        system unusable.
+      </para>
+    </note>
   </sect2>
 
@@ -131 +142 @@
 <screen><userinput>./configure --prefix=/usr       \
             --exec-prefix=      \
-            --with-confdir=/etc \
             --enable-applib     \
             --enable-cmdlib     \
@@ -157 +167 @@
       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
+      the number of enabled kernel options. A number of tests may fail.
+      One test has been reported to hang, and can be disabled via <command>rm
+      test/shell/snapshot-remove-dmsetup.sh</command>. Other tests may hang
+      with kernel versions in the 4.1 and 4.2 series (see above). They can be
+      removed as well if necessary. 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
@@ -224 +235 @@
         <seg>
           blkdeactivate, dmeventd (optional), dmsetup, fsadm, lvm, lvmconf,
-          lvmdump, and vgimportclone. There are also numerous symbolic links to
-          lvm that implement specific functionalities
+          lvmdump, lvmetad (optional), and vgimportclone. There are also
+          numerous symbolic links to lvm that implement specific
+          functionalities
         </seg>
         <seg>
@@ -335 +347 @@
       </varlistentry>
 
+      <varlistentry id="lvmetad">
+        <term><command>lvmetad</command></term>
+        <listitem>
+          <para>
+            (optional) is the LVM metadata daemon.
+          </para>
+          <indexterm zone="lvm2 lvmetad">
+            <primary sortas="b-lvmetad">lvmetad</primary>
+          </indexterm>
+        </listitem>
+      </varlistentry>
+
       <varlistentry id="vgimportclone">
         <term><command>vgimportclone</command></term>

postlfs/filesystems/mdadm.xml

@@ -59 +59 @@
     <para condition="html" role="usernotes">User Notes:
     <ulink url="&blfs-wiki;/mdadm"/></para>
+    <note>
+      <para>
+        Kernel versions in series 4.1 and 4.2 have a broken RAID
+        implementation. Use a kernel with version above 4.2.4.
+      </para>
+    </note>
 
   </sect2>