[Clonezilla-live] Bug found in lvm restoration, patch for this & test new lives CD
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[Clonezilla-live] Bug found in lvm restoration, patch for this & test new lives CD
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From: Gerald H. <ghe...@as...> - 2008-02-14 10:38:30
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Hello Steven,<br>
<br>
Thanks for your very good job in Clonezilla.<br>
<br>
I find a pb in lvm restoration in some case.<br>
The problem:<br>
- Restoration process seems good, but kernel can't find his root (in
LVM).<br>
<br>
Analyse :<br>
- pvdisplay => PV is created<br>
- vgdisplay => No VG is created<br>
My source data (/home/partimage) are remote on a samba server.<br>
in ocs-functions (and ocs-onthefly) the section is <br>
<br>
<tt> # create PV first<br>
echo "Creating the PV... "<br>
while read vg dev uuid; do<br>
pvcreate -ff --yes --uuid $uuid $dev<br>
done < $PV_PARSE_CONF<br>
echo "done!"<br>
<br>
# Restore the vg conf<br>
echo "Restoring the VG config... "<br>
while read vg dev uuid; do<br>
vgcfgrestore -f <font color="#ff0000"><b>$target_dir/lvm_$vg.conf</b></font>
$vg 2>/dev/null<br>
done < $PV_PARSE_CONF<br>
echo "done!"<br>
#</tt><br>
<br>
I notice 2 things :<br>
<ul>
<li>vgcfgrestor -f <tt>$target_dir/lvm_$vg.conf $vg => Use system
function mmap for read the file, and this mmap function is not
available on every remote filesystem (not in samba in my case). Then
because of this call failed, and restoration of vg failed.<br>
</tt></li>
<li>It could be better to use : pvcreate -ff --yes --uuid $uuid
---restorefile /tmp/lvm_$vg.conf $dev, because, pvcreate in this case,
create pv much identical than without (same topology if possible - see
man pvcreate). pvcreate use mmap syustem call to.<br>
</li>
</ul>
Patchs :<br>
-<tt>-- ocs-functions-ORIG 2008-02-14 08:50:36.732643764 +0000<br>
+++ ocs-functions 2008-02-14 09:42:13.013189303 +0000<br>
@@ -3307,14 +3307,20 @@<br>
# create PV first<br>
echo "Creating the PV... "<br>
while read vg dev uuid; do<br>
- pvcreate -ff --yes --uuid $uuid $dev<br>
+ cp $target_dir/lvm_$vg.conf /tmp/ # mmap not available on remote
disk<br>
+ pvcreate -ff --yes --uuid $uuid --zero y --restorefile
/tmp/lvm_$vg.conf $dev<br>
+ rm /tmp/lvm_$vg.conf<br>
done < $PV_PARSE_CONF<br>
echo "done!"<br>
<br>
# Restore the vg conf<br>
echo "Restoring the VG config... "<br>
while read vg dev uuid; do<br>
- vgcfgrestore -f $target_dir/lvm_$vg.conf $vg 2>/dev/null<br>
+ cp $target_dir/lvm_$vg.conf /tmp # mmap failed on some network fs<br>
+ vgcfgrestore -f /tmp/lvm_$vg.conf $vg 2>/dev/null<br>
+ rm /tmp/lvm_$vg.conf<br>
done < $PV_PARSE_CONF<br>
echo "done!"<br>
#</tt><br>
<br>
Same patch should be apply to ocs-onthefly.<br>
With this, all things is OK. I only copy localy file before starting
commands, and after remote temporary file.<br>
Don't you think it could be good to add command exit code for stop
restoration if pre-requires are not done ? [I know it could be
difficult in bash, but...]<br>
<br>
<br>
I test both new .iso images : <br>
-clonezilla-live-1.0.9-8.iso => kernel is to old, and my nic carte
e1000 (last model in HP desktop), is not recognize.<br>
-clonezilla-live-20080211-hardy-experimental.iso => Work well, and
my e1000, is well seen.<br>
<br>
Thanks.<br>
<br>
Gerald<br>
<br>
<pre class="moz-signature" cols="72">--
ASTREL "Raison & Télécom"
<a class="moz-txt-link-abbreviated" href="mailto:ghe...@as...">ghe...@as...</a> - <a class="moz-txt-link-freetext" href="http://www.astrel.fr">http://www.astrel.fr</a>
</pre>
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