diff -u mylvmbackup-0.13/debian/changelog mylvmbackup-0.13/debian/changelog
--- mylvmbackup-0.13/debian/changelog
+++ mylvmbackup-0.13/debian/changelog
@@ -1,3 +1,16 @@
+mylvmbackup (0.13-2ubuntu1~8~precise1) precise; urgency=low
+
+  * Auto build.
+
+ -- Neil Wilson <neil@aldur.co.uk>  Tue, 04 Dec 2012 17:44:10 +0000
+
+mylvmbackup (0.13-2ubuntu1) UNRELEASED; urgency=low
+
+  * debian/patches/1086313-add-thin-support.dpatch: 
+    add support for thin snapshots (LP: #1086313)
+
+ -- Neil Wilson <neil@aldur.co.uk>  Tue, 04 Dec 2012 10:45:41 +0000
+
 mylvmbackup (0.13-2) unstable; urgency=medium
 
   * Set umask before creating the backup. (closes: #518471)
diff -u mylvmbackup-0.13/debian/patches/00list mylvmbackup-0.13/debian/patches/00list
--- mylvmbackup-0.13/debian/patches/00list
+++ mylvmbackup-0.13/debian/patches/00list
@@ -3,0 +4 @@
+1086313-add-thin-support.dpatch
only in patch2:
unchanged:
--- mylvmbackup-0.13.orig/debian/bzr-builder.manifest
+++ mylvmbackup-0.13/debian/bzr-builder.manifest
@@ -0,0 +1,2 @@
+# bzr-builder format 0.3 deb-version {debupstream}-2ubuntu1~8
+lp:~brightbox/ubuntu/precise/mylvmbackup/fix-for-1086313 revid:neil@aldur.co.uk-20121204104613-ob92r3fb3lg5v3kh
only in patch2:
unchanged:
--- mylvmbackup-0.13.orig/debian/patches/1086313-add-thin-support.dpatch
+++ mylvmbackup-0.13/debian/patches/1086313-add-thin-support.dpatch
@@ -0,0 +1,83 @@
+#! /bin/sh /usr/share/dpatch/dpatch-run
+## Description: add some description
+## Origin/Author: add some origin or author
+## Bug: bug URL
+## 1086313-add-thin-support.dpatch by Neil Wilson <neil@aldur.co.uk>
+##
+## All lines beginning with `## DP:' are a description of the patch.
+## DP: No description.
+
+@DPATCH@
+diff -urNad '--exclude=CVS' '--exclude=.svn' '--exclude=.git' '--exclude=.arch' '--exclude=.hg' '--exclude=_darcs' '--exclude=.bzr' mylvmbackup~/man/mylvmbackup.pod mylvmbackup/man/mylvmbackup.pod
+--- mylvmbackup~/man/mylvmbackup.pod	2012-12-04 10:44:05.000000000 +0000
++++ mylvmbackup/man/mylvmbackup.pod	2012-12-04 10:44:57.762590948 +0000
+@@ -305,6 +305,12 @@
+ not be useful if the snapshot is removed. You need to manually unmount this
+ directory before invoking mylvmbackup again.
+ 
++=item B<--thin>
++
++If this option is given, mylvmbackup will expect that the LVM volume is
++using thin provisioning and that the snapshot will use physical space
++from the existing thin pool. Any size specified with I<lvsize> is ignored.
++
+ =item B<--relpath=string>
+ 
+ Relative path on the logical volume to the MySQL data directory (no leading or
+diff -urNad '--exclude=CVS' '--exclude=.svn' '--exclude=.git' '--exclude=.arch' '--exclude=.hg' '--exclude=_darcs' '--exclude=.bzr' mylvmbackup~/mylvmbackup.pl.in mylvmbackup/mylvmbackup.pl.in
+--- mylvmbackup~/mylvmbackup.pl.in	2012-12-04 10:44:05.000000000 +0000
++++ mylvmbackup/mylvmbackup.pl.in	2012-12-04 10:44:57.762590948 +0000
+@@ -87,6 +87,7 @@
+ my $syslog_socktype;
+ my $syslog_facility;
+ my $syslog_remotehost;
++my $use_thin_snapshots;
+ 
+ # Load defaults into variables
+ load_defaults();
+@@ -301,6 +302,7 @@
+   $keep_snapshot=$cfg->val ('misc', 'keep_snapshot', $keep_snapshot);
+   $keep_mount=$cfg->val ('misc', 'keep_mount', $keep_mount);
+   $quiet=$cfg->val ('misc', 'quiet', $quiet);
++  $use_thin_snapshots=$cfg->val ('misc', 'thin', $use_thin_snapshots);
+ 
+   $mountdir=$cfg->val ('fs', 'mountdir', $mountdir);
+   $backupdir=$cfg->val ('fs', 'backupdir', $backupdir);
+@@ -366,6 +368,7 @@
+     "skip_hooks" => \&skip_hooks,
+     "keep_snapshot" => \&keep_snapshot,
+     "keep_mount" => \&keep_mount,
++    "thin" => \&use_thin_snapshots,
+     "quiet" => \&quiet,
+ 
+ # fs
+@@ -435,6 +438,7 @@
+   $keep_snapshot=0;
+   $keep_mount=0;
+   $quiet=0;
++  $use_thin_snapshots=0;
+ 
+ # fs
+   $mountdir='/var/tmp/mylvmbackup/mnt/';
+@@ -628,7 +632,9 @@
+ 
+ sub create_lvm_snapshot 
+ { 
+-  my $command= "$lvcreate -s --size=$lvsize --name=$backuplv /dev/$vgname/$lvname";
++  my $params = '';
++  $params = "--size=$lvsize" unless $use_thin_snapshots;
++  my $command= "$lvcreate -s $params --name=$backuplv /dev/$vgname/$lvname";
+   return run_command("taking LVM snapshot", $command);
+ }
+ 
+@@ -749,6 +755,10 @@
+   $keep_mount = 1;
+ }
+ 
++sub use_thin_snapshots {
++  $use_thin_snapshots = 1;
++}
++
+ sub quiet {
+   $quiet = 1;
+ }