From a94bb18c0a05a1dddcb3304472a3c2dd4483399e Mon Sep 17 00:00:00 2001
From: rjones <devnull@localhost>
Date: Fri, 11 Jan 2008 16:45:42 +0000
Subject: [PATCH] Pull in some changes from the HP branch.

---
 virt-p2v.sh | 34 ++++++++++++++++++++++++----------
 1 file changed, 24 insertions(+), 10 deletions(-)

diff --git a/virt-p2v.sh b/virt-p2v.sh
index 0007e54..7bae812 100755
--- a/virt-p2v.sh
+++ b/virt-p2v.sh
@@ -251,6 +251,13 @@ function search_parts {
     # $parts is returned.
 }
 
+# This generates a snapshot device name from a device name.
+# eg. sda -> snap_sda
+# Sets $dname.
+function snap_name {
+    dname=`echo -n snap_"$1" | tr -cs '[:alnum:]' _`
+}
+
 #----------------------------------------------------------------------
 # Network configuration functions.
 
@@ -540,13 +547,14 @@ rm -f /etc/lvm/cache/.cache
 
 # Snapshot the block devices.
 for d in $devices_to_send; do
-    log snapshotting block device /dev/$d ...
+    snap_name $d
+    log snapshotting block device /dev/$d to $dname ...
 
-    snapshot $d snap_$d
+    snapshot $d $dname
 
     # The block devices are whole disks.  Use kpartx to repartition them.
-    log running kpartx -a /dev/mapper/snap_$d ...
-    kpartx -a /dev/mapper/snap_$d
+    log running kpartx -a /dev/mapper/$dname ...
+    kpartx -a /dev/mapper/$dname
 done
 
 # Rescan for LVs.
@@ -560,8 +568,11 @@ vgchange -a y
 
 log mount $root_filesystem as /mnt/root
 
-if [ -f /dev/mapper/snap_$root_filesystem ]; then
-    mount /dev/mapper/snap_$root_filesystem /mnt/root
+snap_name $root_filesystem
+root_filesystem_dname="$dname"
+
+if [ -b /dev/mapper/$root_filesystem_dname ]; then
+    mount /dev/mapper/$root_filesystem_dname /mnt/root
 else
     mount /dev/$root_filesystem /mnt/root
 fi
@@ -645,12 +656,14 @@ for dev in $devices_to_send; do
     name="$basename-$rdev.img"
     log sending $dev to $name
 
-    sectors=`blockdev --getsize /dev/mapper/snap_$dev`
+    snap_name $dev
+
+    sectors=`blockdev --getsize /dev/mapper/$dname`
 
     gigs=$(($sectors/2/1024/1024))
     echo "Sending /dev/$dev (${gigs} GB) to remote machine"
 
-    dd if=/dev/mapper/snap_$dev | gzip --best |
+    dd if=/dev/mapper/$dname | gzip --best |
     case "$remote_transport" in
 	ssh)
 	    ssh -p "$remote_port" "$remote_host" \
@@ -669,8 +682,9 @@ done
 # Clean up.
 
 #for d in $devices_to_send; do
-#    kpartx -d /dev/mapper/snap_$d
-#    drop_snapshot snap_$d
+#    snap_name $d
+#    kpartx -d /dev/mapper/$dname
+#    drop_snapshot $dname
 #done
 
 # This file must end with a newline
-- 
1.8.3.1