1 files changed, 75 insertions, 0 deletions

diff --git a/src/initrd/samizdat-cdrom-copy b/src/initrd/samizdat-cdrom-copy
new file mode 100755
index 0000000..d4920b9
--- /dev/null
+++ b/src/initrd/samizdat-cdrom-copy
@@ -0,0 +1,75 @@
+#!/bin/sh
+md_name=$1
+lv_name=$2
+lv_dev=$3
+cdrom_loopdev=$4
+cdrom_dev=$5
+
+. lvm-create.sh
+
+mdadm_wait_remove()
+{
+  # We should perhaps use mdadm --monitor's RebuildFinished event.
+
+  local dev="$1" disk="$2" tries
+  if ! mdadm --wait "$dev"; then
+    tries=1000
+    while ! mdadm --detail --test "$dev"; do
+      [ $tries -gt 0 ] || return 1
+      sleep 1
+      tries=$((tries-1))
+    done
+  fi
+
+  mdadm "$dev" --fail "$disk" || return 1
+  tries=100
+  while ! mdadm "$dev" --remove "$disk"; do
+    [ $tries -gt 0 ] || return 1
+    sleep 1
+    tries=$((tries-1))
+  done
+  return 0
+}
+
+
+Done()
+{
+  mdadm --grow "$md_name" -n 1 --force
+  lvm lvrename "$lv_name".tmp "${lv_name#*/}"
+  losetup -d "$cdrom_loopdev"
+  [ -e /etc/mtab ] || ln -sf /proc/mounts /etc/mtab
+  eject "$cdrom_dev"
+  echo "[$$] Done."
+}
+
+exec >>/var/log/samizdat-cdrom-copy.log 2>&1
+echo "[$$] Waiting for $cdrom_loopdev ($cdrom_dev) to be removed from $md_name."
+
+if mdadm_wait_remove "$md_name" "$cdrom_loopdev"; then
+  Done;
+else
+  echo "[$$] Warning: mdadm_wait_remove() returned $?.  Doing manual copy with sg_dd (using continue-on-error)."
+  mdadm -D "$md_name"
+  mdadm "$md_name" --fail "$lv_dev".tmp
+  mdadm -D "$md_name"
+  mdadm "$md_name" --remove "$lv_dev".tmp
+  mdadm -D "$md_name"
+  mdadm  /dev/md55 --grow -n1 --force
+  mdadm -D "$md_name"
+
+  sizelimit=$(get_cdrom_sizelimit "$cdrom_dev")
+
+  if sg_dd bs=2048 ${sizelimit:+count=$((sizelimit/2048))} iflag=coe,coe,coe if="$cdrom_dev" of="$lv_dev".tmp retries=42; then
+    echo "[$$] sg_dd succeeded."
+    mdadm "$md_name" --grow -n 2 --assume-clean --add "$lv_dev".tmp
+    mdadm -D "$md_name"
+    if mdadm_wait_remove "$md_name" "$cdrom_loopdev"; then
+      Done;
+    else
+      echo "[$$] Error: mdadm_wait_remove() returned $? after sg_dd.  Cannot eject CDROM!"
+    fi
+  else
+    echo "[$$] Error: sg_dd returned $?.  Cannot eject CDROM!"
+  fi
+fi
+