Use dd to zero out disk space (hopefully faster)

2013-06-19 17:26:39 -07:00
parent 8f113b48cc
commit 5c5a1eae8a
1 changed files with 5 additions and 2 deletions
@@ -578,8 +578,11 @@ function vm_clean {
    git config --global user.name "None"
    git config --global user.email "None"

-    echo "Zeroing out file blocks for efficient compaction"
-    time sudo cp /dev/zero /tmp/; sync ; sleep 1 ; sync ; sudo rm -f /tmp/zero
+    # Note: you can shrink the .vmdk in vmware using
+    # vmware-vdiskmanager -k *.vmdk
+    echo "Zeroing out file blocks for efficient compaction..."
+    time sudo dd if=/dev/zero of=/tmp/zero bs=1M
+    sync ; sleep 1 ; sync ; sudo rm -f /tmp/zero

 }