diff --git a/files/common/lib/modprobe.d/10-zfs.conf b/files/common/lib/modprobe.d/10-zfs.conf
index cb873399..3fb3ba5e 100644
--- a/files/common/lib/modprobe.d/10-zfs.conf
+++ b/files/common/lib/modprobe.d/10-zfs.conf
@@ -137,3 +137,12 @@ options zfs zfs_deadman_synctime_ms=60000
 # enabled, thus we disable it here until we can get that fixed.
 #
 options zfs zap_shrink_enabled=0
+
+#
+# On object storage, block cloning causes a VM panic on small instances.  The
+# problem is that we do an allocation proportional to the size of the vdev,
+# which is huge for object storage. We could try to change the block cloning
+# code to behave better in the presence of large vdevs, but for now, we should
+# just disable the feature.
+#
+options zfs zfs_bclone_enabled=0
\ No newline at end of file