diff --git a/files/common/lib/modprobe.d/10-zfs.conf b/files/common/lib/modprobe.d/10-zfs.conf
index 5b309cdd..b5d5f4d7 100644
--- a/files/common/lib/modprobe.d/10-zfs.conf
+++ b/files/common/lib/modprobe.d/10-zfs.conf
@@ -115,3 +115,10 @@ options zfs zvol_threads=256
 # link creation can get up to the order of a minute or more.
 #
 options zfs zfs_vdev_open_timeout_ms=180000
+
+#
+# Wait up to 1 minute when opening a ZVOL. We've found the defualt value
+# is insufficient for some workloads (e.g. scale testing), resulting in
+# VDB errors (e.g. MSSQL VDB refresh failing).
+#
+options zfs zvol_open_timeout_ms=60000