# check for filestreams
_check_filestreams_support || _notrun "filestreams not available"
+# Disable the scratch rt device to avoid test failures relating to the rt
+# bitmap consuming free space in our small data device and throwing off the
+# filestreams allocator.
+unset SCRATCH_RTDEV
+
# use small AGs for frequent stream switching
_scratch_mkfs_xfs -d agsize=20m,size=2g >> $seqres.full 2>&1 ||
_fail "mkfs failed"