7719: permit never-delte to be set to false; add warning that datamanager is not...

[arvados.git] / services / keepstore / volume.go

diff --git a/services/keepstore/volume.go b/services/keepstore/volume.go
index 9bf291bdea28dce8b05baae738c8d42fbca7481c..7966c41b92bd89958308ec77765f0b7a5a1f0fd9 100644 (file)
--- a/services/keepstore/volume.go
+++ b/services/keepstore/volume.go
@@ -195,6 +195,11 @@ type Volume interface {
        // will fail because it is full, but Mtime or Delete can
        // succeed -- then Writable should return false.
        Writable() bool
+
+       // Replication returns the storage redundancy of the
+       // underlying device. It will be passed on to clients in
+       // responses to PUT requests.
+       Replication() int
 }
 
 // A VolumeManager tells callers which volumes can read, which volumes