filer: retry deletes refused for an offline replica

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

weed/filer/filer_deletion.go

@@ -58,6 +58,7 @@ var retryablePatterns = []string{
 	"lookup failed",             // Volume server discovery issues
 	"too many requests",         // Rate limiting / backpressure
 	"try again",                 // Explicit retry suggestion
+	"replication copy count",    // A replica is offline; deletes wait for it to return
 }
 
 // DeletionRetryItem represents a file deletion that failed and needs to be retried

weed/filer/filer_deletion_test.go

@@ -192,6 +192,7 @@ func TestIsRetryableError(t *testing.T) {
 		{"service unavailable", true, "service unavailable"},
 		{"i/o timeout", true, "I/O timeout"},
 		{"broken pipe", true, "broken pipe"},
+		{"replication locations [1] is less than volume 9 replication copy count [2]", true, "replica offline"},
 		{"not found", false, "not found (not retryable)"},
 		{"invalid file id", false, "invalid input (not retryable)"},
 		{"", false, "empty error"},