diff --git a/items/virtual.items b/items/virtual.items
index 664fbc6..52650e7 100644
--- a/items/virtual.items
+++ b/items/virtual.items
@@ -1,3 +1,6 @@
 
 /* czy jesteśmy dłużej poza domem? */
 Switch sHolidayVacancy "Jesteśmy poza domem"
+
+Switch sBCacheWriteback "Bcache w trybie writeback" { exec=">[ON:systemctl start toggle-bcache@writeback] >[OFF:systemctl start toggle-bcache@writethrough]" }
+
diff --git a/rules/salon.kodi.rules b/rules/salon.kodi.rules
index 24668b7..e578737 100644
--- a/rules/salon.kodi.rules
+++ b/rules/salon.kodi.rules
@@ -8,6 +8,8 @@ then
 
 	Mpd_quodlibet_StartStop_expected.postUpdate(Mpd_quodlibet_StartStop.state)
 	Mpd_quodlibet_StartStop.sendCommand(OFF)
+
+	sBCacheWriteback.sendCommand(ON)
 end
 
 
@@ -41,5 +43,6 @@ then
 		sendCommand(sOWFS01, ON)
 	}
 
+	sBCacheWriteback.sendCommand(OFF)
 end
 
diff --git a/sitemaps/tech.sitemap b/sitemaps/tech.sitemap
index d27f13f..cb407d9 100644
--- a/sitemaps/tech.sitemap
+++ b/sitemaps/tech.sitemap
@@ -3,6 +3,8 @@ sitemap pbrk label="Szczegóły techniczne"
 	Frame {
 		Text item=dtSunset_Time
 		Text item=wClouds
+		Switch item=sHolidayVacancy
+		Switch item=sBCacheWriteback
 	}
 
 	Group label="Łączność" {