Changes between Version 207 and Version 208 of Processing

Timestamp:

Feb 22, 2016, 1:06:07 PM (10 years ago)

Author:

Mark Huber

Comment:

--

Processing

@@ -639 +639 @@
 == Raid BBU and Nodes with Targeted Data ==
 
-Many times a node becomes problematic when the raid BBU goes offline and WriteThrough (rather than WriteBuffer) mode is activated -- definitely happens for a data targeted node, but can also happen for an untargeted node if there are very few targeted nodes with free space. The node should be checked and if BBU needs attention then notify the ipp-dev list for the appropriate person to do so. To check the BBU status, there are two possible commands depending on the node but try the command as given on a machine that doesn't support it the it should be fine (requires sudo and be careful with these commands not to mistype or truncate) -- 
+Many times a node becomes problematic when the raid BBU goes offline and WriteThrough (rather than WriteBuffer) mode is activated -- definitely happens for a data targeted node, but can also happen for an untargeted node if there are very few targeted nodes with free space. The node should be checked and if BBU needs attention then notify the ipp-dev list for the appropriate person to do so. To check the BBU status, there will likely be an entry in the /var/log/messages from MR_MONITOR for WB changed to WT
+{{{
+Jan 14 06:23:49 ipp087 MR_MONITOR[16845]: <MRMON195> Controller ID:  0   BBU disabled; changing WB logical drives to WT, Forced WB VDs are not affected
+Jan 14 06:23:49 ipp087 Event ID:195
+Jan 14 06:23:49 ipp087 MR_MONITOR[16845]: <MRMON054> Controller ID:  0   Policy change on VD:   0 
+Jan 14 06:23:49 ipp087 Current   =   Current Write Policy: Write Back;
+}}}
+and/or a ps-ipp-ops email like 
+{{{
+Controller ID: 0  Battery has failed and cannot support data retention. Please replace the battery
+Generated on:Mon Feb 22 08:56:06 2016
+}}}
+
+There are also two possible commands depending on the node but try the command as given on a machine that doesn't support it the it should be fine (requires sudo and be careful with these commands not to mistype or truncate) -- 
 
  * ipp083 (add more to list here as go)