Download your favorite Linux distribution at LQ ISO.
Go Back > Forums > Linux Forums > Linux - Server
User Name
Linux - Server This forum is for the discussion of Linux Software used in a server related context.


  Search this Thread
Old 11-10-2010, 04:01 PM   #1
LQ Newbie
Registered: Nov 2010
Posts: 1

Rep: Reputation: 0
Cluster storage power fencing help

I currently have a GFS/cman cluster setup for data storage. Now to make it truly redundant I'm adding a external fencing (power fencing)mechanism into the cluster.

Now this is where my question begins.

Let say for example, I have Node 1 and 2. Node 2 unexpectedly crashes, so Node1 detects an issue within the cluster. Now node1 will attempt to power fence node2.

Q1) Does power fencing require a ACK from the fencing device ? Let say the power switch had crashed. When node sends the fencing signal to the power switch, there is no response coming back from the fencing device. In this case, does node1 will wait until it receive a response from the fencing device before continuing the cluster operations ?

Q2) Does the cluster operation resume right after the power fencing starts? Or does it wait until it hears something back from node2 or a fencing timeout before it resumes operation ?

Q3) Which power fencing device is the most reliable ? I assume APC power switches ?



Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fencing problem in 2 node cluster neeravsingh Linux - Enterprise 0 09-27-2010 01:15 AM
New to cluster fencing and STONITH Halex Linux - Server 1 08-03-2010 01:42 PM
fencing problem with cluster eldo Linux - Server 0 11-27-2009 02:38 AM
Disable fencing in a non-shared storage cluster tomard Linux - Enterprise 0 03-30-2009 07:14 PM
Cluster Fencing??? your_shadow03 Linux - Server 3 10-10-2008 11:48 AM > Forums > Linux Forums > Linux - Server

All times are GMT -5. The time now is 04:43 PM.

Main Menu
Write for LQ is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration