Comments on: load balancing active/active SAN’s http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/ Building blocks for virtualization... Thu, 18 Mar 2010 17:32:11 +0000 http://wordpress.org/?v=2.9.2 hourly 1 By: Daily Digest for 2009-02-02 | Mingle Mangle of my mind http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-2344 Daily Digest for 2009-02-02 | Mingle Mangle of my mind Tue, 03 Feb 2009 00:54:55 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-2344 [...] load balancing active/active SAN’s » Yellow Bricks [...] [...] load balancing active/active SAN’s » Yellow Bricks [...]

]]> By: Balancing LUN Paths on your ESX Hosts with PowerShell « VM Junkie http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-2315 Balancing LUN Paths on your ESX Hosts with PowerShell « VM Junkie Fri, 30 Jan 2009 00:25:35 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-2315 [...] pm After watching this video that was posted by the VI Toolkit team, I immediately thought of this script that was posted quite a while back on Yellow Bricks. I decided to try to recreate this script in [...] [...] pm After watching this video that was posted by the VI Toolkit team, I immediately thought of this script that was posted quite a while back on Yellow Bricks. I decided to try to recreate this script in [...]

]]> By: Duncan http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-2090 Duncan Sun, 21 Dec 2008 21:26:58 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-2090 Yes you can, but is your SAN an active/active SAN or an Active/Passive SAN. If it's an A/P SAN you must use MRU! Check the VMware compatability guide before you make the change! You would just need to add the line for the set to fixed bit. Duncan Yes you can, but is your SAN an active/active SAN or an Active/Passive SAN. If it’s an A/P SAN you must use MRU! Check the VMware compatability guide before you make the change!

You would just need to add the line for the set to fixed bit.

Duncan

]]> By: varya http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-2089 varya Sun, 21 Dec 2008 21:05:52 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-2089 hi,i am a noob. i have 256 LUNs with MRU policy. i want to change all of them to fixed; can i use the above script? hi,i am a noob.
i have 256 LUNs with MRU policy. i want to change all of them to fixed; can i use the above script?

]]> By: Duncan Epping http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-1789 Duncan Epping Fri, 21 Nov 2008 20:22:20 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-1789 probably indeed probably indeed

]]> By: pichita http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-1788 pichita Fri, 21 Nov 2008 19:27:28 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-1788 >Peter mmm... dos2unix ? >Peter
mmm… dos2unix ?

]]> By: Virtualization Short Take #23 - blog.scottlowe.org - The weblog of an IT pro specializing in virtualization, storage, and servers http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-1739 Virtualization Short Take #23 - blog.scottlowe.org - The weblog of an IT pro specializing in virtualization, storage, and servers Wed, 19 Nov 2008 18:41:05 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-1739 [...] installations with lots of LUNs and an active/active SAN may find this script published by Duncan very helpful. The problem that this script addressed underscores the need for robust multipathing [...] [...] installations with lots of LUNs and an active/active SAN may find this script published by Duncan very helpful. The problem that this script addressed underscores the need for robust multipathing [...]

]]> By: Peter http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-1536 Peter Mon, 03 Nov 2008 11:48:34 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-1536 Script is not working for me... grep: 2: No such file or directory grep: paths.: No such file or directory awk: cmd. line:1: .{print awk: cmd. line:1: ^ parse error awk: cmd. line:2: (END OF FILE) awk: cmd. line:2: parse error grep: 4: No such file or directory grep: paths.: No such file or directory awk: cmd. line:1: .{print awk: cmd. line:1: ^ parse error awk: cmd. line:2: (END OF FILE) awk: cmd. line:2: parse error grep: 6: No such file or directory grep: paths.: No such file or directory awk: cmd. line:1: .{print awk: cmd. line:1: ^ parse error awk: cmd. line:2: (END OF FILE) awk: cmd. line:2: parse error grep: 8: No such file or directory grep: paths.: No such file or directory awk: cmd. line:1: .{print awk: cmd. line:1: ^ parse error awk: cmd. line:2: (END OF FILE) awk: cmd. line:2: parse error What did ido wrong? Script is not working for me…

grep: 2: No such file or directory
grep: paths.: No such file or directory
awk: cmd. line:1: .{print
awk: cmd. line:1: ^ parse error
awk: cmd. line:2: (END OF FILE)
awk: cmd. line:2: parse error
grep: 4: No such file or directory
grep: paths.: No such file or directory
awk: cmd. line:1: .{print
awk: cmd. line:1: ^ parse error
awk: cmd. line:2: (END OF FILE)
awk: cmd. line:2: parse error
grep: 6: No such file or directory
grep: paths.: No such file or directory
awk: cmd. line:1: .{print
awk: cmd. line:1: ^ parse error
awk: cmd. line:2: (END OF FILE)
awk: cmd. line:2: parse error
grep: 8: No such file or directory
grep: paths.: No such file or directory
awk: cmd. line:1: .{print
awk: cmd. line:1: ^ parse error
awk: cmd. line:2: (END OF FILE)
awk: cmd. line:2: parse error

What did ido wrong?

]]> By: bishop http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-1317 bishop Fri, 17 Oct 2008 20:10:04 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-1317 Ugh. The previous looked much better before the webform bobbitted the spacing. Ugh. The previous looked much better before the webform bobbitted the spacing.

]]> By: bishop http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/comment-page-1/#comment-1316 bishop Fri, 17 Oct 2008 20:09:03 +0000 http://www.yellow-bricks.com/2008/04/01/load-balancing-activeactive-sans/#comment-1316 Toss a sleep into the loop there. Our EMC SAN doesn't seem to be robust enough to handle all those path changes without wedging itself. Our customers were not pleased when we had to shut down an entire cluster, un-present a LUN, bring up the cluster without the VMs using that LUN, allow the SAN to run a verification and then re-present the LUN and bring up the VMs. so: then COUNTER="1" + sleep 1800 fi done done Don't be like me, kids. Keep your SAN people happy. Toss a sleep into the loop there. Our EMC SAN doesn’t seem to be robust enough to handle all those path changes without wedging itself. Our customers were not pleased when we had to shut down an entire cluster, un-present a LUN, bring up the cluster without the VMs using that LUN, allow the SAN to run a verification and then re-present the LUN and bring up the VMs.

so:

then
COUNTER=”1″
+ sleep 1800
fi
done
done

Don’t be like me, kids. Keep your SAN people happy.

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