From: Alexei_Roudnev (Alexei_Roudnev_at_exigengroup.com)
Date: Thu Oct 05 2006 - 20:13:47 CEST
Message-ID: <0b5401c6e8aa$00a62290$6f31a8c0@sjc.exigengroup.com> From: "Alexei_Roudnev" <Alexei_Roudnev@exigengroup.com> Date: Thu, 5 Oct 2006 11:13:47 -0700 Subject: Re: [suse-sles-e] Multipath blacklisting
Why do you need to blacklist these LUN's instead of just evacuating data and
deleting on the SAN system (or better from the LUN map on SUN system)?
What happen if you remove LUN without blacklisting?
----- Original Message -----
From: "Michael Kershaw" <mike.kershaw@gmail.com>
To: <suse-sles-e@suse.com>
Sent: Thursday, October 05, 2006 9:04 AM
Subject: [suse-sles-e] Multipath blacklisting
> Hi All,
>
> I've been using multipathing a solid 6 months now in a couple of
> (18) node production 10g clusters. What I'm tasked with right now, is
> deporting about 30 luns or so from one of the clusters for recycling,
> and before we remove the luns from the SAN side of things, I want to
> blacklist them from the device-mapper, and then remove them from the
> OS. Problem is now, I can't get the blacklisting to work for me.
> Have any of you out there been able to blacklist fiber luns via the
> UID of the lun? As it stands, I'm trying with a configuration that
> looks like this:
>
> devnode_blacklist {
> wwid 3600096a1303030343030303030383262
> devnode "^(dm-|fd|loop|md|ram|raw|scd|sr|st|sda) [0-9]*"
> devnode "^hd[a-z] [0-9]*"
> devnode sda # internal disk
> }
>
> Being that I've never done this before, Is it safe to assume that if
> in fact it was working, that the UID(or wwid) of that lun, would no
> longer be present in the /dev/mapper/ directory? If i'm overthinking
> things here, or just plain old missing something, I'd appreciate a
> little guidance.
>
> Thanks In Advance,
> Mike Kershaw
>
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