Skip site navigation (1)Skip section navigation (2)
Date:      Fri, 9 Sep 2005 22:58:06 -0500
From:      Dan Nelson <dnelson@allantgroup.com>
To:        Danny Howard <dannyman@toldme.com>
Cc:        freebsd-scsi@freebsd.org, freebsd-questions@freebsd.org
Subject:   Re: Fibre Channel disks to two Systems?
Message-ID:  <20050910035805.GH84582@dan.emsphone.com>
In-Reply-To: <20050909185935.GI31865@ratchet.nebcorp.com>
References:  <20050909185935.GI31865@ratchet.nebcorp.com>

next in thread | previous in thread | raw e-mail | index | archive | help
In the last episode (Sep 09), Danny Howard said:
> As I understand it, I can have an FC loop with one or more drives,
> connected to two servers, and either server can talk to one or the
> other drives exclusively.  My QUESTION is: how is the arbitration
> done in FreeBSD?  You run camcontrol on either server and activate /
> deactivate drives in the loop?

Easiest way is with something like ports/sysutils/heartbeat.  No device
locking is needed.  Have the start script do a quick fsck, mount the
device, and start your server processes (or if pgsql can use raw disk
devices like Oracle, skip the fsck and mount steps).

-- 
	Dan Nelson
	dnelson@allantgroup.com



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20050910035805.GH84582>