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>
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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
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