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From: Trent Nelson <trent@snakebite.org>
To: Alexander Motin <mav@FreeBSD.org>
Date: Thu, 10 May 2012 17:37:30 -0700
Thread-Topic: Teaching gmultipath about path cost/priority
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Subject: Re: Teaching gmultipath about path cost/priority
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On May 10, 2012, at 1:09 PM, Alexander Motin wrote:

> On 10.05.2012 19:36, Trent Nelson wrote:
>>=20
>>     Something along the lines of:
>>=20
>>     + # gmultipath active FRED /dev/da2
>>     + GEOM_MULTIPATH: da2 now active path in Fred
>>=20
>>     ....would be perfect!  Don't care what it's called; active, failover=
,
>>     switch, select, activate.
>=20
> It may be not very convenient, but there is a `gmultipath rotate`=20
> command to change active path.

Ah, didn't even know that existed (it's not mentioned in gmultipath(8)).
I'll look into it, thanks.=20

>>     (I presume gmultipath could affect the path switch in a cleaner fash=
ion
>>      than forcing the disk to fail?  i.e. make sure all outstanding I/O =
is
>>      finished first, etc.)
>=20
> Now path switching doesn't waits for running requests completion. Is it=20
> a problem for you?
>=20

Still building the fabric, so that's completely and utterly a phantom requi=
rement
at the moment ;-)


	Trent.=