From: Tore Anderson <tore@linpro.no>
To: device-mapper development <dm-devel@redhat.com>
Cc: Michael Denney <mdenney@visto.com>, Geoff Quan <GQuan@visto.com>,
Kevin Koplar <kevin.koplar@hds.com>
Subject: Re: Round Robin vs Active/Passive
Date: Thu, 22 May 2008 14:00:12 +0200 [thread overview]
Message-ID: <4835604C.30107@linpro.no> (raw)
In-Reply-To: <ABFD05FF09D13E4883B757E75603624D011E961E@ex-sea1.vistocorp.com>
* Craig Simpson
> All is Beautiful now. Not logging any errors to messages so looks like "
> mpath_prio_hds_modular" is getting called correctly.
>
> Multipath -ll
> asm14 (1HITACHI_730600240013) dm-55 HITACHI,DF600F
> [size=64G][features=0][hwhandler=0]
> \_ round-robin 0 [prio=2][active]
> \_ 1:0:0:13 sdcp 69:208 [active][ready]
> \_ 0:0:0:13 sdn 8:208 [active][ready]
> \_ round-robin 0 [prio=0][enabled]
> \_ 0:0:1:13 sdbb 67:80 [active][ready]
> \_ 1:0:1:13 sded 128:80 [active][ready]
Yes, you can see from this output that sdcp and sdn have a prio of 1,
placing them in the same priority group (which in sum have a prio of 2),
so the prio-callout definitely works as it is supposed to. Everything
looks good, now you should try yanking some fibres (with lots of I/O
activity running) to make sure that it actually is able to handle a
failure scenario. Good luck.
Regards,
--
Tore Anderson
next prev parent reply other threads:[~2008-05-22 12:00 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <8a6b34b03e0524aa66c862534fee9b7a@www3.mail.volny.cz>
2008-05-21 11:41 ` INFO: task md2_resync:7950 blocked for more than 120 seconds Neil Brown
2008-05-21 14:48 ` Round Robin vs Active/Passive Craig Simpson
2008-05-21 15:32 ` Craig Simpson
2008-05-21 18:23 ` Tore Anderson
2008-05-21 20:21 ` Craig Simpson
2008-05-21 21:01 ` Tore Anderson
2008-05-21 21:49 ` Craig Simpson
2008-05-21 23:41 ` Craig Simpson
2008-05-22 12:00 ` Tore Anderson [this message]
2008-05-22 8:24 ` Domenico Viggiani
2008-05-22 11:57 ` Tore Anderson
2008-05-23 7:16 ` Hannes Reinecke
2008-05-23 8:00 ` Tore Anderson
2008-05-23 8:55 ` Hannes Reinecke
2008-05-23 9:42 ` Tore Anderson
2008-05-23 10:36 ` Domenico Viggiani
2008-05-23 10:46 ` Tore Anderson
2008-05-23 21:16 ` Sebastian Herbszt
2008-06-05 6:54 ` Tore Anderson
2008-06-05 7:20 ` Hannes Reinecke
2008-06-06 7:19 ` Tore Anderson
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