From: Chandra Seetharaman <sekharan@us.ibm.com>
To: device-mapper development <dm-devel@redhat.com>
Subject: Re: Device-mapper-multipath RDAC
Date: Mon, 24 Sep 2007 11:33:32 -0700 [thread overview]
Message-ID: <1190658812.1933.141.camel@linuxchandra> (raw)
In-Reply-To: <200709241706.26322.npf-mlists@eurotux.com>
On Mon, 2007-09-24 at 17:06 +0100, Nuno Fernandes wrote:
> hello,
>
> Just a question:
>
> With recent support for rdac hardware handler in kernel 2.6.23-rc7, what
> configuration should be in storage DS4700? AVT (Automatic Volume transfer)
> turned on or off?
Hardware handler is needed only for RDAC mode, AVT would work without
the hardware handler.
The decision to use RDAC or AVT depends on your configuration.
>
> When it's turned on, luns keep on jumping from controller to controller..
dm-multipath will use the other path (in AVT mode, IOW, jump) only if
I/O in the current path fails.
>
> Thanks
> Nuno Fernandes
>
> --
> dm-devel mailing list
> dm-devel@redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
--
----------------------------------------------------------------------
Chandra Seetharaman | Be careful what you choose....
- sekharan@us.ibm.com | .......you may get it.
----------------------------------------------------------------------
next prev parent reply other threads:[~2007-09-24 18:33 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-24 16:06 Device-mapper-multipath RDAC Nuno Fernandes
2007-09-24 17:01 ` James Fillman
2007-09-24 17:21 ` Nuno Fernandes
2007-09-24 18:33 ` Chandra Seetharaman [this message]
2007-09-25 7:50 ` Nuno Fernandes
2007-09-25 5:54 ` Hannes Reinecke
2007-09-25 7:52 ` Nuno Fernandes
2007-10-02 17:13 ` Chandra Seetharaman
2008-02-13 22:09 ` Multipath-tools not seeing replaced RAID controller S. J. van Harmelen
2008-02-14 1:30 ` Chandra Seetharaman
2008-02-14 8:04 ` S. J. van Harmelen
2007-09-25 8:05 ` Device-mapper-multipath RDAC Nuno Fernandes
2007-09-25 9:57 ` Device-mapper-multipath RDAC [SOLVED] Nuno Fernandes
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