[dm-devel] Device-mapper-multipath RDAC
Chandra Seetharaman
sekharan at us.ibm.com
Mon Sep 24 18:33:32 UTC 2007
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 at redhat.com
> https://www.redhat.com/mailman/listinfo/dm-devel
--
----------------------------------------------------------------------
Chandra Seetharaman | Be careful what you choose....
- sekharan at us.ibm.com | .......you may get it.
----------------------------------------------------------------------
More information about the dm-devel
mailing list