From: Weston Andros Adamson <dros@netapp.com>
To: Chuck Lever <chuck.lever@oracle.com>
Cc: trond@netapp.com, linux-nfs list <linux-nfs@vger.kernel.org>
Subject: Re: NFS: pnfs ipv6 and multipath parsing
Date: Wed, 18 May 2011 16:29:49 -0400 [thread overview]
Message-ID: <955779EA-D374-4C9A-B260-5200E3C19F8F@netapp.com> (raw)
In-Reply-To: <74A7DF78-2AF3-43EA-978B-E53252045F04@netapp.com>
Some clarification:
If ipv6.ko can't be found, this patch will still try to connect to the v6 address, fail (EIO) and revert to the MDS.
In order to properly handle this, we need to handle errors on connect and try another multipath address.
I feel that this is really part of the other "half" of the multipath work (actually using more than one address), which we will get to very soon and should be treated as a separate patch. Unless there are objections...
-dros
On May 18, 2011, at 4:19 PM, Weston Andros Adamson wrote:
> Yeah, that should work too. Like other parts of fs/nfs/, I relied on rpc_pton() to allow or disallow parsing ipv6 addresses.
>
> -dros
>
> On May 18, 2011, at 4:11 PM, Chuck Lever wrote:
>
>>
>> On May 18, 2011, at 3:57 PM, Weston Andros Adamson wrote:
>>
>>> These two patches add support for IPv6 dataserver connectivity and
>>> parsing all multipath addresses.
>>>
>>> IPv6: basically same patch as before:
>>> - no longer calls kzalloc() while holding spinlock
>>> - i verified that everything works as expected when CONFIG_IPV6 is not defined
>>
>> You'll also need to worry about when IPv6 is built in a kernel module, but ipv6.ko cannot be loaded.
>>
>> --
>> Chuck Lever
>> chuck[dot]lever[at]oracle[dot]com
>>
>>
>>
>>
>
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next prev parent reply other threads:[~2011-05-18 20:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-18 19:57 NFS: pnfs ipv6 and multipath parsing Weston Andros Adamson
2011-05-18 19:57 ` [PATCH 1/2] NFS: pnfs IPv6 support Weston Andros Adamson
2011-05-18 19:57 ` [PATCH 2/2] NFS: Parse and store all multipath DS addresses Weston Andros Adamson
2011-05-18 20:11 ` NFS: pnfs ipv6 and multipath parsing Chuck Lever
2011-05-18 20:19 ` Weston Andros Adamson
2011-05-18 20:29 ` Weston Andros Adamson [this message]
2011-05-18 20:41 ` Chuck Lever
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