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Subject: Re: [RFC PATCH 0/7] SUNRPC: Create sysfs files for changing IP
From:   Chuck Lever <chuck.lever@oracle.com>
In-Reply-To: <7003D8A9-3B95-4B36-84EC-99D4D1806366@oracle.com>
Date:   Wed, 13 Jan 2021 16:23:51 -0500
Cc:     Bruce Fields <bfields@fieldses.org>,
        Linux NFS Mailing List <linux-nfs@vger.kernel.org>
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References: <20210111214143.553479-1-Anna.Schumaker@Netapp.com>
 <CE510EA5-1E3F-4516-A948-10A0FF31C94F@oracle.com>
 <20210112165911.GH9248@fieldses.org>
 <CAFX2JfmYrCSYfCCGgQ0eghU3WSqk=T38wxkJ7Q42ORw-NFeFQg@mail.gmail.com>
 <7003D8A9-3B95-4B36-84EC-99D4D1806366@oracle.com>
To:     Anna Schumaker <schumaker.anna@gmail.com>
Precedence: bulk


> On Jan 13, 2021, at 2:48 PM, Chuck Lever <chuck.lever@oracle.com> =
wrote:
>=20
>> On Jan 13, 2021, at 2:23 PM, Anna Schumaker =
<schumaker.anna@gmail.com> wrote:
>>=20
>> On Tue, Jan 12, 2021 at 11:59 AM J. Bruce Fields =
<bfields@fieldses.org> wrote:
>>>=20
>>> On Tue, Jan 12, 2021 at 08:09:09AM -0500, Chuck Lever wrote:
>>>> Hi Anna-
>>>>=20
>>>>> On Jan 11, 2021, at 4:41 PM, schumaker.anna@gmail.com wrote:
>>>>>=20
>>>>> From: Anna Schumaker <Anna.Schumaker@Netapp.com>
>>>>>=20
>>>>> It's possible for an NFS server to go down but come back up with a
>>>>> different IP address. These patches provide a way for =
administrators to
>>>>> handle this issue by providing a new IP address for xprt sockets =
to
>>>>> connect to.
>>>>>=20
>>>>> This is a first draft of the code, so any thoughts or suggestions =
would
>>>>> be greatly appreciated!
>>>>=20
>>>> One implementation question, one future question.
>>>>=20
>>>> Would /sys/kernel/net be a little better? or /sys/kernel/sunrpc ?
>>=20
>> Possibly! I was trying to match /sys/fs/nfs, but I can definitely
>> change this if another location is better.
>=20
> Ah... since this is a supplement to the mount() interface, maybe
> placing this new API under /sys/fs/nfs/ might make some sense.

Or you could implement it with "-o remount,addr=3Dnew-address".


--
Chuck Lever