Re: [nfs-utils PATCH] nfs4id: a tool to create and persist nfs4 client uniquifiers

[Steve Dickson <steved@redhat.com>]

On 2/8/22 11:22 AM, Benjamin Coddington wrote:
> On 8 Feb 2022, at 11:04, Steve Dickson wrote:
> 
>> Hello,
>>
>> On 2/4/22 7:56 AM, Benjamin Coddington wrote:
>>> The nfs4id program will either create a new UUID from a random source or
>>> derive it from /etc/machine-id, else it returns a UUID that has already
>>> been written to /etc/nfs4-id.  This small, lightweight tool is 
>>> suitable for
>>> execution by systemd-udev in rules to populate the nfs4 client 
>>> uniquifier.
>>>
>>> Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
>>> ---
>>>   .gitignore               |   1 +
>>>   configure.ac             |   4 +
>>>   tools/Makefile.am        |   1 +
>>>   tools/nfs4id/Makefile.am |   8 ++
>>>   tools/nfs4id/nfs4id.c    | 184 +++++++++++++++++++++++++++++++++++++++
>>>   tools/nfs4id/nfs4id.man  |  29 ++++++
>>>   6 files changed, 227 insertions(+)
>>>   create mode 100644 tools/nfs4id/Makefile.am
>>>   create mode 100644 tools/nfs4id/nfs4id.c
>>>   create mode 100644 tools/nfs4id/nfs4id.man
>> Just a nit... naming convention... In the past
>> we never put the protocol version in the name.
>> Do a ls tools and utils directory and you
>> see what I mean....
>>
>> Would it be a problem to change the name from
>> nfs4id to nfsid?
> 
> Not at all.. 
Good...

> and I think there's a lot of room for naming discussions about
> the file to store the id too:
> 
> Trond sent /etc/nfs4_uuid
> Neil suggests /etc/netns/NAME/nfs.conf.d/identity.conf
> Ben sent /etc/nfs4-id (to match /etc/machine-id)
Question... is it kosher to be writing /etc which is
generally on the root filesystem?

By far Neil suggestion is the most intriguing... but
on the containers I'm looking at there no /etc/netns
directory.

I had to install the iproute package to do the
"ip netns identify" which returns NULL...
also adds yet another dependency on nfs-utils.

So if "ip netns identify" does return NULL what directory
path should be used?

I'm all for making things container friendly but I'm
also a fan of keeping things simple... So
how about /etc/nfs.conf.d/identity.conf or
/etc/nfs.conf.d/nfsid.conf?

> 
> Maybe the tool wants an option to specify the file?
This is probably not a bad idea... It is a common practice

steved.

> 
> Ben
>