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

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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@xxxxxxxxxx>
---
  .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





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