On Tue, Mar 02, 2021 at 05:33:23PM -0500, Steve Dickson wrote:
>
>
> On 2/24/21 3:30 PM, J. Bruce Fields wrote:
> > On Fri, Feb 19, 2021 at 03:08:08PM -0500, Steve Dickson wrote:
> >> nfsv4.exportd is a daemon that will listen for only v4 mount upcalls.
> >> The idea is to allow distros to build a v4 only package
> >> which will have a much smaller footprint than the
> >> entire nfs-utils package.
> >>
> >> exportd uses no RPC code, which means none of the
> >> code or arguments that deal with v3 was ported,
> >> this again, makes the footprint much smaller.
> >
> > How much smaller?
> Will a bit smaller... but a number of daemons like nfsd[cld,clddb,cldnts]
> need to also come a long.
Could we get some numbers?
Looks like nfs-utils in F33 is about 1.2M:
$ rpm -qi nfs-utils|grep ^Size
Size : 1243512
$ strip utils/mountd/mountd
$ ls -lh utils/mountd/mountd
-rwxrwxr-x. 1 bfields bfields 128K Mar 3 10:12 utils/mountd/mountd
$ strip utils/exportd/exportd
$ ls -lh utils/exportd/exportd
-rwxrwxr-x. 1 bfields bfields 106K Mar 3 10:12 utils/exportd/exportd
So replacing mountd by exportd saves us about 20K out of 1.2M. Is it
worth it?
> >> The following options were ported:
> >> * multiple threads
> >> * state-directory-path option
> >> * junction support (not tested)
> >>
> >> The rest of the mountd options were v3 only options.
> >
> > There's also --manage-gids.
> Right... a patch was posted...
>
> >
> > If you want nfsv4-only at runtime, you can always run rpc.mountd with
> > -N2 -N3 to turn off the MOUNT protocol support.
> The end game is not to run mountd at all...
>
> >
> > If you don't even want v2/f3 code on your system, then you may have to
> > do something like this, but why is that important?
> Container friendly... Not bring in all the extra daemons v3
> needs is a good thing... esp rpcbind.
Looking at the output of
$ for f in $(rpm -ql nfs-utils); do if [ -f $f ]; then ls -ls $f; fi; done|sort -n
It looks like removing statd, sm-notify, showount and their man pages
would free about another 170K.
I think that's about how much we'd save by seperating out a separate
documentation package.
I don't know, what sort of gains are container folks asking for?
--b.
>
> steved.
>
> >
> > --b.
> >
> >>
> >> V2:
> >> * Added two systemd services: nfsv4-exportd and nfsv4-server
> >> * nfsv4-server starts rpc.nfsd -N 3, so nfs.conf mod not needed.
> >>
> >> V3: Changed the name from exportd to nfsv4.exportd
> >>
> >> V4: Added compile flag that will compile in the NFSv4 only server
> >>
> >> Steve Dickson (7):
> >> exportd: the initial shell of the v4 export support
> >> exportd: Moved cache upcalls routines into libexport.a
> >> exportd: multiple threads
> >> exportd/exportfs: Add the state-directory-path option
> >> exportd: Enabled junction support
> >> exportd: systemd unit files
> >> exportd: Added config variable to compile in the NFSv4 only server.
> >>
> >> .gitignore | 1 +
> >> configure.ac | 14 ++
> >> nfs.conf | 4 +
> >> support/export/Makefile.am | 3 +-
> >> {utils/mountd => support/export}/auth.c | 4 +-
> >> {utils/mountd => support/export}/cache.c | 46 +++-
> >> support/export/export.h | 34 +++
> >> {utils/mountd => support/export}/fsloc.c | 0
> >> {utils/mountd => support/export}/v4root.c | 0
> >> {utils/mountd => support/include}/fsloc.h | 0
> >> systemd/Makefile.am | 6 +
> >> systemd/nfs.conf.man | 10 +
> >> systemd/nfsv4-exportd.service | 12 +
> >> systemd/nfsv4-server.service | 31 +++
> >> utils/Makefile.am | 4 +
> >> utils/exportd/Makefile.am | 65 +++++
> >> utils/exportd/exportd.c | 276 ++++++++++++++++++++++
> >> utils/exportd/exportd.man | 81 +++++++
> >> utils/exportfs/exportfs.c | 21 +-
> >> utils/exportfs/exportfs.man | 7 +-
> >> utils/mountd/Makefile.am | 5 +-
> >> 21 files changed, 606 insertions(+), 18 deletions(-)
> >> rename {utils/mountd => support/export}/auth.c (99%)
> >> rename {utils/mountd => support/export}/cache.c (98%)
> >> create mode 100644 support/export/export.h
> >> rename {utils/mountd => support/export}/fsloc.c (100%)
> >> rename {utils/mountd => support/export}/v4root.c (100%)
> >> rename {utils/mountd => support/include}/fsloc.h (100%)
> >> create mode 100644 systemd/nfsv4-exportd.service
> >> create mode 100644 systemd/nfsv4-server.service
> >> create mode 100644 utils/exportd/Makefile.am
> >> create mode 100644 utils/exportd/exportd.c
> >> create mode 100644 utils/exportd/exportd.man
> >>
> >> --
> >> 2.29.2
> >
