RE: kern/59452: Move NFS wcc data messages to debug or control them via sysctl.

To: Christos Zoulas <christos%zoulas.com@localhost>
Subject: RE: kern/59452: Move NFS wcc data messages to debug or control them via sysctl.
From: Marcin Gondek <drixter%e-utp.net@localhost>
Date: Tue, 26 May 2026 15:45:50 +0000

Hi Christos,

Looking good from my side, few hours of run without any messages in dmesg about "wcc"

diskstation6.e-utp.net:/volume1/Applications on /opt type nfs (fsid: 0xb06/0x70b, reads: sync 0 async 0, writes: sync 0 async 0, [nfs: addr=2001:67c:21ec:ffee:18f2:a77c:dc08:aef6, port=2049, addrlen=28, sotype=1, proto=0, fhsize=0, flags=0x108a00<nfsv3,dumbtimr,resvport,nowccmsg>, wsize=32768, rsize=32768, readdirsize=4096, timeo=300, retrans=10, maxgrouplist=16, readahead=2, leaseterm=0, deadthresh=9])

diskstation6.e-utp.net:/volume1/Applications/ftp on /srv/ftp type nfs (fsid: 0xb07/0x70b, reads: sync 0 async 0, writes: sync 0 async 0, [nfs: addr=2001:67c:21ec:ffee:18f2:a77c:dc08:aef6, port=2049, addrlen=28, sotype=1, proto=0, fhsize=0, flags=0x108a00<nfsv3,dumbtimr,resvport,nowccmsg>, wsize=32768, rsize=32768, readdirsize=4096, timeo=300, retrans=10, maxgrouplist=16, readahead=2, leaseterm=0, deadthresh=9])

diskstation6.e-utp.net:/volume1/Applications/html on /var/www/html type nfs (fsid: 0xb08/0x70b, reads: sync 0 async 0, writes: sync 0 async 0, [nfs: addr=2001:67c:21ec:ffee:18f2:a77c:dc08:aef6, port=2049, addrlen=28, sotype=1, proto=0, fhsize=0, flags=0x108a00<nfsv3,dumbtimr,resvport,nowccmsg>, wsize=32768, rsize=32768, readdirsize=4096, timeo=300, retrans=10, maxgrouplist=16, readahead=2, leaseterm=0, deadthresh=9])

diskstation6.e-utp.net:/volume1/Applications/NetBSD on /srv/NetBSD type nfs (fsid: 0xb09/0x70b, reads: sync 0 async 0, writes: sync 0 async 0, [nfs: addr=2001:67c:21ec:ffee:18f2:a77c:dc08:aef6, port=2049, addrlen=28, sotype=1, proto=0, fhsize=0, flags=0x108a00<nfsv3,dumbtimr,resvport,nowccmsg>, wsize=32768, rsize=32768, readdirsize=4096, timeo=300, retrans=10, maxgrouplist=16, readahead=2, leaseterm=0, deadthresh=9])

#NFS
diskstation6.e-utp.net:/volume1/Applications     /opt                             nfs     rw,auto,dumbtimer,nowccmsg    0 0
diskstation6.e-utp.net:/volume1/Applications/ftp /srv/ftp                         nfs     rw,auto,dumbtimer,nowccmsg    0 0
diskstation6.e-utp.net:/volume1/Applications/html /var/www/html                   nfs     rw,auto,dumbtimer,nowccmsg    0 0
diskstation6.e-utp.net:/volume1/Applications/NetBSD /srv/NetBSD                  nfs     rw,auto,dumbtimer,nowccmsg    0 0

Thanks,

--
Marcin Gondek / Drixter
http://fido.e-utp.net/
AS56662

-----Original Message-----
From: netbsd-bugs-owner%NetBSD.org@localhost <netbsd-bugs-owner%NetBSD.org@localhost> On Behalf Of Christos Zoulas via gnats
Sent: Tuesday, May 26, 2026 1:55 PM
To: kern-bug-people%netbsd.org@localhost; gnats-admin%netbsd.org@localhost; netbsd-bugs%netbsd.org@localhost; Marcin Gondek <drixter%e-utp.net@localhost>
Subject: Re: kern/59452: Move NFS wcc data messages to debug or control them via sysctl.

The following reply was made to PR kern/59452; it has been noted by GNATS.

From: Christos Zoulas <christos%zoulas.com@localhost>
To: Marcin Gondek <drixter%e-utp.net@localhost>
Cc: gnats-bugs%netbsd.org@localhost, kern-bug-people%netbsd.org@localhost,  gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/59452: Move NFS wcc data messages to debug or control them via sysctl.
Date: Tue, 26 May 2026 07:52:18 -0400

 Yes, -o nowccmsg
 
 christos
 
 > On May 26, 2026, at 5:51=E2=80=AFAM, Marcin Gondek <drixter%e-utp.net@localhost> wro=
 te:
 >=20
 > =EF=BB=BFHi
 >=20
 > Ok, I see that I've done something wrong. Double checking...
 >=20
 > Thanks,
 >=20
 >=20
 > --
 > Marcin Gondek / Drixter
 > http://fido.e-utp.net/
 > AS56662
 >=20
 > -----Original Message-----
 > From: netbsd-bugs-owner%NetBSD.org@localhost <netbsd-bugs-owner%NetBSD.org@localhost> On Behal=  f Of Marcin Gondek via gnats  > Sent: Tuesday, May 26, 2026 10:30 AM  > To: kern-bug-people%netbsd.org@localhost; gnats-admin%netbsd.org@localhost; netbsd-bugs@netbsd=  .org; Marcin Gondek <drixter%e-utp.net@localhost>  > Subject: RE: kern/59452: Move NFS wcc data messages to debug or control th=  em via sysctl.
 >=20
 > The following reply was made to PR kern/59452; it has been noted by GNATS.=
 
 >=20
 > From: Marcin Gondek <drixter%e-utp.net@localhost>  > To: Christos Zoulas <christos%zoulas.com@localhost>  > Cc: "gnats-bugs%netbsd.org@localhost" <gnats-bugs%netbsd.org@localhost>,
 >    "kern-bug-people%netbsd.org@localhost" <kern-bug-people%netbsd.org@localhost>,
 >    "gnats-admin%netbsd.org@localhost" <gnats-admin%netbsd.org@localhost>, "netbsd-bugs@netbsd.=
 org"
 >    <netbsd-bugs%netbsd.org@localhost>
 > Subject: RE: kern/59452: Move NFS wcc data messages to debug or control th=  em  via sysctl.
 > Date: Tue, 26 May 2026 08:28:33 +0000
 >=20
 > Hi Christos
 >=20
 > Should I use some specific mount option?
 >=20
 > RC4+patch
 > NetBSD devil.e-utp.net 11.0_RC4 NetBSD 11.0_RC4 (DEVIL) #12: Mon May 25 20=  :=3D  > 18:27 CEST 2026  root%devil.e-utp.net@localhost:/usr/obj/sys/arch/amd64/compile/DEVI=
 L=3D
 >  amd64
 >=20
 > [  1523.851401] diskstation6.e-utp.net:/volume1/Applications/NetBSD: inacc=  u=3D  rate wcc data (ctime) detected, disabling wcc (ctime 1779738980.705549=
 207 1=3D  779738980.705549207, mtime 1779738980.705549207 1779738980.7055492=
 07)
 >=20
 > diskstation6.e-utp.net:/volume1/Applications/NetBSD on /srv/NetBSD type nf=  s=3D  >  (fsid: 0xb09/0x70b, reads: sync 0 async 0, writes: sync 0 async 0, [nfs: a=  =3D  ddr=3D3D2001:67c:21ec:ffee:18f2:a77c:dc08:aef6, port=3D3D2049, addrlen=3D=  3D28, so=3D  type=3D3D1, proto=3D3D0, fhsize=3D3D0, flags=3D3D0x8a00<nfsv3,d=  umbtimr,resvport>, w=3D  size=3D3D32768, rsize=3D3D32768, readdirsize=3D3D40=  96, timeo=3D3D300, retrans=3D3D10,=3D  >  maxgrouplist=3D3D16, readahead=3D3D2, leaseterm=3D3D0, deadthresh=3D3D9])=
 
 >=20
 > # NetBSD /etc/fstab
 > diskstation6.e-utp.net:/volume1/Applications/NetBSD /srv/NetBSD           =
  =3D
 >       nfs     rw,auto,dumbtimer    0 0
 >=20
 > Thanks,
 >=20
 > --
 > Marcin Gondek / Drixter
 > http://fido.e-utp.net/
 > AS56662
 >=20
 > -----Original Message-----
 > From: netbsd-bugs-owner%NetBSD.org@localhost <netbsd-bugs-owner%NetBSD.org@localhost> On Behal=  f=3D  >  Of Christos Zoulas via gnats  > Sent: Tuesday, May 26, 2026 12:00 AM  > To: kern-bug-people%netbsd.org@localhost; gnats-admin%netbsd.org@localhost; netbsd-bugs@netbsd=  .=3D  org; Marcin Gondek <drixter%e-utp.net@localhost>  > Subject: Re: kern/59452: Move NFS wcc data messages to debug or control th=  e=3D  m via sysctl.
 >=20
 > The following reply was made to PR kern/59452; it has been noted by GNATS.=
 
 >=20
 > From: Christos Zoulas <christos%zoulas.com@localhost>  > To: Marcin Gondek <drixter%e-utp.net@localhost>  > Cc: "gnats-bugs%netbsd.org@localhost" <gnats-bugs%netbsd.org@localhost>,  "kern-bug-people@net=  b=3D  sd.org" <kern-bug-people%netbsd.org@localhost>,  "gnats-admin%netbsd.org@localhost" <gnats=  -admi=3D  n%netbsd.org@localhost>,  "netbsd-bugs%netbsd.org@localhost" <netbsd-bugs%netbsd.org@localhost>  > Subject: Re: kern/59452: Move NFS wcc data messages to debug or control th=  e=3D  m  via sysctl.
 > Date: Mon, 25 May 2026 17:56:01 -0400
 >=20
 >  --Apple-Mail=3D3D_13296A71-6C33-4B2A-AA73-5DD9B7A2EBDE
 >  Content-Transfer-Encoding: quoted-printable  >  Content-Type: text/plain;
 >      charset=3D3Dutf-8
 > =3D20
 > =3D20
 > =3D20
 >>> On May 25, 2026, at 3:31=3D3DE2=3D3D80=3D3DAFPM, Marcin Gondek <drixter@=  e-utp.=3D  net> =3D3D  >>  wrote:
 >> =3D3D20
 >> Hi Christos,
 >> =3D3D20
 >> Patch is ok,  just applied to 11.0RC4 sources, recompiled kernel and =3D3=  D=3D
 >   userland, reboot and observe.
 >> Will let you know by EOW how this looks like, maybe there is chance to =3D=
   =3D3D  add into 11.0
 >> =3D3D20
 > =3D20
 >  Thanks, if it works I can ask for a pull-up.
 > =3D20
 >  christos
 > =3D20
 > =3D20
 >  --Apple-Mail=3D3D_13296A71-6C33-4B2A-AA73-5DD9B7A2EBDE
 >  Content-Transfer-Encoding: 7bit
 >  Content-Disposition: attachment;
 >      filename=3D3Dsignature.asc
 >  Content-Type: application/pgp-signature;
 >      name=3D3Dsignature.asc
 >  Content-Description: Message signed with OpenPGP  > =3D20  >  -----BEGIN PGP SIGNATURE-----  >  Comment: GPGTools - http://gpgtools.org  > =3D20  >  iF0EARECAB0WIQS+BJlbqPkO0MDBdsRxESqxbLM7OgUCahTFcQAKCRBxESqxbLM7
 >  Oh6OAKCdBiyrdv34ASzbMa1UhjmI/mIJeQCdHQQSG+58ZQeXoQB0km0I3R0rPkc=3D3D
 >  =3D3D+Tm8
 >  -----END PGP SIGNATURE-----
 > =3D20
 >  --Apple-Mail=3D3D_13296A71-6C33-4B2A-AA73-5DD9B7A2EBDE--
 > =3D20
 >=20
 >=20
 >=20
 > --
 > This message has been 'sanitized'.  This means that potentially  > dangerous content has been rewritten or removed.  The following  > log describes which actions were taken.
 >=20
 > Sanitizer (start=3D"1779789082"):
 >  Split unusually long word(s) in header.
 >  SanitizeFile (filename=3D"unnamed.txt", mimetype=3D"text/plain"):
 >    Match (names=3D"unnamed.txt", rule=3D"9"):
 >      Enforced policy: accept
 >=20
 >  Total modifications so far: 1
 >=20
 >=20
 > Anomy 0.0.0 : Sanitizer.pm
 > $Id: Sanitizer.pm,v 1.94 2006/01/02 16:43:10 bre Exp $

References:
- Re: kern/59452: Move NFS wcc data messages to debug or control them via sysctl.
  - From: Christos Zoulas via gnats

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