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

["Marcin Gondek via gnats" <gnats-admin%NetBSD.org@localhost>]

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

From: Marcin Gondek <drixter%e-utp.net@localhost>
To: "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@localhost"
	<netbsd-bugs%netbsd.org@localhost>
Cc: 
Subject: RE: kern/59452: Move NFS wcc data messages to debug or control them
 via sysctl.
Date: Sun, 1 Jun 2025 12:06:38 +0000

 Hi Michael
 
 I've setup now as you suggested, It's the same, box restarted to be sure:
 
 [   190.659022] diskstation6.e-utp.net:/volume1/homes/drixter: inaccurate w=
 cc data (ctime) detected, disabling wcc (ctime 1748779290.941608597 1748779=
 290.941608597, mtime 1748779290.941608597 1748779290.941608597)
 
 devil# mount -vv | grep drixter | grep noac
 diskstation6.e-utp.net:/volume1/homes/drixter on /home/users/drixter type n=
 fs (automounted, fsid: 0xb0e/0x70b, reads: sync 0 async 0, writes: sync 0 a=
 sync 0, [nfs: addr=3D2001:67c:21ec:ffee:18f2:a77c:dc08:aef6, port=3D2049, a=
 ddrlen=3D28, sotype=3D1, proto=3D0, fhsize=3D0, flags=3D0x88247<soft,wsize,=
 rsize,intr,nfsv3,resvport,noac>, wsize=3D8192, rsize=3D8192, readdirsize=3D=
 4096, timeo=3D300, retrans=3D10, maxgrouplist=3D16, readahead=3D2, leaseter=
 m=3D0, deadthresh=3D9])
 devil#
 
 devil# cat /etc/auto_homes
 * -rw,noac,soft,intr,rsize=3D8192,wsize=3D8192 diskstation6.e-utp.net:/volu=
 me1/homes/&
 
 noac is included.
 
 
 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 Michael van Elst via gnats
 Sent: Sunday, June 1, 2025 1:45 PM
 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 the=
 m via sysctl.
 
 The following reply was made to PR kern/59452; it has been noted by GNATS.
 
 From: mlelstv%serpens.de@localhost (Michael van Elst)
 To: gnats-bugs%netbsd.org@localhost
 Cc:=20
 Subject: Re: kern/59452: Move NFS wcc data messages to debug or control the=
 m via sysctl.
 Date: Sun, 1 Jun 2025 11:41:06 -0000 (UTC)
 
  drixter%e-utp.net@localhost writes:
 =20
  >I know that such messages should not generally appear if the NFS server i=
 s working properly. But unfortunately it is not repairable everywhere -> Sy=
 nology NFS, hence the question about the possibility of moving these messag=
 es to the DEBUG variant or maybe make it controlable via sysctl.
 =20
  >[ 514378.384585] diskstation6.e-utp.net:/volume1/Applications/NetBSD: re-=
 enabling wcc  >[ 514557.066122] diskstation6.e-utp.net:/volume1/Application=
 s/NetBSD: inaccurate wcc data (ctime) detected, disabling wcc (ctime 174837=
 4671.270579777 1748374671.270579777, mtime 1748374671.270579777 1748374671.=
 270579777)
 =20
  Most of the messages appear to be "re-enabling" + "disabling wcc" again wi=
 thin a few seconds.
 =20
  What happens when you just disable the attribute cache when mounting with =
 'mount -o noac' ? It's hardly used anyway.
 =20