From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 504B21ADC81 for ; Thu, 16 Jan 2025 21:12:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737061956; cv=none; b=DSThps8fl6cckCAERwTGRRcXaBjylpfEeIf8+brer/Ty5RFbaTn45iI2JLw+zKdGnay05FQEL7TbnbCbAghjHzgdzZOPNJIhkENSLtvhaUZAYMGCOzXuZpZGbqDCLvXQFLCiw5LHLzR9hUPCdS1+7ITD3CJgGrPOgv9wyjeWjPc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1737061956; c=relaxed/simple; bh=lVUPBBL0uwAKUwmHMuNiPSP1opm5pbcUUPrFwJiiEtA=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=f7Hh3Cj0pX4+kL7mO6kiJ+WBb53U6wgJNeqjo006s5l7IjHjSdchaEI8jTmXrgRr3ZkguOtIgMBI894ZfUoxGvZppGgW5ywOo0MiwxIL0fFnccX7fqvahTsWkAz0px78rSV33hNOKnHNxPpvQd6kq5uSt3wCT8QreOlM8z8+TLg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WN8ojhOf; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WN8ojhOf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4656AC4CED6; Thu, 16 Jan 2025 21:12:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1737061955; bh=lVUPBBL0uwAKUwmHMuNiPSP1opm5pbcUUPrFwJiiEtA=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=WN8ojhOfrh/TMeEcrWA8Qqu7npvvwy0KVPBumZX3GqlrFXCu/udZ5P2WKT5+dEAJ8 7frTEySaQmqFRHG8+8iedVaw4QuCZsbpk7dPQeAq7B81sj6BY/MAzMfpBQLka16pjr WeVkcalV4p+q2T/DB1CmyprcIuu91uwyU+pIjQuOXkuqHtp4nESoDsmOOCgD5WeJBP nALks5K0R71OdcL5v6fjNt6HRQhTELJyi5ogevJIriB158Mb3aTDqdI6zfiIBFRE+J Fqw/H/gwcXY4QeF9KDx0/9ohDA7Tq00AbraG+V9RKsPKCZmi1Yws/bGQoPXd1vRblF IfyJbvsNzakMg== Message-ID: Subject: Re: [nfs-utils PATCH] nfsdctl: debug logging fixups From: Jeff Layton To: Steve Dickson , Scott Mayhew Cc: yoyang@redhat.com, linux-nfs@vger.kernel.org Date: Thu, 16 Jan 2025 16:12:34 -0500 In-Reply-To: <54e55254-c4b7-4d0b-b123-fb1a225fa497@redhat.com> References: <0068c0d811976aca15818b60192a96ca017893f8.camel@kernel.org> <20250115170051.8947-1-smayhew@redhat.com> <590522bf-77f6-4e31-a2fb-5613f68c87da@redhat.com> <00fd29bc-205a-4c02-8c98-3c3876a2d0a7@redhat.com> <45246f77-40ce-43c7-bdbf-c8cb2b4dea68@redhat.com> <54e55254-c4b7-4d0b-b123-fb1a225fa497@redhat.com> Autocrypt: addr=jlayton@kernel.org; prefer-encrypt=mutual; keydata=mQINBE6V0TwBEADXhJg7s8wFDwBMEvn0qyhAnzFLTOCHooMZyx7XO7dAiIhDSi7G1NPxw n8jdFUQMCR/GlpozMFlSFiZXiObE7sef9rTtM68ukUyZM4pJ9l0KjQNgDJ6Fr342Htkjxu/kFV1Wv 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linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2025-01-16 at 16:00 -0500, Steve Dickson wrote: >=20 > On 1/16/25 6:50 AM, Jeff Layton wrote: > > On Wed, 2025-01-15 at 15:53 -0500, Steve Dickson wrote: > > >=20 > > > On 1/15/25 1:33 PM, Jeff Layton wrote: > > > > On Wed, 2025-01-15 at 12:47 -0500, Steve Dickson wrote: > > > > >=20 > > > > > On 1/15/25 12:35 PM, Jeff Layton wrote: > > > > > > On Wed, 2025-01-15 at 12:32 -0500, Steve Dickson wrote: > > > > > > >=20 > > > > > > > On 1/15/25 12:00 PM, Scott Mayhew wrote: > > > > > > > > Move read_nfsd_conf() out of autostart_func() and into main= (). Remove > > > > > > > > hard-coded NFSD_FAMILY_NAME in the first error message in > > > > > > > > netlink_msg_alloc() and make the error messages in netlink_= msg_alloc() > > > > > > > > more descriptive/unique. > > > > > > > >=20 > > > > > > > > Signed-off-by: Scott Mayhew > > > > > > > > --- > > > > > > > > SteveD - this would go on top of Jeff's "nfsdctl: add suppo= rt for new > > > > > > > > lockd configuration interface" patches. > > > > > > > Got it... > > > > > > >=20 > > > > > > > >=20 > > > > > > > > utils/nfsdctl/nfsdctl.c | 8 ++++---- > > > > > > > > 1 file changed, 4 insertions(+), 4 deletions(-) > > > > > > > >=20 > > > > > > > > diff --git a/utils/nfsdctl/nfsdctl.c b/utils/nfsdctl/nfsdct= l.c > > > > > > > > index 003daba5..f81c78ae 100644 > > > > > > > > --- a/utils/nfsdctl/nfsdctl.c > > > > > > > > +++ b/utils/nfsdctl/nfsdctl.c > > > > > > > > @@ -436,7 +436,7 @@ static struct nl_msg *netlink_msg_alloc= (struct nl_sock *sock, const char *family > > > > > > > > =20 > > > > > > > > id =3D genl_ctrl_resolve(sock, family); > > > > > > > > if (id < 0) { > > > > > > > > - xlog(L_ERROR, "%s not found", NFSD_FAMILY_NAME); > > > > > > > > + xlog(L_ERROR, "failed to resolve %s generic netlink fami= ly", family); > > > > > > > > return NULL; > > > > > > > > } > > > > > > > > =20 > > > > > > > > @@ -447,7 +447,7 @@ static struct nl_msg *netlink_msg_alloc= (struct nl_sock *sock, const char *family > > > > > > > > } > > > > > > > > =20 > > > > > > > > if (!genlmsg_put(msg, 0, 0, id, 0, 0, 0, 0)) { > > > > > > > > - xlog(L_ERROR, "failed to allocate netlink message"); > > > > > > > > + xlog(L_ERROR, "failed to add generic netlink headers to = netlink message"); > > > > > > > > nlmsg_free(msg); > > > > > > > > return NULL; > > > > > > > > } > > > > > > > > @@ -1509,8 +1509,6 @@ static int autostart_func(struct nl_s= ock *sock, int argc, char ** argv) > > > > > > > > } > > > > > > > > } > > > > > > > > =20 > > > > > > > > - read_nfsd_conf(); > > > > > > > > - > > > > > > > > grace =3D conf_get_num("nfsd", "grace-time", 0); > > > > > > > > ret =3D lockd_configure(sock, grace); > > > > > > > > if (ret) { > > > > > > > > @@ -1728,6 +1726,8 @@ int main(int argc, char **argv) > > > > > > > > xlog_syslog(0); > > > > > > > > xlog_stderr(1); > > > > > > > > =20 > > > > > > > > + read_nfsd_conf(); > > > > > > > > + > > > > > > > > /* Parse the preliminary options */ > > > > > > > > while ((opt =3D getopt_long(argc, argv, "+hdsV", pre_= options, NULL)) !=3D -1) { > > > > > > > > switch (opt) { > > > > > > > Ok... at this point we a prettier error message > > > > > > > $ nfsdctl nlm > > > > > > > nfsdctl: failed to resolve lockd generic netlink family > > > > > > >=20 > > > > > > > But the point of this argument is: > > > > > > >=20 > > > > > > > Get information about NLM (lockd) settings in the current net > > > > > > > namespace. This subcommand takes no arguments. > > > > > > >=20 > > > > > > > How is that giving information from the running lockd? > > > > > > >=20 > > > > > > > What am I missing?? > > > > > > >=20 > > > > > >=20 > > > > > > You're missing a kernel that has the required netlink interface= . To > > > > > > test this properly, you'll need to patch your kernel, until tha= t patch > > > > > > makes it upstream. > > > > > Okay... I figured it was something like that. But doesn't make se= nse to > > > > > wait until the patch is in upstream so the argument can be proper= ly > > > > > tested? Why add an argument that will always fail? > > > > >=20 > > > >=20 > > > > Why can't it be properly tested? It's just a matter of running a mo= re > > > > recent kernel that has the right interfaces. That should be in linu= x- > > > > next soon (if not already). > > > I'm doing my testing on a 6.13.0-0.rc6 which will soon be > > > a 6.14 kernel... its my understanding the needed kernel > > > patch will be in the 6.15 kernel... Please correct me > > > if that is not true. > > >=20 > > > >=20 > > > > I think the question is whether we want to wait until the kernel > > > > interfaces trickle out into downstream distro kernels before we shi= p > > > > any userland support in an upstream project (nfs-utils). > > > Yes! As soon as the kernel support hits the upstream kernel, > > > we will be good to go. I just don't want to put a feature > > > in that will fail %100 of the time. > > >=20 > > > >=20 > > > > If you want to wait until it hits Fedora Rawhide kernels, then you'= re > > > > looking at about 10-12 weeks from now. If you want to wait until it > > > > makes it into a stable Fedora release kernel then we're looking at > > > > about 6 months from now. > > > nfsdctl is in all current Fedora stable releases, which > > > is the reason I'm pushing back. I do not want to put something > > > in that will make it fail. That just does not make sense to me. > > >=20 > > > >=20 > > > > I'll note that that it took 6 months to get the original nfsdctl > > > > patches merged because of the lag on kernel patches making it into > > > > distros, and I think that was way too long. > > > It took that long because there were issues with the command. > > > In which I was glad to help debug some of the issues... > > >=20 > > > New technology takes time to develop... I just think this > > > is one of those cases. > > >=20 > >=20 > > Ok, your call. To be clear though, that patch is part of my solution > > for this bug. > >=20 > > https://issues.redhat.com/browse/RHEL-71698 > >=20 > > If you're going to delay it for several months, then can I trouble you > > to come up with a fix for it that you find acceptable? > How is this a fix when the subcommand will not work > without the kernel patch? >=20 The nfs-server.service file defines this: ExecStart=3D/bin/sh -c '/usr/sbin/nfsdctl autostart || /usr/sbin/rpc.nf= sd'=20 When the lockd netlink interface is needed, but isn't available, then startup will fall back to just calling rpc.nfsd. Currently, the grace_period setting is just ignored, so that fallback just doesn't happen. Very few people will need this; only those that set lockd's ports, or that set the grace_period. > I'm sure the subcommand works with the kernel patch > but without it... what's the point? --=20 Jeff Layton