Date: Wed, 22 Jul 1998 16:40:41 +0200 From: Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE> To: Matthew Thyer <thyerm@camtech.net.au>, Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE> Cc: freebsd-current@freefall.cdrom.com Subject: Re: panic in one year old 3.0-current Message-ID: <19980722164041.A6323@gil.physik.rwth-aachen.de> In-Reply-To: <35B5F2E8.5818B999@camtech.net.au>; from Matthew Thyer on Wed, Jul 22, 1998 at 11:40:48PM %2B0930 References: <199807220830.KAA05011@gilberto.physik.RWTH-Aachen.DE> <35B5D5AE.4801C673@camtech.net.au> <19980722153930.A6043@gil.physik.rwth-aachen.de> <35B5F2E8.5818B999@camtech.net.au>
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On Wed, Jul 22, 1998 at 11:40:48PM +0930, Matthew Thyer wrote: > The attached messages will give you some idea on how recently > NFS has been a major problem. > > It is so much better now that I think your should upgrade your > machines to current as of now. > > There are still some rumours (not just rumours I think) of the > odd niggling VM bug but overall current is in quite good shape > as of a few hours ago (when I last built the world). I will give it a try. I have an application (8 MB image) that used to seg fault when invoked from a NFS mounted directory. That bug has been (kludge ?) fixed (dfr - Doug Rabson) 1997/05/17 in vfs_bio.c. I'll have to test this app first against -current. > > I'm not one to comment on internals I'm just going on daily use > (and abuse) of two current systems which I regularly update. > > Ask Peter Wemm for his opinion on the current state of NFS. > > I suspect there are still some problems in abnormal situations > (NFS server crash may still be confusing the NFS client). > > > Christoph Kukulies wrote: > > > > On Wed, Jul 22, 1998 at 09:36:06PM +0930, Matthew Thyer wrote: > > > NFS had lots of problems until quite recently. > > > > Sigh. Tell this a person to whom you always argued "I'm using FreeBSD > > over Linux for it's stability what networking is concerned" :-) > > Maybe things are even worse under Linux. > > > > NFS was indeed involved in my case alse (see below). > > > > > > > > I was restricting my NFS use to the version 2 protocol until very > > > recently. > > > > > > Now it seems to work very well with version 3 on recent current. > > > > -- > > --Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de > > -- > /=====================================================================\ > |Work: Matthew.Thyer@dsto.defence.gov.au | Home: thyerm@camtech.net.au| > \=====================================================================/ > "If it is true that our Universe has a zero net value for all conserved > quantities, then it may simply be a fluctuation of the vacuum of some > larger space in which our Universe is imbedded. In answer to the > question of why it happened, I offer the modest proposal that our > Universe is simply one of those things which happen from time to time." > E. P. Tryon from "Nature" Vol.246 Dec.14, 1973 > Received: from y.physics.usyd.edu.au (y.physics.usyd.edu.au [129.78.129.110]) by goliath.camtech.net.au (8.8.5/8.8.2) with ESMTP id AAA29105 for <thyerm@camtech.net.au>; Mon, 1 Jun 1998 00:57:40 +0930 (CST) > Received: from hub.freebsd.org (hub.FreeBSD.ORG [204.216.27.18]) by y.physics.usyd.edu.au (8.8.5/8.8.2) with ESMTP id BAA01353; Mon, 1 Jun 1998 01:30:19 +1000 (EST) > Received: from localhost (daemon@localhost) > by hub.freebsd.org (8.8.8/8.8.8) with SMTP id HAA00950; > Sun, 31 May 1998 07:53:59 -0700 (PDT) > (envelope-from owner-freebsd-current) > Received: by hub.freebsd.org (bulk_mailer v1.6); Sun, 31 May 1998 07:51:37 -0700 > Received: (from majordom@localhost) > by hub.freebsd.org (8.8.8/8.8.8) id HAA00438 > for freebsd-current-outgoing; Sun, 31 May 1998 07:51:37 -0700 (PDT) > (envelope-from owner-freebsd-current@FreeBSD.ORG) > Received: from dyson.iquest.net (dyson.iquest.net [198.70.144.127]) > by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id HAA00415 > for <current@FreeBSD.ORG>; Sun, 31 May 1998 07:51:30 -0700 (PDT) > (envelope-from toor@dyson.iquest.net) > Received: (from root@localhost) > by dyson.iquest.net (8.8.8/8.8.8) id JAA01243; > Sun, 31 May 1998 09:51:05 -0500 (EST) > (envelope-from toor) > From: "John S. Dyson" <toor@dyson.iquest.net> > Message-Id: <199805311451.JAA01243@dyson.iquest.net> > Subject: Re: jumbo nfs commit comming up soon... (ie: in a few hours) > In-Reply-To: <199805311053.SAA02491@spinner.netplex.com.au> from Peter Wemm at "May 31, 98 06:53:55 pm" > To: peter@netplex.com.au (Peter Wemm) > Date: Sun, 31 May 1998 09:51:05 -0500 (EST) > Cc: current@FreeBSD.ORG > X-Mailer: ELM [version 2.4ME+ PL38 (25)] > MIME-Version: 1.0 > Content-Transfer-Encoding: 7bit > Sender: owner-freebsd-current@FreeBSD.ORG > X-Loop: FreeBSD.ORG > Content-Type: text/plain; charset=US-ASCII > > > I've got a series of large NFS commits coming up shortly. 'cvs diff -u | > > wc -l sys/nfs' is in the order of 6000 lines, so I'll try and break it up > > into smaller components where practical. > > > > This means that while things are in transit, the kernel and/or utilities > > may well not compile. Don't be too suprised if your world falls over if > > you try and build from sources mid-commit. (I have not checked all the > > userland stuff yet, amd in particular). > > > > One of the bigger components is a long -> int32_t change for Alpha and > > other 64 bit support. > > > It is *wonderful* that you are making progress on NFS. That is one of > our major problems, and making progress on that is a major contribution. > > A personal thank you!!! > > John > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > > Received: from y.physics.usyd.edu.au (y.physics.usyd.edu.au [129.78.129.110]) by goliath.camtech.net.au (8.8.5/8.8.2) with ESMTP id CAA16865 for <thyerm@camtech.net.au>; Wed, 22 Apr 1998 02:00:21 +0930 (CST) > Received: from hub.freebsd.org (hub.FreeBSD.ORG [204.216.27.18]) by y.physics.usyd.edu.au (8.8.5/8.8.2) with ESMTP id CAA19082; Wed, 22 Apr 1998 02:32:36 +1000 (EST) > Received: from localhost (daemon@localhost) > by hub.freebsd.org (8.8.8/8.8.8) with SMTP id JAA07951; > Tue, 21 Apr 1998 09:32:29 -0700 (PDT) > (envelope-from owner-freebsd-current) > Received: by hub.freebsd.org (bulk_mailer v1.6); Tue, 21 Apr 1998 09:23:13 -0700 > Received: (from majordom@localhost) > by hub.freebsd.org (8.8.8/8.8.8) id JAA05977 > for freebsd-current-outgoing; Tue, 21 Apr 1998 09:23:11 -0700 (PDT) > (envelope-from owner-freebsd-current@FreeBSD.ORG) > Received: from panzer.plutotech.com (ken@panzer.plutotech.com [206.168.67.125]) > by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA05941 > for <freebsd-current@freebsd.org>; Tue, 21 Apr 1998 16:23:03 GMT > (envelope-from ken@panzer.plutotech.com) > Received: (from ken@localhost) > by panzer.plutotech.com (8.8.8/8.8.5) id KAA23401; > Tue, 21 Apr 1998 10:22:54 -0600 (MDT) > From: "Kenneth D. Merry" <ken@plutotech.com> > Message-Id: <199804211622.KAA23401@panzer.plutotech.com> > Subject: Re: NFS corruption > In-Reply-To: <199804210559.PAA09123@troll.dtir.qld.gov.au> from Stephen McKay at "Apr 21, 98 03:59:47 pm" > To: syssgm@dtir.qld.gov.au (Stephen McKay) > Date: Tue, 21 Apr 1998 10:22:54 -0600 (MDT) > Cc: freebsd-current@FreeBSD.ORG > X-Mailer: ELM [version 2.4ME+ PL28s (25)] > MIME-Version: 1.0 > Content-Transfer-Encoding: 7bit > Sender: owner-freebsd-current@FreeBSD.ORG > X-Loop: FreeBSD.ORG > Content-Type: text/plain; charset=US-ASCII > > Stephen McKay wrote... > > NFS is eating my .depend files during a make world. > > I can confirm this, but not from make world. I've got a source > tree here that blows up when I compile over NFS. > > > The client is a Compaq Prolinea 486SX33 with 12Mb ram and 2 small SCSI-1 > > disks on an Adaptec 1542b. The server is a pentium 133 with 32Mb ram and > > 2 4Gb IBM UW SCSI disks on a FirePort 40 (ncr 875). > > > > The source and objects are on the server and NFS mounted to the client. The > > client mounts src readonly and obj read-write (and async, if that does > > anything under NFS). > > I have a similar setup, except the source and objects are in the > same place, and the mount is r/w and not async. > > > The client kernel (and userland) is -current from April 19 (April 18 US time), > > and has DIAGNOSTIC set. The server is -current from March 12, just before > > the big VM changes. > > In my case, the client is from a week or two ago, and the server > kernel was built from yesterday's sources. > > > Memory is short on the client, so paging is brisk. There is plenty of > > swap space free. I don't run CAM or softupdates. > > I'm running CAM, I don't think that has anything to do with it. > The client only has 24MB of memory, but it doesn't look like I'm running > into swap at all: > > Device 1K-blocks Used Avail Capacity Type > /dev/da0b 122880 0 122752 0% Interleaved > > > I ran 'make -j2 buildworld' and several hours later observed unusual error > > messages complaining about garbage in .depend files. Many .depend files > > were affected. Each .depend file was broken similarly. They would start > > normally, then the corruption would start on a page boundary (multiple of > > 0x1000), but *not* extend as far as the next page boundary. The corruption > > was either C source, or C preprocessor output overwriting the normal contents. > > Right, I have the same problem. The corruption in the .depend > files starts exactly at 0x1000, and continues on for a while, but not for > a full page. > > From what Karl says, John is already aware of the problem. I just > thought I'd confirm your findings... > > > Ken > -- > Kenneth Merry > ken@plutotech.com > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > > Received: from y.physics.usyd.edu.au (y.physics.usyd.edu.au [129.78.129.110]) by goliath.camtech.net.au (8.8.5/8.8.2) with ESMTP id VAA16038 for <thyerm@camtech.net.au>; Tue, 21 Apr 1998 21:20:41 +0930 (CST) > Received: from hub.freebsd.org (hub.FreeBSD.ORG [204.216.27.18]) by y.physics.usyd.edu.au (8.8.5/8.8.2) with ESMTP id VAA17261; Tue, 21 Apr 1998 21:52:41 +1000 (EST) > Received: from localhost (daemon@localhost) > by hub.freebsd.org (8.8.8/8.8.8) with SMTP id EAA23100; > Tue, 21 Apr 1998 04:52:36 -0700 (PDT) > (envelope-from owner-freebsd-current) > Received: by hub.freebsd.org (bulk_mailer v1.6); Tue, 21 Apr 1998 04:46:44 -0700 > Received: (from majordom@localhost) > by hub.freebsd.org (8.8.8/8.8.8) id EAA21918 > for freebsd-current-outgoing; Tue, 21 Apr 1998 04:46:37 -0700 (PDT) > (envelope-from owner-freebsd-current@FreeBSD.ORG) > Received: from conductor.synapse.net (conductor.synapse.net [199.84.54.18]) > by hub.freebsd.org (8.8.8/8.8.8) with SMTP id LAA21895 > for <freebsd-current@FreeBSD.ORG>; Tue, 21 Apr 1998 11:46:25 GMT > (envelope-from evanc@synapse.net) > Received: (qmail 15971 invoked from network); 21 Apr 1998 11:46:24 -0000 > Received: from cpu1970.adsl.bellglobal.com (HELO cello) (206.47.37.201) > by conductor.synapse.net with SMTP; 21 Apr 1998 11:46:24 -0000 > Message-ID: <008401bd6d1b$1c5ddd20$c9252fce@cello.synapse.net> > From: "Evan Champion" <evanc@synapse.net> > To: <freebsd-current@FreeBSD.ORG>, "Stephen McKay" <syssgm@dtir.qld.gov.au> > Cc: <syssgm@dtir.qld.gov.au> > Subject: Re: NFS corruption > Date: Tue, 21 Apr 1998 07:46:23 -0400 > MIME-Version: 1.0 > Content-Transfer-Encoding: 7bit > X-Priority: 3 > X-MSMail-Priority: Normal > X-Mailer: Microsoft Outlook Express 4.72.2106.4 > X-MimeOLE: Produced By Microsoft MimeOLE V4.72.2106.4 > Sender: owner-freebsd-current@FreeBSD.ORG > X-Loop: FreeBSD.ORG > Content-Type: text/plain; > charset="iso-8859-1" > > >I ran 'make -j2 buildworld' and several hours later observed unusual error > >messages complaining about garbage in .depend files. Many .depend files > >were affected. Each .depend file was broken similarly. They would start > >normally, then the corruption would start on a page boundary (multiple of > >0x1000), but *not* extend as far as the next page boundary. The corruption > >was either C source, or C preprocessor output overwriting the normal > contents. > > > I have similar results, on 2.2.6-STABLE. I have also in the past seen the > .depend's full of nulls. > > The only major difference is that my entire .depend is preprocessor output, > and not just a page-worth. > > Mounting with nfsv2 seemed to have fixed that problem, but then I ran in to > dead .nfs* files being left around, which caused grief elsewhere. I haven't > been able to build over NFS since at least March, possibly even January or > February. > > Evan > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > -- --Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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