2.4.18pre3-ac2 : stuck when mounting NFS v3 via automounter

2.4.18pre3-ac2 : stuck when mounting NFS v3 via automounter

[Stefan Frank]

Hi,

quite regularly my server (2.4.18-pre3-ac2 SMP) locks up hard.
No response over the net, keyboard is dead, except the SysReq.
And nothing appears in the logs.

I think it _may_ be related to NFS, as it happened now a few times when
i started mutt on another machine (My mail is stored on the server
and is automounted (NFS v3) on the client (also running 2.4.18-pre3-ac2 UP)

In addition, every now and then messages like below are logged:

Jan 23 13:06:47 asterix kernel: NFS: server cheating in read reply: 
       count 270336 > recvd 8680

Jan 12 22:36:47 asterix kernel: call_verify: server accept status: 2

Jan 13 12:43:49 asterix kernel: expected (0x808/0x1c0b6), got 
       (0x4000000040808/0x400000001c0b6)

Anyone can tell me what they mean?

The last changes to NFS are in 2.4.18-pre1, according to Marcelo's 
Changelog. Is there anyting i could try (different kernels, patches)?

Please note that this happens since around 2.4.something, i just
always hoped that it would be fixed with the next release.

Bye, Stefan

obelix:/home/sfr# ver_linux 
If some fields are empty or look unusual you may have an old version.
Compare to the current minimal requirements in Documentation/Changes.
 
Linux obelix 2.4.18-pre3-ac2 #1 SMP Mit Jan 16 00:16:23 CET 2002 i686
unknown
 
/usr/local/bin/ver_linux: gcc: command not found

Kernel compiled on another machine:
Reading specs from /usr/lib/gcc-lib/i386-linux/2.95.4/specs
gcc version 2.95.4  (Debian prerelease)

Gnu C                 
Gnu make               3.79.1
util-linux             2.11n
mount                  2.11n
modutils               2.4.12
e2fsprogs              1.25
pcmcia-cs              3.1.28
PPP                    2.4.1
Linux C Library        2.2.4
Dynamic linker (ldd)   2.2.4
Procps                 2.0.7
Net-tools              1.60
Console-tools          0.2.3
Sh-utils               2.0.11
Modules Loaded         ide-probe-mod ide-mod ipt_TOS iptable_mangle
ipt_REDIRECT ipt_MASQUERADE iptable_nat ipt_state ip_conntrack ipt_LOG
ipt_limit iptable_filter ip_tables ospm_processor ospm_button
ospm_system ospm_busmgr rtc


Here are the compile options from mutt:

sfr@asterix:~$ mutt -v
Mutt 1.3.25i (2002-01-01)
Copyright (C) 1996-2001 Michael R. Elkins und andere.
Mutt bernimmt KEINERLEI GEWHRLEISTUNG. Starten Sie `mutt -vv', um
weitere Details darber zu erfahren. Mutt ist freie Software. 
Sie knnen es unter bestimmten Bedingungen weitergeben; starten Sie
`mutt -vv' fr weitere Details.

System: Linux 2.4.18-pre3-ac2 (i686) [using ncurses 5.2]
Einstellungen bei der Compilierung:
-DOMAIN
+DEBUG
-HOMESPOOL  +USE_SETGID  +USE_DOTLOCK  +DL_STANDALONE  
+USE_FCNTL  -USE_FLOCK
+USE_POP  +USE_IMAP  -USE_GSS  -USE_SSL  +USE_GNUTLS  +USE_SASL  
+HAVE_REGCOMP  -USE_GNU_REGEX  
+HAVE_COLOR  +HAVE_START_COLOR  +HAVE_TYPEAHEAD  +HAVE_BKGDSET  
+HAVE_CURS_SET  +HAVE_META  +HAVE_RESIZETERM  
+HAVE_PGP  -BUFFY_SIZE -EXACT_ADDRESS  -SUN_ATTACHMENT  
+ENABLE_NLS  -LOCALES_HACK  +COMPRESSED  +HAVE_WC_FUNCS
+HAVE_LANGINFO_CODESET  +HAVE_LANGINFO_YESEXPR  
+HAVE_ICONV  -ICONV_NONTRANS  +HAVE_GETSID  +HAVE_GETADDRINFO  
ISPELL="/usr/bin/ispell"
SENDMAIL="/usr/sbin/sendmail"
MAILPATH="/var/mail"
PKGDATADIR="/usr/share/mutt"
SYSCONFDIR="/etc"
EXECSHELL="/bin/sh"
MIXMASTER="mixmaster"
Um die Entwickler zu kontaktieren, schicken Sie bitte
eine Nachricht (in englisch) an <mutt-dev@mutt.org>.
Um einen Bug zu melden, verwenden Sie bitte das Programm flea(1).

patch-1.3.24.rr.compressed.1
patch-1.3.24.appoct.2
patch-1.3.15.sw.pgp-outlook.1
patch-1.3.25.chip.fast-limited-threads
patch-1.3.25.admcd.gnutls.14
Md.use_editor
Md.paths_mutt.man
Md.muttbug_no_list
Md.use_etc_mailname
Md.muttbug_warning
Md.gpg_status_fd
patch-1.3.25.cd.edit_threads.9.1
patch-1.2.xtitles.1
patch-1.3.23.1.ametzler.pgp_good_sign
sfr@asterix:~$ 

Re: 2.4.18pre3-ac2 : stuck when mounting NFS v3 via automounter

[Trond Myklebust]

>>>>> " " == Stefan Frank <sfr@gmx.net> writes:

     > Jan 23 13:06:47 asterix kernel: NFS: server cheating in read
     > reply:
     >        count 270336 > recvd 8680

     > Jan 12 22:36:47 asterix kernel: call_verify: server accept
     > status: 2

     > Jan 13 12:43:49 asterix kernel: expected (0x808/0x1c0b6), got
     >        (0x4000000040808/0x400000001c0b6)

     > Anyone can tell me what they mean?

Those are all reports of server bugs.

The first says that you are receiving read packets that are reported
to be longer than they actually are. This is harmless, since the RPC
layer automatically truncates any packets that threaten to overflow
our buffers.

The second is a report from the RPC layer. The server is saying that
you are trying to use an RPC service that it doesn't support.

The third states that your server is returning seriously screwed up
file attributes: even the fileid (a.k.a. inode number) is changed.

None of the above errors can cause a client to hang, however I suggest
that you try upgrading/patching your server.

Cheers,
   Trond