Date: Mon, 12 Jul 1999 10:11:32 -0700 (PDT) From: conrad@th.physik.uni-bonn.de To: freebsd-gnats-submit@freebsd.org Subject: kern/12609: At boottime NFS mounts on a 3.2 client from a 2.2.7 server fails, when in turn the server has NFS mounted filesystems on the client Message-ID: <19990712171132.BDE74150A7@hub.freebsd.org>
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>Number: 12609 >Category: kern >Synopsis: At boottime NFS mounts on a 3.2 client from a 2.2.7 server fails, when in turn the server has NFS mounted filesystems on the client >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Mon Jul 12 10:20:00 PDT 1999 >Closed-Date: >Last-Modified: >Originator: Jan Conrad >Release: 3.2-STABLE, 2.2.7-RELEASE, also occured with 'MATT's nfs patches installed >Organization: Univ. of Bonn >Environment: client: FreeBSD merlin.th.physik.uni-bonn.de 3.2-STABLE FreeBSD 3.2-STABLE #4: Mon Jul 12 11:46:44 CEST 1999 conrad@merlin.th.physik.uni-bonn.de:/nilles/freebsd/src/sys/compile/MERLIN i386 server: FreeBSD dirac.th.physik.uni-bonn.de 2.2.7-RELEASE FreeBSD 2.2.7-RELEASE #0: Sun Oct 25 16:58:29 CET 1998 conrad@merlin.physik.uni-bonn.de:/nilles/freebsd/src/sys/compile/MACH i386 >Description: Consider the following setup: merlin's fstab: pauli:/nilles/backup /nilles/backup nfs rw,bg,soft,nosuid,nodev 0 0 dirac:/nilles/share /nilles/share nfs rw,bg,soft,nodev 0 0 dirac:/nilles/home /nilles/home nfs rw,bg,soft,nosuid,nodev 0 0 dirac:/usr/www/httpd/root /nilles/www nfs rw,bg,soft,nosuid,nodev 0 0 dirac's fstab: /nilles/freebsd@merlin /nilles/freebsd nfs rw,bg,soft,nodev 0 0 (pauli runs 2.2.7 as well....) When dirac does NOT mount /nilles/freebsd@merlin, merlin reboots gracefully, but when one mounts /nilles/freebsd@merlin on dirac (even without accessing it...) the mounts of /nilles/share etc. on merlin is backgrounded at boottime. the following message appears (for the first two mountpoints ..@dirac): nfs: bad MNT RPC: RPC: timed out (the message is generated by mount_nfs!) But the mount of /nilles/backup@pauli succeeds before the mounts ..@dirac are attempted. Output from 'tcpdump -s 200 -vv host merlin': (the first packet stems from (presumably dirac's) xntpd) <BOOT, /nilles/freebsd@merlin mounted on dirac> 17:05:06.194400 dirac.th.physik.uni-bonn.de.ntp > merlin.th.physik.uni-bonn.de.ntp: v3 sym_act strat 2 poll 6 prec -16 dist 0.016845 disp 0.003265 ref sunmanager.lrz-muenchen.de@3140780589.210189819 orig 3140780614.147031784 rec +0.001723289 xmt +92.047328948 (ttl 64, id 53479) 17:05:35.047701 arp who-has merlin.th.physik.uni-bonn.de tell merlin.th.physik.uni-bonn.de 17:05:35.331584 arp who-has pauli.th.physik.uni-bonn.de tell merlin.th.physik.uni-bonn.de 17:05:35.336906 arp who-has dirac.th.physik.uni-bonn.de tell merlin.th.physik.uni-bonn.de 17:05:35.336921 arp reply dirac.th.physik.uni-bonn.de is-at 0:90:27:1c:b1:c3 17:05:35.337018 merlin.th.physik.uni-bonn.de.1017 > dirac.th.physik.uni-bonn.de.sunrpc: udp 56 (ttl 64, id 8) 17:05:35.337119 dirac.th.physik.uni-bonn.de.sunrpc > merlin.th.physik.uni-bonn.de.1017: udp 28 (ttl 64, id 54383) 17:05:35.337336 merlin.th.physik.uni-bonn.de.1016 > dirac.th.physik.uni-bonn.de.sunrpc: udp 56 (ttl 64, id 9) 17:05:35.337397 dirac.th.physik.uni-bonn.de.sunrpc > merlin.th.physik.uni-bonn.de.1016: udp 28 (ttl 64, id 54384) 17:05:35.337637 merlin.th.physik.uni-bonn.de.408c9418 > dirac.th.physik.uni-bonn.de.nfs: 40 null (ttl 64, id 10) 17:05:35.337692 dirac.th.physik.uni-bonn.de.nfs > merlin.th.physik.uni-bonn.de.408c9418: reply ok 24 null (ttl 64, id 54385) 17:05:35.337894 merlin.th.physik.uni-bonn.de.1014 > dirac.th.physik.uni-bonn.de.sunrpc: udp 56 (ttl 64, id 11) 17:05:35.337959 dirac.th.physik.uni-bonn.de.sunrpc > merlin.th.physik.uni-bonn.de.1014: udp 28 (ttl 64, id 54386) 17:05:35.338219 merlin.th.physik.uni-bonn.de.1013 > dirac.th.physik.uni-bonn.de.983: udp 112 (ttl 64, id 12) 17:05:35.338527 dirac.th.physik.uni-bonn.de.4cac80a7 > merlin.th.physik.uni-bonn.de.nfs: 92 getattr fh 0,131079/2 (ttl 64, id 54387) 17:05:35.338664 merlin.th.physik.uni-bonn.de > dirac.th.physik.uni-bonn.de: icmp: merlin.th.physik.uni-bonn.de udp port nfsd unreach able (ttl 255, id 13) 17:05:36.724607 dirac.th.physik.uni-bonn.de.4cac80a7 > merlin.th.physik.uni-bonn.de.nfs: 92 getattr fh 0,131079/2 (ttl 64, id 54399) 17:05:36.724715 merlin.th.physik.uni-bonn.de > dirac.th.physik.uni-bonn.de: icmp: merlin.th.physik.uni-bonn.de udp port nfsd unreach able (ttl 255, id 14) 17:05:39.494636 dirac.th.physik.uni-bonn.de.4cac80a7 > merlin.th.physik.uni-bonn.de.nfs: 92 getattr fh 0,131079/2 (ttl 64, id 54424) 17:05:39.494743 merlin.th.physik.uni-bonn.de > dirac.th.physik.uni-bonn.de: icmp: merlin.th.physik.uni-bonn.de udp port nfsd unreach able (ttl 255, id 15) 17:05:45.024673 dirac.th.physik.uni-bonn.de.4cac80a7 > merlin.th.physik.uni-bonn.de.nfs: 92 getattr fh 0,131079/2 (ttl 64, id 54473) 17:05:45.024782 merlin.th.physik.uni-bonn.de > dirac.th.physik.uni-bonn.de: icmp: merlin.th.physik.uni-bonn.de udp port nfsd unreach able (ttl 255, id 16) <AND ONCE AGAIN> <BOOT, /nilles/freebsd@merlin NOT mounted on dirac> 17:08:18.196237 dirac.th.physik.uni-bonn.de.ntp > merlin.th.physik.uni-bonn.de.ntp: v3 sym_act strat 2 poll 6 prec -16 dist 0.015213 di sp 0.002761 ref unios.rz.Uni-Osnabrueck.DE@3140780890.215399742 orig 3140780800.776019096 rec +0.328375816 xmt +97.420174598 (ttl 64, i d 58653) 17:08:39.028644 arp who-has merlin.th.physik.uni-bonn.de tell merlin.th.physik.uni-bonn.de 17:08:39.312554 arp who-has pauli.th.physik.uni-bonn.de tell merlin.th.physik.uni-bonn.de 17:08:39.317972 arp who-has dirac.th.physik.uni-bonn.de tell merlin.th.physik.uni-bonn.de 17:08:39.317988 arp reply dirac.th.physik.uni-bonn.de is-at 0:90:27:1c:b1:c3 17:08:39.318086 merlin.th.physik.uni-bonn.de.1017 > dirac.th.physik.uni-bonn.de.sunrpc: udp 56 (ttl 64, id 8) 17:08:39.318175 dirac.th.physik.uni-bonn.de.sunrpc > merlin.th.physik.uni-bonn.de.1017: udp 28 (ttl 64, id 59013) 17:08:39.318391 merlin.th.physik.uni-bonn.de.1016 > dirac.th.physik.uni-bonn.de.sunrpc: udp 56 (ttl 64, id 9) 17:08:39.318451 dirac.th.physik.uni-bonn.de.sunrpc > merlin.th.physik.uni-bonn.de.1016: udp 28 (ttl 64, id 59014) 17:08:39.318690 merlin.th.physik.uni-bonn.de.408c0aaf > dirac.th.physik.uni-bonn.de.nfs: 40 null (ttl 64, id 10) 17:08:39.318744 dirac.th.physik.uni-bonn.de.nfs > merlin.th.physik.uni-bonn.de.408c0aaf: reply ok 24 null (ttl 64, id 59015) 17:08:39.318946 merlin.th.physik.uni-bonn.de.1014 > dirac.th.physik.uni-bonn.de.sunrpc: udp 56 (ttl 64, id 11) 17:08:39.319010 dirac.th.physik.uni-bonn.de.sunrpc > merlin.th.physik.uni-bonn.de.1014: udp 28 (ttl 64, id 59016) 17:08:39.319272 merlin.th.physik.uni-bonn.de.1013 > dirac.th.physik.uni-bonn.de.983: udp 112 (ttl 64, id 12) 17:08:39.319747 dirac.th.physik.uni-bonn.de.983 > merlin.th.physik.uni-bonn.de.1013: udp 68 (ttl 64, id 59017) 17:08:39.320193 merlin.th.physik.uni-bonn.de.126e77e4 > dirac.th.physik.uni-bonn.de.nfs: 92 getattr fh 0,263172/2 (ttl 64, id 13) 17:08:39.320276 dirac.th.physik.uni-bonn.de.nfs > merlin.th.physik.uni-bonn.de.126e77e4: reply ok 112 getattr DIR 755 ids 151/43 sz 512 (ttl 64, id 59020) 17:08:39.320665 merlin.th.physik.uni-bonn.de.126e77e5 > dirac.th.physik.uni-bonn.de.nfs: 92 fsinfo [|nfs] (ttl 64, id 14) 17:08:39.320731 dirac.th.physik.uni-bonn.de.nfs > merlin.th.physik.uni-bonn.de.126e77e5: reply ok 164 fsinfo POST: DIR 755 ids 151/43 s z 512 nlink 11 rdev 3/232 fsid 3000000e8 nodeid e800000000 a/m/ctime 931737610.000000 913809812.000000 913809812.000000 [|nfs] (ttl 64 , id 59021) 17:08:39.320934 merlin.th.physik.uni-bonn.de.126e77e6 > dirac.th.physik.uni-bonn.de.nfs: 92 fsstat fh 0,263172/2 (ttl 64, id 15) 17:08:39.321004 dirac.th.physik.uni-bonn.de.nfs > merlin.th.physik.uni-bonn.de.126e77e6: reply ok 168 fsstat POST: DIR 755 ids 151/43 s z 512 nlink 11 rdev 3/232 fsid 3000000e8 nodeid e800000000 a/m/ctime 931737610.000000 913809812.000000 913809812.000000 [|nfs] (ttl 64 , id 59022) <AND SO ON> When dirac was a DEC UNIX box over one year ago (the clients were all FreeBSD), the problem did never occur... However, once it occured when mounting a filesystem from a very heavily loaded DEC UNIX box... So maybe its a problem on the FreeBSD client side... >How-To-Repeat: Difficult: I tried it with other 2.2.7 machines as server but didn't succeed (but I have only one server loaded like dirac..). But one time (!) it happend when mounting a filesystem from a DEC UNIX 4.0c box.... >Fix: Putting mount -a -t nfs in /etc/rc after network_pass_3 doesn't help. Maybe inserting a sleep would Real solution: unknown (to me...) >Release-Note: >Audit-Trail: >Unformatted: To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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