Hi,

seems ":" is not liked in subject/synopsis, thus those fields ended
up empty. I already corrected it in the gnats-db.

Synopsis:  hung nfs mounts with 1.5.1_ALPHA, i386 server, hp300 client

Sorry,
     Thorsten

> 
> >Number:         12324
> >Category:       kern
> >Synopsis:       
> >Confidential:   no
> >Severity:       critical
> >Priority:       high
> >Responsible:    kern-bug-people
> >State:          open
> >Class:          sw-bug
> >Submitter-Id:   net
> >Arrival-Date:   Sat Mar 03 12:07:00 PST 2001
> >Closed-Date:
> >Last-Modified:
> >Originator:     Thorsten Frueauf
> >Release:        <NetBSD-current source date> 1.5.1_ALPHA from 03.03.2001
> >Organization:
> private
> 	
> >Environment:
> 	
> nfs server:
> 		NetBSD/i386 kernel and userland: 1.5.1_ALPHA from 13.01.2001
> 		Toshiba Tecra 500CDT (named cyberlap)
> 
> nfs client:
> 		NetBSD/hp300 kernel: 1.5.1_ALPHA from 03.03.2001
> 		             userland: 1.5.1.ALPHA from 03.12.2000
> 		HP 9000/400T (named cybersil)
> 
> >Description:
> 	
> My laptop (named cyberlap) exports several filesystems via nfs:
> 
> [frueauf@cyberlap]/root# showmount -e
> Exports list on localhost:
> /usr                               cyberdyne cybersil cyberdec-1
> cyberdec-2 cyberdec-3 cyberdec-4 sunlap sparc1 
> /space2                            cyberlap cyberdyne cybersil cyberdec-1
> cyberdec-2 cyberdec-3 cyberdec-4 sunlap sparc1 
> /space1                            cyberlap cyberdyne cybersil cyberdec-1
> cyberdec-2 cyberdec-3 cyberdec-4 sunlap sparc1 
> 
> Particulary /space1/src holds src for NetBSD 1.5.1_ALPHA checked out via
> anoncvs
> >from 03.03.2001.
> 
> I have several other NetBSD machines which mount that filesystem to build
> their OS.
> 
> I build a new kernel on my HP 9000/400T, bootet from it and tried to build
> userland. But the nfs mount hangs very soon while doing "make includes".
> 
> At the same time my Sun Sparcstation 5 does the same mount from
> cyberlap, building userland, but no hangs at all.
> 
> I can still do a succesfull "showmount -e cyberlab" on the hp300 system.
> I can even mount the same filesystem to a different mountpoint. But
> reading a file from the new mountpoint hangs imediatly while a previous
> "ls -la" worked.
> 
> In /var/log/messages I see "nfs server not responding" on the hp300.
> When I try to ^C the build, after ~ 20 minutes it gets a
> "nfs server alive again" and the ^C gets through. I can then umount and
> remount the FS. But it hangs as soon I try to read a file.
> 
> On the nfs server I saw the following in /var/log/messages:
> Mar  3 19:44:44 cyberlap /netbsd: nfsd send error 55
> Mar  3 19:46:33 cyberlap /netbsd: nfsd send error 55
> 
> Doing a tcpdump on the server I see the following sequence coming once in
> a row of several minutes:
> 
> 20:12:56.363125 cybersil.312929716 > cyberlap.nfs: 132 read [|nfs] (ttl
> 64, id 8
> 822)
> 20:12:56.365557 cyberlap.nfs > cybersil.312929716: reply ok 1472 read REG
> 644 id
> s 4105/9 [|nfs] (frag 60028:1480@0+) (ttl 64)
> 20:12:56.366474 cyberlap > cybersil: (frag 60028:1480@1480+) (ttl 64)
> 20:12:56.367358 cyberlap > cybersil: (frag 60028:1480@2960+) (ttl 64)
> 20:12:56.368314 cyberlap > cybersil: (frag 60028:1480@4440+) (ttl 64)
> 20:12:56.369553 cyberlap > cybersil: (frag 60028:1480@5920+) (ttl 64)
> 20:12:56.370771 cyberlap > cybersil: (frag 60028:1480@7400+) (ttl 64)
> 20:12:56.371998 cyberlap > cybersil: (frag 60028:1480@8880+) (ttl 64)
> 20:12:56.373229 cyberlap > cybersil: (frag 60028:1480@10360+) (ttl 64)
> 20:12:56.374459 cyberlap > cybersil: (frag 60028:1480@11840+) (ttl 64)
> 20:12:56.375691 cyberlap > cybersil: (frag 60028:1480@13320+) (ttl 64)
> 20:12:56.376920 cyberlap > cybersil: (frag 60028:1480@14800+) (ttl 64)
> 20:12:56.378151 cyberlap > cybersil: (frag 60028:1480@16280+) (ttl 64)
> 20:12:56.379384 cyberlap > cybersil: (frag 60028:1480@17760+) (ttl 64)
> 20:12:56.380620 cyberlap > cybersil: (frag 60028:1480@19240+) (ttl 64)
> 20:12:56.381847 cyberlap > cybersil: (frag 60028:1480@20720+) (ttl 64)
> 20:12:56.383075 cyberlap > cybersil: (frag 60028:1480@22200+) (ttl 64)
> 20:12:56.384306 cyberlap > cybersil: (frag 60028:1480@23680+) (ttl 64)
> 20:12:56.385537 cyberlap > cybersil: (frag 60028:1480@25160+) (ttl 64)
> 20:12:56.386769 cyberlap > cybersil: (frag 60028:1480@26640+) (ttl 64)
> 20:12:56.388000 cyberlap > cybersil: (frag 60028:1480@28120+) (ttl 64)
> 20:12:56.389230 cyberlap > cybersil: (frag 60028:1480@29600+) (ttl 64)
> 20:12:56.390467 cyberlap > cybersil: (frag 60028:1480@31080+) (ttl 64)
> 20:12:56.391693 cyberlap > cybersil: (frag 60028:344@32560) (ttl 64)
> 
> 
> If I boot the hp300 with a kernel build from 1.5.1_ALPHA sources checked
> out
> at 03.12.2000 I don't see that problem, e.g. "make includes" goes through.
> 
> 
> >How-To-Repeat:
> 	
> Export /src from an i386 system, mount it on a hp300 system. Doing this
> with kernels build with 1.5.1_ALPHA as of 03.03.2001 will show the above
> problem.
> 
> Mounting it from sparc does not show the problem.
> >Fix:
> 	
> I have not the slightest idea :-(
> >Release-Note:
> >Audit-Trail:
> >Unformatted:
>  nfs problems: hung nfs mounts with 1.5.1_ALPHA, i386 server, hp300 client
> 

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