bin/41259: amd(8) cannot handle high demand

[tron%zhadum.org.uk@localhost]

>Number:         41259
>Category:       bin
>Synopsis:       amd(8) cannot handle high demand
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Apr 21 13:15:00 +0000 2009
>Originator:     tron%zhadum.org.uk@localhost
>Release:        NetBSD 5.0_RC4 2009-04-18 sources
>Organization:
Matthias Scheler                                  http://zhadum.org.uk/
>Environment:
System: NetBSD lyssa.zhadum.org.uk 5.0_RC4 NetBSD 5.0_RC4 (GENERIC) #0: Sat Apr 
18 10:53:55 BST 2009 
tron%excalibur.zhadum.org.uk@localhost:/Volumes/Sources/obj/sys/arch/i386/compile/GENERIC
 i386
Architecture: i386
Machine: i386
>Description:
I tried to build NetBSD sources from the "netbsd-5" branch on an
NFS volume that was mounted via amd(8) today. The machine has four
virtual CPUs and I started "build.sh" with "-j 8". The build failed
several times with random "device busy" or "file not found" messages.

I mounted the source statically with "mount -t nfs ..." afterwards,
retried the build and it finished without problems.

Here is my "/etc/amd.conf" in case it matters:

[global]
auto_attrcache  = 1
search_path     = /etc/amd
unmount_on_exit = yes

[ /home ]
map_name =      amd.home
map_type =      nis

[ /share ]
map_name =      amd.share
map_type =      nis

[ /scratch ]
map_name =      amd.scratch
map_type =      nis

[ /volumes ]
map_name =      volumes
map_type =      file

I've only added "auto_attrcache" and "unmount_on_exit" today to fix
the build problem. But it didnt' help.

>How-To-Repeat:
cd /auto/mounted/path/src
./build.sh -j 8 ...

>Fix:
None provide.