On Sun, Jan 22, 2006 at 12:28:16PM +0000, Tim Cutts wrote:
>>Jan 21 16:26:58 bach kernel: amd[2840]: segfault at
>>0000000000000000 rip 00002aaaab1a3890 rsp 00007fffffe93c08 error 4
>>
>>The not responding/OK messages occur once or twice an hour.
>>Currently,
>>the other machines in our small cluster are not being used, so all of
>>the NFS traffic is local to this machine.
>
>Can you actually reproduce this on demand, or does it just
>occasionally fall over? Could add your automount map files to the
>bug report, so that I (and the am-utils developers) can see exactly
>what the configuration is?
Unfortunately, I can't reproduce this on demand. At least, I haven't
discovered if there is some specific thing that a user can do to trigger it.
It seems to happen more or less at random. As I mentioned above, the not
responding/OK messages occur once or twice and hour. The segfaulting seems to
occur about once every 1-2 days.
Before this machine's hardware was upgraded (it used to be x86) and Debian
reinstalled, the not responding/OK messages occured, but with less
regularity. amd did not segfault, however, and NFS seemed okay, so I just
ignored the messages.
>I've seen some reports similar to this on the am-utils mailing list,
>so I'll forward your bug report to them and see what they think. But
>in the mean time, the full details of your configuration would be
>useful, i.e. your amd.conf file, your /etc/default/am-utils file and
>any map files referred to by the amd.conf file.
>
>Thanks,
>Tim
Can do. I've attached my amd.conf and /etc/default/am-utils files as
well as the amd.home map.
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# Sample amd.conf for Debian GNU/Linux
# $Id: amd.conf,v 1.5 2002/03/20 19:16:29 phil Exp $
# For the commented options, the default is shown
[global]
### Global parameters
# Override the achitecture ?
#arch = i386
# Where to mount the filesystems
auto_dir = /amd
# Override the default 300 seconds (5 minutes) cache timeout
#cache_duration = 300
# Set a cluster string ?
#cluster = lab
# Debug ?
#debug_options = all
# Override the default 120 seconds (2 minutes) umount interval
#dismount_interval = 120
# Override the full OS string
#full_os = linux-2.2.18
# Do we want to reference hosts via their FQDN ?
#fully_qualified_hosts = no
# What's the hesiod base name ?
#hesiod_base = automount
# Kernel architecture override
#karch = i386
# LDAP parameters
#ldap_base =
#ldap_cache_maxmem = 131072
#ldap_cache_seconds = 0
#ldap_hostPorts =
# Override the DNS domainname (defaults to the part after the first
# dot of the machine fully qualified domain name (FQDN)
#local_domain = yourdomain.org
# Where to log to...
log_file = syslog
# What to log ?
log_options = all,noinfo,nostats,nomap
# What IP protocol to use when doing NFS ? (tcp or udp)
# If specified here, *all* mounts will use udp, regardless of the map contents
# nfs_proto = udp
# How many retransmissions will the kernel attempt when communicating
# with amd ?
#nfs_restransmit_counter = 11
# Timeout in tenths of second between retransmissions when the kernel
# communicates with amd ?
#nfs_retry_interval = 8
# NFS version to use ? (2 or 3)
# If specified here, *all* mounts will use it, regardless of the map contents
nfs_vers = 3
# NIS domain name to retrieve map from (defaults to the locally bound
# domain)
#nis_domain = your-nis-domain
# Do we want to normalize host names when expanding ${rhost}
#normalize_hostnames = no
# Override the os string ?
#os = linux
# Override the os version ?
#osver = 2.2.18
# Where to print the PID if print_pid is set
#pid_file = /dev/stdout
# Try to lock amd into memory with plock() ?
#plock = yes
# What portmapper program number do we register for communications between
# amd and the various utilities ?
#portmap_program = 300019
# Print our pid on startup ? (not needed, we use amq for that)
#print_pid = no
# Print amd version on startup ?
#print_version = no
# At startup, do we "restart" existing mounts if we determine they could
# have been automounted ?
restart_mounts = yes
# Do we want to be able to use selectors on the /defaults map entry ?
selectors_in_defaults = yes
# Do we return the number of automount entries on statfs()/df ?
#show_statfs_entries = no
# Do we attempt to unmount all automounted file systems on exit ?
unmount_on_exit = yes
# Override vendor ?
vendor = Debian
### Default parameters, can be overriden on a map-by-map basis
# Do we show unmounted automount points on readdir()
#browsable_dirs = yes
# Default map options
#map_options =
# Map type ? Which kinds of map to look for (can be: file, hesiod, ldap,
# ndbm, nis, nisplus, passwd, union), defaults to all of these.
#map_type =
# Default Mount type ?
#mount_type = nfs
# Path to search maps into (for files or ndbm maps) ?
#search_path =
### Sample map
#[/home]
# map_name = /etc/am-utils/amd.home
# Am-utils configuration generated automatically by am-utils.config $Revision:
1.17 $
#
# Changes to this file outside of legal values or adding new fields
# and variables to this file might make automatic am-utils
# configuration (via dpkg-reconfigure/debconf) impossible.
#
# The preferred way of changing this file is via "dpkg-reconfigure am-utils"
# (debconf).
#
# However, if these values are changed manually, debconf will ask you:
# 1. If you want to import these changes back (only possible if you changed
# variables to other legal values, additional variables you might have
# created will be discarded).
# 2. If you want to discard you manual changes and use whatever was used
# last time you used debconf.
# 3. If you want debconf to keep your local changes. In this case, debconf
# will not touch this file.
#
# Question: Are maps propagated via NIS ?
# Legal value: true/false
# Used when: always
AM_UTILS_USE_NIS='false'
# Question: Name of the master NIS map
# Legal value: any string
# Used when: AM_UTILS_USE_NIS is true
AM_UTILS_NIS_MASTER_MAP='amd.master'
# Question: What's the master map style
# Legal value: config - each key is a configuration name and the command line
# is extracted with:
# ypmatch $AM_UTILS_NIS_KEY $AM_UTILS_NIS_MASTER_MAP
# onekey - same as `config', but there's only one configuration,
# the key is irrelevant and the command line is extracted
# with:
# ypcat $AM_UTILS_NIS_MASTER_MAP
# mountpoint - the master map's keys are the mount points and the
# values are the mount point map and options. The
# command line us extracted with:
# ypcat -k $AM_UTILS_NIS_MASTER_MAP
# custom - the command to run to extract the master map is
# specified in $AM_UTILS_NIS_CUSTOM.
# Used when: AM_UTILS_USE_NIS is true
AM_UTILS_NIS_MASTER_MAP_KEY_STYLE='onekey'
# Question: Name of the key to use for NIS map
# Legal value: any string
# Used when: AM_UTILS_USE_NIS is true *and* AM_UTILS_NIS_MASTER_MAP_KEY_STYLE
# is `config'
AM_UTILS_NIS_KEY='default'
# Question: What command should be run to extract the master map ?
# Legal value: any valid shell command
# Used when: AM_UTILS_USE_NIS is true *and* AM_UTILS_NIS_MASTER_MAP_KEY_STYLE
# is `custom'
# Note: Please leave the single quotes here, the startup script will
# call eval.
AM_UTILS_NIS_CUSTOM='echo "/amd-is-misconfigured /usr/share/am-utils/amd.net"'
# Question: Use the /net map
# Legal value: true/false
# Used when: AM_UTILS_USE_NIS is false
AM_UTILS_MAP_NET='true'
# Question: Use the /home passwd map
# Legal value: true/false
# Used when: AM_UTILS_USE_NIS is false
AM_UTILS_MAP_HOME='false'
# Question: Other maps
# Legal value: string containing extra parameters (maps) to be passed to amd
# Used when: AM_UTILS_USE_NIS is false
AM_UTILS_MAP_OTHERS=''
# Explanation:
# These parameters are sourced by /etc/init.d/am-utils to build amd's
# command line.
# Refer to this script to see how these parameters are being used.
#
# Once again, the recommended way of changing these is via deconf
# ("dpkg-reconfigure am-utils")
anupama type:=link;fs:=/net/bach/home/anupama
baranec type:=link;fs:=/net/bach/home/baranec
basty type:=link;fs:=/net/bach/home/basty
charliec type:=link;fs:=/net/bach/home/charliec
cindy type:=link;fs:=/net/bach/home/cindy
dione type:=link;fs:=/net/bach/home/dione
dpotter type:=link;fs:=/net/bach/home/dpotter
eatchel type:=link;fs:=/net/bach/home/eatchel
freed type:=link;fs:=/net/bach/home/freed
ftp type:=link;fs:=/net/bach/home/ftp
gautham type:=link;fs:=/net/bach/home/gautham
hege type:=link;fs:=/net/bach/home/hege
jenner type:=link;fs:=/net/bach/home/jenner
jessica type:=link;fs:=/net/bach/home/jessica
jfscholl type:=link;fs:=/net/bach/home/jfscholl
johng type:=link;fs:=/net/bach/home/johng
matlab type:=link;fs:=/net/bach/home/matlab
mhart type:=link;fs:=/net/bach/home/mhart
mhsu type:=link;fs:=/net/bach/home/mhsu
mugdha type:=link;fs:=/net/bach/home/mugdha
nmilton type:=link;fs:=/net/bach/home/nmilton
oldfossil type:=link;fs:=/net/bach/home/oldfossil
sathya type:=link;fs:=/net/bach/home/sathya
stuartj type:=link;fs:=/net/bach/home/stuartj
vidhya type:=link;fs:=/net/bach/home/vidhya
wjohnson type:=link;fs:=/net/bach/home/wjohnson
