I'm installing amanda to test in my environment. I have one critical filesystem
(on linux) that is larger than any holding area I can create from the remaining
RAID5 space. When I execute 'amdump daily' the report says it cannot switch to
incremental. I interpret this to mean that amanda is not able to stream the
file system directly to tape? How can I fix this?
Mike
Fedora Core 5 with all the latest patches.
[mikee@elo daily]$ rpm -qa | grep amanda
amanda-backup_server-2.5.1p2-1.fc5
amanda-backup_client-2.5.1p2-1.fc5
[mikee@elo daily]$
----------------- /etc/amanda/daily/amanda.conf
# mikee 061228 - installation
# amanda.conf - sample Amanda configuration file. See amanda.conf(5) for
# details
org "Daily" # your organization name for reports
# Amanda needs a few Mb of diskspace for the log and debug files,
# as well as a database. This stuff can grow large, so the conf directory
# isn't usually appropriate. Some sites use /usr/local/var and some /usr/adm.
# Create an amanda directory under there. You need a separate infofile and
# logdir for each configuration, so create subdirectories for each conf and
# put the files there. Specify the locations below.
# Note that, although the keyword below is infofile, it is only so for
# historic reasons, since now it is supposed to be a directory (unless
# you have selected some database format other than the `text' default)
infofile "/etc/amanda/daily/curinfo" # database DIRECTORY
logdir "/etc/amanda/daily" # log directory
indexdir "/etc/amanda/daily/index" # index directory
tapelist "/etc/amanda/daily/tapelist" # list of used tapes
# tapelist is stored, by default, in the directory that contains amanda.conf
includefile "/etc/amanda/amanda.conf.main"
----------------- /etc/amanda/daily/amanda.conf
----------------- /etc/amanda/amanda.conf.main
# mikee 061228 - installation
# amanda.conf.main - main configuration file, all other configs include this
file
mailto "admin AT pointwise DOT com" # space separated list of operators at
your site
dumpuser "amandabackup" # the user to run dumps under
inparallel 4 # maximum dumpers that will run in parallel (max 63)
# this maximum can be increased at compile-time,
# modifying MAX_DUMPERS in server-src/driverio.h
dumporder "sssS" # specify the priority order of each dumper
# s -> smallest size
# S -> biggest size
# t -> smallest time
# T -> biggest time
# b -> smallest bandwitdh
# B -> biggest bandwitdh
# try "BTBTBTBTBTBT" if you are not holding
# disk constrained
taperalgo first # The algorithm used to choose which dump image to send
# to the taper.
# Possible values:
# [first|firstfit|largest|largestfit|smallest|last]
# Default: first.
# first First in - first out.
# firstfit The first dump image that will fit
# on the current tape.
# largest The largest dump image.
# largestfit The largest dump image that will fit
# on the current tape.
# smallest The smallest dump image.
# last Last in - first out.
displayunit "k" # Possible values: "k|m|g|t"
# Default: k.
# The unit used to print many numbers.
# k=kilo, m=mega, g=giga, t=tera
netusage 600 Kbps # maximum net bandwidth for Amanda, in KB per sec
dumpcycle 3 weeks # the number of days in the normal dump cycle
runspercycle 15 # the number of amdump runs in dumpcycle days
# (3 weeks * 5 amdump runs per week -- just weekdays)
tapecycle 20 tapes # the number of tapes in rotation
# 3 weeks (dumpcycle) times 5 tapes per week (just
# the weekdays) plus a few to handle errors that
# need amflush and so we do not overwrite the full
# backups performed at the beginning of the previous
# cycle
bumpsize 20 Mb # minimum savings (threshold) to bump level 1 -> 2
bumppercent 20 # minimum savings (threshold) to bump level 1 -> 2
bumpdays 1 # minimum days at each level
bumpmult 4 # threshold = bumpsize * bumpmult^(level-1)
etimeout 300 # number of seconds per filesystem for estimates.
dtimeout 1800 # number of idle seconds before a dump is aborted.
ctimeout 30 # maximum number of seconds that amcheck waits
# for each client host
tapebufs 20 # A positive integer telling taper how many
# 32k buffers to allocate. The default is 20 (640k).
# By default, Amanda can only track at most one run per calendar day. When
# the usetimestamps option is enabled, however, Amanda can track as many
# runs as you care to make.
# WARNING: This option is not backward-compatible. Do not enable it if you
# intend to downgrade your server installation to Amanda community
# edition 2.5
usetimestamps yes
# Specify tape device and/or tape changer. If you don't have a tape
# changer, and you don't want to use more than one tape per run of
# amdump, just comment out the definition of tpchanger.
# Some tape changers require tapedev to be defined; others will use
# their own tape device selection mechanism. Some use a separate tape
# changer device (changerdev), others will simply ignore this
# parameter. Some rely on a configuration file (changerfile) to
# obtain more information about tape devices, number of slots, etc;
# others just need to store some data in files, whose names will start
# with changerfile.
# At most one changerfile entry must be defined; select the most
# appropriate one for your configuration. If you select man-changer,
# keep the first one; if you decide not to use a tape changer, you may
# comment them all out.
runtapes 5 # number of tapes to be used in a single run of
amdump
#tpchanger "chg-manual" # the tape-changer glue script
tapedev "/dev/nst0" # the no-rewind tape device to be used
rawtapedev "/dev/null" # the raw device to be used (ftape only)
#changerfile "/etc/amanda/DailySet1/changer"
#changerfile "/etc/amanda/DailySet1/changer-status"
#changerfile "/etc/amanda/DailySet1/changer.conf"
changerdev "/dev/null"
# If you want Amanda to automatically label any non-Amanda tapes it
# encounters, uncomment the line below. Note that this will ERASE any
# non-Amanda tapes you may have, and may also ERASE any near-failing tapes.
# Use with caution.
label_new_tapes "DailySet1-%%%"
maxdumpsize -1 # Maximum number of bytes the planner will schedule
# for a run (default: runtapes * tape_length).
tapetype HP-DAT # what kind of tape it is (see tapetypes below)
labelstr "^PWI-Volume-[0-9][0-9]*$" # label constraint regex: all tapes
must match
amrecover_do_fsf yes # amrecover will call amrestore with the
# -f flag for faster positioning of the tape.
amrecover_check_label yes # amrecover will call amrestore with the
# -l flag to check the label.
amrecover_changer "" # amrecover will use the changer if you restore
# from this device.
# It could be a string like 'changer' and
# amrecover will use your changer if you
# set your tape with 'settape changer'
# Specify holding disks. These are used as a temporary staging area for
# dumps before they are written to tape and are recommended for most sites.
# The advantages include: tape drive is more likely to operate in streaming
# mode (which reduces tape and drive wear, reduces total dump time); multiple
# dumps can be done in parallel (which can dramatically reduce total dump time.
# The main disadvantage is that dumps on the holding disk need to be flushed
# (with amflush) to tape after an operating system crash or a tape failure.
# If no holding disks are specified then all dumps will be written directly
# to tape. If a dump is too big to fit on the holding disk than it will be
# written directly to tape. If more than one holding disk is specified then
# they will all be used based on activity and available space.
holdingdisk hd1 {
comment "main holding disk"
directory "/opt/amanda" # where the holding disk is
use -100 Mb # how much space can we use on it
# a non-positive value means:
# use all space but that value
chunksize 500Mb # size of chunk if you want big dump to be
# dumped on multiple files on holding disks
# N Kb/Mb/Gb split images in chunks of size N
# The maximum value should be
# (MAX_FILE_SIZE - 1Mb)
# 0 same as INT_MAX bytes
}
#holdingdisk hd2 {
# directory "/dumps2/amanda"
# use 1000 Mb
# }
#holdingdisk hd3 {
# directory "/mnt/disk4"
# use 1000 Mb
# }
# If amanda cannot find a tape on which to store backups, it will run
# as many backups as it can to the holding disks. In order to save
# space for unattended backups, by default, amanda will only perform
# incremental backups in this case, i.e., it will reserve 100% of the
# holding disk space for the so-called degraded mode backups.
# However, if you specify a different value for the `reserve'
# parameter, amanda will not degrade backups if they will fit in the
# non-reserved portion of the holding disk.
reserve 30 # percent
# This means save at least 30% of the holding disk space for degraded
# mode backups.
autoflush yes #
# if autoflush is set to yes, then amdump will schedule all dump on
# holding disks to be flush to tape during the run.
# The format for a ColumnSpec is a ',' seperated list of triples.
# Each triple consists of
# + the name of the column (as in ColumnNameStrings)
# + prefix before the column
# + the width of the column, if set to -1 it will be recalculated
# to the maximum length of a line to print.
# Example:
# "Disk=1:17,HostName=1:10,OutKB=1:7"
# or
# "Disk=1:-1,HostName=1:10,OutKB=1:7"
#
# You need only specify those colums that should be changed from
# the default. If nothing is specified in the configfile, the
# above compiled in values will be in effect, resulting in an
# output as it was all the time.
# The names of the colums are:
# HostName, Disk, Level, OrigKB, OutKB, Compress, DumpTime, DumpRate,
# TapeTime and TapeRate.
# ElB, 1999-02-24.
# columnspec "Disk=1:18,HostName=0:10,OutKB=1:7"
# tapetypes
# Define the type of tape you use here, and use it in "tapetype"
# above. Some typical types of tapes are included here. The tapetype
# tells amanda how many MB will fit on the tape, how big the filemarks
# are, and how fast the tape device is.
# A filemark is the amount of wasted space every time a tape section
# ends. If you run `make tapetype' in tape-src, you'll get a program
# that generates tapetype entries, but it is slow as hell, use it only
# if you really must and, if you do, make sure you post the data to
# the amanda mailing list, so that others can use what you found out
# by searching the archives.
# For completeness Amanda should calculate the inter-record gaps too,
# but it doesn't. For EXABYTE and DAT tapes this is ok. Anyone using
# 9 tracks for amanda and need IRG calculations? Drop me a note if
# so.
# If you want amanda to print postscript paper tape labels
# add a line after the comment in the tapetype of the form
# lbl-templ "/path/to/postscript/template/label.ps"
# if you want the label to go to a printer other than the default
# for your system, you can also add a line above for a different
# printer. (i usually add that line after the dumpuser specification)
# dumpuser "operator" # the user to run dumps under
# printer "mypostscript" # printer to print paper label on
# here is an example of my definition for an EXB-8500
# define tapetype EXB-8500 {
# ...
# lbl-templ "/etc/amanda/config/lbl.exabyte.ps"
# }
define tapetype QIC-60 {
comment "Archive Viper"
length 60 mbytes
filemark 100 kbytes # don't know a better value
speed 100 kbytes # dito
}
define tapetype DEC-DLT2000 {
comment "DEC Differential Digital Linear Tape 2000"
length 15000 mbytes
filemark 8 kbytes
speed 1250 kbytes
}
# goluboff AT butch.Colorado DOT EDU
# in amanda-users (Thu Dec 26 01:55:38 MEZ 1996)
define tapetype DLT {
comment "DLT tape drives"
length 20000 mbytes # 20 Gig tapes
filemark 2000 kbytes # I don't know what this means
speed 1536 kbytes # 1.5 Mb/s
}
# mikee AT pointwise DOT com 061228
define tapetype DLT80 {
comment "DLT tape drives"
length 60000 mbytes # 20 Gig tapes
filemark 2000 kbytes # I don't know what this means
speed 1536 kbytes # 1.5 Mb/s
}
define tapetype SURESTORE-1200E {
comment "HP AutoLoader"
length 3900 mbytes
filemark 100 kbytes
speed 500 kbytes
}
define tapetype EXB-8500 {
comment "Exabyte EXB-8500 drive on decent machine"
length 4200 mbytes
filemark 48 kbytes
speed 474 kbytes
}
define tapetype EXB-8200 {
comment "Exabyte EXB-8200 drive on decent machine"
length 2200 mbytes
filemark 2130 kbytes
speed 240 kbytes
}
define tapetype HP-DAT {
comment "DAT tape drives"
# data provided by Rob Browning <rlb AT cs.utexas DOT edu>
length 1930 mbytes
filemark 111 kbytes
speed 468 kbytes
}
define tapetype DAT {
comment "DAT tape drives"
length 1000 mbytes # these numbers are not accurate
filemark 100 kbytes # but you get the idea
speed 100 kbytes
}
define tapetype MIMSY-MEGATAPE {
comment "Megatape (Exabyte based) drive through Emulex on Vax 8600"
length 2200 mbytes
filemark 2130 kbytes
speed 170 kbytes # limited by the Emulex bus interface, ugh
}
# dumptypes
#
# These are referred to by the disklist file. The dumptype specifies
# certain parameters for dumping including:
# auth - authentication scheme to use between server and client.
# Valid values are "bsd", "krb4", "krb5" and "ssh".
# Default: [auth bsd]
# comment - just a comment string
# comprate - set default compression rate. Should be followed by one or
# two numbers, optionally separated by a comma. The 1st is
# the full compression rate; the 2nd is the incremental rate.
# If the second is omitted, it is assumed equal to the first.
# The numbers represent the amount of the original file the
# compressed file is expected to take up.
# Default: [comprate 0.50, 0.50]
# compress - specify compression of the backed up data. Valid values are:
# "none" - don't compress the dump output.
# "client best" - compress on the client using the best (and
# probably slowest) algorithm.
# "client fast" - compress on the client using fast algorithm.
# "client custom" - compress using your custom client
compression program.
# use client_custom_compress "PROG" to specify
# the custom compression program.
# PROG must not contain white space.
# "server best" - compress on the tape host using the best (and
# probably slowest) algorithm.
# "server fast" - compress on the tape host using a fast
# algorithm. This may be useful when a fast
# tape host is backing up slow clients.
# "server custom" - compress using your server custom
compression program.
# use server_custom_compress "PROG" to specify
# the custom compression program.
# PROG must not contain white space.
# Default: [compress client fast]
# dumpcycle - set the number of days in the dump cycle, ie, set how often a
# full dump should be performed. Default: from DUMPCYCLE above
# estimate Determine the way AMANDA does it's estimate.
# "client" - Use the same program as the dumping program,
# this is the most accurate way to do estimates,
# but it can take a long time.
# "calcsize" - Use a faster program to do estimates, but the
# result is less accurate.
# "server" - Use only statistics from the previous run to
# give an estimate,
# it takes only a few seconds but the result is
not
# accurate if your disk usage changes from day to
day.
# Default: [client]
# encrypt - specify encryption of the backed up data. Valid values are:
# "none" - don't encrypt the dump output.
# "client" - encrypt on the client using the program specified
by
# client_encrypt "PROG".
# Use client_decrypt_option to specify the decrypt-
# parameter, default is "-d".
# PROG and decrypt-parameter must not contain white
space.
# "server" - encrypt on the server using the program specified
by
# server_encrypt "PROG".
# Use server_decrypt_option to specify the decrypt-
# parameter, default is "-d".
# PROG and decrypt-parameter must not contain white
space.
# Default: [none]
# exclude - specify files and directories to be excluded from the dump.
# Useful with gnutar only; silently ignored by dump and samba.
# Valid values are:
# "pattern" - a shell glob pattern defining which files
# to exclude.
# gnutar gets --exclude="pattern"
# list "filename" - a file (on the client!) containing patterns
# re's (1 per line) defining which files to
# exclude.
# gnutar gets --exclude-from="filename"
# Note that the `full pathname' of a file within its
# filesystem starts with `./', because of the way amanda runs
# gnutar: `tar -C $mountpoint -cf - --lots-of-options .' (note
# the final dot!) Thus, if you're backing up `/usr' with a
# diskfile entry like ``host /usr gnutar-root', but you don't
# want to backup /usr/tmp, your exclude list should contain
# the pattern `./tmp', as this is relative to the `/usr' above.
# Please refer to the man-page of gnutar for more information.
# If a relative pathname is specified as the exclude list,
# it is searched from within the directory that is
# going to be backed up.
# Default: include all files
# holdingdisk - should the holding disk be used for this dump. Useful for
# dumping the holding disk itself. Default: [holdingdisk auto]
# "never" - Never use the holding disk.
# "auto" - Use the holding disk if possible.
# "required" - Always use the holding disk.
# ignore - do not back this filesystem up. Useful for sharing a single
# disklist in several configurations.
# index - keep an index of the files backed up. Default: [index no]
# kencrypt - encrypt the data stream between the client and server.
# Default: [kencrypt no]
# maxdumps - max number of concurrent dumps to run on the client.
# Default: [maxdumps 1]
# maxpromoteday - max number of day for a promotion, set it 0 if you don't
# want promotion, set it to 1 or 2 if your disk get
# overpromoted.
# Default: [10000]
# priority - priority level of the dump. Valid levels are "low", "medium"
# or "high". These are really only used when Amanda has no
# tape to write to because of some error. In that "degraded
# mode", as many incrementals as will fit on the holding disk
# are done, higher priority first, to insure the important
# disks are at least dumped. Default: [priority medium]
# program - specify the dump system to use. Valid values are "DUMP",
# or "GNUTAR". Default: [program "DUMP"].
# record - record the backup in the time-stamp-database of the backup
# program (e.g. /etc/dumpdates for DUMP or
# /var/lib/amanda/gnutar-lists for GNUTAR.).
# Default: [record yes]
# skip-full - skip the disk when a level 0 is due, to allow full backups
# outside Amanda, eg when the machine is in single-user mode.
# skip-incr - skip the disk when the level 0 is NOT due. This is used in
# archive configurations, where only full dumps are done and
# the tapes saved.
# starttime - delay the start of the dump? Default: no delay
# strategy - set the dump strategy. Valid strategies are currently:
# "standard" - the standard one.
# "nofull" - do level 1 dumps every time. This can be used,
# for example, for small root filesystems that
# only change slightly relative to a site-wide
# prototype. Amanda then backs up just the
# changes.
# "noinc" - do level 0 dumps every time.
# "skip" - skip all dumps. Useful for sharing a single
# disklist in several configurations.
# "incronly" - do only incremental dumps. This is similar
# to strategy 'nofull', but will increase
# the dump level as usual. Full dumps will
# only be performed when an 'amadmin force'
# has been issued
# Default: [strategy standard]
# tape_splitsize - (optional) split dump file into pieces of a specified size.
# This allows dumps to be spread across multiple tapes, and can
# potentially make more efficient use of tape space. Note that
# if this value is too large (more than half the size of the
# average dump being split), substantial tape space can be
# wasted. If too small, large dumps will be split into
# innumerable tiny dumpfiles, adding to restoration complexity.
# A good rule of thumb, usually, is 1/10 of the size of your
# tape. Default: [disabled]
# split_diskbuffer - (optional) When dumping a split dump in PORT-WRITE
# mode (usually meaning "no holding disk"), buffer the split
# chunks to a file in the directory specified by this option.
# Default: [none]
# fallback_splitsize - (optional) When dumping a split dump in PORT-WRITE
# mode, if no split_diskbuffer is specified (or if we somehow
# fail to use our split_diskbuffer), we must buffer split
# chunks in memory. This specifies the maximum size split
# chunks can be in this scenario, and thus the maximum amount
# of memory consumed for in-memory splitting. Default: [10m]
#
# Note that you may specify previously defined dumptypes as a shorthand way of
# defining parameters.
define dumptype global {
comment "Global definitions"
# This is quite useful for setting global parameters, so you don't have
# to type them everywhere. All dumptype definitions in this sample file
# do include these definitions, either directly or indirectly.
# There's nothing special about the name `global'; if you create any
# dumptype that does not contain the word `global' or the name of any
# other dumptype that contains it, these definitions won't apply.
# Note that these definitions may be overridden in other
# dumptypes, if the redefinitions appear *after* the `global'
# dumptype name.
# You may want to use this for globally enabling or disabling
# indexing, recording, etc. Some examples:
index yes
record no
strategy standard
# split_diskbuffer "/raid/amanda"
fallback_splitsize 64m
}
define dumptype always-full {
global
comment "Full dump of this filesystem always"
compress none
priority high
dumpcycle 0
}
# Dumptypes for gnutar
define dumptype root-tar {
global
program "GNUTAR"
comment "root partitions dumped with tar"
compress none
index
# exclude list "/etc/amanda/exclude.gtar"
priority low
}
define dumptype user-tar {
root-tar
comment "user partitions dumped with tar"
priority medium
}
define dumptype user-tar-span {
root-tar
tape_splitsize 3 Gb
comment "tape-spanning user partitions dumped with tar"
priority medium
}
define dumptype high-tar {
root-tar
comment "partitions dumped with tar"
priority high
}
define dumptype comp-root-tar {
root-tar
comment "Root partitions with compression"
compress client fast
}
define dumptype comp-user-tar {
user-tar
compress client fast
}
define dumptype comp-user-tar-span {
user-tar-span
compress client fast
}
define dumptype holding-disk {
global
comment "The master-host holding disk itself"
holdingdisk never # do not use the holding disk
priority medium
}
define dumptype comp-user {
global
comment "Non-root partitions on reasonably fast machines"
compress client fast
priority medium
}
define dumptype comp-user-span {
global
tape_splitsize 5 Gb
comment "Tape-spanning non-root partitions on reasonably fast machines"
compress client fast
priority medium
}
define dumptype nocomp-user {
comp-user
comment "Non-root partitions on slow machines"
compress none
}
define dumptype nocomp-user-span {
comp-user-span
comment "Tape-spanning non-root partitions on slow machines"
compress none
}
define dumptype comp-root {
global
comment "Root partitions with compression"
compress client fast
priority low
}
define dumptype nocomp-root {
comp-root
comment "Root partitions without compression"
compress none
}
define dumptype comp-high {
global
comment "very important partitions on fast machines"
compress client best
priority high
}
define dumptype nocomp-high {
comp-high
comment "very important partitions on slow machines"
compress none
}
define dumptype nocomp-test {
global
comment "test dump without compression, no /etc/dumpdates recording"
compress none
record no
priority medium
}
define dumptype comp-test {
nocomp-test
comment "test dump with compression, no /etc/dumpdates recording"
compress client fast
}
define dumptype custom-compress {
global
program "GNUTAR"
comment "custom client compression dumped with tar"
compress client custom
client_custom_compress "/usr/bin/bzip2"
}
define dumptype server-encrypt-fast {
global
program "GNUTAR"
comment "fast client compression and server symmetric encryption"
compress client fast
encrypt server
server_encrypt "/usr/sbin/amcrypt"
server_decrypt_option "-d"
}
define dumptype client-encrypt-nocomp {
global
program "GNUTAR"
comment "no compression and client symmetric encryption"
compress none
encrypt client
client_encrypt "/usr/sbin/amcrypt"
client_decrypt_option "-d"
}
# To use gpg public-key encryption, gpg does compress with zlib by default.
# Thus, no need to specify compress
#define dumptype gpg-encrypt {
# global
# program "GNUTAR"
# comment "server public-key encryption, dumped with tar"
# compress none
# encrypt server
# server_encrypt "/usr/sbin/amgpgcrypt"
# server_decrypt_option "-d"
#}
# network interfaces
#
# These are referred to by the disklist file. They define the attributes
# of the network interface that the remote machine is accessed through.
# Notes: - netusage above defines the attributes that are used when the
# disklist entry doesn't specify otherwise.
# - the values below are only samples.
# - specifying an interface does not force the traffic to pass
# through that interface. Your OS routing tables do that. This
# is just a mechanism to stop Amanda trashing your network.
# Attributes are:
# use - bandwidth above which amanda won't start
# backups using this interface. Note that if
# a single backup will take more than that,
# amanda won't try to make it run slower!
define interface local {
comment "a local disk"
use 1000 kbps
}
define interface le0 {
comment "10 Mbps ethernet"
use 400 kbps
}
# You may include other amanda configuration files, so you can share
# dumptypes, tapetypes and interface definitions among several
# configurations.
#includefile "/etc/amanda/amanda.conf.main"
----------------- /etc/amanda/amanda.conf.main
|
