I have a somewhat strage problem with chg-scsi under linux and I
would dearly like som help. The setup is as follows:
I have a Exabyte EXB-480 gismo with 4 Exabyte Mammoth EXB-8900
tapedrives in it. Now if I use Eric Lee Green's mtx (1.2.12) the whole
thing works just great. I can load and unload tapes and get a nice
status of the robot just fine. But in my test-setup of amanda (version
2.4.2) I get a rather strange error when I use chg-scsi. Amcheck tells
me this:
=================================================================
rane > ./sbin/amcheck Home
Amanda Tape Server Host Check
-----------------------------
Holding disk /usr/local/opt/amanda/hold: 7660808 KB disk space
available, that's plenty
amcheck-server: could not get changer info: requested drive number (0)
greater than number of supported drives (-1)
Amanda Backup Client Hosts Check
--------------------------------
Client check: 1 host checked in 0.177 seconds, 0 problems found
(brought to you by Amanda 2.4.2)
rane >
=================================================================
In /tmp/amanda/chg-scsi.debug my exb-480 (/dev/sgf) is recognised just
fine and the one tapedrive I tried to configure (/dev/nst0) is also
recognised just fine. But right at the bottom of
/tmp/amanda/chg-scsi.debug I found the following:
=================================================================
##### START SenseHandler
Ident = [EXB-480], function = [generic]
##### START GenericSenseHandler
##### START DecodeSense
GenericSenseHandler : Sense Keys
ErrorCode 02
Valid 0
ASC 46
ASCQ 00
Sense key 00
No Sense
GenericSenseHandler : Unknow 0 ASC = 46 ASCQ = 0
#### STOP SenseHandler
chg-scsi: requested drive number (0) greater than number of supported
drives (-1)
=================================================================
I don't know if this is the cause, but it sure looks like it to me.
1) Does anybody know what this means?
2) Does anybody know how I can get amanda running with my robot.
My amanda.conf looks like this:
=================================================================
org "DIKU"
mailto "hall"
dumpuser "alexbkup"
inparallel 4
netusage 600 Kbps
dumpcycle 1 weeks
runspercycle 5
tapecycle 10 tapes
bumpsize 20 Mb
bumpdays 1
bumpmult 4
etimeout 300
dtimeout 1800
tapebufs 20
runtapes 1
tpchanger "chg-scsi"
tapedev "0"
changerfile "/usr/local/opt/amanda/etc/amanda/Home/chg-scsi.conf"
changerdev "/dev/sgf"
tapetype EXB-8900
labelstr "^Home[0-9][0-9]*$"
holdingdisk hd1 {
comment "main holding disk"
directory "/usr/local/opt/amanda/hold" # where the holding disk is
use 2 Gb # how much space can we use on it
# a negative value mean:
# use all space except that value
chunksize 1Gb # 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
# 0 same as INT_MAX bytes
# -1 same as -INT_MAX bytes
# -N Kb/Mb/Gb dont split, dump images larger than
# N directly to tape (example: -2 Gb)
}
infofile "/usr/local/opt/amanda/etc/amanda/Home/curinfo" # database DIRECTORY
logdir "/usr/local/opt/amanda/etc/amanda/Home/logs" # log directory
indexdir "/usr/local/opt/amanda/etc/amanda/Home/index" # index directory
#tapelist "/usr/adm/amanda/DailySet1/tapelist" # list of used tapes
# tapelist is stored, by default, in the directory that contains amanda.conf
define tapetype EXB-8900 {
comment "Exabyte 8900 Mammoth"
length 18920 mbytes
filemark 694 kbytes
speed 2974 kbytes
}
# 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" and "krb4". 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.
# "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.
# 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
# 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 yes]
# 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]
# 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" and
# "GNUTAR". Default: [program "DUMP"].
# record - record the dump in /etc/dumpdates. 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.
# Unfortunately, this is not currently
# implemented. Use `dumpcycle 0'
# instead.
# "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]
#
# 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
}
define dumptype always-full {
global
comment "Full dump of this filesystem always"
compress none
priority high
dumpcycle 0
}
define dumptype root-tar {
global
program "GNUTAR"
comment "root partitions dumped with tar"
compress none
index
exclude list "/usr/local/lib/amanda/exclude.gtar"
priority low
}
define dumptype user-tar {
root-tar
comment "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 holding-disk {
global
comment "The master-host holding disk itself"
holdingdisk no # 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 nocomp-user {
comp-user
comment "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
}
# 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 eth0 {
comment "100 Mbps ethernet"
use 4000 kbps
}
# You may include other amanda configuration files, so you can share
# dumptypes, tapetypes and interface definitions among several
# configurations.
#includefile "/usr/local/amanda.conf.main"
=================================================================
and my chg-scsi.conf looks like this:
=================================================================
number_configs 1
eject 0
sleep 90
cleanmax 100
changerdev /dev/sgf
# Next comes the data for drive 0
#
config 0
drivenum 0
dev /dev/nst0
scsitapedev /dev/sgb
startuse 12
enduse 21
statfile /usr/local/opt/amanda/etc/amanda/Home/tape0-slot
cleancart 5
cleanfile /usr/local/opt/amanda/etc/amanda/Home/tape0-clean
usagecount /usr/local/opt/amanda/etc/amanda/Home/totaltime
tapestatus /usr/local/opt/amanda/etc/amanda/Home/tapestatus
labelfile /usr/local/opt/amanda/etc/amanda/Home/labelfile
=================================================================
--
Christoffer
