amadmin - administrative interface to control Amanda back-
ups
SYNOPSIS
amadmin config command [ command options ]
DESCRIPTION
Amadmin performs various administrative tasks on the con-
fig Amanda configuration.
See the amanda(8) man page for more details about Amanda.
COMMANDS
All commands that take hostname [ disks ] parameters oper-
ate on all the disks in the disklist for that hostname if
no disks are specified.
Disks are regular expressions, so "sd0" will match disks
"sd0a" and "sd0g" and "/mnt" will match "/mnt", "/mnt/a",
and "/mnt/b". To match only "/mnt", use "^/mnt$". This
is the same mechanism used by amrestore(8).
version
Show the current version and some compile time and
runtime parameters.
force hostname [ disks ]
Force the disks on hostname to do a full level 0
backup during the next Amanda run.
unforce hostname [ disks ]
Undo a previous force command.
reuse [ tapelabel ]
The tapes tapelabel will be reuse in the cycle.
no-reuse [ tapelabel ]
The tapes tapelabel will never be reuse in the
cycle.
find [ --sort hkdlb ] hostname [ disks ]
Display all backups currently on tape for each
disk. The tape label, file number, and status are
displayed.
The --sort option changes the sort order using the
following flags:
h host name
k disk name
d dump date
An uppercase letter reverses the sort order for
that key. The default sort order is hkdlb.
delete hostname disks
Delete the specified disks from the Amanda
database.
Note: if you do not also remove the disk from the
disklist file, Amanda will treat it as a new disk
on the next run.
tape Display the label of the tape Amanda is expecting
to write to next. See also amcheck(8).
bumpsize
Display the current bump threshold parameters, cal-
culated for all backup levels.
balance
Display the distribution of full backups throughout
the dump schedule.
export [ hostname [ disks ] ]
Convert records from the Amanda database to a text
format that may be transmitted to another Amanda
machine and imported.
import Convert exported records read from standard input
to a form Amanda uses and insert them into the
database on this machine.
disklist [ hostname [ disks ] ]
Display the disklist information for each of the
disks on hostname (or all hosts). Mostly used for
debugging.
info [ hostname [ disks
Display the database record for each of the disks
on hostname (or all hosts). Mostly used for debug-
ging.
EXAMPLES
Request three specific file systems on machine-a get a
full level 0 backup during the next Amanda run.
Note the use of "^/$" to get the root file system. With-
out the extra regular expression characters, just "/"
would have matched all the file systems on machine-a.
$ amadmin DailySet1 force machine-a "^/$" /var /usr
amadmin: machine-a:/ is set to a forced level 0 tonight.
Request all file systems on machine-b get a full level 0
backup during the next Amanda run.
$ amadmin DailySet1 force machine-b
amadmin: machine-b:/ is set to a forced level 0 tonight.
amadmin: machine-b:/var is set to a forced level 0 tonight.
amadmin: machine-b:/usr is set to a forced level 0 tonight.
amadmin: machine-b:/home is set to a forced level 0 tonight.
Undo the previous force request for /home on machine-b.
The other file systems will still get a full level 0
backup.
$ amadmin DailySet1 unforce machine-b /home
amadmin: force command for machine-b:/home cleared.
Locate tapes holding /var from machine-c. The file column
tells you which file on the tape has the backup (file num-
ber zero is a tape label). The status column tells you
whether the backup was successful or had some type of
error.
$ amadmin DailySet1 find machine-c /var
date host disk lv tape file status
1997-11-09 machine-c /var 0 000110 9 OK
1997-11-08 machine-c /var 2 000109 2 OK
1997-11-07 machine-c /var 2 000108 2 OK
1997-11-06 machine-c /var 2 000107 2 OK
1997-11-05 machine-c /var 2 000106 3 OK
1997-11-04 machine-c /var 2 000105 2 OK
1997-11-03 machine-c /var 2 000104 2 OK
1997-11-02 machine-c /var 2 000103 2 OK
1997-11-01 machine-c /var 1 000102 5 OK
1997-10-31 machine-c /var 1 000101 3 OK
Forget about the /workspace disk on machine-d. If you do
not also remove the disk from the disklist file, Amanda
will treat it as a new disk on the next run.
$ amadmin DailySet1 delete machine-d /workspace
amadmin: machine-d:/workspace deleted from database.
amadmin: NOTE: you'll have to remove these from the disklist yourself.
Find the next tape Amanda will use (in this case, 123456).
$ amadmin DailySet1 tape
The next Amanda run should go onto tape 123456 or a new tape.
Show how well full backups are balanced across the dump
cycle. The due-date column is the day the backups are due
for a full backup. #fs shows the number of filesystems
any compression, respectively.
The balance column shows how far off that night's backups
are from the average size (shown at the bottom of the bal-
ance column). Amanda tries to keep the backups within +/-
5%, but since the amount of data on each filesystem is
always changing, and Amanda will never delay backups just
to rebalance the schedule, it is common for the schedule
to fluctuate by larger percentages. In particular, in the
case of a tape or backup failure, a bump will occur the
following night, which will not be smoothed out until the
next pass through the schedule.
The last line also shows an estimate of how many Amanda
runs will be made between full backups for a file system.
In the example, a file system will probably have a full
backup done every eight times Amanda is run (e.g. every
eight days).
$ amadmin DailySet1 balance
due-date #fs orig KB out KB balance
-------------------------------------------
11/10 Mon 21 930389 768753 +5.1%
11/11 Tue 29 1236272 733211 +0.2%
11/12 Wed 31 1552381 735796 +0.6%
11/13 Thu 23 1368447 684552 -6.4%
11/14 Fri 32 1065603 758155 +3.6%
11/15 Sat 14 1300535 738430 +0.9%
11/16 Sun 31 1362696 740365 +1.2%
11/17 Mon 30 1427936 773397 +5.7%
11/18 Tue 11 1059191 721786 -1.3%
11/19 Wed 19 1108737 661867 -9.5%
-------------------------------------------
TOTAL 241 12412187 7316312 731631 (estimated 8 runs per dumpcycle)
FILES
/usr/amanda/etc/amanda/config/amanda.conf
AUTHOR
James da Silva <jds@cs.umd.edu>
University of Maryland, College Park
SEE ALSO
amanda(8), amcheck(8), amdump(8), amrestore(8)