AMADMIN(8)

NAME
amadmin - administrative interface to control Amanda backups

SYNOPSIS
amadmin config command [ command options ]

DESCRIPTION
Amadmin performs various administrative tasks on the config Amanda configuration.

See the amanda(8) man page for more details about Amanda.

COMMANDS
Commands that take a hostname [ disks ] parameter pair operate on all disks in the disklist for that hostname if no disks are specified. Where hostname is also marked as being optional, the command operates on all hosts and disks in the disklist.

Hostnames are case-insensitive matched from the left breaking at each dot. So "HostA" will match "hosta" as well as "hosta.some.domain" and "hosta.another.domain". But it will not match "hostabc" or "hostabc.some.domain" or "hostabc.another.domain".

However "HostA.some" will only match "hosta.some.domain", not "hosta.another.domain", or "hosta.something.domain" or just "hosta".

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. The config parameter must be present but is ignored.

Force the
    disks on hostname to bump to a new incremental level during the next Amanda run.

Force the
    disks on hostname to not bump to a new incremental level during the next Amanda run.

Undo a previous
    force-bump or force-no-bump command.

Force the
    disks on hostname to do a full (level 0) backup during the next Amanda run.

Undo a previous
    force command.

The tapes listed
    will be available for reuse at their point in the tape cycle.

The tapes listed
    will not be reused when their turn comes up again in the tape cycle. Note that if this causes the number of reusable tapes to drop below the amanda.conf tapecycle value, Amanda will request new tapes until the count is satisfied again.

Show when the next full dump is due.

Display all backups currently on tape or in the holding disk.
    The tape label or holding disk filename, file number, and status are displayed.

    The --sort option changes the sort order using the following flags:

    An uppercase letter reverses the sort order for that key. The default sort order is hkdlb.

Delete the specified
    disks on hostname 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 during the next run.

tape
    Display the tape(s) Amanda expects to write to during the next run. See also amcheck(8).

bumpsize
    Display the current bump threshold parameters, calculated for all backup levels.

balance
    Display the distribution of full backups throughout the dump schedule.

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.

Display the
    disklist information for each of the disks on hostname (or all hosts). Mostly used for debugging.

Display the
    database record for each of the disks on hostname (or all hosts). Mostly used for debugging.

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. Without the extra regular expression characters, just "/" will match 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.
        amadmin: machine-a:/var is set to a forced level 0 tonight.
        amadmin: machine-a:/usr 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 backup images of /var from machine-c. The tape or file column displays either a tape label or a filename depending on whether the image is on tape or is still in the holding disk. If the image is on tape, the file column tells you which file on the tape has the image (file number zero is a tape label). This column shows zero and is not meaningful if the image is still in the holding disk. 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 or file                    file status
        2000-11-09  machine-c /var  0 000110                             9 OK
        2000-11-08  machine-c /var  2 000109                             2 OK
        2000-11-07  machine-c /var  2 /amanda/20001107/machine-c._var.2  0 OK
        2000-11-06  machine-c /var  2 000107                             2 OK
        2000-11-05  machine-c /var  2 000106                             3 OK
        2000-11-04  machine-c /var  2 000105                             2 OK
        2000-11-03  machine-c /var  2 000104                             2 OK
        2000-11-02  machine-c /var  2 000103                             2 OK
        2000-11-01  machine-c /var  1 000102                             5 OK
        2000-10-31  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 during 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 doing full backups that night, and orig KB and out KB show the estimated total size of the backups before and after 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 balance 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
/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)