AMADMIN(8) System Administration Commands AMADMIN(8)
NAME amadmin - administrative interface to control Amanda backups
SYNOPSIS amadmin config command [command_options...] [-o configoption]...
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(5) 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(5). Both hostname and disks are special expressions; see the "HOST & DISK EXPRESSION" section of amanda(8) for a description.
Commands that take one or more dumpspec parameters operate on the set of dumps specified by all of the expressions. See the "DUMP SPECIFICATIONS" section of amanda(8) for a description.
version Show the current version and some compile time and runtime parameters. The config parameter must be present but is ignored.
force-bump [ hostname [ disks ]* ]+ Force the disks on hostname to bump to a new incremental level during the next Amanda run.
force-no-bump [ hostname [ disks ]* ]+ Force the disks on hostname to not bump to a new incremental level during the next Amanda run.
unforce-bump [ hostname [ disks ]* ]+ Undo a previous force-bump or force-no-bump command.
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 listed will be available for reuse at their point in the tape cycle.
no-reuse tapelabel [ ... ] 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.
Tape marked no-reuse are available for recovery, marking them no-reuse is a security to be sure amanda will not overwrite them.
due [ hostname [ disks ]* ]* Show when the next full dump is due.
find [ --sort hkdlpbfw ] [ hostname [ disks ]* ]* 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:
h: host name k: disk name d: dump timestamp l: backup level p: dump part b: tape label f: filenum on tape w: write timestamp
An uppercase letter reverses the sort order for that key. The default sort order is hkdlpbfw.
holding delete hostname [ disk [ datestamp [ .. ] ] ] Delete holding files matching the given specification. At least a hostname must be provided.
holding list [-l] [-d] [ hostname [ disk [ datestamp [ .. ] ] ] ] List holding files matching the given specification, or all holding files if no specification is provided. With ´-l´, additional information (size, level, and whether the dump is outdated) is provided. With ´-d´, only outdated dumps are shown.
An outdated holding file is one which is not required for a restore of the most recent dump. Note that outdated dumps may still be required for restores at earlier dates. For example, assume that a DLE had a level 0 on Monday, level 1´s Tuesday through Thursday, and a level 2 on Friday. Then the files required for a restore of Fridays (the most recent) dump are those from Monday (level 0), Thursday (level 1), and Friday (level 2). Tuesday and Wednesday´s files are outdated.
delete [ hostname [ disks ]* ]+ Delete the specified disks on hostname from the Amanda database.
Note If you do not also remove the disk from the disklist(5) 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 [ --days <num> ] 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(5) 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 debugging.
-o configoption See the "CONFIGURATION OVERRIDE" section in amanda(8).
EXAMPLES Request three specific file systems on machine-a get a full level 0 backup during the next Amanda run. $ amadmin daily 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 daily 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 daily 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 daily find machine-c /var date host disk lv tape or file file part 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(5) file, Amanda will treat it as a new disk during the next run. $ amadmin daily delete machine-d /workspace amadmin: machine-d:/workspace deleted from database. amadmin: NOTE: you´ll have to remove these from the disklist(5) yourself.
Find the next tape Amanda will use (in this case, 123456). $ amadmin daily 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 daily 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)
SEE ALSO amanda(8), amcheck(8), amdump(8), amrestore(8), amfetchdump(8), : http://wiki.zmanda.com
AUTHORS James da Silva <email@example.com>
Stefan G. Weichinger <firstname.lastname@example.org>
Amanda 2.6.1p2 11/05/2009 AMADMIN(8)