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Shell Programming and Scripting
Need help updating my AIX shell script that uses IBM tape tool.
Post 302962275 by Don Cragun on Thursday 10th of December 2015 06:13:51 PM
12-10-2015
Quote:
Thanks for the quick responses 
The tape library has 24 slots, the way they are counted is 23 slots + 1 tape head/drive slot.
The address of the first tape slot is 4096 and the address of the last (slot 23) is 4118; i'd like all of them to be used in a round robin kind of method. The idea is, this script gets called nightly to "change tapes" before the backup to tape happens. So every night it should be using a different tape (+1) until it reaches the 23rd tape (address 4118) then goes back to 1 (address 4096).
Sorry for the lack of information, I hope this is more complete now.
With the above changes you suggested, will it support this?
The tape library has 24 slots, the way they are counted is 23 slots + 1 tape head/drive slot.
The address of the first tape slot is 4096 and the address of the last (slot 23) is 4118; i'd like all of them to be used in a round robin kind of method. The idea is, this script gets called nightly to "change tapes" before the backup to tape happens. So every night it should be using a different tape (+1) until it reaches the 23rd tape (address 4118) then goes back to 1 (address 4096).
Sorry for the lack of information, I hope this is more complete now.
With the above changes you suggested, will it support this?
Quote:
If you're trying to use slots 4097 through 4119 approximately the same number of times in a round robin order based on the date (as opposed to keeping track of what had been used the last time your script was called)...
Code:
SLOT=$((BASESLOT + 1 + ((DATE - 1) % 23)))Code:
SLOT=$((BASESLOT + ((DATE - 1) % 23)))
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LEARN ABOUT REDHAT
amlabel
AMLABEL(8) System Manager's Manual AMLABEL(8) NAME
amlabel - label an Amanda tape SYNOPSIS
amlabel [-f] config label [ slot slot ] DESCRIPTION
All Amanda tapes must be pre-labeled before they are used. Amanda verifies the label in amdump and amflush before writing to make sure the proper tape is loaded. Amlabel writes an Amanda label on the tape in the device specified by the amanda.conf file in /etc/amanda/config. Label may be any string that does not contain whitespace and that matches the amanda.conf labelstr regular expression option. It is up to the system administrator to define a naming convention. Amlabel appends the new tape to the tapelist file so it will be used by Amanda before it reuses any other tapes. When you amlabel multiple tapes, they will be used in the order you amlabel them. Amlabel will not write the label if the tape contains an active Amanda tape or if the label specified is on an active tape. The -f (force) flag bypasses these verifications. An optional slot may be specified after the tape label. If a tape changer is in use, amlabel will label the tape in the specified slot instead of the currently loaded tape. See the amanda(8) man page for more details about Amanda. EXAMPLE
Write an Amanda label with the string "DMP000" on the tape loaded in the device named in the tapedev option in /etc/amanda/Daily- Set1/amanda.conf: % amlabel DailySet1 DMP000 Label the tape in slot 3 of the currently configured tape changer with the string "DMP003": % amlabel DailySet1 DMP003 slot 3 MESSAGES
label label doesn't match labelstr "str" Label label on the command line does not match the labelstr regular expression str from amanda.conf. label label already on a tape Label label is already listed as an active Amanda tape. no tpchanger specified in "path", so slot command invalid The command line has the slot parameter but the amanda.conf file in path does not have a tape changer configured. reading label label, tape is in another amanda configuration This tape appears to be a valid Amanda tape, but label does not match labelstr for this configuration so it is probably part of a different Amanda configuration. reading label label, tape is active Tape label appears to already be part of this Amanda configuration and active, i.e. has valid data on it. no label found, are you sure tape is non-rewinding? While checking that the label was written correctly, amlabel got an error that might be caused by mis-configuring Amanda with a rewinding tape device name instead of a non-rewinding device name for tape. AUTHOR
James da Silva <jds@cs.umd.edu> University of Maryland, College Park SEE ALSO
amanda(8) amdump(8) amflush(8) AMLABEL(8)