Sponsored Content
Top Forums UNIX for Advanced & Expert Users Space free on tape /delete a single file on tape Post 302100603 by Corona688 on Wednesday 20th of December 2006 11:03:15 PM
Old 12-21-2006
Because you're not telling tar to append. You're overwriting the tape every time, starting at the beginning of the tape and writing towards the end. It's like overwriting the same file every time.

You're archiving with something like 'tar -cf /dev/rmt/0', yes? That creates a new archive every time, overwriting the parts you've already saved to. 'tar -rf /dev/rmt/0' will append to an existing archive. See 'man tar' for details.

here is a google groups thread describing the process.
 

9 More Discussions You Might Find Interesting

1. UNIX for Advanced & Expert Users

Tape space used not correct

version: SCO 5.0.5 There is a file in /usr/local/bin called ' baktape ', I'm unsure whether this is a standard unix file or one created by someone who used to manage this server? Anyway, it backs up what is specified to be backed up to tape and then prints off a report. Problem: What comes... (2 Replies)
Discussion started by: system77
2 Replies

2. Solaris

How to recover a single file from tape

Hi I have taken a backup using /usr/sbin/ufsdump -0uf /dev/rmt/0n I want to recover one file from it but finding it hard nut to crack. Can you please give me a simple way of recovering it? Thanks (2 Replies)
Discussion started by: krishan
2 Replies

3. UNIX for Dummies Questions & Answers

Mounting DLT tape and to backup file to tape

Hi there: I'm new here Can anyone help me: I have DS15 Alpha server : Unix 5.1B Now i need to connect a DLVT VS80 1U Rackmount Tape Drive unit. What is the exact comman to mount the DLTape IV?? How do i make backuo @ copy file to the tape? Thanx to all (0 Replies)
Discussion started by: ayzeayem
0 Replies

4. SCO

Tape Status shows 2 Hard errors and 5 Underruns on new tape

when I do a tape status /dev/rStp0 I get the following on a new tape and I have tried several: Status : ready beginning-of-tape soft errors : 0 hard errors: 2 underruns: 5 My BackupEdge has stopped backing up my system because it asks for a new volume yet my total system data is under 20... (5 Replies)
Discussion started by: psytropic
5 Replies

5. AIX

I could not delete the tape in AIX !

I could not delete the tape in AIX This is the steps which i used .. but still it did not deleted .. ! server/root>lscfg -l rmt0 rmt0 U789D.001.DQD298Y-P1-C5-T2-L6-L0 Other SCSI Tape Drive server/root> server/root> server/root>lsdev -l rmt0 -F parent scsi3... (3 Replies)
Discussion started by: Mr.AIX
3 Replies

6. AIX

How to make a copy of a tape to another tape?

Hello, We need to make a copy of a backup tape, using the 2 tape recorders in IBM 3582 Tape Library We tried tu use "tcopy", it seems to work fine (no error messages) but we aren't sure if we can rely on it. my question is how to check if the copy succeded or not, but i also want to know... (3 Replies)
Discussion started by: fastlane3000
3 Replies

7. AIX

Ejecting tape on AIX & Some Tape commands

I am trying to use this command to eject the tape mt -f /dev/rmt/0 unload but it gives me error mt -f /dev/rmt/0 unload mt: 0511-575 unload is not a recognized subcommand. Usage: mt Subcommand Valid subcommands are: weof eof fsf bsf ... (5 Replies)
Discussion started by: filosophizer
5 Replies

8. Solaris

UNIX Checking Tape Space

Hello. My name is Alex and I am new to the UNIX environment. One of the things that I do on a daily basis is I perform backups to tape on a Sun Ultra 25. I use DAT72 tape. The tape that is currently in the tape drive has about five database backups within it already. I was just hoping... (19 Replies)
Discussion started by: daddy.torres
19 Replies

9. UNIX for Beginners Questions & Answers

How to copy a 2 Volume mksysb backup to a single tape?

Hi, I have an mksysb backup which consists of 2 Volume, how do I combine it into a single Volume or tape ? Appreciate it (1 Reply)
Discussion started by: AIXBlueCat
1 Replies
updadmin(8)						      System Manager's Manual						       updadmin(8)

NAME
updadmin - Invokes the Update Installation Cleanup utility to remove or archive backup files created by an Update Installation SYNOPSIS
/usr/sbin/updadmin DESCRIPTION
The updadmin command invokes the Update Administration Cleanup utility, which removes or archives the backup files that were created by an Update Installation process. There are no flags or options associated with this command. Running this utility is an optional step after performing an Update Installation, but it is recommended if you want to recover disk space being consumed by these backup files. The backup files that are created by an Update Installation have these extensions: *.PreMRG - A file saved to a extension is a backup copy of a customized protected system file. System files in this category are system files that are expected to be customized by users, for example, /etc/passwd and /etc/hosts. If the automatic merge process fails to merge the new version of the file with your customizations to the file, your customizations must be merged manually into the new version of the file when the Update Installation is complete. The *.PreMRG version is a copy of the file as it existed before the Update Installation and only will be present if the automatic merge fails. *.PreUPD - A file saved to a extension is a backup copy of a customized unprotected system file as it existed before the Update Installa- tion. System files in this category are system files that are not expected to be customized by users, for example, /usr/bin/X11/netscape. If an unprotected system file is altered in any way, customizations must be merged manually into the new version of the system file when the Update Installation is complete. When you are finished merging your customizations into the new version of the file, these backup files no longer are needed, and they can be removed or archived. The Update Installation Cleanup utility gives you the option to archive or remove all backup files, or to select only the files you want. You are prompted to enter an archive destination if you decide to archive the files. The Update Installation Cleanup utility uses the tar(1) command to create the archive, and the archive destination can be any archive des- tination supported by the tar command, including tape devices. The default archive location is the backup.tar file in the /var/adm/update/ directory. You can use any file name you want, but if you want the file to have a extension, you must enter it as part of the file name. If the file name exists, it is overwritten. You have the option to compress the archive file with the gzip utility; if you do, a extension is appended automatically. Unless you compress the archive file, the space savings realized by archiving to a tar file on disk will be only in moving the files from the / (root), /usr, or /var file systems to the file system containing the archive. To save disk space, archive the files to tape. To archive to a tape device in tar format, enter archive destinations similar to the following: /dev/tape/tape0c - archives to a default density rewind tape (with compression) /dev/ntape/tape0_d0 - archives to a nonrewind tape device 0. The _d0 suffix specifies the density. If you are archiving to a nonrewind tape device, it is recommended to use a brand new or erasable tape. On systems capable of graphical display, the updadmin command invokes a graphical user interface to the Update Installation Cleanup util- ity. On systems that are not capable of graphical displays, a text-based, menu-driven user interface is invoked. The Update Installation Cleanup utility is also available as a task from the SysMan Menu. To view the online help for the Update Installation Cleanup utility without running the utility, use the following command: # /usr/dt/bin/dthelpview -h /usr/dt/appconfig/help/C/updadmin.sdl RESTRICTIONS
You must have root privileges to use the Update Installation Cleanup utility. If your system has not been updated to the next version of the operating system by the Update Installation process, the Update Installation Cleanup utility cannot be invoked. FILES
Update Administration Cleanup utility Contains the online help for the Update Administration Cleanup utility. Default location of the ar- chive file SEE ALSO
Commands: tar(1), gzip(1), sysman(8), installupdate(8) Installation Guide updadmin(8)
All times are GMT -4. The time now is 02:47 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy