tape drive tar files


tar on remote tape drive - UNIX

Mar 26, 2007· dear moderator blowtorch, as you have instructed, i had my problem now already fixed. i can now save files using tar on a remote tape drive. i created a .rhost file on server2 with server1's user in it. but it required me also adding server1's hostname on server2's hosts.equiv file, ...

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Linear Tape File System - Wikipedia

Linear Tape File System. The Linear Tape File System ( LTFS) is a file system that allows files stored on magnetic tape to be accessed in a similar fashion to those on disk or removable flash drives. It requires both a specific format of data on the tape media and software to …

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GNU tar 1.34: 9.6.1 Archives Longer than One Tape or Disk

Mar 24, 2021· The method tar uses to detect end of tape is not perfect, and fails on some operating systems or on some devices. If tar cannot detect the end of the tape itself, you can use '--tape-length' option to inform it about the capacity of the tape: '--tape-length=size[suf]' '-L size[suf]' Set maximum length of a volume. The suf, if given, specifies units in which size is expressed, e.g ...

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Write tar archive to tape and then extract individual files

Jun 04, 2020· We would like to be able to restore a single file from the middle of the archive without having to restore the whole archive from tape, or without tar having to scan through the whole archive. We want to do a fast block seek with the tape drive to the location of the file, and then restore the file –

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Saving to and restoring from a tape device - IBM

To save and restore AIX files between a partition that uses i5/OS resources and a shared tape drive, follow these steps: Type the following command: tar -c -f /dev/rmt0 files Use the following descriptions to help you understand the arguments of this command: tar …

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15 Useful Linux and Unix Tape Managements Commands For ...

Dec 22, 2020· Tape backup files are created using cpio, tar, dd, and so on. However, tape device can be opened, written data to, and closed by the various program. You can store several backups (tapes) on physical tape. Between each tape file is a "tape file mark". This is used to indicate where one tape file ends and another begins on physical tape.

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unix - How to list the files on a tape with tar? - Server ...

Since the backup was created using SAM, TAR was NOT used to create the tape. More than likely 'fbackup' was actually used. In order to see what is on the tape i should use the 'frecover' program. This command will read the table of contents from the tape (/dev/rmt/0m) and write it out to /tape/tape.idx. # frecover -I /tape/tape.idx -f /dev/rmt/0m

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TAR File Extension - What is a .tar file and how do I open it?

Jun 25, 2020· The TAR format was introduced with the tar utility in 1979 to write data to tape drives, which were data storage devices that would read and write data on magnetic tape. The TAR name comes from "Tape archive." In modern computing, the TAR format is typically used on Unix and Linux systems to consolidate multiple files into one file.

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linux - What is a safe way to dump data from a tape drive ...

Nov 08, 2018· I was able to get the tape drive connected to Linux and executed the following commands: mt -f /dev/nst0 rewind dd if=/dev/nst0 of=dump.file My question is, if you do not know what format the tape was created under, what is the safest way to use dd? On the flip side, if you knew all the files were tar files, what would you then do?

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Tar backup: How to create an archive with Linux - IONOS

Jul 10, 2020· Tar is a program for archiving on Linux and related systems. Atypically for this kind of program, tar doesn't offer compression by default. But the program is very popular because it offers the great advantage that entire directories can be merged into one file.This technology is associated with the program's history: With a tape drive, the data is transferred successfully to a magnetic tape.

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Integrating a Tape Drive into a Linux System - Tandberg ...

Read from a tape drive set for 1 KB fixed mode. When the tape driver receives a request to retrieve a specific logical block, it calculates how many fixed mode tape blocks to request. Example: tar asks for 10 KB blocks. The Linux tape driver knows the drive is in 1 KB mode, so it requests a single Read Fixed command of 10 blocks.

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Tar

Your personal workstation probably doesn't have a tape drive connected. This makes creating tar backup files slightly more complicated. If you have an account on a machine with a tape drive, and the directory is NFS mounted, you can just rlogin to the other machine and use tar to backup your directory.

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GNU tar - Choosing Files and Names for tar

Usually this refers to some physical tape drive on the machine. Often, the installer of tar didn't set the default to anything meaningful at all. ... tar --create --file=foo.tar -C /etc passwd hosts -C /lib libc.a This command will place the files `/etc/passwd', `/etc/hosts', and `/lib/libc.a' into the archive.

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Get to Know tar, Linux's Original Packaging Format – The ...

Mar 19, 2020· Next, use the tar command with the create (-c option) to build a .tar file. Using a "*" grabs all the files and directories and puts them in a resultant tar file, in this case rob.tar. The file (-f option) tells tar what you want to call your archive. tar will silently do its …

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Help using tar to place files on LTO3 tape : DataHoarder

Anyone able to give me a hand writing files to an LTO3 tape? I've placed the tape back at the start using "mt -f /dev/st0 rewind". I write a directory of files to the tape using "tar -cvf /dev/nst0 coolfiles/". I write a 2nd directory of files to the tape using the same command "tar -cvf /dev/nst0 morecoolfiles/". I try view the files on the tape by putting it back to the start with "mt -f ...

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How to Archive Files in Linux Using tar, jar

Lists the table of contents of the tar file. x: Extracts files from the tar file. f: Specifies the archive file or tape device. The default tape device is /dev/rmt/0. If the name of the archive file is "-", the tar command reads from the standard input when reading from a tar archive or …

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Solaris tar command to backup data on tape device - nixCraft

Mar 22, 2005· Tar name come from Tape ARchiver. It is both a file format and the name of the program used to handle such file. Tar archive files have names ending in ".tar". If an archive is compressed, the compression program adds its own suffix as usual, resulting in filename endings like ".tar.Z", ".tar.gz", and ".tar.bz2". Tar […]

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GNU tar 1.34: 9.5 Many Archives on One Tape

Usually, non-rewinding tape device drivers will react to the close request issued by tar by first writing two tape marks after your archive, and by backspacing over one of these. So, if you remove the tape at that time from the tape drive, it is properly terminated. But if you write another file at the current position, the second tape mark ...

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GNU tar 1.34: 9.6 Using Multiple Tapes

Mar 24, 2021· The method tar uses to detect end of tape is not perfect, and fails on some operating systems or on some devices. If tar cannot detect the end of the tape itself, you can use '--tape-length' option to inform it about the capacity of the tape: '--tape-length=size[suf]' '-L size[suf]' Set maximum length of a volume. The suf, if given, specifies units in which size is expressed, e.g ...

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Copying files to and from tape or disk

lists all files on a disk or tape Format formats a disk or tape to prepare it for copying files Create copies files from your current directory to a disk or tape Type selects the archive file format: tar, cpio, or DOS Device specifies the address of the disk or tape drive for archiving

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How to Retrieve Files From a Tape (tar) (System ...

The names of the files extracted from the tape must exactly match the names of the files stored on the archive. If you have any doubts about the names or paths of the files, first list the files on the tape. See "How to List the Files on a Tape (tar)" for instructions.

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tape drives vs. tar with multiple directories

Dec 06, 2007· Hello, I have a little problem with backup & restoring files from tape drive. I am adding 3 directories to my tape, and it is OK: hades# tar -cvf /dev/nsa0 test test1 restore a test a test/level1 a test/myharddisk.img a test1 a test1/level1 a test1/myharddisk.img a test1/test.img a restore a restore/.cshrc a restore/.mail_aliases a restore/.login a restore/.rhosts a restore/.login_conf a ...

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GitHub - oss-mirror/tar

This distribution also includes 'rmt', the remote tape server. The 'mt' tape drive control program is in the GNU 'cpio' distribution. GNU 'tar' is derived from John Gilmore's public domain 'tar'. See file 'ABOUT-NLS' for how to customize this program to your language. See file 'COPYING' for copying conditions.

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