Questions tagged [tape]
Questions about tape drives, robots, & media. Includes LTO, DAT, etc. Also consider tags such as /backup or for the backup system(s) you're using (/bacula, /amanda, /tar, etc.)
16
questions with no upvoted or accepted answers
3
votes
0
answers
328
views
Anyone know where to change this "bufsize" value? ( st / mt LTO tape drives )
I am trying to speed test some new LTO tape drives but cannot seem to send data to the tape via dd for any block size above 327,680 bytes. I must have a 1M blocksize for my application.
[root@host]# ...
- 31
2
votes
0
answers
311
views
Alternatives to compressed tarballs
I am reading/writing data from/to tapes using Debian and recently ran into an issue where I needed to figure out the size of the stored data stream, i.e. the data actually written to the tape (see ...
- 361
2
votes
1
answer
552
views
Can I create a tape backup that uses Microsoft Tape Format (MTF) on Linux?
Outside of LTFS, the Microsoft Tape Format seems to be the closest to a widely supported format when it comes to older tape format that don't support LTFS (In my case, Ultrium 3 and 4).
However, ...
- 410
2
votes
0
answers
2k
views
Question about blocks sizes on Tape vs. Tar
I have an HP LTO-4 drive that I've been using for backups for a while now and everything works very well, but I have a question on how the Tar blocking factor works and what is actually written to ...
- 75
2
votes
0
answers
6k
views
LTO tape drive: "/dev/st0: Inappropriate ioctl for device"
I can write to the tape drive (tar -cf /dev/st0 file) and retrieve files from the tape
drive (tar xvf /dev/st0 file). But the problem is when I attempt to use the 'mt' command to check the status of ...
- 324
1
vote
0
answers
553
views
Extract a list of files from tape with tar
My goal is to extract only the files in a list from an lto5 tape using tar. The data was originally written to the tape using tar as well. I am able to accomplish this task from a .tgz file by doing:
...
- 123
1
vote
0
answers
81
views
What is the simplest way to send data to a tape library?
I am looking for the simplest (feasible) way to push data away on a tape library. This is for archiving finalized, immutable datasets that only need to be retrieved in case of a catastrophic failure ...
- 253
1
vote
0
answers
324
views
Monitoring the activity of tape drive with SCSI generic driver (sg)
I would like to monitor statistics (transfer rate, byte/sec) for each LTO tape drive connected to Linux system. I understand that tapestat command can exactly do this, but this shows the activity of ...
- 136
1
vote
0
answers
196
views
find out how many (posix) tar header blocks a file will require
Posix (pax) tar uses extended headers to allow long filenames etc..
Is there a way to find out how many 512 byte blocks will be used for the header for a particular file (before actually running the ...
- 205
1
vote
1
answer
381
views
Determine capacity of tape drive
Is there a way via mtx or mt, or else via some value stored in /sys or /proc, to know the capacity of a tape in a tape drive (such as a LTO7 cassette in a DELL TL4000)?
I have attempted mt with the ...
- 837
1
vote
1
answer
299
views
fsf and bfs showing different output
I am using mt utility to write a data on LTO 5,Data stored at sequentially on the tape and file will be identified by File 1, 2 ,3
I want to read the file 3 for that I am using fsf and bsf but I am ...
0
votes
1
answer
53
views
Archiving stdout to multiple tapes
I have large files which are generated on the fly to stdout, one every 24hours. I would like to archive these files progressively on tapes, ideally in a single archive which potentially spans multiple ...
- 1
0
votes
0
answers
541
views
How can I know how many files are stored in a tape?
I have installed an SCSI DDS4 tape drive and I have read:
https://www.freebsd.org/doc/el_GR.ISO8859-7/books/handbook/backups-tapebackups.html
and
https://docs.freebsd.org/doc/2.1.5-RELEASE/usr/...
- 609
0
votes
1
answer
102
views
Anyone with information on tape format used with early SunOS2.0 or how to get the data out
Having located, downloaded the .tgz and uncompressed it, I am now faced with three directories tape1,tape2, and tape3 with 10 or numbered bits.
Using
od -c
and
vi :%!xxd
did not produce anything ...
0
votes
2
answers
271
views
dd command - can it show record size when reading from tape
I have data on tape with a variable block size. when reading these tapes I can use tcopy /dev/st0 (for example) to show the record size as it reads from tape.
Ultimately I copy the data from tape ...
0
votes
0
answers
619
views
Linux: create multivolume tape encrypted with ssl..is possible?
I want to backup my data on tapes.
I had a Ultrium LTO6
Make an encrypted backup with SINGLE tape works fine
tar cpMf - /home/ | openssl enc -e -aes128 -salt -pass file:file.password |(pv -p --...
- 12.9k