9 More Discussions You Might Find Interesting
1. AIX
Hi,
I have taken a backup of a directory on my tape in using below command
cd /backup
find * -print|backup -ivf '/dev/rmt0' '-U' |tee -a /syslogs/backup.log and output appear in below format.
a 0 rman-before-08032014
a 58403323904... (2 Replies)
Discussion started by: m_raheelahmed
2 Replies
2. AIX
Hi,
We are taking our filesystem backup having size of 1.3 TB on LTO5 catridges using the following command
find * -print|backup -ivf '/dev/rmt0' '-U'
i.e backup byname and it took about 6.5 Hours to complete When we are listing same tape contents using the following command
restore... (1 Reply)
Discussion started by: m_raheelahmed
1 Replies
3. Solaris
Hi all,
i would like to view the contents of Tape on Solaris 10
i issued the following command
tar -tvf /dev/rmt/0m
i'm getting the following error
bash-3.00# tar -tvf /dev/rmt/1m
tar: tape read error
by the way the reference to the command is on sun's wiki
any alternatives
Thanks in... (3 Replies)
Discussion started by: h@foorsa.biz
3 Replies
4. UNIX for Dummies Questions & Answers
Hi,
I have a HP SURESTORE 40 tape drive. Several archives are stored on it using DUMP. I have several volumes stored on the tape...
If I issue restore -rf /dev/st0 will it restore just the arhcive that the tape reader is currently on or will it restore all of them?
Thanks, (3 Replies)
Discussion started by: mojoman
3 Replies
5. UNIX for Advanced & Expert Users
I've got a backuptape in cpio format that was accidentally overwritten with a very small batch file. As I assume that the cpio header has been overwritten, I cannot extract files from the backup in the conventional manner:
( cpio -itv </dev/rct0
cpio: this is not a cpio file, bad header)
... (0 Replies)
Discussion started by: mart4179
0 Replies
6. AIX
I'm attempting to read a tape in a 4mm drive (AIX 4.3) using the following command...
tar tvf /dev/rmt0
...and I keep getting the following error message:
tar: 0511-193 An error occurred while reading from the media.
There is not enough memory available now.
I've googled this error... (2 Replies)
Discussion started by: tdpearson
2 Replies
7. AIX
Hello all,
I have just installed an HP dat72 external tape drive to an IBM 275 Intellistation (AIX 5L). It was installed as an Other SCSI Tape Drive (rmt1). I am using the Web Based System Manager at this point to do an initial backup
of a journaled file system. I am getting an error and am... (1 Reply)
Discussion started by: joeweisser
1 Replies
8. UNIX for Dummies Questions & Answers
I have been attempting to read a DLT tape, but encountered problems. I have applied patches from SUN that 'resolve' known problems with tape reading etc...but still the error!
Techsupport reckon that the data/tape is corrupt. I would like to think they aren't.
Are there any issues with... (10 Replies)
Discussion started by: colesy
10 Replies
9. UNIX for Dummies Questions & Answers
Hi all,
I am attempting to read tar images from a DLT tape, and have recieved an error, which i don't know:
tar: blocksize = 8
tar: directory checksum error
I have been able to read from other tapes, using the same command (tar -tvf /devicename) but this time i have an... (3 Replies)
Discussion started by: colesy
3 Replies
mt(1) General Commands Manual mt(1)
Name
mt - magnetic tape manipulating program
Syntax
mt [-f tapename] command [count]
Description
The command permits the operation of a magnetic tape drive.
Options
The -f flag option uses the specified tape device (next argument) in place of either that tape device defined by your TAPE environment
variable (.login or .profile) or /dev/nrmt0h.
Some operations may be performed multiple times by specifying count. By default, performs the requested operation once.
The command argument defines the operation to be performed. Only as many characters as are required to uniquely identify a command need be
specified.
The following is a list of commands:
bsf Backspace count files.
bsr Backspace count records.
cache Allows to use the cache buffer on a tape drive that has the cache buffer feature.
clhrdsf Clear hardware/software problem. Works with tape drives which use the TMSCP tape controller interface This command is
restricted to root access only.
clserex Clear serious exception. Works with tape drives which use the TMSCP tape controller interface
clsub Clear subsystem. Works with tape drives which use the TMSCP tape controller interface This command is restricted to
root access only.
eof, weof Write count end-of-file marks at the current position on the tape.
eotdis Disable end-of-tape detection. When the end of tape is reached, the tape will run off the reel. Only the superuser
can issue this command. The command remains in effect for the device until end-of-tape detection is enabled with the
eoten command.
eoten Enable end-of-tape detection. When the end-of-tape markers are reached, the tape is halted on the reel, between the
two end-of-tape markers. Only the superuser can issue this command. The command remains in effect for the device
until end-of-tape detection is disabled with the eotdis command. This is the default mode after a system boot.
fsf Forward-space count files.
fsr Forward-space count records.
nocache Disables the use of the cache buffer for any tape drive that has the cache buffer feature.
offline, rewoffl Rewind the tape and place the tape unit off-line.
retension Retensions the tape. Retension means moving the tape one complete pass between EOT and BOT.
rewind Rewind the tape.
status Print status information about the tape unit.
Examples
This example shows how to rewind the tape
mt -f /dev/rmt0l rewind
This example shows how to backspace the tape nmt1h three files:
mt -f /dev/nrmt1h bsf 3
This example shows how to write two end-of-file marks at the current position on tape nmt6h:
mt -f /dev/nrmt6h eof 2
Return Values
In shell scripts, returns a 0 exit status when the operation(s) were successful, 1 if the command was unrecognized, and 2 if an operation
failed.
Files
/dev/rmt?h or /dev/rmt?l
Raw magnetic tape interface with rewind when closed
/dev/nmt?h or /dev/nmt?l
Raw magnetic tape interface with no rewind when closed
See Also
dd(1), tar(1), ioctl(2), mtio(4), tms(4), environ(7)
mt(1)