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Rob Hensley
*nix forums beginner
Joined: 06 Jun 2005
Posts: 2
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 Posted: Thu Jul 13, 2006 5:40 pm Post subject:
Re: Using tar to extract files from tape
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On Thu, 13 Jul 2006, Ron Johnson wrote:
| Quote: | gpgkeys: HTTP fetch error 7: couldn't connect: eof
Haines Brown wrote:
I asked this question before, but received no answer. Sorry to
post it again.
The question is a simple one: can I use tar to extract a file
from a tape backup made with a backup application?
Depends on the format. "Tape ARchive" most probably doesn't
understand proprietary formats...
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Yep, what program did you use to make the backup? For me I have a cron job
that runs nightly and uses tar to back things up. The command I use is...
tar --totals --label="System Backup For `date -d yesterday +%m-%d-%Y`"
-cvf /dev/tape /
Then when I want to restore something off the tape (say my home
directory), I'd do the following...
tar xvMf /dev/nst0 home/zoid
This will restore my home directory to whatever directory I am currently
in. Maybe give that a shot and see how it works.
| Quote: | On a sarge machine, I have a WangDAT 3100 tape drive from the
late 1990s. The tape from which I would like to recover certain
files was made back in 1998 with bru 2000/xbru.
[snip]
When I tried the tvf options for tar, I get the same result.
How does one extract the *xyz files from the tape?
You don't mention having tried Googling for BRU?
http://www.tolisgroup.com/products/
http://www.tolisgroup.com/about/contactus.html
--
Ron Johnson, Jr.
Jefferson LA USA
Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
--
To UNSUBSCRIBE, email to debian-user-REQUEST@lists.debian.org
with a subject of "unsubscribe". Trouble? Contact listmaster@lists.debian.org
------------ Output from gpg ------------
gpg: Signature made Thu Jul 13 12:07:02 2006 EDT using DSA key ID BDFB5E67
gpg: requesting key BDFB5E67 from hkp server keyserver.cryptnet.net
gpg: no valid OpenPGP data found.
gpg: Total number processed: 0
gpg: Can't check signature: public key not found
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--
Rob Hensley
hensleyrob@gmail.com
http://www.robhensley.com
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Justin Piszcz
*nix forums Guru Wannabe
Joined: 22 Feb 2005
Posts: 110
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| Posted: Thu Jul 13, 2006 4:10 pm Post subject:
Re: Using tar to extract files from tape
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On Thu, 13 Jul 2006, Alec Berryman wrote:
| Quote: | Haines Brown on 2006-07-13 09:48:02 -0400:
I tried:
# tar xvf /dev/st0 *.xyz
tar: /dev/st0: Cannot read: Input/output error
tar: At beginning of tape, quitting now
tar: Error is not recoverable: exiting now
When I tried the tvf options for tar, I get the same result.
How does one extract the *xyz files from the tape?
I don't know much about tape drives, but I would assume if you used dd
to copy the information on the tape to a file on your disk, you'd be
able to read it like a normal tar file.
Google this issue, you have to use kernel 2.2 or set the block size to |
64kb or some weird number to get the data off of the tape.
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Ron Johnson
*nix forums Guru
Joined: 19 Feb 2005
Posts: 1190
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| Posted: Thu Jul 13, 2006 4:10 pm Post subject:
Re: Using tar to extract files from tape
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Haines Brown wrote:
| Quote: | I asked this question before, but received no answer. Sorry to
post it again.
The question is a simple one: can I use tar to extract a file
from a tape backup made with a backup application?
|
Depends on the format. "Tape ARchive" most probably doesn't
understand proprietary formats...
| Quote: | On a sarge machine, I have a WangDAT 3100 tape drive from the
late 1990s. The tape from which I would like to recover certain
files was made back in 1998 with bru 2000/xbru.
[snip]
When I tried the tvf options for tar, I get the same result.
How does one extract the *xyz files from the tape?
|
You don't mention having tried Googling for BRU?
http://www.tolisgroup.com/products/
http://www.tolisgroup.com/about/contactus.html
- --
Ron Johnson, Jr.
Jefferson LA USA
Is "common sense" really valid?
For example, it is "common sense" to white-power racists that
whites are superior to blacks, and that those with brown skins
are mud people.
However, that "common sense" is obviously wrong.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.3 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org
iD8DBQFEtm+mS9HxQb37XmcRAix8AJ0bka3/3MOvVluYoeRpImYBKyVXFwCeNipl
yNatw5wUUlUMZsp3JQSZf7g=
=TNZs
-----END PGP SIGNATURE-----
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Alec Berryman
*nix forums beginner
Joined: 15 Mar 2005
Posts: 19
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| Posted: Thu Jul 13, 2006 2:30 pm Post subject:
Re: Using tar to extract files from tape
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Haines Brown on 2006-07-13 09:48:02 -0400:
| Quote: | I tried:
# tar xvf /dev/st0 *.xyz
tar: /dev/st0: Cannot read: Input/output error
tar: At beginning of tape, quitting now
tar: Error is not recoverable: exiting now
When I tried the tvf options for tar, I get the same result.
How does one extract the *xyz files from the tape?
|
I don't know much about tape drives, but I would assume if you used dd
to copy the information on the tape to a file on your disk, you'd be
able to read it like a normal tar file. |
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Haines Brown
*nix forums Guru Wannabe
Joined: 07 Mar 2005
Posts: 124
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| Posted: Thu Jul 13, 2006 2:20 pm Post subject:
Using tar to extract files from tape
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I asked this question before, but received no answer. Sorry to post it
again.
The question is a simple one: can I use tar to extract a file from a
tape backup made with a backup application?
On a sarge machine, I have a WangDAT 3100 tape drive from the late
1990s. The tape from which I would like to recover certain files was
made back in 1998 with bru 2000/xbru.
# mt -f /dev/st0 status
drive type = Generic SCSI-2 tape
drive status = 318767616
sense key error = 0
file number = -1
block number = -1
Tape block size 512 byte. Density code 0x13 (DDS (61000 bpi)).
Soft error count since last status = 0
General status bits on (1010000); ONLINE IM_REP_EN
I tried:
# tar xvf /dev/st0 *.xyz
tar: /dev/st0: Cannot read: Input/output error
tar: At beginning of tape, quitting now
tar: Error is not recoverable: exiting now
When I tried the tvf options for tar, I get the same result.
How does one extract the *xyz files from the tape?
--
Haines Brown
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