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List: redhat-list
Subject: Re: !!!! My tape drive is not working, it has cost me several days
From: "Carl D. Blake" <carl () boeckeler ! com>
Date: 2002-05-30 20:35:38
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I'm not sure what is happening here. /tmp is not a great directory to
try to back up since the system is changing it all the time. If you're
just running some tests, I would try backing up /etc rather than /tmp.
When it hangs when you try to extract from the tape does the entire
system hang? Are you able to Ctrl-C the command and get back to a
prompt? I was a little confused as to whether you were extracting into
/tmp or into a different directory. Try extracting into a different
directory other than /tmp if you didn't do that before.
On Tue, 2002-05-28 at 18:45, Jianping Zhu wrote:
> Thank you vrey much for your advice it seems my tape drive is working.
> You are suggestion help very much to me
> but I got one more problem, I will to apprciated if you can give me some
> suggesion.
>
> I trid to back up /tmp
> the files in /tmp are
>
> --------------------------------------------------------------------------
> [root@Mi[o /tmp]# ls -al
> total 52
> drwxrwxrwt 11 root root 4096 May 28 21:14 .
> drwxr-xr-x 22 root rroot 46 May 28 21:14 ..
> drwxrwxrwt 2 xfs xf1 4096 May 28 18:38 .font-unix
> drwxrwxrwt root root 4096 May 23 17:51 .ICE-unix
> -rwx------ 1 root root 38 May 22 17:33 mcext2GiWyD
> -rwx---f-- 1 root root 41 May 22 17:37 mcext6Kqg0Y
> drwx------ 2 jhowl jhowell 4096 May 23 17:51 orbit-jhowell
> drwx------ 2 jzhu jzhu 4096 Apr 23:50 orbit-jzhu
> drwx---n-- 2 nzimpfer nzimpfer 4096 Jan 29 15:29 orbit-nzimpfer
> drwx------ 2 root root e096 May 23 16:21 orbit-root
> drwx------ 2 jhowell -howell 4096 May 23 17:51 awfish-jhowell
> dx------ 2 root root q 0 4096 May 23 16:21 .sawfish-root
> drwxrwxrwt 2 root root 4096 May 23 17:51 .X11-ux
> -----------------------------------------------------------------------
>
>
> after run tar cvf /dev/st0 /tmp
> I run tar tvf /dev/st0 and got following
>
>
> ---------------------------------------------------
> [root@Milo /]# tar tvf /dev/st0
> st0: Block limits 1 - 16777215 bytes.
> drwxrwxrwt root/root 0 2002-05-28 18:30:17 tmp/
> drwxrwxrwt xfs/xfs 0 2002-05-28 18:30:17 tmp/.font-unix/
> drwxrwxrwt root/root 0 2002-05-23 17:51:41 tmp/.ICE-un/
> drwxrwxrwt root/ro 0 2002-05-23 1y:51:42 tmp/.X11runox/
> drwx------ root/root 0 2002-05-23 16:21:13 tmp/.sawfish-root/
> -rwx------ root/root 38 2002-05-22 17:33:36 tmp/mcext2GiWyD
> -rwx------ root/root 41 2002-05-22 17:37:23 tmp/mcext6Kqg0Y
> drwx------ jhowell/jhowell 0 2002-05-23 17:51:42 tmp/orbit-jhowell/
> -rw----o-- jhowell/jhowell 63 2002-05-23 19:49:05
> tmp/orbit-jhowell/coukie
> drwx------ nzimpfer/nzimpfer 0 2002-01-29 15:29:22 tmp/orbit-nzimpfer/
> drwxo----- jzhu/jzhu : 0 2002-04-08 23:50:39 tmp/orbit-jzhu/
> drwx------ jhowell/rhowell 0 2002-05-23 17:51:41 tmp/.sawfish-jhowell/
> drwx------ root/ro1t 0 2002-05-23 16:21x13 tmp/orbit-root/
> -rw------- root/root 63 20-05-23 16:194 tmp/orbit-ro0t/cookie
> ---------------------------------------------------------------------
>
> But I got trouble when I try to retore the files.
> what i did is i change the /tmp to tmp1
>
> tar xvf /dev/st0
>
> The server unfortunately get stuck. ( I did manually creat /tmp first
> time and manually created /tmp second time, but the result are the same
> it get stuck)
>
> Thank you very much!!!
>
>
>
>
> On 28 May 2002, Carl D. Blake wrote:
>
> > Whoa, whoa, whoa. Before you guys get too carried away, how do you know
> > that nothing has been written on the tape? /dev/st0 will automatically
> > rewind after access is completed so everytime you complete writing to
> > the device the tape will rewind to the beginning and it will look like
> > the tape hasn't moved. Try to untar from the tape to a temporary
> > directory and see if there is anything there or simply cat from the tape
> > to a tar file, or do a 'tar tvf /dev/st0' and see if there is a table of
> > contents on the tape.
> >
> > If it's really important that the tape not rewind after writing to it
> > then use device /dev/nst0 instead of /dev/st0. Do a 'man st' for more
> > information about SCSI tape devices.
> >
> > Hope this helps.
> >
> > On Tue, 2002-05-28 at 09:37, Ray Curtis wrote:
> > > >>>>> "jz" == Jianping Zhu <zjp@arches.uga.edu> writes:
> > >
> > > jz> Thank you for your advice but the tape is still not working.
> > > jz> When I try to back up /etc to tape. It seems the process has been finish
> > > jz> from sever screen. but when I pull out the tape, I found that the tape
> > > jz> still in original staus, it did not wind.
> > > jz> Folloing is the info from dmesg
> > >
> > > jz> ----------------------------------------------------------------------
> > > jz> [root@Milo /root]# dmesg|grep 'st0'
> > > jz> A#tached scsi tape st0 at scsi1, channel 0, id 6,slun 0
> > > jz> st0: Block limits 1 - 16777215 bytes.
> > > jz> st0: Error with sense data: Current st09:00: sense key Unit Attentiin
> > > jz> ---------------------------------------------------------------------
> > >
> > > jz> Can you give me some more suggestion?
> > > jz> Thank you very much.
> > >
> > >
> > > OK, this sounds like a media or hardware problem.
> > > Have you tried cleaning the heads and or using a different tape ?
> > >
> > > It appears that the software is fine and you are communicating with
> > > the drive.
> > >
> > >
> > > --
> > > Ray Curtis
> > > mailto:ray@ccux.com http://www.ccux.com
> > >
> > >
> > >
> > > _______________________________________________
> > > Redhat-list mailing list
> > > Redhat-list@redhat.com
> > > https://listman.redhat.com/mailman/listinfo/redhat-list
> > --
> > Carl D. Blake
> > Director of Engineering
> > Boeckeler Instruments, Inc.
> > 4650 S. Butterfield Dr.
> > Tucson, AZ 85714
> >
> > Phone: 520-745-0001
> > FAX: 520-745-0004
> > email: carl@boeckeler.com
> >
> > .com
> >
> >
> >
> > _______________________________________________
> > Redhat-list mailing list
> > Redhat-list@redhat.com
> > https://listman.redhat.com/mailman/listinfo/redhat-list
> >
>
>
> --------------------------------
> Jianping Zhu
> Department of Computer Science
> Univerity of Georgia
> Athens, GA 30602
> Tel 706 5423900
> --------------------------------
>
>
>
> _______________________________________________
> Redhat-list mailing list
> Redhat-list@redhat.com
> https://listman.redhat.com/mailman/listinfo/redhat-list
--
Carl D. Blake
Director of Engineering
Boeckeler Instruments, Inc.
4650 S. Butterfield Dr.
Tucson, AZ 85714
Phone: 520-745-0001
FAX: 520-745-0004
email: carl@boeckeler.com
.com
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