cpio: /dev/tty: No such device or address

dougbourne · 10-08-2008, 12:59 PM

Hi,
I have a server running samba server and i need perform a backup to DAT tape using cpio.

My script run this command:

Code:

ERRFILE="/var/log/backup/backup.log"

/usr/bin/find /u01/public /home /u02/quality /u01/C.P.D -print |/bin/cpio -ovBH tar -O /dev/st0 >> $ERRFILE 2>&1

The backup starts normally, but at "random" time it fails.
on $ERRFILE i got this message:
cpio: /dev/tty: No such device or address

Tested Possibilities (and false):
1 - Tape problem
2 - Tape drive problem
3 - not enough space on tape
4 - removed redirect of stderr to test output problem

I really don't know whats happening...

someone have an idea???
thanks

trickykid · 10-08-2008, 01:37 PM

That error would indicate to me that you're backing up the /dev directory.

dougbourne · 10-08-2008, 01:46 PM

Quote:

Originally Posted by trickykid

That error would indicate to me that you're backing up the /dev directory.

yeap, but /dev/ is out of setlist.

I think this is an problem with STDOUT or STDERR output, but i remove all redirect of output and still got this error.
This is the only way relation with /dev/tty (the stdout) i think...

jschiwal · 10-08-2008, 02:52 PM

One thing I noticed from your command is that you used the -B option but didn't set the block size. You might also want to use the "-0" option for cpio and the "-print0" instead of "-print" for the find command. An odd filename may be broken up or a file may be a symbolic link to /dev/tty.

dougbourne · 10-08-2008, 03:51 PM

Quote:

Originally Posted by jschiwal

One thing I noticed from your command is that you used the -B option but didn't set the block size. You might also want to use the "-0" option for cpio and the "-print0" instead of "-print" for the find command. An odd filename may be broken up or a file may be a symbolic link to /dev/tty.

Hi jschiwal,
But the -B param set the block size to 5120bytes (vide man pages).
The default value is 512bytes.

thanks!

jschiwal · 10-09-2008, 01:01 AM

Sorry. I guess you are correct. I though you needed to explicitly give the block size.

Code:

-B'
     Set the I/O block size to 5120 bytes.  Initially the block size is
     512 bytes.

`--block-size=BLOCK-SIZE'
     Set the I/O block size to BLOCK-SIZE * 512 bytes.

I thought that -B was synonymous with --block-size=.

Have you tried the -print0 option? Also, try running the find command by itself or pipe the output through grep looking for 'tty'.
You could add "-type c" to find if a device file is found in the search.

dougbourne · 10-09-2008, 12:28 PM

Quote:

Originally Posted by jschiwal

Sorry. I guess you are correct. I though you needed to explicitly give the block size.

Code:

-B'
     Set the I/O block size to 5120 bytes.  Initially the block size is
     512 bytes.

`--block-size=BLOCK-SIZE'
     Set the I/O block size to BLOCK-SIZE * 512 bytes.

I thought that -B was synonymous with --block-size=.

Have you tried the -print0 option? Also, try running the find command by itself or pipe the output through grep looking for 'tty'.
You could add "-type c" to find if a device file is found in the search.

Hi, thanks for your reply.
there is no device or any reference on files listed to backup job.
i'm loosing my mind with this issue.

thanks