topic Re: Tar error in Operating System - Linux

Tar error

Edwin Ruiz_2 — Fri, 07 Nov 2003 12:35:04 GMT

I am rying to create a tape with tar, but i have that error

# tar -cvf /dev/st0 /tmp
tar: /dev/st0: Cannot open: Read-only file system

Can u help me?

Re: Tar error

Huc_1 — Fri, 07 Nov 2003 12:43:12 GMT

I think the command is correct you probably have the write ring on

to find out if you tape is alright you could enter the command

#mt -f /dev/st0 status

J-P

Re: Tar error

Edwin Ruiz_2 — Fri, 07 Nov 2003 12:46:13 GMT

i have that error now

mt command not found.. i h ve redhat linux 7.2

thans

Re: Tar error

Huc_1 — Fri, 07 Nov 2003 12:53:12 GMT

Ruiz,

You should be able to see your tape by typing the following command

#cdrecord -scanbus

and also check the device protection they should be as follow

crw-rw---- 1 root disk 9, 0 Jan 30 2003 /dev/st0

please also check that you dont have the write notch (ring) set on so that the tape is mounted in read only !

never mind if you do not hane mt

J-P

Re: Tar error

Mark Grant — Fri, 07 Nov 2003 12:53:57 GMT

I don't think you should be getting that error if the tape is read only because it says you have a filesystem there unless that is a little buggling in Linux. You don't happen to have something mounted on /dev/st0 do you (df to check).

Re: Tar error

Edwin Ruiz_2 — Fri, 07 Nov 2003 13:03:16 GMT

I dont heve nothing mounted on it

Re: Tar error

Huc_1 — Fri, 07 Nov 2003 13:18:28 GMT

Ruiz,

the following command should return you some output

#dmesg | grep -i "st0"

also tell use what

# ls -l /dev/st0

return to your screen

It is funny Because Mark is right the message if this is a write ring problem would be different.

I am asking the above because I do not realy understand where the problem is

J-P

Re: Tar error

Gopu Bhaskar — Sun, 26 Dec 2004 06:13:08 GMT

The problem might be due to the tape being write protected. Check whether the tape has write protection. I got exactly the same error, due to the same reason.
HTH,
Gopu Bhaskar.