fbackup error

[M.Thomas]

i know i have used /dev/rmt/0m to backup all thses days. now it says it is not a valid device. if i try to give /dev/rmt/0mn same result. ioscan -fnC tape looks fine. what could be the issue?

Thanks

Thomas

[Robert-Jan Goossens]

Hi Thomas,

Could you post the output of

# ll /dev/rmt/0mn

Regards,
Robert-Jan

[M.Thomas]

here it is

crw-rw-rw- 2 bin bin 205 0x010040 Jan 26 12:04 /dev/rmt/0mn

crw-rw-rw- 2 bin bin 205 0x010000 Jan 24 17:18 /dev/rmt/0m

Thanks

Thomas

[ArvindMenon]

Hi,

Could you paste the excat error message.

Regards
Arvind

[A. Clay Stephenson]

Ioscan is hardly a definitive test for a device. I would try doing a tar, cpio, or dd to the tape drive. If those fail, chances are that you have hardware problems. Of course, you may be doing soomething as simple as trying to write to a write-protected medium. The exact error message of dd is probably the most direct diagnostic you have. It would also be helpful to "echo ${?}" immediately after dd finishes as that will be the exit status of the command and should be the errno value of the last failed system call.

[M.Thomas]

i did dd if=/etc/hosts of=/dev/rmt/0m and it comes back with /dev/rmt/0m no such device or address
dd:cannot create /dev/rmt/0m

Thanks

Thomas

[Reshma Malusare]

Hi Thomas,
Read following forums:

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=1063845

[DCE]

You could try rmsf -H

to remove the devicefiles

Then insf -H

to recreate them

[Bill Hassell · Accepted solution]

No such device...

indicates that tyhe tape drive is not working right. Search for all tape drives with:

ioscan -fnC tape

then ask for status with:

mt -f /dev/rmt/... status

No response indicates bad cable, connectors, no terminators, bad mapping on a SAN system, etc