Restoring Data using cpio -icvdumC51200 "xxxx/*" </dev/st0

Lionelo · 11-15-2017, 02:34 AM

Backup were done using a Quantum Ultrium3 tape drive.
Restore were done using the same device.
We replaced the Quantum Ultrium3 with a Tandberg Ultrium3
We cannot restore date that was done using the Quantum
The backup command is the same for both devices
find . -print | cpio -ocvC51200 > /dev/nst0
and the restore command is the same for both devices
cpio -icvdumC51200 "xxxx/*" </dev/st0

Any ideas
Thanks
Lionel

!!! · 11-15-2017, 03:33 AM

Welcome to LQ. What is the exact error (msg)??? OS?

Might the new drive be st1? ls -l /dev/st*

Lionelo · 11-15-2017, 03:45 AM

I dont get a error msg the restore seems to hang
The tape I'm trying to retore was backup up using /dev/st0
The backups to the new drive is using /dev/st0

Lionelo · 11-15-2017, 03:57 AM

I dont get a error msg the restore seems to hang
The tape I'm trying to retore was backup up using /dev/st0
The backups to the new drive is using /dev/st0

michaelk · 11-15-2017, 09:27 AM

One method I have used in the past to "test" the basic functionality of a tape drive is via the dd command.

Code:

Write to tape
dd if=/some/file of=/dev/st0

Read from tape
dd if=/dev/st0 of=/some/file1

If there are no errors and file=file1 then I would assume that it is working correctly.

Lionelo · 11-15-2017, 11:28 PM

Thanks for the reply Michael
The current backups and retores on the Tandberg are working fine
My problem is I need to restore a file from a tape that was backed up using a Quantum drive and using the same cpio command

!!! · 11-17-2017, 01:01 AM

Ah: 'hang'!!! Use `strace` [-f -o mylog -p PID#] [cmd]
to see what's it's doing.