Tape backup using a OnStream SC-30

[Jens Rehsack]

On 6/4/2003 12:33 PM, Mark Pearce wrote:
> Hi

Hi Mark,

> I am having trouble trying to backup data using an OnStream ADR drive.
> I have read the dump, sa, sr, tar man pages and have googled as well,
> but am still having no joy.
> 
> I have the following results:
> 
> dmesg:
> sa0 at ahc0 bus 0 target 4 lun 0
> sa0: <OnStream SC-30 1.05> Removable Sequential Access SCSI-2 device
> sa0: 10.000MB/s transfers (10.000MHz, offset 7)
> 
> 
> camcontrol devlist -v:
> scbus0 on ahc0 bus 0:
> <OnStream SC-30 1.05>              at scbus0 target 4 lun 0 (pass0,sa0)
> <  >                               at scbus0 target -1 lun -1 ()
> scbus-1 on xpt0 bus 0:
> <  >                               at scbus-1 target -1 lun -1 (xpt0)
> 
> 
> 
> [09:38 AM root at server dev]# /sbin/dump -0uan -f - /data1 | gzip -2 |dd
> of=/dev/sa0
> DUMP: Date of this level 0 dump: Wed Jun  4 09:44:07
> 2003
> DUMP: Date of last level 0 dump: the epoch
> 
> DUMP: Dumping /dev/ad0s1h (/data1) to standard output
> DUMP: mapping (Pass I) [regular files]
> dd: /dev/sa0: Invalid argument
> 
> [09:56 AM root at server dev]# tar c /data1
> tar: /dev/sa0: Cannot open: Invalid argument
> tar: Error is not recoverable: exiting now
> 
> 
> I am at my wits end, I seriously need to get this backup working.  I
> have found some reports that the SCSI adaptor, using the aha78xx driver
> coupled with this OnStream drive might be incompatable.
> 
> Either that or I am doing something wrong, please help.

No, you don't do sth. wrong. Onstream did but didn't tell it it's
customers before the buy. The produced streamers with an SCSI interface
but didn't respect the SCSI streaming access commands, but implement an
own command set.

You can do some things to get it work:
1) Port the linux driver to FreeBSD
2) Use vmware to run either linux or windows which may grant access
3) Use another streamer
4) Use another backup medium. just like cdr

Jens