Subject: Re: SCSI tape/tar/mount_ados woes
To: L. Todd Masco <>
From: Markus Illenseer <markus@TechFak.Uni-Bielefeld.DE>
List: amiga
Date: 12/06/1994 12:16:11
On Dec 5,  2:34pm, L. Todd Masco wrote:
> 	- When I'm waiting for a SCSI tape I/O to complete, the entire
> 	machine (A3000 NetBSD 1.0) freezes until it completes.  This
> 	can be replicated with, for example, "mt -f /dev/nrst0 rewind"

 Normal, or at least until now. NetBSD-Amiga does not support disconnect
and reselection for tape drivers. Hence the entire system is busy (not 
entirly freezed, you can continue typing..).

> 	- Tar is very flakey about report the contents of the tape.  I
> 	wrote a tape earlier today of my whole system.  If I
> 	"tar tvf /dev/nrst0", it reports the first hundred or so files.
> 	A second "tar tvf /dev/nrst0" will get the rest.  This might not
> 	be a SCSI problem: the author of gnu tar has said he wouldn't
> 	recommend its use (though I've never had any problems on other
> 	systems with gnu tar).

 Hm, this looks rather like a problem with your tape.

> 	- Backing up /mnt (which is a mount_adosed partition) frequently
> 	fails because tar gets hung up on a single file on the AmigaDOS
> 	partition, seemingly going on forever.

 All I can guess here is, that the machine is quite busy with tape and
adosfs at the same time. adosfs is slow itself already.

Markus Illenseer