IDE ATA ATAPI tape drive (AST0) causes system to stop responding.

[N. Fung]

Arjan Knepper wrote:
> Hello,
> 
> Recently I installed a Dell PowerEdge 600 SC with FreeBSD 
> 4.8-RELEASE-p13 for a client. This system has a Seagate STT20000A IDE 
> tape drive which causes the system to stop responding when using the 
> tape drive for backups. A hard powercycle is needed to get the system 
> running  again.

I had backup and gunzip problems with ATA on my PE600SC too.  First, try 
putting:

   hw.ata.ata_dma=0

into /boot/loader.conf.local

first.

That solved my ATA related problem on the PE600SC.

N.

> 
> Today the last command issued is:
>  mt fsf 1
> 
> The last two lines on the console are:
> 
> AST0: rezero command timeout resetting
> ATA2: resetting devices ..
> 
> But it also happend while writing or reading to or from the backup tape
> 
> I have googled around and tried various suggestions but with no succes.
> 
> I also tried FreeBSD-STABLE but problem persists.
> 
> Does anyone have a clue what might be wrong?
> 
> Thanks
> Arjan
> 
> dmesg output:
> 
>> atapci0: <Generic PCI ATA controller> port 
>> 0x900-0x90f,0x36c-0x36f,0x168-0x16f,0x3ec-0x3ef,0x1e8-0x1ef irq 11 at 
>> device 14.0
>> on pci0
>> ata2: at 0x1e8 on atapci0
>> ata3: at 0x168 on atapci0
>> atapci1: <Generic PCI ATA controller> port 
>> 0x8b0-0x8bf,0x374-0x377,0x170-0x177,0x3f4-0x3f7,0x1f0-0x1f7 at device 
>> 15.1 on pci0
>> ata0: at 0x1f0 irq 14 on atapci1
>> ata1: at 0x170 irq 15 on atapci1
> 
> 
>> acd0: DVD-ROM <LITEON DVD-ROM LTD163> at ata2-master PIO4
>> ast0: TAPE <Seagate STT20000A> at ata2-slave PIO4
> 
> 
> sysctl for ata
> 
>> hw.ata.ata_dma: 1
>> hw.ata.wc: 0
>> hw.ata.tags: 0
>> hw.ata.atapi_dma: 1
> 
> 
> kernel config
> 
>> # ATA and ATAPI devices
>> device          ata
>> device          atadisk                 # ATA disk drives
>> device          atapicd                 # ATAPI CDROM drives
>> device          atapifd                 # ATAPI floppy drives
>> device          atapist                 # ATAPI tape drives
> 
> 
> 
> 
> 
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