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

[Arjan Knepper]

Thanks for the suggestions, I tried it but it doesn't seem to make any 
difference, the problem still persists.
This morning the last two lines are the same as before:
   AST0: rezero command timeout resetting
   ATA2: resetting devices ..

Powercycle was needed.

Any other suggestion?

TIA
Arjan

N. Fung wrote:

> Errata to my previous message:  I should have said try putting these 
> lines into your /boot/loader.conf.local:
>
>   hw.ata.ata_dma=0
>   hw.ata.atapi_dma=0
>
> Reboot and see if it helps.
>
> N.
>
>
> N. Fung wrote:
>
>> 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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>>
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