[ale] Software RAID Problems

[Jason Vinson]

Well, I ran badblocks, which hung the box up after listing a small 
amount of output.  I just tested the drives by making an ext3 
filesystem on them with no errors, so the media at least appears to 
work, as well as the promise card channels.  Mkraid is being quite 
testy, so i may move my 2 channels from the mobo to the card, and use 
the onboards for the raid drives for a test.

The saga continues,
Jason


On Mar 1, 2004, at 9:38 AM, Jason Vinson wrote:

> Nevermind... badblocks is a command (duh!)
>
>
> On Mar 1, 2004, at 9:31 AM, Jason Vinson wrote:
>
>> Hi Danny,
>>
>> hdparm did report dma on, so i used d0 to turn it off on both drives, 
>> but it immediately hangs upon the mkraid if i do this, so i'm 
>> thinking that's not a good idea  ;)
>>
>> I am going to show my greenness here, but how do i run bad blocks on 
>> the drives?  Are you recommending using dd to write zero's to the 
>> platters?
>>
>> Jason
>>
>>
>> On Mar 1, 2004, at 7:24 AM, Danny Cox wrote:
>>
>>> Hi, Jason!
>>>
>>> On Sun, 2004-02-29 at 20:54, Jason Vinson wrote:
>>>> I looked in the BIOS and I don't see a setting for toggling DMA.
>>>>
>>>> But here's what I see from dmesg:
>>>>
>>>> (this is my onboard ide controller)
>>>> ide0: BM-DMA at 0xfc00-0xfc07, BIOS settings: hda:DMA, hdb:DMA
>>>> ide1: BM-DMA at 0xfc08-0xfc0f, BIOS settings: hdc:DMA, hdd:DMA
>>>>
>>>> (and these are the Promise IDE channels)
>>>> ide2: BM-DMA at 0xdf50-0xdf57, BIOS settings: hde:pio, hdf:pio
>>>> ide3: BM-DMA at 0xdf58-0xdf5f, BIOS settings: hdg:pio, hdh:pio
>>>>
>>>> hde and hdg are my potential RAID devices, and they are set to pio. 
>>>>  So
>>>> is pio conflicting with DMA somehow, or should this not be affected 
>>>> by
>>>> DMA at all? And isn't there a way to turn off DMA via hdparm, or 
>>>> will
>>>> that not work here?
>>>
>>> 	That's just the kernel reporting how the BIOS was set up.  There are
>>> probably messages just after that which show what else the driver set
>>> up.  Use "hdparm /dev/hde" and see if DMA is 0 or 1.  If necessary,
>>> sometime during bootup, add "hdparm -d1 /dev/hd{e,g}" to force DMA 
>>> on.
>>>
>>> 	But your previous post showed the drives complaining about errors.  
>>> On
>>> second glance, I see that 'dma_intr' is being called, confirming that
>>> DMA is being used on hde at least.  The UncorrectableError is the 
>>> main
>>> culprit here.  Try running badblocks on the whole drive (smoke 'em 
>>> if ya
>>> got 'em, it'll take a wee bit ;-), and see what it says.
>>>
>>> 	HTH!
>>>
>>> -- 
>>> kernel, n.: A part of an operating system that preserves the
>>> medieval traditions of sorcery and black art.
>>>
>>> Danny
>>>
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>>
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