[nmglug] SiI PIR133

[Tim Emerick]

After much thought I've decided to just put in a spare 40 gig HD to address
the problem with slow writes on the Raided set.

While I did find a instructions on creating a RAID0 set at
http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/Software-RAID-HOWTO.html#ss6.3
I didn't see very readily how to remove RAID support from my system.

I installed RAID0 during the Sarge Install so I'm unsure where all the bits
and pieces are.  Since I'm using Raid0 (mirroring) I'm thinking that I could
just yank one of the drives...but how to remove the various raid references
such as my current raid partition mounting from /etc/md0.  Just mount it from
/etc/hde1 in /etc/fstab?

Tim

--- Mik <wa7bsz at yahoo.com> wrote:

> Well, this looks like one of those problems that other people had but
> nobody put down a solution, just the problem.  In this link:
> 
> http://www.ussg.iu.edu/hypermail/linux/kernel/0303.3/0179.html
> 
> Even Alan Cox replies.  The poster's original message has dmesg output
> like yours.  Even down to the:
> 
>  ide2: MMIO-DMA at 0xd4800000-0xd4800007, BIOS settings: hde:pio,
> hdf:pio
> > ide3: MMIO-DMA at 0xd4800008-0xd480000f, BIOS settings: hdg:pio,
> hdh:pio
> > hda: WDC 
> 
> I think someone asked about DMA being turned on.  Even in pio4 you
> should be able to get 10 MB/sec with a single drive.  To me it sounds
> like whatever it does to make sure it writes the data to both disks
> takes a long time.  If it was very efficient, it would write to both
> drives simultaneously.  If it wrote to one and then the other, that
> would take twice as long.  If it writes it and then reads it to make
> sure the write worked, it could get quite slow.  
> 
> I was hoping to find more information about how it actually works. 
> Doesn't look easy to find explanations about.  Good Luck.
> 
> This is in reply to:
> 
> Message: 1
> Date: Thu, 26 May 2005 17:57:45 -0700 (PDT)
> From: Tim Emerick <timothyemerick at yahoo.com>
> Subject: Re: [nmglug] What is the model number of the SiL card?
> To: "NMGLUG.org mailing list" <nmglug at nmglug.org>
> Message-ID: <20050527005745.78456.qmail at web40911.mail.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
> 
> Here is the web page for the actual card:
> 
> http://www.koutech.com/proddetail.asp?linenumber=105
> 
> Here's some dmesg stuff:
> 
> SiI680: IDE controller at PCI slot 0000:02:03.0
> ACPI: PCI interrupt 0000:02:03.0[A] -> GSI 11 (level, low) -> IRQ 11
> SiI680: chipset revision 2
> SiI680: BASE CLOCK == 133
> SiI680: 100% native mode on irq 11
>     ide2: MMIO-DMA , BIOS settings: hde:pio, hdf:pio
>     ide3: MMIO-DMA , BIOS settings: hdg:pio, hdh:pio
> hde: WDC WD800BB-00CCB0, ATA DISK drive
> ide2 at 0xd08b1080-0xd08b1087,0xd08b108a on irq 11
> hde: max request size: 64KiB
> hde: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=65535/16/63,
> UDMA(100)
>  /dev/ide/host2/bus0/target0/lun0: p1
> hdg: WDC WD800BB-00CCB0, ATA DISK drive
> ide3 at 0xd08b10c0-0xd08b10c7,0xd08b10ca on irq 11
> hdg: max request size: 64KiB
> hdg: 156301488 sectors (80026 MB) w/2048KiB Cache, CHS=65535/16/63,
> UDMA(100)
>  /dev/ide/host2/bus1/target0/lun0: p1
> PDC20265: IDE controller at PCI slot 0000:02:06.0
> ACPI: PCI interrupt 0000:02:06.0[A] -> GSI 10 (level, low) -> IRQ 10
> PDC20265: chipset revision 2
> PDC20265: 100% native mode on irq 10
> PDC20265: (U)DMA Burst Bit ENABLED Primary PCI Mode Secondary PCI Mode.
>     ide4: BM-DMA at 0xcc00-0xcc07, BIOS settings: hdi:pio, hdj:pio
>     ide5: BM-DMA at 0xcc08-0xcc0f, BIOS settings: hdk:pio, hdl:pio
> 
> 
> Tim
> 
> 
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