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pow
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PostPosted: Tue Mar 30, 2004 3:02 pm    Post subject: some problems Reply with quote

Hello,
I have some problems with my new amd64 system. The sata raid controllers of my board are making problems. The kernel is not detecting the hardware raid. I have googled a bit around it seems that it is not supported at the moment. I need hardware raid because I have a dual boot system or is there a way to use software raid and windows ? The next thing is the the disc performance is really bad about 20 MB/s with both sata drivers sata_promise and sata_via . thx for help


Here are some hardware information:
board: asus k8v se
kernel: 2.6.4-gentoo-r1
lscpi:
0000:00:00.0 Host bridge: VIA Technologies, Inc. VT8385 [K8T800 AGP] Host Bridge (rev 01)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT8237 PCI bridge [K8T800 South]
0000:00:08.0 RAID bus controller: Promise Technology, Inc.: Unknown device 3373 (rev 02)
0000:00:0a.0 Ethernet controller: Marvell Yukon Gigabit Ethernet 10/100/1000Base-T Adapter (rev 13)
0000:00:0f.0 RAID bus controller: VIA Technologies, Inc.: Unknown device 3149 (rev 80)
0000:00:0f.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C/VT8235 PIPC Bus Master IDE (rev 06)
0000:00:10.0 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 81)
0000:00:10.1 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 81)
0000:00:10.2 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 81)
0000:00:10.3 USB Controller: VIA Technologies, Inc. VT6202 [USB 2.0 controller] (rev 81)
0000:00:10.4 USB Controller: VIA Technologies, Inc. USB 2.0 (rev 86)
0000:00:11.0 ISA bridge: VIA Technologies, Inc. VT8237 ISA bridge [K8T800 South]
0000:00:11.5 Multimedia audio controller: VIA Technologies, Inc. VT8233/A/8235/8237 AC97 Audio Controller (rev 60)
0000:00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 NorthBridge
0000:01:00.0 VGA compatible controller: nVidia Corporation NV11 [GeForce2 MX/MX 400] (rev a1)

.config:
http://unigate.homeip.net/files/config.gz
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pow
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PostPosted: Wed Mar 31, 2004 12:06 pm    Post subject: Reply with quote

I have managed to get ist working with md and the generic ide driver but it's a bit slow i think(25-35MB/s) but with the live cd i get 50 MB/s per disc. At the moment i'm using 2.6.5-rc3-mm2 and the newest libata patch. The live cd has 2.6.3-gentoo-r2-up as kernel. Any ideas how to tune it a bit ?
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Corona688
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PostPosted: Wed Mar 31, 2004 1:40 pm    Post subject: Reply with quote

You're not going to get hardware raid with an onboard raid controller, pretty much by definition, you'll only get software raid.
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Little Nemo
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PostPosted: Wed Mar 31, 2004 4:38 pm    Post subject: Reply with quote

pow wrote:
I have managed to get ist working with md and the generic ide driver but it's a bit slow i think(25-35MB/s) but with the live cd i get 50 MB/s per disc. At the moment i'm using 2.6.5-rc3-mm2 and the newest libata patch. The live cd has 2.6.3-gentoo-r2-up as kernel. Any ideas how to tune it a bit ?


Wise decision. All this onboard RAID controller stuff is basically cheating. Unlike with true RAID controllers, you need software to make it work. md has the advantage of being independent from controllers. You can combine SATA, ATA, SCSI disks that are connected through several controllers (which may also increase speed, depending on the setup).

Which RAID level are you using? In order to improve performance you should read the Software RAID HOWTO first.
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pow
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PostPosted: Wed Mar 31, 2004 7:28 pm    Post subject: Reply with quote

I'm using raid0 with two 160 GB Hitachi discs but I have some problems because I want to use the raid as boot drive together with windows. At the moment it's hard to configure it and the performance is more badly than the single drives and partition magic says me a error about the partition but I see no errors maybe the chunk size is bogus in the bios I have set the chunk size to 64. Here is my dmsetup configuration:

fdisk -l:
Code:

Disk /dev/mapper/raid0: 329.3 GB, 329393111040 bytes
255 heads, 63 sectors/track, 40046 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

             Device Boot      Start         End      Blocks   Id  System
/dev/mapper/raid0p1               2       12751   102414375    f  W95 Ext'd (LBA)
/dev/mapper/raid0p2           12752       40046   219247087+  83  Linux
/dev/mapper/raid0p5               2        5101    40965718+   b  W95 FAT32
/dev/mapper/raid0p6            5102       10201    40965718+   7  HPFS/NTFS
/dev/mapper/raid0p7           10202       12749    20466778+   7  HPFS/NTFS


[code]
echo -ne '0 643345920 striped 2 128 /dev/hde 0 /dev/hdg 0' | dmsetup create raid0
echo -ne '0 438494175 linear /dev/mapper/raid0 204844815' | dmsetup create raid0p2
echo -ne '0 81931437 linear /dev/mapper/raid0 16128' | dmsetup create raid0p5
echo -ne '0 81931437 linear /dev/mapper/raid0 81947628' | dmsetup create raid0p6
echo -ne '0 40965687 linear /dev/mapper/raid0 163879128' | dmsetup create raid0p7
[code]
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Little Nemo
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PostPosted: Wed Mar 31, 2004 7:41 pm    Post subject: Reply with quote

Oops, the RAID code seems to have changed a lot since kernel 2.4.16 (which is when I last set up an md RAID). I'm afraid I won't be of much help.

But how do you intend to use the same RAID 0 under Linux and Windows? You'd have to have a Software RAID under Windows, too? If you really need this kind of think, it might be easier to get a true RAID controller in hardware.
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linux_on_the_brain
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PostPosted: Fri Apr 02, 2004 5:50 am    Post subject: Reply with quote

pow wrote:
I'm using raid0 with two 160 GB Hitachi discs but I have some problems because I want to use the raid as boot drive together with windows. At the moment it's hard to configure it and the performance is more badly than the single drives and partition magic says me a error about the partition but I see no errors maybe the chunk size is bogus in the bios I have set the chunk size to 64. Here is my dmsetup configuration:

fdisk -l:
Code:

Disk /dev/mapper/raid0: 329.3 GB, 329393111040 bytes
255 heads, 63 sectors/track, 40046 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

             Device Boot      Start         End      Blocks   Id  System
/dev/mapper/raid0p1               2       12751   102414375    f  W95 Ext'd (LBA)
/dev/mapper/raid0p2           12752       40046   219247087+  83  Linux
/dev/mapper/raid0p5               2        5101    40965718+   b  W95 FAT32
/dev/mapper/raid0p6            5102       10201    40965718+   7  HPFS/NTFS
/dev/mapper/raid0p7           10202       12749    20466778+   7  HPFS/NTFS


[code]
echo -ne '0 643345920 striped 2 128 /dev/hde 0 /dev/hdg 0' | dmsetup create raid0
echo -ne '0 438494175 linear /dev/mapper/raid0 204844815' | dmsetup create raid0p2
echo -ne '0 81931437 linear /dev/mapper/raid0 16128' | dmsetup create raid0p5
echo -ne '0 81931437 linear /dev/mapper/raid0 81947628' | dmsetup create raid0p6
echo -ne '0 40965687 linear /dev/mapper/raid0 163879128' | dmsetup create raid0p7
[code]


Pow, How/Where did you come up with the numbers in your echo statements? THis is the only part that is holding me up from finishing.

Thanks
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pow
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PostPosted: Fri Apr 02, 2004 8:10 am    Post subject: Reply with quote

The most things are from this topic but I don't used the scripts.
https://forums.gentoo.org/viewtopic.php?t=128781&highlight=dmsetup
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linux_on_the_brain
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PostPosted: Fri Apr 02, 2004 6:22 pm    Post subject: Reply with quote

I am also following the step from the topic you posted, but I'm lost at the creation of the map file for each one of the new partitions.

For example,
echo -ne '0 438494175 linear /dev/mapper/raid0 204844815' | dmsetup create raid0p2
where did you these numbers from? From my eyes these numbers in no way match the output of your fdisk -l.

If you could, please clarify this for me.

Thanks
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pow
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PostPosted: Fri Apr 02, 2004 6:54 pm    Post subject: Reply with quote

use sfdisk -d /dev/mapper/raid0 and you get what you need.
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