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kamina
Apprentice
Joined: 14 Jun 2004
Posts: 157
Location: Finland
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 Posted: Mon Jul 04, 2005 10:57 am Post subject: scsi hardware raid problems |
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I aquired an old HP netserver Lc 2000r which has a HP netraid 1si raid controller and 4 scsi disks. I set up 3 of the disks in a raid 5 setup (to show up as one) and the controller seems to report everything correctly.
I should probably start by saying I don't have experience with scsi hardware under any operating system.
It seems to me that the gentoo 2005.0 cd I booted with (gentoo doscsi) detects the controller just fine, but I can't figure out how the disks show up under gentoo. Dmesg also does'nt give me hints on what the drive could be. Under /dev I can find hda (cdrom), but no other hdX or sdX devices. I tried searching the forums for similar problems, but could'nt find any solution. Any ideas on where to start would be appreciated.
modprobe megaraid says it does'nt find modules called megaraid.
lspci shows two instances of symbian SYM53C896 scsi raid controllers. |
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Rad
Guru
Joined: 11 Feb 2004
Posts: 401
Location: Bern, Switzerland
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| Posted: Mon Jul 04, 2005 12:48 pm Post subject: |
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How do you get the impression the LiveCD detected the controller just fine?
As far as I can tell, your dmesg.txt says no card was found/loaded. I only see a single IDE PCI card (or at least that's what Linux thinks what it is  ) where the cdrom is attached.
I think you need to load the correct driver for your card. If none is on the official Gentoo LiveCD, you can try another (like knoppix or so). |
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adaptr
Watchman
Joined: 06 Oct 2002
Posts: 6730
Location: Rotterdam, Netherlands
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| Posted: Mon Jul 04, 2005 12:49 pm Post subject: |
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If you only have a single SCSI RAID array this should always show up as /dev/sda.
According to some Googling (http://www.google.nl/search?hl=en&q=linux+HP+netraid+1si) the megaraid module should simply work.
If you booted the system with "gentoo doscsi" then the module should already be loaded; do
to check this.
If this is a new RAID controller you should have no problems; be aware that a used one may have very personal BIOS settings that you have to reset in order to use it properly.
That is a waaay to involved topic to go into here; check the documentation for the RAID controller on how to set up the BIOS.
EDIT: didn't see that dmesg there; use bold text in such cases!
Anyway, this:
| Code: | sym0: <896> rev 0x6 at pci 0000:03:06.0 irq 24
sym0: Symbios NVRAM, ID 7, Fast-40, LVD, parity checking
...
sym1: <896> rev 0x6 at pci 0000:03:06.1 irq 25
sym1: Symbios NVRAM, ID 7, Fast-40, SE, parity checking |
conclusively proves that Gentoo doesn't see a megaraid controller - it sees two independent LSI ones.
I know, I have one - my Dell PERC II is seen as an AMI MegaRAID 2 - and works.
So boot with gentoo, no scsi, and modprobe the megaraid module yourself.
I find it weird that the HP card allows an OS to see it's two constituent SCSI controllers instead of just the megaraid controller.
_________________
>>> emerge (3 of 7) mcse/70-293 to /
Essential tools: gentoolkit eix profuse screen |
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kamina
Apprentice
Joined: 14 Jun 2004
Posts: 157
Location: Finland
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| Posted: Mon Jul 04, 2005 6:25 pm Post subject: |
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When I modprobe megaraid it does not recognise it. Do I have to compile the module, and if I do, could you give a quick "walk-through"?
edit: seems the megaraid module has changed for 2005.0, I'll try to install with an older one tomorrow. |
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joeybravo
n00b
Joined: 30 Aug 2002
Posts: 45
Location: PH
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| Posted: Tue Jul 05, 2005 8:28 am Post subject: |
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| Quote: | | edit: seems the megaraid module has changed for 2005.0, I'll try to install with an older one tomorrow. |
Hi we are encountering same problem as yours, do you have any update?
_________________
--lucky are the pessimists
for they make backups.. |
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kamina
Apprentice
Joined: 14 Jun 2004
Posts: 157
Location: Finland
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| Posted: Tue Jul 05, 2005 2:50 pm Post subject: |
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Yes, I found a solution! 
https://forums.gentoo.org/viewtopic-t-267325-highlight-megaraid.html
This thread holds the conclusion. I allready downloaded the normal 2004.3 and tried to boot with "gentoo doscsi". Unfortunatly it kept hanging on some module I don't have use for. I then found the thread above and downloaded the image he made. I first downloaded 2004.3 scsi r4, but it did'nt work either. 2004.3 scsi r4a worked finally like a charm!
http://www.novickzone.com/gentoo/
I think that link works for the image. (minimal install)
boot with "gentoo domegaraid" and it works. |
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