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smyles
n00b
Joined: 23 Jul 2003
Posts: 13
Location: Ipswich, UK
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 Posted: Mon Jun 26, 2006 2:23 pm Post subject: LiveCD not creating /dev/sda link to megaraid device |
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I have a Compaq ML530 [not a G2 model] which I've connected an Intel SRCU42X dual channel RAID card. Using the BIOS on this card I've created a 1.7TB array of disks. The controller, which uses an LSI chip with the megaraid driver, is detected by the kernel. The problem is that no device /dev/sda is created so I can't go any further and partition the disk. The device appears under /sys/block/sda
Section of dmesg output
| Code: | megaraid cmm: 2.20.2.6 (Release Date: Mon Mar 7 00:01:03 EST 2005)
megaraid: 2.20.4.6 (Release Date: Mon Mar 07 12:27:22 EST 2005)
megaraid: probe new device 0x1000:0x0407:0x8086:0x0532: bus 3:slot 0:func 0
ACPI: PCI Interrupt 0000:03:00.0[A] -> GSI 25 (level, low) -> IRQ 18
megaraid: fw version:[414C] bios version:[H429]
scsi2 : LSI Logic MegaRAID driver
scsi[2]: scanning scsi channel 0 [Phy 0] for non-raid devices
scsi[2]: scanning scsi channel 1 [Phy 1] for non-raid devices
scsi[2]: scanning scsi channel 2 [virtual] for logical drives
Vendor: MegaRAID Model: LD 0 RAID5 1710G Rev: 414C
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sda: 3503898624 512-byte hdwr sectors (1793996 MB)
sda: asking for cache data failed
sda: assuming drive cache: write through
SCSI device sda: 3503898624 512-byte hdwr sectors (1793996 MB)
sda: asking for cache data failed
sda: assuming drive cache: write through
sda: unknown partition table
sd 2:2:0:0: Attached scsi disk sda
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ls -l of /sys/block/sda:
| Code: | -r--r--r-- 1 root root 4096 Jun 24 05:02 dev
lrwxrwxrwx 1 root root 0 Jun 23 22:33 device -> ../../devices/pci0000:02/0000:02:05.0/0000:03:00.0/host2/target2:2:0/2:2:0:0
drwxr-xr-x 3 root root 0 Jun 23 22:33 queue
-r--r--r-- 1 root root 4096 Jun 24 05:02 range
-r--r--r-- 1 root root 4096 Jun 24 05:02 removable
-r--r--r-- 1 root root 4096 Jun 24 05:02 size
-r--r--r-- 1 root root 4096 Jun 24 05:02 stat
--w------- 1 root root 4096 Jun 24 05:02 uevent
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Can anyone help why /dev/sda is not appearing and how to fix it?[/code][/glsa] |
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elestedt
Guru
Joined: 13 Mar 2005
Posts: 383
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| Posted: Mon Jun 26, 2006 5:50 pm Post subject: Re: LiveCD not creating /dev/sda link to megaraid device |
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Did you add doscsi to the kernel options?
That is: did you typeat boot prompt? |
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smyles
n00b
Joined: 23 Jul 2003
Posts: 13
Location: Ipswich, UK
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| Posted: Tue Jun 27, 2006 7:32 pm Post subject: |
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| Thanks for the reply. That didn't help much. The megaraid module is being loaded correctly and doing an lsmod shows the module. What doesn't seem to be happening is that a device node under /dev doesn't seem to being created. |
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elestedt
Guru
Joined: 13 Mar 2005
Posts: 383
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| Posted: Tue Jun 27, 2006 7:44 pm Post subject: |
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| smyles wrote: | | Thanks for the reply. That didn't help much. The megaraid module is being loaded correctly and doing an lsmod shows the module. What doesn't seem to be happening is that a device node under /dev doesn't seem to being created. |
Then I'm out of ideas - unfortunantly. Since your kernel does find the device that should have solved it.
Look around in the README at boot, there might be some option I've missed... |
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