HELP -> RH 6.2, Adaptec 2940UW, and CMD CRD-5500 not playing nice..

HELP -> RH 6.2, Adaptec 2940UW, and CMD CRD-5500 not playing nice..

Post by Snow D » Fri, 02 Feb 2001 02:23:06



Hi Group,

I'm having a problem getting Linux and its Adaptec module (aic7xxx) to
recognize my CMD CRD-5500 RAID System.  Here are the details:

System Configuration:
Fresh RedHat 6.2 Install (no modifications yet)
Dual Intel Pentium II 400 w/512 Megs RAM
2 Internal SymBIOS onboard Controllers (ncr53c8xx module)
1 PCI Adaptec 2940UW V2.57.2 (aic7xxx module)
1 Seagate ST34572W 4GB Drive connected to SymBIOS Controller (scsi id
0)
1 Seagate ST118273W 18GB Drive connected to SymBIOS Controller (scsi
id 1)
1 CMD CRD-5500 RAID System running 104GB RAID5 connected to external
connector of Adapatec 2940UW (scsi id 0)

The problem is that during Linux boot or in the OS I cannot see the
drive connected to the Adaptec 2940UW.  However, during the inital
POST of the system, the drive shows up.  If you do a <CTRL> A and use
the Adaptec SCSI Select Utility, the unit shows up there as well.  I'm
able to format or verify disk media, etc.  

One caveat is the controller shows the disk size or the RAID array as
38GBs instead of 104GB.  However, I think this is just a reporting
issue.  

I think the problem appears to be with the Adaptec module (aic7xxx),
but I am not sure.  I also noticed that during bootup I get a
"enable_irq() unbalanced from e082d401" error after the OS downloads
the sequencer code from the Adaptec card.

I checked around on the net regarding the "enable_irq() unbalanced"
error and found ALOT of responses.  It's not clear whether that
problem is related at all.  Some people have reported that problem but
still detect their drives fine and their controllers seem to work
fine.

I've also tried different SCSI IDs, enabling Multiple LUN Support,
disabling disconnects, disabling/enabling BIOS support, and just about
every option possible in the Adaptec SCSI Select Utility.  All to no
avail.

Below is an excerpt of the output from dmesg.  

ncr53c8xx: at PCI bus 0, device 13, function 0
ncr53c8xx: 53c876 detected
ncr53c8xx: at PCI bus 0, device 13, function 1
ncr53c8xx: 53c876 detected
ncr53c876-0: rev=0x37, base=0xfedf6c00, io_port=0xf800, irq=5
ncr53c876-0: ID 7, Fast-20, Parity Checking
ncr53c876-0: on-chip RAM at 0xfedf7000
ncr53c876-0: restart (scsi reset).
ncr53c876-0: Downloading SCSI SCRIPTS.
ncr53c876-1: rev=0x37, base=0xfedf6800, io_port=0xf400, irq=11
ncr53c876-1: ID 7, Fast-20, Parity Checking
ncr53c876-1: on-chip RAM at 0xfedf5000
ncr53c876-1: restart (scsi reset).
ncr53c876-1: Downloading SCSI SCRIPTS.
scsi0 : ncr53c8xx - version 3.2a-2
scsi1 : ncr53c8xx - version 3.2a-2
scsi : 2 hosts.
  Vendor: SEAGATE   Model: ST34572W          Rev: 0876
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
  Vendor: SEAGATE   Model: ST118273W         Rev: 5698
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
ncr53c876-0-<0,0>: tagged command queue depth set to 8
ncr53c876-0-<1,0>: tagged command queue depth set to 8
ncr53c876-0-<0,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 15)
SCSI device sda: hdwr sector= 512 bytes. Sectors= 8888924 [4340 MB]
[4.3 GB]
 sda: sda1 sda2 < sda5 sda6 >
ncr53c876-0-<1,*>: FAST-20 WIDE SCSI 40.0 MB/s (50 ns, offset 15)
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 35566480 [17366 MB]
[17.4 GB]
 sdb:
(scsi2) <Adaptec AHA-294X Ultra SCSI host adapter> found at PCI 0/16/0
(scsi2) Wide Channel, SCSI ID=7, 16/255 SCBs
(scsi2) Cables present (Int-50 NO, Int-68 NO, Ext-68 YES)
(scsi2) Downloading sequencer code... 423 instructions downloaded
enable_irq() unbalanced from e082d401
scsi2 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI)
5.1.28/3.2.4
       <Adaptec AHA-294X Ultra SCSI host adapter>
scsi : 3 hosts.

If anyone has any insight, suggestions, comments, or recommendations,
please let me know.  This has become quite frustrating.  I'd greatly
appreciate it. :)

Thanks...

Sean

 
 
 

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