Messages in this thread | | | Date | Tue, 8 Dec 2009 12:48:23 +0100 | Subject | SMP Kernel and SCSI problem at boot | From | Sim <> |
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Hello, excuse my (old) question, but I have a big problem with kernel 2.4.21-4.EL and SMP+SCSI (Red Hat), in a critical running server.
Trying to boot the server with SMP version (2.4.21-4.ELsmp) the system sleep over "SCSI DAT detect".
This is the report of dmesg in NOT SMP version: --------------------------------- [..] PCI: Enabling device 03:0c.0 (0000 -> 0003) scsi2 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 1.3.10 <Adaptec 29320LP Ultra320 SCSI adapter> aic7901A: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
Starting timer : 0 0 blk: queue f6d3dc14, I/O limit 4095Mb (mask 0xffffffff) (scsi2:A:6): 80.000MB/s transfers (40.000MHz, 16bit) Vendor: IBM Model: DDS Gen5 Rev: A060 Type: Sequential-Access ANSI SCSI revision: 03 Starting timer : 0 0 blk: queue f6d3de14, I/O limit 4095Mb (mask 0xffffffff) Journalled Block Device driver loaded kjournald starting. Commit interval 5 seconds EXT3-fs: mounted filesystem with ordered data mode. Freeing unused kernel memory: 164k freed usb.c: registered new driver usbdevfs usb.c: registered new driver hub usb-uhci.c: $Revision: 1.275 $ time 18:21:59 Oct 3 2003 usb-uhci.c: High bandwidth mode enabled PCI: Setting latency timer of device 00:1d.0 to 64 usb-uhci.c: USB UHCI at I/O 0x2200, IRQ 5 usb-uhci.c: Detected 2 ports usb.c: new USB bus registered, assigned bus number 1 [..] ---------------------------------
With SMP boot, the system stops its startup with: --------------------------------- [..] PCI: Enabling device 03:0c.0 (0000 -> 0003) scsi2 : Adaptec AIC79XX PCI-X SCSI HBA DRIVER, Rev 1.3.10 <Adaptec 29320LP Ultra320 SCSI adapter> aic7901A: Ultra320 Wide Channel A, SCSI Id=7, PCI-X 67-100Mhz, 512 SCBs
Starting timer : 0 0 blk: queue f6d3dc14, I/O limit 4095Mb (mask 0xffffffff) ---------------------------------
Looking around this problemsSomeone wrote:
...Dumping the ahd state when probing the da and simply stopped. So I set the SCSI BIOS to restrict the device speed upto 80MB/s and the problem went away. After that, the machine runs flawlessly for 8 months.
Can You help me?
Best Regards
--- Sim
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