SMP boot problems with RHEL AS3

[Benjamin Hornberger]

Hi all,

I am having strange problem with RHEL AS3 on a dual-processor machine. When 
I boot the SMP kernel, the machine hangs during boot, but, if I am patient, 
after ca. 30 minutes finally comes up. When I boot the non-SMP kernel, it 
comes up ok (also waiting ca. 15 sec at the same point in the boot sequence).

Below is a cutout of the boot messages for the SMP kernel before it hangs, 
and the corresponding part of the non-SMP boot (don't laugh -- I took 
snapshots with a Digicam and typed it down. There might be some typos. It's 
just too fast to catch everything. ).

It's a Monarch ULB 2000 workstation with two AMD Athlon MP 2000+ 
processors, 3 GB RAM, two Seagate SCSI hard drives on an on-board 
controller (we boot from sda), a CD-RW and a DVD-ROM as primary and 
secondary master, and two Maxtor IDE drives as primary and secondary slaves 
(to be RAIDed) on the IDE bus. The machine ran fine under Redhat 7.2 and 
Redhat 9 before. It has been up2dated and runs now kernel 
2.4.21-15.0.3.EL(smp). The problem has been there already right after the 
installation with kernel 2.4.21-4.EL(smp).

Thanks for your help,
Benjamin

--------------------------------
Boot messages:

SMP kernel:

...
Initializing Cryptograhic API
NET4: Linux TCP/IP 1.0 for NET4.0
IP: routing cache hash table of 32768 buckets, 256Kbytes
TCP: Hash tables configured (established 524288 bind 65536)
Linux IP multicast router 0.06 plus PIM-SM
Initializing IPsec netlink socket
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 311k freed
VFS: Mounted root (ext2 filesystem).
Red Hat nash version 3.5.13 starting
Loading scsi_mod.o module
SCSI subsystem driver Revision: 1.00
Loading sd_mod.o module
Loading aic7xxx.0 module
scsi0 : Adapted AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
         <Adaptec aic7899 Ultra160 SCSI adapter>
         aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs

scsi1 : Adapted AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev. 6.2.36
         <Adapted aic7899 Ultra160 SCSI adapter>
         aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs

blk: queue f7fd6414, I/O limit 4095Mb (mask 0xffffffff)
(scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
(scsi0:A:1): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
   Vendor: SEAGATE   Model: ST336752LW        Rev: 0004
   Type:   Direct-Access                      ANSI SCSI revision: 03
blk: queue f7fd7214, I/0 limit 4095Mb (mask 0xffffffff)
   Vendor: SEAGATE   Model: ST336752LW        Rev: 0004
   Type:   Direct-Access                      ANSI SCSI revision: 03
blk: queue f7fd7414, I/O limit 4095Mb (mask 0xffffffff)
scsi0:A:0:0: Tagged Queuing enabled.   Depth 32
scsi0:A:1:0: Tagged Queuing enabled.   Depth 32

**** hangs ca. 30 minutes here, but then comes up *****



non-SMP kernel:

...
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0
RAMDISK: Compressed image found at block 0
Freeing initrd memory: 304k freed
VFS: Mounted root (ext2 filesystem).
Red Hat nash version 3.5.13 starting
Loading scsi_mod.o module
SCSI subsystem driver Revision: 1.00
Loading sd_mod.o module
Loading aic7xxx.0 module
AMD756: dev 9005:00cf, router pirq : 1 get irq : 10
PCI: Found IRQ 10 for device 00:0a.0
PCI: Sharing IRQ 10 with 02:04.0
AMD756: dev 9005:00cf, router pirq : 2 get irq : 11
PCI: Found IRQ 11 for device 00:0a.1
PCI: Sharing IRQ 11 WITH 01:05.0
scsi0 : Adapted AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.36
         <Adaptec aic7899 Ultra160 SCSI adapter>
         aic7899: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs

scsi1 : Adapted AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev. 6.2.36
         <Adapted aic7899 Ultra160 SCSI adapter>
         aic7899: Ultra160 Wide Channel B, SCSI Id=7, 32/253 SCBs

blk: queue f7fd6414, I/O limit 4095Mb (mask 0xffffffff)

***** waits ca. 15 sec here *****

(scsi0:A:0): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
(scsi0:A:1): 160.000MB/s transfers (80.000MHz DT, offset 63, 16bit)
   Vendor: SEAGATE   Model: ST336752LW        Rev: 0004
   Type:   Direct-Access                      ANSI SCSI revision: 03
blk: queue f7fd7214, I/0 limit 4095Mb (mask 0xffffffff)
   Vendor: SEAGATE   Model: ST336752LW        Rev: 0004
   Type:   Direct-Access                      ANSI SCSI revision: 03
blk: queue f7fd7414, I/O limit 4095Mb (mask 0xffffffff)
scsi0:A:0:0: Tagged Queuing enabled.   Depth 32
scsi0:A:1:0: Tagged Queuing enabled.   Depth 32
...
***** comes up fine *****