SMP and NFS

[Heinrich Rebehn]

Erik Norgaard wrote:
> M wrote:
> 
>> I have a system that is being used as a high performance NFS server
>>
>> FreeBSD nfs2 5.3-RELEASE-p2 FreeBSD 5.3-RELEASE-p2 #1: Tue Jan  4  
>> 19:14:40 EST 2005     root at nfs2:/usr/obj/usr/src/sys/NFS  i386
>>
>> Two CPUs (tried hyperthreading and not), 4 GB of memory
>>
>> CPU: Intel(R) Xeon(TM) CPU 2.40GHz (2400.10-MHz 686-class CPU)
>>   Origin = "GenuineIntel"  Id = 0xf29  Stepping = 9
>>    
>> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE 
>> ,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HT
>> T,TM,PBE>
>>   Hyperthreading: 2 logical CPUs
>> real memory  = 4160225280 (3967 MB)
>> avail memory = 4073271296 (3884 MB)
>> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
>>  cpu0 (BSP): APIC ID:  0
>>  cpu1 (AP): APIC ID:  6
>>
>> The NFS exported filesystem is on a Q-Logic FC card
>>
>> isp0: <Qlogic ISP 2312 PCI FC-AL Adapter> port 0x4000-0x40ff mem  
>> 0xf8300000-0xf8300fff irq 28 at device 3.0 on pci3
>> isp0: [GIANT-LOCKED]
>>
>> The disk is formated UFS2 and is big, but not *that* big yet
>>
>> /dev/da1s1d 471860682 206516934 227594894    48%    /usr/local/export
>>
>> Every 12  hours or so the system crashes with a hard lock and no 
>> error  messages in /var/log/messages or on the screen. I've moved all 
>> the  disks to a duplicate system. If it continues to lock hard what's 
>> the  possibility the issue is SMP?
> 
> 
> See this message from yesterday (submitted to announce):
> 
> ftp://ftp.freebsd.org/pub/FreeBSD/ERRATA/notices/FreeBSD-EN-05:01.nfs.asc
> 
> In short, update your system.
> 
> Cheers, Erik

Since i am going to set up a SMP NFS server too, i would be interested 
if this really solves the OP's problem. After all, he is talking about a 
"hard lock with no messages..", as opposed to a "kernel panic", which in 
my understanding always produces messages.


Heinrich Rebehn

University of Bremen
Physics / Electrical and Electronics Engineering
- Department of Telecommunications -

Phone : +49/421/218-4664
Fax   :            -3341