> we use hightly loaded nfsv3/udp server with 5 fbsd nfs client
> all with 3.2-stable

The most typical cause for these crashes is hardware-induced memory 
corruption, caused by bad memory, a faulty or misconfigured motherboard 
or an overclocked CPU.  Are you performing any computational work on 
the server?  Does it see processes dying with signals 6, 10 or 11?

> server panics one/two time a day with:
> 
> panic: ufs_dirbad: bad dir
> 
> then reboot ...
> another panic:
> 
> panic: vm_fault: fault on nofault entry, addr: ce4c9000
> 
> in this case server write:
> 
> syncing disks...
> 
> and hangs ... after seting vfs.ffs.doreallocblks=0 server works without
> panic about 8 days, and then reboot with:
> 
> Fatal trap 12: page fault while in kernel mode

...
-- 
\\  The mind's the standard       \\  Mike Smith
\\  of the man.                   \\  msm...@freebsd.org
\\    -- Joseph Merrick           \\  msm...@cdrom.com




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