From owner-freebsd-fs  Fri Oct 18  8:32:10 2002
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Subject: NAS via NFS crashes with vinvalbuf: flush failed
Message-ID: <1034955118.86889.sjs@mail2000.com.tw>
To: "" <freebsd-isp@FreeBSD.ORG>, "" <freebsd-fs@FreeBSD.ORG>
Date: Fri, 18 Oct 2002 23:31:58 +0800 (CST)
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Hi,

  I have two FreeBSD servers mount NetApp NAS via NFS and run
under layer 4 switch to be redundant. I upgraded FreeBSD version
from 4.2R to 4.6.1-RC2, the panic crash still happen very often. 
The messages I got from every crash are all the same which is about
"vinvalbuf: flush failed". Once the server-1 crashes, server-2 will
crash very soon. I guess there's some problems with accessing NFS
files on NAS, so when server-1 crashes, server-2 keeps accessing
the same file and then crahes, too. 

  So is there any suggestion? Does it help to upgrade to 4.7R?

PS: Both servers are with dual CPU with SMP enabled. I tried to
    turn off SMP, but it didn't help anything.

  Thanks!

Best regards,
Gareth

===========================Message attached=====================

Oct 18 23:12:09 mail savecore: reboot after panic: vinvalbuf: flush failed
(kgdb) bt
#0  0xc01b0096 in dumpsys ()
#1  0xc01afe67 in boot ()
#2  0xc01b028c in poweroff_wait ()
#3  0xc01dc4c9 in vinvalbuf ()
#4  0xc023007c in nfs_vinvalbuf ()
#5  0xc0252ee9 in nfs_open ()
#6  0xc01e3943 in vn_open ()
#7  0xc01df848 in open ()
#8  0xc02e8aba in syscall2 ()
#9  0xc02da2f5 in Xint0x80_syscall ()
#10 0x804f62f in ?? ()
#11 0x804d9f8 in ?? ()
#12 0x804d2af in ?? ()
#13 0x804cac1 in ?? ()
#14 0x804adfc in ?? ()
#15 0x804a289 in ?? ()

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