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Date:      Fri, 6 Jul 2007 08:13:58 -0400
From:      "Admin Wiggins" <enderbsd@gmail.com>
To:        freebsd-current@freebsd.org
Subject:   ZFS crash with ggate
Message-ID:  <15d429c0707060513i4f188c47jac1a7a17360d7f5d@mail.gmail.com>

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I have a crash i can reproduce on ZFS.

controllera# ggatec create -o rw -q 1024 -S 4194304 -R 4194304 -t 0 -u 111
10.12.1.11 /dev/ad4
controllera# ggatec create -o rw -q 1024 -S 4194304 -R 4194304 -t 0 -u 211
10.12.2.11 /dev/ad4
controllera# zpool status
no pools available
controllera# zpool create tank mirror /dev/ggate111 /dev/ggate211
controllera# zfs set atime=off tank
controllera# cp file.XXX /tank/

file.XXX is a 11G file filled with random data.
System is
FreeBSD 7.0-CURRENT #0: Thu Jul  5 05:56:04 UTC 2007   amd64

(copied by hand)
panic: ZFS: bad checksum (read on <unknown> off 0: zio 0xffffff00474d5810
[L0 SP
A space map] 1000L/800P DVA[0]=<0:16003ce800:800> DVA[1]=<0:2c000a6000:800>
DVA[
2]=<0:420001d000:800> fletcher4 lzjb LE contiguous birth=372 fill=1
chsum=5773bd
77e1:5b9ae37551df:3b73
cpuid=0
KDB: enter: panic
[thread pid 703 tid 100083 ]
Stopped at kdb_enter+0x31: leave
db>

I have 4 new amd64 machines setup here (dual 2218's and 4-8G memory) playing
with every combination of ggate, gstripe, gmirror and zfs. I am in a very
good position to help test this stuff, i just need the guidance :)



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