Date: Fri, 24 Dec 2010 06:27:13 GMT From: Kenji Togashi <togacy@nts.ricoh.co.jp> To: freebsd-gnats-submit@FreeBSD.org Subject: amd64/153418: Kernel Panic occurred writing to zfs volume via nfs. Message-ID: <201012240627.oBO6RDuR046845@red.freebsd.org> Resent-Message-ID: <201012240630.oBO6UAER020314@freefall.freebsd.org>
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>Number: 153418
>Category: amd64
>Synopsis: Kernel Panic occurred writing to zfs volume via nfs.
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-amd64
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Dec 24 06:30:10 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator: Kenji Togashi
>Release: FreeBSD-8.1-RELEASE-amd64-dvd1.iso
>Organization:
Ricoh Co., Ltd.
>Environment:
FreeBSD fbsd64 8.1-RELEASE FreeBSD 8.1-RELEASE #0: Mon Jul 19 02:36:49 UTC 2010 root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64
>Description:
Dear,
I set up zfs volume, and export via nfs on freebsd8.1.
It mounts by client, and vdbench is executed.
The kernel panic is occurred.
The detailed procedure is as follows.
--- nfs server(freebsd8.1 amd64) ---
<</dev/mfid0s2>>
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 40949685, size 244718145 (119491 Meg), flag 0
beg: cyl 501/ head 0/ sector 1;
end: cyl 373/ head 254/ sector 63
<</dev/mfid1s2>>
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 40949685, size 244718145 (119491 Meg), flag 0
beg: cyl 501/ head 0/ sector 1;
end: cyl 373/ head 254/ sector 63
<</dev/mfid2s2>>
The data for partition 2 is:
sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD)
start 40949685, size 244718145 (119491 Meg), flag 0
beg: cyl 501/ head 0/ sector 1;
end: cyl 373/ head 254/ sector 63
# zpool create expdsk raidz mfid0s2 mfid1s2 mfid2s2
# zpool status
pool: expdsk
state: ONLINE
scrub: none requested
config:
NAME STATE READ WRITE CKSUM
expdsk ONLINE 0 0 0
raidz1 ONLINE 0 0 0
mfid0s2 ONLINE 0 0 0
mfid1s2 ONLINE 0 0 0
mfid2s2 ONLINE 0 0 0
errors: No known data errors
# df -Th
Filesystem Type Size Used Avail Capacity Mounted on
/dev/mfid0s1a ufs 496M 275M 182M 60% /
devfs devfs 1.0K 1.0K 0B 100% /dev
/dev/mfid0s1e ufs 496M 12K 456M 0% /tmp
/dev/mfid0s1f ufs 9.2G 1.2G 7.3G 14% /usr
/dev/mfid0s1d ufs 4.8G 766K 4.4G 0% /var
expdsk zfs 229G 23G 207G 10% /expdsk
# vi /etc/rc.conf
nfs_server_enable="YES"
mountd_flags="-r"
mountd_enable="YES"
rpcbind_enable="YES"
# vi /etc/exports
/expdsk -network 192.168.184.0 -mask 255.255.255.192 -mapall=root
# vi /etc/hosts.allow
rpcbind : 192.168.184.0/255.255.255.192 : allow
# service rpcbind start
# service nfsd start
# service mountd start
# zfs sharenfs=on /expdsk
--- nfs client(CentOS5.5 i386) ---
The vdbench(5.02) is executed on client side(CentOS5.5), kernel panic is occurred on nfs server(freebsd8.1) after while.
# mount -t nfs 192.168.184.xx:/expdsk /mnt
# ./vdbench -f vdb_setting
<<vdb_setting>>
fsd=fsd1,anchor=/mnt,depth=5,width=3,files=200,sizes=(4k,25,32k,15,256k,20,2m,25,16m,15)
fwd=fwd1,fsd=fsd1,operation=write,xfersizes=64k,fileio=sequential,fileselect=random,threads=4
rd=rd1,fwd=fwd1,fwdrate=max,format=on,elapsed=180,interval=10
--- nfs server ---
About 24GB is written, and kernel panic as follows is occurred.
panic: kmem_malloc(131072)： kmem_map too small: 1356701696 total allocated
cpuid = 1
Uptime: 24m43s
Cannot dump. Device not defined or unavailable
Automatic reboot in 15 seconds - press akey on the console to abort
>How-To-Repeat:
# ./vdbench -f vdb_setting
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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