DragonFly BSD
DragonFly bugs List (threaded) for 2009-10
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Re: Panic in vkernel with NFS as root mount

From: Rumko <rumcic@xxxxxxxxx>
Date: Fri, 02 Oct 2009 23:37:37 +0200

Matthew Dillon wrote:
>     Ok, please try this patch:
>     fetch http://apollo.backplane.com/DFlyMisc/nfs01.patch
> -Matt
> Matthew Dillon
> <dillon@backplane.com>

Better, but not perfect. Also the part about the nfs server (it's running on
the host machine) not responding is bothering me, but that's a different

KVM mapped at 0x40000000-0x80000000
Locking CPU0 to real cpu 1
Copyright (c) 2003-2009 The DragonFly Project.
Copyright (c) 1992-2003 The FreeBSD Project.
Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
        The Regents of the University of California. All rights reserved.
Slab ZoneSize set to 64KB
Leaving critical section, allowing interrupts
DragonFly v2.5.0.135.gda5ac-DEVELOPMENT #54: Fri Oct  2 23:23:26 CEST 2009
real memory = 134217728 (131072K bytes)
avail memory = 127180800 (124200K bytes)
Locking CPU1 to real cpu 1
DragonFly/MP: Multiprocessor
 cpu0 (BSP)
 cpu1 (AP)
Finish MP startup
SMP: AP CPU #1 Launched!
Active CPU Mask: 00000003
objcache(exec-args): too small for ncpus, adjusting cluster_limit 16->32
start scheduler helpers on cpus: 0 1
start dummy scheduler helpers on cpus: 0 1
vkd0: type 0xa5, start 32, end = 20971519, size 20971488 : OK
vkd1: type 0xa5, start 32, end = 4194303, size 4194272 : OK
vke0: bpf attached
vke0: MAC address: 00:be:0e:1d:00:00
md0: Malloc disk
Device configuration finished.
lo0: bpf attached
PXE: Warning, no NFS handle passed from loader
Mounting root from nfs:
nfs_mountroot: interface vke0 ip bcast mask
NFS_ROOT: No FH passed from loader, attempting mount rpc...success!
Mounting devfs
start_init: trying /sbin/init
Interface vke0 IP-Address Broadcast
mount_nfs: can't update /var/db/mounttab for
nfs server not responding
nfs server is alive again
Loading configuration files.
Loading devfs rules: /etc/defaults/devfs.conf.
kern.seedenable: 0 -> 1
panic: assertion: tsiz <= nmp->nm_rsize in nfs_readrpc_bio
mp_lock = 00000001; cpuid = 1
Trace beginning at frame 0x58019d00
panic(58019d24,4000,580f3eb0,5094c674,58019d44) at 0x80a4d86
panic(81d0522,81e8d5b,81e8f1f,2000,0) at 0x80a4d86
nfs_readrpc_bio(5a6a32d0,5094c6e0,549a8a18,5094c6e0,548cfc00) at 0x814d7d2
nfs_startio(5a6a32d0,5094c6e0,0,5a6a32d0,414003cc) at 0x814f038
nfssvc_iod_writer(548cfc00,0,0,0,0) at 0x8166999

CPU1 stopping CPUs: 0x00000001
Stopped at      0x81c45d9:      movb    $0,0x8302834

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