Re: xenbackendd error

[Bruno Gruel <b.gruel%sdnet.info@localhost>]

On Fri, 28 Oct 2011 12:01:05 +0200, Manuel Bouyer wrote:
> On Fri, Oct 28, 2011 at 11:44:35AM +0200, Bruno Gruel wrote:
> > If i find one i must just replace console=pc;multiboot by
> > console=com0;multiboot right ?
>
> You also need to tell xen.gz to use the serial port, like:
> multiboot /xen33-debug.gz dom0_mem=256M console=com1 com1=9600,8n1
I find a serial cable.

i create/shutdown a VM to show you the comple process. here the output

# xm create /etc/xen/bsd49.cfg

Using config file "/etc/xen/bsd49.cfg".

xbd backend: attach device vnd0d (size 4194304) for domain 1

xbd backend: attach device vnd1d (size 440324) for domain 1

Started domain openbsd49 (id=1)

#

#

# xm shutdown 1

# xbd backend: detach device vnd0d for domain 1

xbd backend: detach device vnd1d for domain 1

#

# xm create /etc/xen/bsd49.cfg

Using config file "/etc/xen/bsd49.cfg".

xbd backend: attach device vnd0d (size 4194304) for domain 2

xbdback backend/vbd/2/51712: can't VOP_OPEN device 0xe03: 16

xbd backend: attach device vnd1d (size 440324) for domain 2

xbdback backend/vbd/2/51744: can't VOP_OPEN device 0xe13: 16

Started domain openbsd49 (id=2)

# xm shutdown 2

# xbd backend: detach device vnd0d for domain 2

panic: kernel diagnostic assertion "vp == 
vp->v_specnode->sn_dev->sd_bdevvp" fai

led: file 
"/home/builds/ab/netbsd-5-1-RELEASE/src/sys/miscfs/specfs/spec_vnops.c

", line 929

fatal breakpoint trap in supervisor mode

trap type 1 code 0 rip ffffffff804f3bdd cs e030 rflags 246 cr2  
ffffa000260d1620

 cpl 6 rsp ffffa000259b1a10

Stopped in pid 0.25 (system) at netbsd:breakpoint+0x5:  leave

breakpoint() at netbsd:breakpoint+0x5

panic() at netbsd:panic+0x242

__kernassert() at netbsd:__kernassert+0x2d

spec_close() at netbsd:spec_close+0x262

VOP_CLOSE() at netbsd:VOP_CLOSE+0x29

vn_close() at netbsd:vn_close+0x51

xbdback_xenbus_destroy() at netbsd:xbdback_xenbus_destroy+0x1be

otherend_changed() at netbsd:otherend_changed+0xbf

xenwatch_thread() at netbsd:xenwatch_thread+0x51

ds          0x1a20

ds          0x1a20

fs          0x1a20

gs          0x4ed7

rdi         0

rsi         0x1

rbp         0xffffa000259b1a10

rbx         0xffffa000259b1a20

rdx         0

rcx         0

rax         0x1

r8          0xffffffff80baf580  cpu_info_primary

r9          0x1

r10         0xffffa000259b1930

r11         0xffffffff80531830  xenconscn_putc

r12         0x104

r13         0xffffffff80a32950

r14         0xffffa000259b1b80

r15         0xffffa000265302a8

rip         0xffffffff804f3bdd  breakpoint+0x5

cs          0xe030

rflags      0x246

rsp         0xffffa000259b1a10

ss          0xe02b

netbsd:breakpoint+0x5:  leave

db>

Do you want some more log ??
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