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Re: [Xen-users] [Q] VmError: Disk isn't accessible with tap2:tapdisk:vhd

Hello Todd

Thank you for your information.

It seems that this is ``xm'' command specific problem.
(I always used `xm' command. because I used xen3. )

configuration

name    = "test"
maxmem  = 512
memory  = 512
vcpus   = 1
bootloader = "/usr/bin/pygrub"
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
#disk = [ "tap2:tapdisk:vhd:/tmp/tkoan.22561/test.vnd,xvda,w" ]
disk = [ "tap:vhd:/tmp/tkoan.22561/test.vnd,xvda,w" ]
vif = [ "mac=00:16:3e:10:e8:01,bridge=virbr0,script=vif-bridge" ]


xl: OK
xm:  NG

* xl
# OS booted.

* xm
# /usr/sbin/xm create xentest2 -c
Using config file "./xentest2".
Error: Disk isn't accessible

Sincerely.

--
Hiroyuki Sato

2011/8/5 Todd Deshane <todd.deshane@xxxxxxx>:
> On Thu, Aug 4, 2011 at 5:19 AM, Hiroyuki Sato <hiroysato@xxxxxxxxx> wrote:
>> I'm newbie Xen-4.1.1
>>
>> I'm trying to boot DomU with the following configuration.
>> Sometime DomU boot, but sometime boot failed
>>
>> I'm not sure what is the problem.
>>
>> I can attach that image with tap-ctl on Dom0.
>>
>> Does anybody advice me about this problem??
>>
>> Sincerely
>>
>> * Environment
>>
>>  OS : Scientific Linux 6.1 x86_64
>>  Kernel : 2.6.32.43
>>      git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git
>>  Xen : 4.1.1
>>
>>
>> * Error
>>
>> #
>> # tap2:tapdisk:vhd
>> #
>>
>>  /usr/sbin/xm create xentest2 -c
>>  Using config file "./xentest2".
>>  Error: Disk isn't accessible
>>
>>
>>  cat xentest2
>>  name    = "test"
>>  maxmem  = 512
>>  memory  = 512
>>  vcpus   = 1
>>  bootloader = "/usr/bin/pygrub"
>>  on_poweroff = "destroy"
>>  on_reboot = "restart"
>>  on_crash = "restart"
>>  disk = [ "tap2:tapdisk:vhd:/tmp/tkoan.22561/test.vnd,xvda,w" ]
>
> Could it be that the disk specification is incorrect?
> http://xen.markmail.org/search/?q=vhd%20tap#query:vhd%20tap+page:1+mid:qzorvzxlpchikvf6+state:results
>
>
>>  vif = [ "mac=00:16:3e:10:e8:01,bridge=virbr0,script=vif-bridge" ]
>>
>>
>>  # tap-ctl allocate
>>  /dev/xen/blktap-2/tapdev0
>>  # tap-ctl spawn
>>  tapdisk spawned with pid 2004
>>  # tap-ctl attach -p 2004 -m 0
>>  # tap-ctl open -p 2004 -m 0 -a vhd:/tmp/tkoan.22561/test.vnd
>>  # tap-ctl list
>>      2004  0    0        vhd /tmp/tkoan.22561/test.vnd
>>  # sfdisk /dev/xen/blktap-2/
>>  blktap0  control  tapdev0
>>  # sfdisk -d /dev/xen/blktap-2/tapdev0
>>  # partition table of /dev/xen/blktap-2/tapdev0
>>  unit: sectors
>>
>>  /dev/xen/blktap-2/tapdev0p1 : start=     2048, size=   204800, Id=83, 
>> bootable
>>  /dev/xen/blktap-2/tapdev0p2 : start=   206848, size=  2097152, Id=82
>>  /dev/xen/blktap-2/tapdev0p3 : start=  2304000, size= 18667520, Id=83
>>  /dev/xen/blktap-2/tapdev0p4 : start=        0, size=        0, Id= 0
>>
>> * log
>>
>> [2011-08-04 17:49:39 1676] DEBUG (XendDomainInfo:103)
>> XendDomainInfo.create(['vm', ['name', 'test'], ['memory', 512],
>> ['maxmem', 512], ['on_poweroff', 'destroy'], ['on_reboot', 'restart'],
>> ['on_crash', 'restart'], ['on_xend_start', 'ignore'], ['on_xend_stop',
>> 'ignore'], ['vcpus', 1], ['oos', 1], ['bootloader',
>> '/usr/bin/pygrub'], ['bootloader_args', ''], ['image', ['linux',
>> ['videoram', 4], ['tsc_mode', 0], ['nomigrate', 0]]], ['s3_integrity',
>> 1], ['device', ['tap2', ['uname',
>> 'tap2:tapdisk:vhd:/tmp/tkoan.22561/test.vnd'], ['dev', 'xvda'],
>> ['mode', 'w']]], ['device', ['vif', ['bridge', 'virbr0'], ['mac',
>> '00:16:3e:10:e8:01'], ['script', 'vif-bridge']]]])
>> [2011-08-04 17:49:39 1676] DEBUG (XendDomainInfo:2498)
>> XendDomainInfo.constructDomain
>> [2011-08-04 17:49:39 1676] DEBUG (balloon:187) Balloon: 884828 KiB
>> free; need 16384; done.
>> [2011-08-04 17:49:39 1676] DEBUG (XendDomain:476) Adding Domain: 1
>> [2011-08-04 17:49:39 1676] DEBUG (XendDomainInfo:2836)
>> XendDomainInfo.initDomain: 1 256
>> [2011-08-04 17:49:39 1676] INFO (XendDomainInfo:3270) Mounting
>> /tmp/tkoan.22561/test.vnd on /dev/xvdp.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:95) DevController:
>> writing {'backend-id': '0', 'virtual-device': '51952', 'device-type':
>> 'disk', 'state': '1', 'backend':
>> '/local/domain/0/backend/vbd/0/51952'} to
>> /local/domain/0/device/vbd/51952.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:97) DevController:
>> writing {'domain': 'Domain-0', 'frontend':
>> '/local/domain/0/device/vbd/51952', 'uuid':
>> '85d3a006-d760-4eec-7a03-f7b05097e1c8', 'bootable': '0', 'dev':
>> '/dev/xvdp', 'state': '1', 'params': '/dev/xen/blktap-2/tapdev0',
>> 'mode': 'r', 'online': '1', 'frontend-id': '0', 'type': 'phy',
>> 'tapdisk-params': 'tapdisk:vhd:/tmp/tkoan.22561/test.vnd'} to
>> /local/domain/0/backend/vbd/0/51952.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:144) Waiting for 51952.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:628)
>> hotplugStatusCallback
>> /local/domain/0/backend/vbd/0/51952/hotplug-status.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:628)
>> hotplugStatusCallback
>> /local/domain/0/backend/vbd/0/51952/hotplug-status.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:642) hotplugStatusCallback 1.
>> [2011-08-04 17:49:40 1676] DEBUG (DevController:144) Waiting for 51952.
>> [2011-08-04 17:49:41 1676] DEBUG (DevController:628)
>> hotplugStatusCallback
>> /local/domain/0/backend/vbd/0/51952/hotplug-status.
>> [2011-08-04 17:49:41 1676] DEBUG (DevController:642) hotplugStatusCallback 1.
>> [2011-08-04 17:49:41 1676] ERROR (XendBootloader:43) Disk isn't accessible
>> [2011-08-04 17:49:41 1676] INFO (XendDomainInfo:3289) Unmounting
>> /dev/xvdp from /dev/xvdp.
>> [2011-08-04 17:49:41 1676] DEBUG (XendDomainInfo:1276)
>> XendDomainInfo.destroyDevice: deviceClass = tap2, device = /dev/xvdp
>> [2011-08-04 17:49:41 1676] DEBUG (DevController:649)
>> deviceDestroyCallback
>> /local/domain/0/backend/vbd/0/51952/hotplug-status.
>> [2011-08-04 17:49:41 1676] DEBUG (DevController:649)
>> deviceDestroyCallback
>> /local/domain/0/backend/vbd/0/51952/hotplug-status.
>> [2011-08-04 17:49:41 1676] ERROR (XendDomainInfo:488) VM start failed
>> Traceback (most recent call last):
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 474, in start
>>    XendTask.log_progress(31, 60, self._initDomain)
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line
>> 209, in log_progress
>>    retval = func(*args, **kwds)
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 2838, in _initDomain
>>    self._configureBootloader()
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 3285, in _configureBootloader
>>    bootloader_args, kernel, ramdisk, args)
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendBootloader.py",
>> line 44, in bootloader
>>    raise VmError(msg)
>> VmError: Disk isn't accessible
>> [2011-08-04 17:49:41 1676] DEBUG (XendDomainInfo:3071)
>> XendDomainInfo.destroy: domid=1
>> [2011-08-04 17:49:41 1676] DEBUG (DevController:658) deviceDestroyCallback 6.
>> [2011-08-04 17:49:41 1676] DEBUG (XendDomainInfo:2406) No device model
>> [2011-08-04 17:49:41 1676] DEBUG (XendDomainInfo:2408) Releasing devices
>> [2011-08-04 17:49:41 1676] ERROR (XendDomainInfo:108) Domain construction 
>> failed
>> Traceback (most recent call last):
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 106, in create
>>    vm.start()
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 474, in start
>>    XendTask.log_progress(31, 60, self._initDomain)
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendTask.py", line
>> 209, in log_progress
>>    retval = func(*args, **kwds)
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 2838, in _initDomain
>>    self._configureBootloader()
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendDomainInfo.py",
>> line 3285, in _configureBootloader
>>    bootloader_args, kernel, ramdisk, args)
>>  File "/usr/lib64/python2.6/site-packages/xen/xend/XendBootloader.py",
>> line 44, in bootloader
>>    raise VmError(msg)
>> VmError: Disk isn't accessible
>>
>>
>> --
>> Hiroyuki Sato
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxxxxxxxx
>> http://lists.xensource.com/xen-users
>>
>
>
>
> --
> Todd Deshane
> http://www.linkedin.com/in/deshantm
> http://www.xen.org/products/cloudxen.html
> http://runningxen.com/
>

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