Re: [Xen-users] xenpvnetboot failed with message "no space left on device"

[FÃlix Barbeira <fbarbeira@xxxxxxxxx>]

I answer myself. I checked the source code of "xenpvnetboot" and debugged some variables. The program tries to download pxe files to this directory:

/var/run/xen/bootloader.67.d/xenpvboot.coreos_production_pxe.vmlinuz.QsWnpE

/var/run/xen/bootloader.67.d/xenpvboot.coreos_production_pxe_image.cpio.gz.SsHYXP

dom0 has only 1G RAM size, so ubuntu gives the "/run/" partition this size:

# df -hl /run

Filesystem  ÂSize Used ÂAvail Used% Mount on

tmpfs       75M  1,1M  73M  2% /run

#

So the program exits with the right error message. Checking the source code I saw an option called "--output-directory". So I added the following option to the xen cfg file:

bootloader_args = [ '--output-directory=/tmp/' ]

And it worked fine.

2015-05-07 21:28 GMT+02:00 FÃlix Barbeira <fbarbeira@xxxxxxxxx>:

I want to load a vm using the bootloader "xenpvnetboot" following the instructions from http://wiki.xen.org/wiki/Xenpvnetboot . This is the cfg file:

bootloader = 'xenpvnetboot'
kernel = 'http://stable.release.core-os.net/amd64-usr/current/coreos_production_pxe.vmlinuz'
ramdisk = 'http://stable.release.core-os.net/amd64-usr/current/coreos_production_pxe_image.cpio.gz'
name = "coreos02"
memory = "1024"
vcpus = 2
vif = [ 'ip=10.200.0.71 ,mac=00:16:3e:23:33:d2,bridge=sw0' ]
disk = [ 'phy:/dev/vg0/coreos02-disk,xvda,w' ]

But when I try to boot the vm with "xl create coreos.cfg -c" I see the following in the log:

Traceback (most recent call last):

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 1094, in _retrieve

  self.fo.write(buf)

IOError: [Errno 28] No space left on device

Traceback (most recent call last):

 File "/usr/lib/xen-4.4/bin/xenpvnetboot", line 293, in <module>

  main()

 File "/usr/lib/xen-4.4/bin/xenpvnetboot", line 265, in main

  ramdisk = fetcher.get_file(opts.ramdisk)

 File "/usr/lib/xen-4.4/bin/xenpvnetboot", line 94, in get_file

  return urlgrabber.urlgrab(url, local_name, copy_local=1)

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 618, in urlgrab

  return default_grabber.urlgrab(url, filename, **kwargs)

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 982, in urlgrab

  return self._retry(opts, retryfunc, url, filename)

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 886, in _retry

  r = apply(func, (opts,) + args, {})

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 968, in retryfunc

  fo = PyCurlFileObject(url, filename, opts)

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 1063, in __init__

  self._do_open()

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 1355, in _do_open

  self._do_grab()

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 1485, in _do_grab

  self._do_perform()

 File "/usr/lib/python2.7/dist-packages/urlgrabber/grabber.py", line 1280, in _do_perform

  raise KeyboardInterrupt
KeyboardInterrupt

The package urlgrabber is installed. I tried to wget the http links on the dom0 and worked fine. There is space more than enough in the dom0 and the in the lvm partition. I'm using ubuntu 14 with the xen 4.4 installed from the ubuntu repository. Anybody knows what is happening?

--

FÃlix Barbeira.

--

FÃlix Barbeira.

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