Re: [Xen-users] Re: Xen 4.0 on gentoo hotplug scripts problem? broken with filenames with spaces

["Pasi Kärkkäinen" <pasik@iki.fi>]

On Fri, Apr 09, 2010 at 11:28:51AM +0100, Andrew Lyon wrote:
> On Fri, Apr 9, 2010 at 9:21 AM, Andrew Lyon <andrew.lyon@gmail.com> wrote:
> > On Fri, Apr 9, 2010 at 9:15 AM, Andrew Lyon <andrew.lyon@gmail.com> wrote:
> >> On Fri, Apr 9, 2010 at 9:10 AM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
> >>> On Fri, Apr 09, 2010 at 08:45:44AM +0100, Andrew Lyon wrote:
> >>>> On Thu, Apr 8, 2010 at 10:20 PM, Pasi Kärkkäinen <pasik@iki.fi> wrote:
> >>>> > On Thu, Apr 08, 2010 at 02:14:17PM -0700, Boris Derzhavets wrote:
> >>>> >>    I believe profile should look like
> >>>> >>
> >>>> >>    memory=512
> >>>> >>    name='Gentoo-32-test'
> >>>> >>    vif=['bridge=eth(x)']
> >>>> >>    bootloader='/usr/bin/pygrub'
> >>>> >>    disk=['file:/mnt/tb1_store/Xen
> >>>> >>    VMs/Gentoo-32/Gentoo-32.sda1,xvda,w','phy:/dev/test/test,xvdb ,w']
> >>>> >>    extra='gentoo=nodevfs console=xvc0'
> >>>> >>
> >>>> >>    It's PV domU , so xvda,xvda,.....
> >>>> >>
> >>>> >>    Blktap driver is not important, no "tap:aio"
> >>>> >>
> >>>> >
> >>>> > Also I think Xen 4.0.0 needs to have "disk = [ "tap:tapdisk:aio:/path/images/disk.img,xvda,w" ]" to use blktap2.
> >>>>
> >>>> I tried that syntax but it does not work:
> >>>>
> >>>> name='Gentoo-32-test'
> >>>> vif=['bridge=eth0']
> >>>> bootloader='/usr/bin/pygrub'
> >>>> disk=[ "tap:tapdisk:aio:/mnt/tb1_store/Xen VMs/Gentoo-32/Gentoo-32.sda1,xvda,w"]
> >>>> extra='gentoo=nodevfs console=xvc0'
> >>>>
> >>>> Using config file "./Gentoo-32-test.cfg".
> >>>> Error: [Errno 2] No such file or directory: 'aio:/mnt/tb1_store/Xen
> >>>> VMs/Gentoo-32/Gentoo-32.sda1'
> >>>>
> >>>
> >>> Hmm.. that's weird. The blktap2 syntax is correct based on the latest blktap2 README here:
> >>> http://lxr.xensource.com/lxr/source/tools/blktap2/README
> >>>
> >>>> I changed the config back to file:/ and tried again, the xm create
> >>>> process seemed to hang and the block script was stuck:
> >>>>
> >>>
> >>> Ok, so you have some general problem, not really blktap2 related..
> >>>
> >>>>
> >>>> root     14152  0.0  0.0  17596  1572 ?        S<   08:43   0:00
> >>>> /bin/bash /etc/xen/scripts/block add
> >>>>
> >>>> eventually it errors  Error: Device 51712 (vbd) could not be
> >>>> connected. /etc/xen/scripts/block failed; error detected.
> >>>>
> >>>> And the remove script is also stuck:
> >>>>
> >>>> /bin/bash /etc/xen/scripts/block remove
> >>>>
> >>>
> >>> Did you install Xen 4.0.0 over some old version?
> >>>
> >>> Did you remove the old version first? Maybe your 4.0.0 is not completely/properly installed..
> >>
> >> I will try removing Xen first, including all of /etc/xen/
> >>
> >> Andy
> >>
> >>>
> >>> Pasi
> >>>
> >>>
> >>
> >
> > I think you are onto something, after completely removing Xen I cannot
> > compile 4.0:
> >
> > Wl,-O1          -L../../tools/libxc -lxenctrl    -L../../tools/libxc
> > -lxenctrl          -o libvhd.so.1.0.0 -luuid libvhd.o libvhd-journal.o
> > vhd-util-coalesce.o vhd-util-create.o vhd-util-fill.o
> > vhd-util-modify.o vhd-util-query.o vhd-util-read.o vhd-util-repair.o
> > vhd-util-resize.o vhd-util-revert.o vhd-util-set-field.o
> > vhd-util-snapshot.o vhd-util-scan.o vhd-util-check.o relative-path.o
> > atomicio.o ../../lvm/lvm-util.o
> > /usr/lib/gcc/x86_64-pc-linux-gnu/4.3.4/../../../../x86_64-pc-linux-gnu/bin/ld:
> > cannot find -lxenctrl
> > collect2: ld returned 1 exit status
> > make[6]: *** [libvhd.a] Error 1
> > make[6]: Leaving directory
> > `/var/tmp/portage/app-emulation/xen-tools-4.0.0/work/xen-4.0.0/tools/blktap2/vhd/lib'
> > make[5]: *** [subdir-all-lib] Error 2
> >
> > Which makes me think that some part of 4.0 was compiled against 3.4.2...
> >
> > Andy
> >
> 
> I've found at least one problem with 4.0, if the path to the disk
> backing file contains any spaces then the hotplug scripts stall and
> domain creation fails, I had made a symlink without spaces but
> apparently the scripts attempt to resolve symlinks so I had to
> physically rename the dir so that no spaces are used.
> 
> I struggled to find any errors relating to domain creation, but the
> hotplug cleanup scripts do log some errors:
> 
> /etc/xen/scripts/xen-hotplug-cleanup: line 25: [: !=: unary operator expected
> stat: cannot stat `/mnt/tb1_store/Xen': No such file or directory
> stat: cannot stat `VMs/WinXP/WinXP.hda': No such file or directory
> xenstore-read: couldn't read path backend/vbd/7/768/node
> 
> The path was "/mnt/tb1_store/Xen VMs/WinXP/WinXP.hda" and worked fine with 3.4.2
> 

Thanks for looking into that.
I added xen-devel to CC.. maybe this rings some bells for someone.

-- Pasi