Pkg xen devel - Nov 2015 - Bug#805508: xen: Unable to create HVM domUs

Source: xen
Version: 4.6.0-1
Severity: important

Dear Maintainer,

I attempted to create a HVM domU - using a config that previously worked 
on xen 4.4 (on Jessie).

When I execute "xl create <vm config>", I get:

Parsing config from router.internal.tomjepp.uk
xc: error: Could not open kernel image '/usr/lib/xen/boot/hvmloader' (2 
= No such file or directory): Internal error
libxl: error: libxl_dom.c:1006:libxl__build_hvm: hvm building failed
libxl: error: libxl_create.c:1142:domcreate_rebuild_done: cannot 
(re-)build domain: -3
libxl: error: libxl_dm.c:2004:libxl__destroy_device_model: xs_rm failed 
for /local/domain/0/device-model/5
libxl: error: libxl_dm.c:1956:kill_device_model: unable to find device 
model pid in /local/domain/5/image/device-model-pid
libxl: error: libxl.c:1628:libxl__destroy_domid: 
libxl__destroy_device_model failed for 5
libxl: error: libxl.c:1591:libxl__destroy_domid: non-existant domain 5
libxl: error: libxl.c:1549:domain_destroy_callback: unable to destroy 
guest with domid 5
libxl: error: libxl.c:1476:domain_destroy_cb: destruction of domain 5 failed


An example config that triggers this issue:

name='router.internal.tomjepp.uk'
builder='hvm'
vcpus=2
memory=512
disk=[
'format=raw, vdev=hda, access=rw, 
target=/dev/vg_ssd/vm_router.internal.tomjepp.uk_boot',
]
vif=[
'mac=00:16:3e:1a:7a:06, bridge=xenbr4094',
'mac=00:16:3e:c3:b8:ec, bridge=xenbr5'
]
boot='c'
vnc=1
vnclisten='127.0.0.1'
vncdisplay=1
keymap='en-gb'
usb=1
usbdevice='tablet'

-- System Information:
Debian Release: stretch/sid
   APT prefers testing
   APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 4.2.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

(I had to copy & paste this from a saved reportbug file, let me know if 
you need anything else)

On Wed, 2015-11-18 at 23:07 +0000, Thomas Jepp wrote:
> 
> [...]
> xc: error: Could not open kernel image
'/usr/lib/xen/boot/hvmloader' (2 = No such file or directory): Internal
error
This is the wrong path, in the Debian packages it should be?/usr/lib/xen-
4.6/boot/hvmloader (and this should be arranged by the packaging, i.e. it
is not a configuration error on your part).

However not only is the toolstack using the wrong path but the file seems
to be missing from the package entirely according to
https://packages.debian.org/sid/amd64/xen-utils-4.6/filelist

(cf?https://packages.debian.org/sid/amd64/xen-utils-4.4/filelist?which
contains?/usr/lib/xen-4.4/boot/hvmloader).

Ian.

On 19.11.2015 11:00, Ian Campbell wrote:
> On Wed, 2015-11-18 at 23:07 +0000, Thomas Jepp wrote:
>>
>> [...]
>> xc: error: Could not open kernel image
'/usr/lib/xen/boot/hvmloader' (2 = No such file or directory): Internal
error
> 
> This is the wrong path, in the Debian packages it should be /usr/lib/xen-
> 4.6/boot/hvmloader (and this should be arranged by the packaging, i.e. it
> is not a configuration error on your part).
> 
> However not only is the toolstack using the wrong path but the file seems
> to be missing from the package entirely according to
> https://packages.debian.org/sid/amd64/xen-utils-4.6/filelist
> 
> (cf https://packages.debian.org/sid/amd64/xen-utils-4.4/filelist which
> contains /usr/lib/xen-4.4/boot/hvmloader).
Looks like @XENFIRMWAREDIR@ needs to be influenced in the right way... Though I
cannot figure out a way less brute than to meddle with configure directly. That
feels wrong somehow...

-Stefan
> 
> Ian.
> 
> _______________________________________________
> Pkg-xen-devel mailing list
> Pkg-xen-devel at lists.alioth.debian.org
> http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/pkg-xen-devel
> 

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On 19.11.2015 11:00, Ian Campbell wrote:
> On Wed, 2015-11-18 at 23:07 +0000, Thomas Jepp wrote:
>>
>> [...]
>> xc: error: Could not open kernel image
'/usr/lib/xen/boot/hvmloader' (2 = No such file or directory): Internal
error
> 
> This is the wrong path, in the Debian packages it should be /usr/lib/xen-
> 4.6/boot/hvmloader (and this should be arranged by the packaging, i.e. it
> is not a configuration error on your part).
> 
> However not only is the toolstack using the wrong path but the file seems
> to be missing from the package entirely according to
> https://packages.debian.org/sid/amd64/xen-utils-4.6/filelist
> 
So FWIW the attached patch gets me hvmloader into the right place _and_ also
reflects the correct paths in the generated libxenlight.pc which otherwise would
likely cause the next round of issues. @XENFIRMWAREDIR@ in config/Paths.mk.in
was part of the same change to add pkg-config files.

commit babeca328413baebfdca366a5b17c06acf4295e8
Author: Wei Liu <wei.liu2 at citrix.com>
Date:   Fri Jan 9 14:32:18 2015 +0000

    libxl: provide xenlight.pc

Still not really sure this is the supposed way to set things right. There does
not seem to be a better way to override the firmware directory (as far as I can
see)...

-Stefan
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Your message dated Sun, 24 Jan 2016 16:40:48 +0000
with message-id <E1aNNia-0004ny-R9 at franck.debian.org>
and subject line Bug#805508: fixed in xen 4.6.0-1+nmu1
has caused the Debian Bug report #805508,
regarding xen: Unable to create HVM domUs
to be marked as done.

This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.

(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact owner at bugs.debian.org
immediately.)


-- 
805508: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=805508
Debian Bug Tracking System
Contact owner at bugs.debian.org with problems
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