[Xen-users] Error with DRBD9 and Xen 4.6.5 with HVM Guest

[Justin Pretorius <justin.pretorius@xxxxxxxxx>]

Hello

This is my first ever email list help request, apologies if I have not 
100% got the protocol correct.
I am currently using Xen on Ubuntu 16.04, and am using a number of PVM 
guests successfully using DRBD9 as primary root disk, but when testing 
an HVM PfSense (BSD) guest, I am having some issues.
DRBD9 is successfully set up and when creating the guest using the 
config as follows
disk=['drbd:disk1-firewall2,hda,w']

The guest will not create with the following info

xl -v create /etc/xen/firewall2.cfg

xc: detail: elf_parse_binary: phdr: paddr=0x100000 memsz=0x5b844
xc: detail: elf_parse_binary: memory: 0x100000 -> 0x15b844
xc: detail: VIRTUAL MEMORY ARRANGEMENT:
xc: detail:   Loader:   0000000000100000->000000000015b844
xc: detail:   Modules:  0000000000000000->0000000000000000
xc: detail:   TOTAL:    0000000000000000->000000001f800000
xc: detail:   ENTRY:    0000000000100630
xc: detail: PHYSICAL MEMORY ALLOCATION:
xc: detail:   4KB PAGES: 0x0000000000000200
xc: detail:   2MB PAGES: 0x00000000000000fb
xc: detail:   1GB PAGES: 0x0000000000000000
xc: detail: elf_load_binary: phdr 0 at 0x7f979ffaa000 -> 0x7f979fffbdd1
domainbuilder: detail: xc_dom_gnttab_hvm_seed: called, pfn=0xff000
libxl: error: libxl_dm.c:1872:device_model_spawn_outcome: domain 74 
device model: spawn failed (rc=-3)
libxl: error: libxl_create.c:1344:domcreate_devmodel_started: device 
model did not start: -3
libxl: error: libxl_dm.c:1987:kill_device_model: Device Model already exited
libxl: error: libxl.c:1610:libxl__destroy_domid: non-existant domain 74
libxl: error: libxl.c:1568:domain_destroy_callback: unable to destroy 
guest with domid 74
libxl: error: libxl.c:1495:domain_destroy_cb: destruction of domain 74 
failed
Contents of guest log

qemu-system-i386: -drive 
file=disk1-firewall2,if=ide,index=0,media=disk,format=raw,cache=writeback: 
Could not open 'disk1-firewall2': No such file or directory
Contents of hotplug log

disk1-firewall2: State change failed: (-12) Device is held open by someone
Command 'drbdsetup secondary disk1-firewall2' terminated with exit code 11

And the guest is not started

If i try to attach to dom 0 :

xl block-list 0
Vdev  BE  handle state evt-ch ring-ref BE-path

xl block-attach 0 'drbd:disk1-firewall2,hda,w'      (no errors or output)

xl block-list 0

Vdev  BE  handle state evt-ch ring-ref BE-path
768   0   0      4     102    8        /local/domain/0/backend/vbd/0/768

xl block-detach 0 768   (no errors or output)

xl block-list 0

Vdev  BE  handle state evt-ch ring-ref BE-path

So it mounts and unmounts fine manually, but not via the hotplug script?
any ideas?

Thanks
Justin

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