Re: hvm domus on netbsd-10 dom0 zvol

["Hauke Fath (SPG)" <hf%spg.tu-darmstadt.de@localhost>]

On 2024-07-11 17:49, Brad Spencer wrote:
> I believe that the "dsk" device must be used in a Xen
> config to access a zvol for the purposes of presenting it to the guest.
> That is, make sure that you use the block device and not the character
> device.

xl doesn't like the block device:

# xl -vv create -c arch-stick.conf
Parsing config from arch-stick.conf
libxl: detail: libxl_create.c:671:libxl__domain_make: passthrough: disabled
libxl: error: libxl_device.c:437:libxl__device_disk_set_backend: Disk 
vdev=hda failed to stat: phy:/dev/zvol/dsk/tank/arch-stick: No such file 
or directory
libxl: error: libxl_create.c:1331:initiate_domain_create: Domain 
12:Unable to set disk defaults for disk 0
libxl: error: libxl_domain.c:354:libxl_domain_info: Domain 12:Getting 
domain info: No such process
libxl: error: libxl_domain.c:1179:libxl__destroy_domid: Domain 
12:Non-existant domain
libxl: error: libxl_domain.c:1133:domain_destroy_callback: Domain 
12:Unable to destroy guest
libxl: error: libxl_domain.c:1060:domain_destroy_cb: Domain 
12:Destruction of domain failed
# cat /var/log/xen/qemu-dm-arch-stick.log
char device redirected to /dev/pts/4 (label serial0)
VNC server running on 127.0.0.1:5901
qemu-system-i386: failed to create 'qdisk' device '5632': no dev parameter
brconfig: bn1 is not a bridge
qemu-system-i386: network script /etc/pkg/xen/scripts/qemu-ifup failed 
with status 256
qemu-system-i386: terminating on signal 1 from pid 6664 (<unknown process>)
# ls -l /dev/zvol/{,r}dsk/tank/arch-stick
brw-------  1 root  wheel       190, 2 Jul 11 12:09 
/dev/zvol/dsk/tank/arch-stick
crw-------  1 root  wheel       190, 2 Jul 11 12:17 
/dev/zvol/rdsk/tank/arch-stick
#

The DomU configuration has

type = "hvm"
name = "arch-stick"
memory = 2048
vcpus = 2
vif = [ 'mac=00:16:3e:6c:4b:11, bridge=bridge0' ]
disk =	[ 'format=raw, vdev=hda, access=rw, 
target=phy:/dev/zvol/dsk/tank/arch-stick' ]

Cheerio,
Hauke

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