Running unik daemon on Windows: Error: Input/output error during read on /dev/loop0\nError: Operation not permitted during write on /dev/loop0

[hsluoyz]

C:\Users\luo>unik daemon --debug
time="2018-06-25T00:16:30+08:00" level=info msg="daemon started" config={{[] [] [] [{my-vbox VirtualBox Host-Only Ethernet Adapter host_only}] [] [] [] [] []} 0.0.0}
time="2018-06-25T00:16:30+08:00" level=info msg="using container versions" versions=map[boot-creator:d0665c8793b16c51 compilers-rump-c-hw:1954dce79e407724 qemu-util:6f5922561bbb86e3 compilers-osv-java:14f2183e5cb49482 compilers-osv-dynamic:59ba07ca2f12ecaa compilers-mirage-ocaml-ukvm:2c35c23771682e9a compilers-rump-base-xen:f841298dae4340f7 compilers-rump-nodejs-hw-no-stub:baebfe68f3283190 compilers-rump-c-xen:65c2c7316ad6fc77 compilers-mirage-ocaml-xen:0cd46f5253c6ca8a compilers-includeos-cpp-hw:694e22e023dbbbc8 compilers-rump-python3-hw-no-stub:81a494acc94d7827 compilers-rump-python3-xen:1496a60a071e79e1 compilers-rump-base-hw:8cd85d4a7ee1009b compilers-rump-go-hw:d1bfbc13602e306d compilers-rump-python3-hw:22bc5378af6e099d compilers-includeos-cpp-common:8de1311f7b1365d9 compilers-rump-base-common:2eb72d1b386ce2a4 compilers-rump-nodejs-hw:b5029ddcc8731a25 vsphere-client:a9538c7c242acbef image-creator:fa560ac11cecae33 compilers-rump-nodejs-xen:2fbc447253ba19b8 compilers-rump-java-hw:e8c77dc577b288d9 compilers-rump-java-xen:43365940a0dd610c rump-debugger-qemu:0a841d0bf71287e6 compilers-rump-go-xen:fe3335e71ed20510]
...

time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file vol\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file Godeps\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file Godeps.json\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file boot-creator-result.img.689419057\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file bootstrap_ec2.go\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file bootstrap_gcloud.go\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file bootstrap_nostub.go\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file bootstrap_udp.go\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 10 after adding file main.go\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 20 after adding file program\" "
time="2018-06-26T16:07:14+08:00" level=debug msg="time=\"2018-06-26T08:07:16Z\" level=debug msg=\"total size 47 after adding file program.bin\" "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=\"created sparse file\" imgFile=\"/opt/vol/boot.image.6c2e66c1-42ac-4ffb-86d8-3883b0d2b7ea\" size=61MiB "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=\"attaching sparse file\" imgFile=\"/opt/vol/boot.image.6c2e66c1-42ac-4ffb-86d8-3883b0d2b7ea\" "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=\"running losetup -f\" cmd=losetup device=\"/opt/vol/boot.image.6c2e66c1-42ac-4ffb-86d8-3883b0d2b7ea\" "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=\"device mapping to 'hda'\" "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=partitioning "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=\"running parted\" args=[mklabel msdos] device=\"/dev/loop0\" "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=error msg=\"parted failed\" args=[--script --machine /dev/loop0 mklabel msdos] err=\"exit status 1\" out=\"Error: Input/output error during read on /dev/loop0\\nError: Input/output error during read on /dev/loop0\\nError: Operation not permitted during write on /dev/loop0\\n\" "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=debug msg=\"running losetup\" args=[-d /dev/loop0] cmd=losetup "
time="2018-06-26T16:07:15+08:00" level=debug msg="time=\"2018-06-26T08:07:17Z\" level=fatal msg=\"exit status 1\" "
time="2018-06-26T16:07:15+08:00" level=error msg="running daemon failed: [cmd/daemon.go:86] daemon failed to initialize: {[daemon/daemon.go:107] initializing virtualbox provider: {[virtualbox/virtualbox_provider.go:49] deploying virtualbox instance listener: {[virtualbox/deploy_instance_listener.go:39] compiling instance listener source to unikernel: {[rump/rump-go.go:55] creating boot volume from kernel binary: {exit status 1}}}}}"
C:\Users\luo>

In order to clearly show the error, I extracted the faulting Docker command that unik invoked:

Microsoft Windows [Version 10.0.17134.112]
(c) 2018 Microsoft Corporation. All rights reserved.

C:\Users\luo>docker run --rm --privileged -v /dev/:/dev/ -v /c/Users/luo/AppData/Local/Temp/bootable-image-directory.593233002:/opt/vol/ --name=c17ee6e8-83a5-45f0-8769-ba44ae8acb93 projectunik/boot-creator:d0665c8793b16c51 -d /opt/vol/ -p program.bin -a {"rc":[{"bin":"program","argv":["-prefix","unik_virtualbox","-enablePersistence"]}],"net":{"if":"vio"}} -o boot-creator-result.img.375002817 -part=true
time="2018-06-26T14:14:21Z" level=debug msg="calling CreateBootImageWithSize" args="{rc:[{bin:program,argv:[-prefix,unik_virtualbox,-enablePersistence]}],net:{if:vio}}" imgFile="/opt/vol/boot.image.d07710ad-d6d2-4d2a-b182-769237e8d067" kernelFile="/opt/vol/program.bin" usePartitionTables=true
time="2018-06-26T14:14:21Z" level=debug msg="total size 10 after adding file vol"
time="2018-06-26T14:14:21Z" level=debug msg="total size 10 after adding file Godeps"
time="2018-06-26T14:14:21Z" level=debug msg="total size 10 after adding file Godeps.json"
time="2018-06-26T14:14:21Z" level=debug msg="total size 10 after adding file boot-creator-result.img.375002817"
time="2018-06-26T14:14:21Z" level=debug msg="total size 573 after adding file boot.image.5842ae65-7d6a-4a25-9454-e410ac012533"
time="2018-06-26T14:14:21Z" level=debug msg="total size 634 after adding file boot.image.a209c265-8313-49c0-bfe7-8c54e5a8056f"
time="2018-06-26T14:14:21Z" level=debug msg="total size 902 after adding file boot.image.c9a8495e-782a-4976-9542-d46d6bb9a273"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1030 after adding file boot.image.dd5039c0-35d5-4956-8763-aa9bd557ee03"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1030 after adding file bootstrap_ec2.go"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1030 after adding file bootstrap_gcloud.go"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1030 after adding file bootstrap_nostub.go"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1030 after adding file bootstrap_udp.go"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1030 after adding file main.go"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1040 after adding file program"
time="2018-06-26T14:14:21Z" level=debug msg="total size 1067 after adding file program.bin"
time="2018-06-26T14:14:29Z" level=debug msg="created sparse file" imgFile="/opt/vol/boot.image.d07710ad-d6d2-4d2a-b182-769237e8d067" size=1183MiB
time="2018-06-26T14:14:29Z" level=debug msg="attaching sparse file" imgFile="/opt/vol/boot.image.d07710ad-d6d2-4d2a-b182-769237e8d067"
time="2018-06-26T14:14:29Z" level=debug msg="running losetup -f" cmd=losetup device="/opt/vol/boot.image.d07710ad-d6d2-4d2a-b182-769237e8d067"
time="2018-06-26T14:14:29Z" level=debug msg="device mapping to 'hda'"
time="2018-06-26T14:14:29Z" level=debug msg=partitioning
time="2018-06-26T14:14:29Z" level=debug msg="running parted" args=[mklabel msdos] device="/dev/loop0"
time="2018-06-26T14:14:29Z" level=error msg="parted failed" args=[--script --machine /dev/loop0 mklabel msdos] err="exit status 1" out="Error: Input/output error during read on /dev/loop0\nError: Input/output error during read on /dev/loop0\nError: Operation not permitted during write on /dev/loop0\n"
time="2018-06-26T14:14:29Z" level=debug msg="running losetup" args=[-d /dev/loop0] cmd=losetup
time="2018-06-26T14:14:29Z" level=fatal msg="exit status 1"

C:\Users\luo>

Simply speaking, it seems that the parted --script --machine /dev/loop0 mklabel msdos command causes error in the container:

Error: Input/output error during read on /dev/loop0
Error: Operation not permitted during write on /dev/loop0

The faulty code is: (the code is running inside the container)

unik/pkg/os/device_linux.go

Lines 51 to 59 in c5c126a

	func runParted(device string, args ...string) ([]byte, error) {
	log.WithFields(log.Fields{"device": device, "args": args}).Debug("running parted")
	args = append([]string{"--script", "--machine", device}, args...)
	out, err := exec.Command("parted", args...).CombinedOutput()
	if err != nil {
	log.WithFields(log.Fields{"args": args, "err": err, "out": string(out)}).Error("parted failed")
	}
	return out, err
	}

Is there any advice on how to fix it? Thanks.