Bug 1341984

Summary:	virt-get-kernel prompts an 'invalid value' error when using --format auto
Product:	Red Hat Enterprise Linux 7	Reporter:	Xianghua Chen <xchen>
Component:	libguestfs	Assignee:	Pino Toscano <ptoscano>
Status:	CLOSED ERRATA	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.3	CC:	ptoscano, rjones, wshi
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Linux
Whiteboard:
Fixed In Version:	libguestfs-1.32.5-4.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-03 18:00:48 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Xianghua Chen 2016-06-02 08:31:56 UTC

Description of problem:
 virt-get-kernel prompts an 'invalid value' error when using --format auto.


Version-Release number of selected component (if applicable):
libguestfs-1.32.4-3.el7.aarch64
libguestfs-tools-c-1.32.4-3.el7.x86_64

How reproducible:
Always

Steps to Reproduce:
1.  Prepare an rhel7 image:  rhel7.1-sr1.qcow2
2.  # virt-get-kernel --add rhel7.1-sr1.qcow2  --format auto -v -x
libguestfs: trace: set_verbose true
libguestfs: trace: set_verbose = 0
libguestfs: trace: add_drive "/home/xchen/my-images/rhel7.1-sr1.qcow2" "readonly:true" "format:auto" "protocol:file"
libguestfs: creating COW overlay to protect original drive content
libguestfs: trace: get_tmpdir
libguestfs: trace: get_tmpdir = "/tmp"
libguestfs: trace: disk_create "/tmp/libguestfstyNuRg/overlay1" "qcow2" -1 "backingfile:/home/xchen/my-images/rhel7.1-sr1.qcow2" "backingformat:auto"
libguestfs: trace: disk_create = -1 (error)
libguestfs: trace: add_drive = -1 (error)
virt-get-kernel: error: libguestfs error: invalid value for backingformat 
parameter 'auto'
libguestfs: trace: close
libguestfs: closing guestfs handle 0x1fc82e0 (state 0)
libguestfs: command: run: rm
libguestfs: command: run: \ -rf /tmp/libguestfstyNuRg


Actual results:
virt-get-kernel: error: libguestfs error: invalid value for backingformat
parameter 'auto

Expected results:
virt-get-kernel should auto-detect the format of the disk image and can get kernel and ramdisk from guests successfully.
Or,this option  should be deleted from man page if it is not actually provided.

Additional info:

Comment 1 Pino Toscano 2016-06-08 14:19:34 UTC

Fixed upstream with
https://github.com/libguestfs/libguestfs/commit/35fa14152245bcae2c0842abf120cd4ec7bd098c
which is in libguestfs >= 1.33.36.

Comment 3 Xianghua Chen 2016-06-28 05:22:55 UTC

Verified with the packages:
libguestfs-1.32.5-6.el7.x86_64

Verify steps:
1.  Prepare an rhel7 image:  RHEL-Server-7.2-64-hvm.raw
2.  # virt-get-kernel --add  RHEL-Server-7.2-64-hvm.raw --format auto
download: /boot/vmlinuz-3.10.0-327.el7.x86_64 -> ./vmlinuz-3.10.0-327.el7.x86_64
download: /boot/initramfs-3.10.0-327.el7.x86_64.img -> ./initramfs-3.10.0-327.el7.x86_64.img

It finished successfully.

So verified.

Comment 5 errata-xmlrpc 2016-11-03 18:00:48 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2016-2576.html