1146815 – virt-v2v prints warning: /files/etc/fstab/8/spec references unknown device "cdrom"

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Bug 1146815 - virt-v2v prints warning: /files/etc/fstab/8/spec references unknown device "cdrom"

Summary: virt-v2v prints warning: /files/etc/fstab/8/spec references unknown device "c...

Keywords:
Status:	CLOSED ERRATA
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	libguestfs
Sub Component:
Version:	7.1
Hardware:	Unspecified
OS:	Unspecified
Priority:	medium
Severity:	medium
Target Milestone:	rc
Target Release:	---
Assignee:	Richard W.M. Jones
QA Contact:	Virtualization Bugs
Docs Contact:
URL:
Whiteboard:	V2V
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2014-09-26 07:11 UTC by tingting zheng
Modified:	2015-03-05 13:45 UTC (History)
CC List:	7 users (show)
Fixed In Version:	libguestfs-1.27.56-1.1.el7
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2015-03-05 13:45:40 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)
detailed log file (487.21 KB, text/plain) 2014-09-26 07:11 UTC, tingting zheng	no flags	Details
View All

Links
System	ID	Private	Priority	Status	Summary	Last Updated
Red Hat Product Errata	RHBA-2015:0303	0	normal	SHIPPED_LIVE	libguestfs bug fix and enhancement update	2015-03-05 17:34:44 UTC

Description tingting zheng 2014-09-26 07:11:03 UTC

Created attachment 941416 [details]
detailed log file

Description
virt-v2v prints warning: /files/etc/fstab/8/spec references unknown device "cdrom"

Version:
virt-v2v-1.27.53-1.1.el7.x86_64
libguestfs-winsupport-7.1-4.el7.x86_64
libguestfs-1.27.53-1.1.el7.x86_64
virtio-win-1.7.2-1.el7.noarch

How reproducible:
100%

Steps to Reproduce:
1.Before conversion,prepare a vm with a cdrom device specified in fstab
in guest,fstab entry:
/dev/cdrom   /media/cdrom    auto    exec  0 0

2.Use virt-v2v to convert the guest.
# virt-v2v -o rhev -os 10.66.6.8:/var/v2v_export --network rhevm rhel6.6-tzheng
[   0.0] Opening the source -i libvirt rhel6.6-tzheng
[   0.0] Creating an overlay to protect the source from being modified
[   0.0] Opening the overlay
[   9.0] Initializing the target -o rhev -os 10.66.6.8:/var/v2v_export
virt-v2v: warning: cannot write files to the NFS server as 36:36, even 
though we appear to be running as root. This probably means the NFS client 
or idmapd is not configured properly.

You will have to chown the files that virt-v2v creates after the run, 
otherwise RHEV-M will not be able to import the VM.
[   9.0] Inspecting the overlay
[  26.0] Checking for sufficient free disk space in the guest
[  26.0] Estimating space required on target for each disk
[  26.0] Converting Red Hat Enterprise Linux Server release 6.6 Beta (Santiago) to run on KVM
virt-v2v: warning: /files/etc/fstab/8/spec references unknown device
"cdrom".  You may have to fix this entry manually after conversion.

This guest has virtio drivers installed.
[ 100.0] Mapping filesystem data to avoid copying unused and blank areas
[ 101.0] Closing the overlay
[ 102.0] Copying disk 1/1 to /tmp/v2v.ceCgyF/e4883354-fa70-4314-bcc0-6ee12c39e3a2/images/e844160d-b559-4858-a03b-566de70c5ae2/3b73f780-03a2-4609-9135-bde0e892edf5 (raw)
    (100.00/100%)
[ 390.0] Creating output metadata
[ 390.0] Finishing off

3.After conversion,check guest file /etc/fstab
/dev/cdrom   /media/cdrom    auto    exec  0 0

Actual results：
virt-v2v prints warning: /files/etc/fstab/8/spec references unknown device "cdrom". 
 You may have to fix this entry manually after conversion.

Expected results:
There should be no warning as actual results.

Additional info:

Comment 2 Richard W.M. Jones 2014-09-26 18:35:10 UTC

It seems likely that the old virt-v2v printed the same
warning.  However I've suppressed the warning in virt-v2v >= 1.27.56:

https://github.com/libguestfs/libguestfs/commit/5498d021d012522c695ddcaa8ade9cb0ede2a024

Comment 4 zhoujunqin 2014-09-30 09:24:53 UTC

I can reproduce it with package:
Then try to verify it with new build:
libguestfs-1.27.56-1.1.el7.x86_64
virt-v2v-1.27.56-1.1.el7.x86_64

Steps:
1.Before conversion,prepare a vm with a cdrom device specified in fstab
in guest,fstab entry:
/dev/cdrom         /media/CDROM   auto exec  0  0

2.Use virt-v2v to convert the guest.
# virt-v2v  -o rhev -os 10.66.90.115:/vol/v2v_auto/auto_export  --network rhevm rhel6.6-tzheng -on rhel6.6-tzheng-301
[   0.0] Opening the source -i libvirt rhel6.6-tzheng
[   0.0] Creating an overlay to protect the source from being modified
[   0.0] Opening the overlay
[   6.0] Initializing the target -o rhev -os 10.66.90.115:/vol/v2v_auto/auto_export
virt-v2v: warning: cannot write files to the NFS server as 36:36, even 
though we appear to be running as root. This probably means the NFS client 
or idmapd is not configured properly.

You will have to chown the files that virt-v2v creates after the run, 
otherwise RHEV-M will not be able to import the VM.
[   6.0] Inspecting the overlay
[  20.0] Checking for sufficient free disk space in the guest
[  20.0] Estimating space required on target for each disk
[  20.0] Converting Red Hat Enterprise Linux Server release 6.6 Beta (Santiago) to run on KVM
This guest has virtio drivers installed.
[  88.0] Mapping filesystem data to avoid copying unused and blank areas
[  89.0] Closing the overlay
[  89.0] Copying disk 1/1 to /tmp/v2v.HwWwYk/46adae8a-63c1-40f8-b25a-f02deb1a5160/images/f87534cc-554c-46bf-ad30-189080100b90/a7f24dff-f784-444b-8af1-985b511acacb (raw)
    (100.00/100%)
[ 152.0] Creating output metadata
[ 152.0] Finishing off

3.After conversion,check guest file /etc/fstab
/dev/cdrom   /media/CDROM    auto    exec  0 0

Since no warning like "/files/etc/fstab/8/spe" showing, move this bug from ON_QA to VERIFIED.

Comment 6 errata-xmlrpc 2015-03-05 13:45:40 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/RHBA-2015-0303.html

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