Note: This bug is displayed in read-only format because
the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Description of problem:
No error messages output if append '--format qcow2' after '-a guest.img', but if i put '--format qcow2' before '-a guest.img', virt-sysprep will detect the image format and print a error.
Version-Release number of selected component (if applicable):
libguestfs-1.27.39-1.1.el7
How reproducible:
100%
Steps to Reproduce:
1. Create a raw format guest image: rhel6.6.img
2. #virt-sysprep --operations net-hostname -a rhel6.6.img --format qcow2
[ 0.0] Examining the guest ...
[ 7.0] Performing "net-hostname" ...
Here is the trace information:
[ 0.0] Examining the guest ...
libguestfs: trace: set_verbose true
libguestfs: trace: set_verbose = 0
libguestfs: create: flags = 0, handle = 0x1d5fcf0, program = virt-sysprep
libguestfs: trace: add_drive "rhel6.6.img" "readonly:false" "protocol:file" "discard:besteffort"
libguestfs: trace: add_drive = 0
libguestfs: trace: launch
..........................................
supermin: if-newer: output does not need rebuilding
libguestfs: [00081ms] finished building supermin appliance
libguestfs: trace: disk_create "/tmp/libguestfsteZwlw/overlay1" "qcow2" -1 "backingfile:/var/tmp/.guestfs-0/appliance.d/root" "backingformat:raw"
libguestfs: command: run: qemu-img
libguestfs: command: run: \ create
libguestfs: command: run: \ -f qcow2
libguestfs: command: run: \ -o backing_file=/var/tmp/.guestfs-0/appliance.d/root,backing_fmt=raw
libguestfs: command: run: \ /tmp/libguestfsteZwlw/overlay1
Formatting '/tmp/libguestfsteZwlw/overlay1', fmt=qcow2 size=4294967296 backing_file='/var/tmp/.guestfs-0/appliance.d/root' backing_fmt='raw' encryption=off cluster_size=65536 lazy_refcounts=off
libguestfs: trace: disk_create = 0
libguestfs: [00148ms] create libvirt XML
libguestfs: trace: disk_format "rhel6.6.img"
libguestfs: command: run: qemu-img
libguestfs: command: run: \ --help
libguestfs: which_parser: g->qemu_img_info_parser = 1
libguestfs: command: run: qemu-img
libguestfs: command: run: \ info
libguestfs: command: run: \ --output json
libguestfs: command: run: \ /dev/fd/9
libguestfs: parse_json: qemu-img info JSON output:\n{\n "virtual-size": 10486808576, \n "filename": "/dev/fd/9", \n "format": "raw", \n "actual-size": 10486808576\n}\n\n
libguestfs: trace: disk_format = "raw"
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
3. #virt-sysprep --operations net-hostname --format qcow2 -a rhel6.6.img
[ 0.0] Examining the guest ...
Fatal error: exception Guestfs.Error("could not create appliance through libvirt.
Try running qemu directly without libvirt using this environment variable:
export LIBGUESTFS_BACKEND=direct
Original error from libvirt: internal error: process exited while connecting to monito
Here is the trace information:
[ 0.0] Examining the guest ...
libguestfs: trace: set_verbose true
libguestfs: trace: set_verbose = 0
libguestfs: create: flags = 0, handle = 0x25d4cf0, program = virt-sysprep
libguestfs: trace: add_drive "rhel6.6.img" "readonly:false" "format:qcow2" "protocol:file" "discard:besteffort"
libguestfs: trace: add_drive = 0
libguestfs: trace: launch
......................................................
libguestfs: command: run: \ --if-newer
libguestfs: command: run: \ --lock /var/tmp/.guestfs-0/lock
libguestfs: command: run: \ --copy-kernel
libguestfs: command: run: \ -f ext2
libguestfs: command: run: \ --host-cpu x86_64
libguestfs: command: run: \ /usr/lib64/guestfs/supermin.d
libguestfs: command: run: \ -o /var/tmp/.guestfs-0/appliance.d
supermin: version: 5.1.9
supermin: rpm: detected RPM version 4.11
supermin: package handler: fedora/rpm
supermin: acquiring lock on /var/tmp/.guestfs-0/lock
supermin: if-newer: output does not need rebuilding
libguestfs: [00058ms] finished building supermin appliance
libguestfs: trace: disk_create "/tmp/libguestfsfGdQiJ/overlay1" "qcow2" -1 "backingfile:/var/tmp/.guestfs-0/appliance.d/root" "backingformat:raw"
libguestfs: command: run: qemu-img
libguestfs: command: run: \ create
libguestfs: command: run: \ -f qcow2
libguestfs: command: run: \ -o backing_file=/var/tmp/.guestfs-0/appliance.d/root,backing_fmt=raw
libguestfs: command: run: \ /tmp/libguestfsfGdQiJ/overlay1
Formatting '/tmp/libguestfsfGdQiJ/overlay1', fmt=qcow2 size=4294967296 backing_file='/var/tmp/.guestfs-0/appliance.d/root' backing_fmt='raw' encryption=off cluster_size=65536 lazy_refcounts=off
libguestfs: trace: disk_create = 0
libguestfs: [00112ms] create libvirt XML
libguestfs: trace: get_cachedir
libguestfs: trace: get_cachedir = "/var/tmp"
Actual results:
Step 2 have no message output, it seems virt-sysprep use auto-detection model even though you append '--format qcow2' at the end of the command line.
Expected results:
Step 2 have a error message output, because you specify '--format qcow2', but guest.img is a raw format file
Additional info:
Comment 2Richard W.M. Jones
2014-09-13 08:11:12 UTC
(In reply to Lingfei Kong from comment #0)
> Actual results:
> Step 2 have no message output, it seems virt-sysprep use auto-detection
> model even though you append '--format qcow2' at the end of the command line.
As it says in the manual page, you have to put the --format before
the -a parameter:
--format raw|qcow2|..
--format auto
The default for the -a option is to auto-detect the format of the
disk image. Using this forces the disk format for -a options which
follow on the command line. Using --format auto switches back to
auto-detection for subsequent -a options.
For example:
virt-sysprep --format raw -a disk.img
forces raw format (no auto-detection) for "disk.img".
virt-sysprep --format raw -a disk.img --format auto -a another.img
forces raw format (no auto-detection) for "disk.img" and reverts to
auto-detection for "another.img".
However we should probably give an error if there is a useless '--format'
after the last -a parameter. I will see if this is a low-risk change.
Comment 3Richard W.M. Jones
2014-09-13 09:52:03 UTC
Verify with libguestfs-1.28.1-1.2.el7
Steps to verify:
#virt-sysprep --hostname unused -a rhel.img --format raw
virt-sysprep: error: --format parameter must appear before -a parameter
If reporting bugs, run virt-sysprep with debugging enabled and include the
complete output:
virt-sysprep -v -x [...]
#virt-sysprep --hostname unused -a rhel.img --format qcow2
virt-sysprep: error: --format parameter must appear before -a parameter
If reporting bugs, run virt-sysprep with debugging enabled and include the
complete output:
virt-sysprep -v -x [...]
There is a proper error messages, so bug is fixed.
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
Description of problem: No error messages output if append '--format qcow2' after '-a guest.img', but if i put '--format qcow2' before '-a guest.img', virt-sysprep will detect the image format and print a error. Version-Release number of selected component (if applicable): libguestfs-1.27.39-1.1.el7 How reproducible: 100% Steps to Reproduce: 1. Create a raw format guest image: rhel6.6.img 2. #virt-sysprep --operations net-hostname -a rhel6.6.img --format qcow2 [ 0.0] Examining the guest ... [ 7.0] Performing "net-hostname" ... Here is the trace information: [ 0.0] Examining the guest ... libguestfs: trace: set_verbose true libguestfs: trace: set_verbose = 0 libguestfs: create: flags = 0, handle = 0x1d5fcf0, program = virt-sysprep libguestfs: trace: add_drive "rhel6.6.img" "readonly:false" "protocol:file" "discard:besteffort" libguestfs: trace: add_drive = 0 libguestfs: trace: launch .......................................... supermin: if-newer: output does not need rebuilding libguestfs: [00081ms] finished building supermin appliance libguestfs: trace: disk_create "/tmp/libguestfsteZwlw/overlay1" "qcow2" -1 "backingfile:/var/tmp/.guestfs-0/appliance.d/root" "backingformat:raw" libguestfs: command: run: qemu-img libguestfs: command: run: \ create libguestfs: command: run: \ -f qcow2 libguestfs: command: run: \ -o backing_file=/var/tmp/.guestfs-0/appliance.d/root,backing_fmt=raw libguestfs: command: run: \ /tmp/libguestfsteZwlw/overlay1 Formatting '/tmp/libguestfsteZwlw/overlay1', fmt=qcow2 size=4294967296 backing_file='/var/tmp/.guestfs-0/appliance.d/root' backing_fmt='raw' encryption=off cluster_size=65536 lazy_refcounts=off libguestfs: trace: disk_create = 0 libguestfs: [00148ms] create libvirt XML libguestfs: trace: disk_format "rhel6.6.img" libguestfs: command: run: qemu-img libguestfs: command: run: \ --help libguestfs: which_parser: g->qemu_img_info_parser = 1 libguestfs: command: run: qemu-img libguestfs: command: run: \ info libguestfs: command: run: \ --output json libguestfs: command: run: \ /dev/fd/9 libguestfs: parse_json: qemu-img info JSON output:\n{\n "virtual-size": 10486808576, \n "filename": "/dev/fd/9", \n "format": "raw", \n "actual-size": 10486808576\n}\n\n libguestfs: trace: disk_format = "raw" libguestfs: trace: get_cachedir libguestfs: trace: get_cachedir = "/var/tmp" 3. #virt-sysprep --operations net-hostname --format qcow2 -a rhel6.6.img [ 0.0] Examining the guest ... Fatal error: exception Guestfs.Error("could not create appliance through libvirt. Try running qemu directly without libvirt using this environment variable: export LIBGUESTFS_BACKEND=direct Original error from libvirt: internal error: process exited while connecting to monito Here is the trace information: [ 0.0] Examining the guest ... libguestfs: trace: set_verbose true libguestfs: trace: set_verbose = 0 libguestfs: create: flags = 0, handle = 0x25d4cf0, program = virt-sysprep libguestfs: trace: add_drive "rhel6.6.img" "readonly:false" "format:qcow2" "protocol:file" "discard:besteffort" libguestfs: trace: add_drive = 0 libguestfs: trace: launch ...................................................... libguestfs: command: run: \ --if-newer libguestfs: command: run: \ --lock /var/tmp/.guestfs-0/lock libguestfs: command: run: \ --copy-kernel libguestfs: command: run: \ -f ext2 libguestfs: command: run: \ --host-cpu x86_64 libguestfs: command: run: \ /usr/lib64/guestfs/supermin.d libguestfs: command: run: \ -o /var/tmp/.guestfs-0/appliance.d supermin: version: 5.1.9 supermin: rpm: detected RPM version 4.11 supermin: package handler: fedora/rpm supermin: acquiring lock on /var/tmp/.guestfs-0/lock supermin: if-newer: output does not need rebuilding libguestfs: [00058ms] finished building supermin appliance libguestfs: trace: disk_create "/tmp/libguestfsfGdQiJ/overlay1" "qcow2" -1 "backingfile:/var/tmp/.guestfs-0/appliance.d/root" "backingformat:raw" libguestfs: command: run: qemu-img libguestfs: command: run: \ create libguestfs: command: run: \ -f qcow2 libguestfs: command: run: \ -o backing_file=/var/tmp/.guestfs-0/appliance.d/root,backing_fmt=raw libguestfs: command: run: \ /tmp/libguestfsfGdQiJ/overlay1 Formatting '/tmp/libguestfsfGdQiJ/overlay1', fmt=qcow2 size=4294967296 backing_file='/var/tmp/.guestfs-0/appliance.d/root' backing_fmt='raw' encryption=off cluster_size=65536 lazy_refcounts=off libguestfs: trace: disk_create = 0 libguestfs: [00112ms] create libvirt XML libguestfs: trace: get_cachedir libguestfs: trace: get_cachedir = "/var/tmp" Actual results: Step 2 have no message output, it seems virt-sysprep use auto-detection model even though you append '--format qcow2' at the end of the command line. Expected results: Step 2 have a error message output, because you specify '--format qcow2', but guest.img is a raw format file Additional info: