On Tuesday, 21 November 2017 15:36:02 CET David Kaylor wrote:
On Tue, Nov 21, 2017 at 3:55 AM, Pino Toscano <ptoscano@redhat.com> wrote:
Hi,
On Monday, 20 November 2017 22:57:04 CET David Kaylor wrote:
I was trying out virt-builder and noticed that in some directories I receive an error when the image is resized.
For example, if I run the following command from my home directory it works fine:
virt-builder rhel-7.4 --size 10G --output test.img
If I run the same command from /tmp or /vms (my default libvirt pool), I see the following in my verbose output:
virt-resize '--verbose' '--format' 'raw' '--output-format' 'raw' '--expand' '/dev/sda3' '--unknown-filesystems' 'error' 'test.img' 'test.img' command line: virt-resize --verbose --format raw --output-format raw --expand /dev/sda3 --unknown-filesystems error test.img test.img virt-resize: error: you cannot use the same disk image for input and output
Am I doing something wrong or is this possibly a bug? The host I am running virt-builder on is Fedora 27.
The only thing it comes into my mind is that there is already a file called "test.img" in the directories where it fails.
Can you please check that, and provide also a full log virt-builder with -v -x?
Thanks, -- Pino Toscano
Thanks, Pino. Attached is the requested log. A few other observations:
In most directories, I can run the command successfully whether a file of the same name is present or not.
Looking at the verbose output, it appears that a randomly-generated name in /var/tmp is used for the indisk. Example:
virt-resize --verbose --format raw --output-format raw --expand /dev/sda3 --unknown-filesystems error /var/tmp/vbaf3053.img test.img
For directories where it fails, both the indisk and outdisk are the same:
virt-resize --verbose --format raw --output-format raw --expand /dev/sda3 --unknown-filesystems error test.img test.img
Hmm... can you please paste the output of `findmnt --df`? In addition to that, do /tmp or /vms (mentioned above by you) have any special mount point (or free space)? What's the exact version of libguestfs? (`rpm -q libguestfs`) -- Pino Toscano