Re: [libvirt] server side copy from one volume to another
On Tuesday, 18 April 2017 13:03:11 CEST Vasiliy Tolstov wrote:
2017-04-18 8:39 GMT+03:00 Michal Privoznik
<mprivozn(a)redhat.com>:
> s that right? Here I'm successfully cloning a volume across two storage pools:
Yes, it works but....
Source image:
image: /var/lib/libvirt/images/sda/143177
file format: qcow2
virtual size: 5.0G (5368709120 bytes)
disk size: 902M
cluster_size: 65536
Format specific information:
compat: 0.10
refcount bits: 16
Dest image:
image: /var/lib/libvirt/images/sda/test
file format: qcow2
virtual size: 5.0G (5368709120 bytes)
disk size: 902M
cluster_size: 65536
Format specific information:
compat: 0.10
refcount bits: 16
But
-rw------- 1 root 908M Apr 18 13:59 143177
-rw------- 1 root 902M Apr 18 13:59 test
Why size is changed on destination image? In case of cp
--spwarse=always size does not changed.
As Michal and Daniel said, this should not be a problem. Also, you can
check the content is the same using virt-diff (part of libguestfs):
# virt-diff \
-a /var/lib/libvirt/images/sda/143177 \
-A /var/lib/libvirt/images/sda/test > log
Most probably log should be empty, since the actual content of the
image did not change.
--
Pino Toscano
Attachments:
- signature.asc (application/pgp-signature — 819 bytes)