Tal Nisan has submitted this change and it was merged. Change subject: core: ImagesHandler - computeCowImageNeededSize() ...................................................................... core: ImagesHandler - computeCowImageNeededSize() When vdsm creates a COW volume with provided initial size the size is multiplied by 1.1 to prevent a case in which we won't have enough space. If the source is already COW we don't need the additional space. determineImageInitialSize() is used to calculate the initial size and in case that source/dest are both COW divides the space by 1.1 as we know that the source used space already includes the COW header. in change I9358478d9f the check for the source image format was mistakenly removed, leading to that even if the source image format is RAW we'll divide the initial size by 1.1. As some of the space is used by the QCOW header we may fail during the copy as we run out of space. Change-Id: I54923ca1526c39ee793270c28ace6402a558b04a Bug-Url: https://bugzilla.redhat.com/1438260 Signed-off-by: Liron Aravot <laravot(a)redhat.com&gt; --- M backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/storage/disk/image/ImagesHandler.java 1 file changed, 10 insertions(+), 7 deletions(-) Approvals: Tal Nisan: Verified; Looks good to me, approved Jenkins CI: Passed CI tests -- To view, visit https://gerrit.ovirt.org/75097 To unsubscribe, visit https://gerrit.ovirt.org/settings Gerrit-MessageType: merged Gerrit-Change-Id: I54923ca1526c39ee793270c28ace6402a558b04a Gerrit-PatchSet: 1 Gerrit-Project: ovirt-engine Gerrit-Branch: ovirt-engine-4.1 Gerrit-Owner: Liron Aravot <laravot(a)redhat.com&gt; Gerrit-Reviewer: Jenkins CI Gerrit-Reviewer: Tal Nisan <tnisan(a)redhat.com&gt;