Bug 852334
Summary: | [Doc] RFE: Doc for virt-v2v can be confusing -> virt-v2v may install a new kernel | ||
---|---|---|---|
Product: | Red Hat Enterprise Linux 6 | Reporter: | Luc de Louw <ldelouw> |
Component: | doc-V2V_Guide | Assignee: | Jiri Herrmann <jherrman> |
Status: | CLOSED WONTFIX | QA Contact: | ecs-bugs |
Severity: | low | Docs Contact: | Platform Virt Docs <virt-docs> |
Priority: | low | ||
Version: | 6.3 | CC: | cwei, jherrman, mzhan, ptoscano, rbalakri, rjones, sgilson, tzheng |
Target Milestone: | rc | Keywords: | Documentation, FutureFeature, Triaged |
Target Release: | --- | ||
Hardware: | Unspecified | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Enhancement | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2016-02-19 15:19:25 UTC | Type: | Bug |
Regression: | --- | Mount Type: | --- |
Documentation: | --- | CRM: | |
Verified Versions: | Category: | --- | |
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
Cloudforms Team: | --- | Target Upstream Version: | |
Embargoed: | |||
Bug Depends On: | |||
Bug Blocks: | 1305375 |
Description
Luc de Louw
2012-08-28 08:33:36 UTC
This request was evaluated by Red Hat Product Management for inclusion in the current release of Red Hat Enterprise Linux. Since we are unable to provide this feature at this time, it has been proposed for the next release of Red Hat Enterprise Linux. This request was not resolved in time for the current release. Red Hat invites you to ask your support representative to propose this request, if still desired, for consideration in the next release of Red Hat Enterprise Linux. Hi Richard and Pino, I'd like to add a bit more detail on the 'virt-v2v may install a new kernel' [1] topic for the RHEL6 V2V Guide, and am hoping you can help with some questions... * In what situation would virt-v2v install a new kernel? Is it only when converting a VM using a Xen para-virtualized kernel? Also, I came across the following bit of info later in the guide; is it correct, and is this only circumstance when the new kernel install would happen?: "If your guest uses a Xen para-virtualized kernel (it would be called something like kernel-xen or kernel-xenU), virt-v2v will attempt to install a new kernel during the conversion process. You can avoid this requirement by installing a regular kernel, which will not reference a hypervisor in its name, alongside the Xen kernel prior to conversion. You should not make this newly installed kernel your default kernel, because Xen will not boot it. virt-v2v will make it the default during conversion." * Is there any way the user can opt out of the new kernel installation, ie. installing virtIO drivers on the existing kernel, etc? Many thanks, Dayle [1] ie. Step 1 in https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/6/html-single/V2V_Guide/index.html#idm37606992 Dayle, do you really want to update the documentation for virt-v2v in RHEL 6? We are strongly encouraging everyone to move to the RHEL 7 version (virt-v2v-1.28.1), and will soon publish an appliance that RHEL 6 customers can use (for free) to run the new virt-v2v on their existing RHEL 6 systems. I am inclined to close this as WONTFIX. ----- For the old version of virt-v2v: The paragraph "If your guest ..." is accurate for old virt-v2v. In old virt-v2v you can opt out of kernel installation by editing the configuration file, but if you do that, conversion will just fail. Fundamentally you need a non-Xen kernel in order to run guests on KVM, so if they are stuck with a particular Xen kernel there's no way the guest can be made to work on KVM. ----- For the new (RHEL 7) version of virt-v2v: It never installs a new kernel. Instead it checks the already installed kernels. If none of them is suitable, you'll get an error message and conversion will fail. If a kernel is suitable but it is not the currently selected boot kernel, then virt-v2v will change the selected boot kernel to the suitable one. We also publish guidance in the manual about the minimum versions of kernels and other packages required: http://libguestfs.org/virt-v2v.1.html#xen-paravirtualized-guests http://libguestfs.org/virt-v2v.1.html#enabling-virtio |