On 11/9/18 3:00 AM, Nikolay Shirokovskiy wrote:
> Disable external snapshot of readonly disk for inactive domains
> as this operation is not very useful. As to active domains
> such snapshot was not possible before already but error message was
> not helpful so now it will be better.
>
> Signed-off-by: Nikolay Shirokovskiy <nshirokovs...@virtuozzo.com>
> ---
>
> Diff from v1 [1]
> ================
>
> - move check to qemuDomainSnapshotPrepareDiskExternal
> - disable such snapshot for inactive domain as well
>
>
> [1] [PATCH] qemu: snapshot: better error for active external readonly disk
> https://www.redhat.com/archives/libvir-list/2018-October/msg01322.html
> continues in
> https://www.redhat.com/archives/libvir-list/2018-November/msg00265.html
>
>
> src/qemu/qemu_driver.c | 7 +++++++
> 1 file changed, 7 insertions(+)
>
Do you mind if I "merge" some details from the first patch on this to
generate the following commit message?:
Disable external snapshot of a readonly disk for domains as
this operation is not very useful. Such a snapshot is not
possible for active domains but the error message from QEMU
is more cryptic:
error: internal error: unable to execute QEMU command 'transaction':
Could not create file: Permission denied
This error at least makes the error more understandable for
active domains and disallows for inactive domains as well.
Reviewed-by: John Ferlan <jfer...@redhat.com>
John
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