Re: [libvirt] [PATCH 02/14] qemuDomainDiskChangeSupported: Deny changing reservations

Couple of reasons for that: a) there's no monitor command to change path where the pr-helper connects to, or b) there's no monitor command to introduce a new pr-helper for a disk that already exists. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/libvirt_private.syms | 1 + src/qemu/qemu_domain.c | 8 ++++++++ src/util/virstoragefile.c | 18 ++++++++++++++++++ src/util/virstoragefile.h | 2 ++ 4 files changed, 29 insertions(+) diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index b0dc76b91..424f2ef64 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -2719,6 +2719,7 @@ virStorageNetHostTransportTypeToString; virStorageNetProtocolTypeToString; virStoragePRDefFormat; virStoragePRDefFree; +virStoragePRDefIsEqual; virStoragePRDefParseNode; virStorageSourceBackingStoreClear; virStorageSourceClear; diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 441bf5935..e8539dcab 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -6865,6 +6865,14 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk, CHECK_EQ(src->readonly, "readonly", true); CHECK_EQ(src->shared, "shared", true); + if (!virStoragePRDefIsEqual(disk->src->pr, + orig_disk->src->pr)) { + virReportError(VIR_ERR_OPERATION_UNSUPPORTED, + _("cannot modify field '%s' of the disk"), + "reservations");