11:08 a.m.
Few fields were missing and few fields can be actually changed.
The last two patches actually fix
https://bugzilla.redhat.com/show_bug.cgi?id=1326660 since we reported incorrect
error message.
Peter Krempa (3):
qemu: domain: Fix error message in qemuDomainDiskChangeSupported
qemu: domain: Check few more fields for when changing disk source
qemu: hotplug: Allow update of disk default snapshot location
src/qemu/qemu_domain.c | 10 ++++++++--
src/qemu/qemu_driver.c | 4 ++++
2 files changed, 12 insertions(+), 2 deletions(-)
--
2.8.1
11:08 a.m.
New subject: [libvirt] [PATCH 1/3] qemu: domain: Fix error message in qemuDomainDiskChangeSupported
disk->dst represents the <target> element in the XML.
---
src/qemu/qemu_domain.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 6262bfe..8132ff6 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3828,7 +3828,7 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk,
if (STRNEQ(disk->dst, orig_disk->dst)) {
virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
_("cannot modify field '%s' of the disk"),
- "bus");
+ "target");
return false;
}
CHECK_EQ(tray_status, "tray", true);
--
2.8.1
11:08 a.m.
New subject: [libvirt] [PATCH 2/3] qemu: domain: Check few more fields for when changing disk source
Both disk->src->shared and disk->src->readonly can't be modified when
changing disk source for floppy and cdrom drives since both arguments
are passed as arguments of the disk rather than the image in qemu.
Historically these fields have only two possible values since they are
represented as XML thus we need to ignore if user did not provide them
and thus we are treating them as false.
---
src/qemu/qemu_domain.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index 8132ff6..f6e68ea 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3940,6 +3940,12 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk,
return false;
}
+ /* checks for fields stored in disk->src */
+ /* unfortunately 'readonly' and 'shared' can't be converted to
tristate
+ * values thus we need to ignore the check if the new value is 'false' */
+ CHECK_EQ(src->readonly, "readonly", true);
+ CHECK_EQ(src->shared, "shared", true);
+
#undef CHECK_EQ
return true;
--
2.8.1
11:08 a.m.
New subject: [libvirt] [PATCH 3/3] qemu: hotplug: Allow update of disk default snapshot location
Since the field is internal to libvirt we can allow the users to modify
it.
---
src/qemu/qemu_domain.c | 2 +-
src/qemu/qemu_driver.c | 4 ++++
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index f6e68ea..e6cd775 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -3923,7 +3923,7 @@ qemuDomainDiskChangeSupported(virDomainDiskDefPtr disk,
CHECK_EQ(ioeventfd, "ioeventfd", true);
CHECK_EQ(event_idx, "event_idx", true);
CHECK_EQ(copy_on_read, "copy_on_read", true);
- CHECK_EQ(snapshot, "snapshot", true);
+ /* "snapshot" is a libvirt internal field and thus can be changed */
/* startupPolicy is allowed to be updated. Therefore not checked here. */
CHECK_EQ(transient, "transient", true);
CHECK_EQ(info.bootIndex, "boot order", true);
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index e5badf6..351f400 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7682,6 +7682,7 @@ qemuDomainChangeDiskLive(virConnectPtr conn,
virDomainDiskDefPtr disk = dev->data.disk;
virDomainDiskDefPtr orig_disk = NULL;
int startupPolicy;
+ int snapshot;
int ret = -1;
if (virStorageTranslateDiskSourcePool(conn, disk) < 0)
@@ -7700,6 +7701,7 @@ qemuDomainChangeDiskLive(virConnectPtr conn,
}
startupPolicy = orig_disk->startupPolicy;
+ snapshot = orig_disk->snapshot;
switch ((virDomainDiskDevice) disk->device) {
case VIR_DOMAIN_DISK_DEVICE_CDROM:
@@ -7708,6 +7710,7 @@ qemuDomainChangeDiskLive(virConnectPtr conn,
goto cleanup;
orig_disk->startupPolicy = dev->data.disk->startupPolicy;
+ orig_disk->snapshot = dev->data.disk->snapshot;
if (qemuDomainDiskSourceDiffers(conn, disk, orig_disk)) {
/* Add the new disk src into shared disk hash table */
@@ -7742,6 +7745,7 @@ qemuDomainChangeDiskLive(virConnectPtr conn,
return ret;
rollback:
+ orig_disk->snapshot = snapshot;
orig_disk->startupPolicy = startupPolicy;
goto cleanup;
}
--
2.8.1
11:13 a.m.
On Thu, Apr 28, 2016 at 18:08:56 +0200, Peter Krempa wrote:
Few fields were missing and few fields can be actually changed.
The last two patches actually fix
https://bugzilla.redhat.com/show_bug.cgi?id=1326660 since we reported incorrect
Oops, incorrect BZ. The correct one is:
https://bugzilla.redhat.com/show_bug.cgi?id=1328301
3:10 a.m.
On 28.04.2016 18:08, Peter Krempa wrote:
Few fields were missing and few fields can be actually changed.
The last two patches actually fix
https://bugzilla.redhat.com/show_bug.cgi?id=1326660 since we reported incorrect
error message.
Peter Krempa (3):
qemu: domain: Fix error message in qemuDomainDiskChangeSupported
qemu: domain: Check few more fields for when changing disk source
qemu: hotplug: Allow update of disk default snapshot location
src/qemu/qemu_domain.c | 10 ++++++++--
src/qemu/qemu_driver.c | 4 ++++
2 files changed, 12 insertions(+), 2 deletions(-)
ACK to all of them and safe for freeze.
Michal
3130
days inactive
3131
days old
5 comments
2 participants
participants (2)
-
Michal Privoznik -
Peter Krempa