On Thu, Feb 19, 2015 at 11:43:15AM -0700, Jim Fehlig wrote:
Marek Marczykowski-Górecki wrote:
It will not be possible to detach such device later. Also improve logging in such cases.
Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com> --- src/libxl/libxl_driver.c | 41 +++++++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-)
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index ce3a99b..005cc96 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -2787,6 +2787,7 @@ libxlDomainAttachNetDevice(libxlDriverPrivatePtr driver, int actualType; libxl_device_nic nic; int ret = -1; + char mac[VIR_MAC_STRING_BUFLEN];
/* preallocate new slot for device */ if (VIR_REALLOC_N(vm->def->nets, vm->def->nnets + 1) < 0) @@ -2801,6 +2802,14 @@ libxlDomainAttachNetDevice(libxlDriverPrivatePtr driver,
actualType = virDomainNetGetActualType(net);
+ /* -2 means "multiple matches" so then fail also */
No longer true after commit 2fbae1b2. I think you just want to check if virDomainNetFindIdx() >= 0, meaning the def already contains a net device with the same mac address.
But here the error is when the device *is* found, so the opposite case than already reported as an error by virDomainNetFindIdx. Is it correct (harmless) to call virReportError when no error occurred (function returns >=0)? Maybe libvirt should check for duplicated devices at higher level (-> for all drivers in the same place)?
+ if (virDomainNetFindIdx(vm->def, net) != -1) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("device matching mac address %s already exists"), + virMacAddrFormat(&net->mac, mac)); + return -1; + } + if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV) { /* This is really a "smart hostdev", so it should be attached * as a hostdev (the hostdev code will reach over into the @@ -2879,6 +2888,7 @@ libxlDomainAttachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev) virDomainHostdevDefPtr hostdev; virDomainHostdevDefPtr found; virDomainHostdevSubsysPCIPtr pcisrc; + char mac[VIR_MAC_STRING_BUFLEN];
switch (dev->type) { case VIR_DOMAIN_DEVICE_DISK: @@ -2896,6 +2906,12 @@ libxlDomainAttachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev)
case VIR_DOMAIN_DEVICE_NET: net = dev->data.net; + if (virDomainNetFindIdx(vmdef, net) >= 0) { + virReportError(VIR_ERR_INVALID_ARG, + _("network device with mac %s already exists."), + virMacAddrFormat(&net->mac, mac)); + return -1; + }
Ah, like you've done here :-).
if (virDomainNetInsert(vmdef, net)) return -1; dev->data.net = NULL; @@ -3060,8 +3076,18 @@ libxlDomainDetachNetDevice(libxlDriverPrivatePtr driver, char mac[VIR_MAC_STRING_BUFLEN]; int ret = -1;
- if ((detachidx = virDomainNetFindIdx(vm->def, net)) < 0) + if ((detachidx = virDomainNetFindIdx(vm->def, net)) < 0) { + if (detachidx == -2) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("multiple devices matching mac address %s found"), + virMacAddrFormat(&net->mac, mac)); + } else { + virReportError(VIR_ERR_OPERATION_FAILED, + _("network device %s not found"), + virMacAddrFormat(&net->mac, mac)); + }
virDomainNetFindIdx() handles the error reporting now.
return -1; + }
detach = vm->def->nets[detachidx];
@@ -3136,6 +3162,7 @@ libxlDomainDetachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev) virDomainHostdevDefPtr hostdev, det_hostdev; virDomainNetDefPtr net; int idx; + char mac[VIR_MAC_STRING_BUFLEN];
switch (dev->type) { case VIR_DOMAIN_DEVICE_DISK: @@ -3150,8 +3177,18 @@ libxlDomainDetachDeviceConfig(virDomainDefPtr vmdef, virDomainDeviceDefPtr dev)
case VIR_DOMAIN_DEVICE_NET: net = dev->data.net; - if ((idx = virDomainNetFindIdx(vmdef, net)) < 0) + if ((idx = virDomainNetFindIdx(vmdef, net)) < 0) { + if (idx == -2) { + virReportError(VIR_ERR_OPERATION_FAILED, + _("multiple devices matching mac address %s found"), + virMacAddrFormat(&dev->data.net->mac, mac)); + } else { + virReportError(VIR_ERR_OPERATION_FAILED, + _("network device %s not found"), + virMacAddrFormat(&dev->data.net->mac, mac)); + }
Same here.
Regards, Jim
-- Best Regards, Marek Marczykowski-Górecki Invisible Things Lab A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing?