Alona Kaplan has posted comments on this change. Change subject: backend: Add HostDev passthrough support #3 ......................................................................
Patch Set 21: (1 comment) https://gerrit.ovirt.org/#/c/37619/21/backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/hostdev/RefreshHostDevicesCommand.java File backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/hostdev/RefreshHostDevicesCommand.java: Line 87: } Line 88: } Line 89: Line 90: try { Line 91: hostDeviceManager.acquireHostDevicesLock(getVdsId()); IIUC, the lock is needed to prevent the following scenario- RunVm->Marking the devices in the host_device table as used by the vm (the VDSCommandType.create command still wasn't called)-> Calling RefreshHostDevicesCommand- calling VDSCommandType.HostDevListByCaps (the devices that were marked as used by the RunVmCommand will no longer contain the vm_id)-> calling VDSCommandType.create. To avoid this, the lock should be acquired before calling the vdsm verb, otherwise it is useless. Line 92: TransactionSupport.executeInNewTransaction(new TransactionMethod<Void>() { Line 93: @Override Line 94: public Void runInTransaction() { Line 95: hostDeviceDao.saveAllInBatch(newDevices); -- To view, visit https://gerrit.ovirt.org/37619 To unsubscribe, visit https://gerrit.ovirt.org/settings Gerrit-MessageType: comment Gerrit-Change-Id: I93c746cdda71678f7840d37683b890080a74341d Gerrit-PatchSet: 21 Gerrit-Project: ovirt-engine Gerrit-Branch: master Gerrit-Owner: Martin Betak <[email protected]> Gerrit-Reviewer: Alona Kaplan <[email protected]> Gerrit-Reviewer: Arik Hadas <[email protected]> Gerrit-Reviewer: Martin Betak <[email protected]> Gerrit-Reviewer: Martin Polednik <[email protected]> Gerrit-Reviewer: Moti Asayag <[email protected]> Gerrit-Reviewer: Omer Frenkel <[email protected]> Gerrit-Reviewer: Shahar Havivi <[email protected]> Gerrit-Reviewer: [email protected] Gerrit-Reviewer: oVirt Jenkins CI Server Gerrit-HasComments: Yes _______________________________________________ Engine-patches mailing list [email protected] http://lists.ovirt.org/mailman/listinfo/engine-patches
