[libvirt] [PATCH v3 00/28] Introduce metadata locking

v3 of: https://www.redhat.com/archives/libvir-list/2018-August/msg00814.html What has changed since v2? A lot. - The lock manager was moved into security manager (which requires a lot of preparation which is done in first 8 or so patches). - The VIR_LOCK_SPACE_ACQUIRE_WAIT flag (2/7 in v2) is dropped as it turned out to be harmful. virlockd can't block under any circumstances. And we can not introduce a thread pool for it. - While going through the code I've found couple of bugs which I'm fixing in first few patches. As usual, you can find all the patches at: https://github.com/zippy2/libvirt/tree/disk_metadata_lock_v3 Michal Prívozník (28): virSecurityManagerNewDriver: Fix code pattern virSecurityManagerNewStack: Don't ignore virSecurityStackAddNested retval lock_daemon: Fix some memleaks lock_driver_lockd: Don't leak lockspace dirs virLockManagerLockDaemonAcquire: Drop useless check virLockManagerSanlockAddResource: Do not ignore unknown resource types locking: Don't leak private data in virLockManagerLockDaemonNew virLockManagerLockDaemonAddResource: Switch to cleanup label rather than error virlockspace: Allow caller to specify start and length offset in virLockSpaceAcquireResource lock_driver_lockd: Introduce VIR_LOCK_SPACE_PROTOCOL_ACQUIRE_RESOURCE_METADATA flag lock_driver: Introduce new VIR_LOCK_MANAGER_OBJECT_TYPE_DAEMON _virLockManagerLockDaemonPrivate: Move @hasRWDisks into dom union lock_driver: Introduce VIR_LOCK_MANAGER_RESOURCE_TYPE_METADATA lock_daemon_dispatch: Check for ownerPid rather than ownerId locking: Introduce virLockManagerClearResources lock_driver: Introduce KEEP_OPEN flags lock_manager: Introduce virLockManagerCloseConn lock_manager: Allow disabling configFile for virLockManagerPluginNew qemu_conf: Introduce metadata_lock_manager security_manager: Load lock plugin on init security_manager: Introduce virSecurityManagerLockCloseConn security_manager: Introduce metadata locking APIs security_dac: Pass virSecurityManagerPtr to virSecurityDACSetOwnership security_dac: Pass virSecurityManagerPtr to virSecurityDACRestoreFileLabelInternal security_dac: Fix info messages when chown()-ing security_dac: Fix const correctness security_dac: Move transaction handling up one level security_dac: Lock domain metadata cfg.mk | 4 +- src/libvirt_private.syms | 2 + src/locking/lock_daemon.c | 3 + src/locking/lock_daemon_dispatch.c | 25 +- src/locking/lock_driver.h | 38 +++ src/locking/lock_driver_lockd.c | 520 ++++++++++++++++++++++++++----------- src/locking/lock_driver_lockd.h | 1 + src/locking/lock_driver_nop.c | 14 + src/locking/lock_driver_sanlock.c | 50 ++-- src/locking/lock_manager.c | 31 ++- src/locking/lock_manager.h | 7 + src/qemu/libvirtd_qemu.aug | 1 + src/qemu/qemu.conf | 6 + src/qemu/qemu_conf.c | 13 + src/qemu/qemu_conf.h | 1 + src/qemu/qemu_driver.c | 12 +- src/qemu/test_libvirtd_qemu.aug.in | 1 + src/security/security_dac.c | 213 +++++++++------ src/security/security_manager.c | 366 +++++++++++++++++++++++++- src/security/security_manager.h | 17 +- src/util/virlockspace.c | 15 +- src/util/virlockspace.h | 4 + tests/testutilsqemu.c | 2 +- tests/virlockspacetest.c | 29 ++- 24 files changed, 1096 insertions(+), 279 deletions(-) -- 2.16.4