Currently, only a few functions which change superblock are protected by dlm lock, but to avoid consistent issue we need to protect those funcs which read superblock. And call dlm locking interface inside super1.c is really clumsy since each func which accesses superblock should be protected by dlm lock, so we call lock_cluster/unlock_cluster in mdadm.c. The first patch provides dlm locking support for CREATE, MANAGE, GROW and INCREMENTAL mode, then the second patch provides the support for ASSEMBLE mode. The last patch cleanup the failure path in Assemble(). Thanks, Guoqing Guoqing Jiang (3): mdadm: improve the dlm locking mechanism for clustered raid Assemble: provide protection when clustered raid do assemble Assemble: cleanup the failure path Assemble.c | 82 ++++++++++++++++++++++++++++++++++++-------------------------- mdadm.c | 20 +++++++++++++++ mdadm.h | 8 +++--- super1.c | 42 -------------------------------- util.c | 65 +++++++++++++++++++++++++++++++++++++++++-------- 5 files changed, 128 insertions(+), 89 deletions(-) -- 2.13.6 -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
