Hi Jes, Could you take a look at these patches? Thanks. Regards, Guoqing On 01/22/2018 05:12 PM, Guoqing Jiang wrote:
V3 changes: 1. remove lock_cluster()/unclock_cluster(). --------------------------------------------------------------------- V2 changes: 1. confirm a device in slave node doen't need to get lock. 2. remove the explicitly name of dlm library. 3. delete a global variable which was used for store lockid. --------------------------------------------------------------------- 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(). 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 | 78 ++++++++++++++++++++++++++++++++++++-------------------------- mdadm.c | 20 ++++++++++++++++ mdadm.h | 10 ++++---- super1.c | 42 --------------------------------- util.c | 57 ++++++++++++++++++++++++++++++++++----------- 5 files changed, 113 insertions(+), 94 deletions(-)
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