[Nfs-ganesha-devel] [nfs-ganesha RFC PATCH v2 08/13] SAL: add a way to check for grace period being enforced cluster-wide

From: Jeff Layton <jlayton(a)redhat.com&gt; Add a new recovery backend operation to tell whether the grace period is being fully enforced. Singleton backends that don't define this operation will just have nfs_grace_enforcing() return true. Change-Id: I8020723238396efe0949f29e1906c58b0a5e26c9 Signed-off-by: Jeff Layton <jlayton(a)redhat.com&gt; --- src/SAL/nfs4_recovery.c | 14 ++++++++++++++ src/include/sal_functions.h | 1 + 2 files changed, 15 insertions(+) diff --git a/src/SAL/nfs4_recovery.c b/src/SAL/nfs4_recovery.c index debc6cab1bdb..400d8b528d26 100644 --- a/src/SAL/nfs4_recovery.c +++ b/src/SAL/nfs4_recovery.c @@ -227,6 +227,20 @@ void nfs_maybe_start_grace(void) } } +/** + * @brief Are all hosts in cluster enforcing the grace period? + * + * Singleton servers always return true here since the only grace period that + * matters is the local one. Clustered backends should check to make sure that + * the whole cluster is in grace. + */ +bool nfs_grace_enforcing(void) +{ + if (recovery_backend->grace_enforcing) + return recovery_backend->grace_enforcing(); + return true; +} + void nfs_try_lift_grace(void) { bool in_grace = true; diff --git a/src/include/sal_functions.h b/src/include/sal_functions.h index ac01a6eba497..96a4eb40a50b 100644 --- a/src/include/sal_functions.h +++ b/src/include/sal_functions.h @@ -1027,6 +1027,7 @@ struct nfs4_recovery_backend { void (*maybe_start_grace)(void); bool (*try_lift_grace)(void); void (*set_enforcing)(void); + bool (*grace_enforcing)(void); }; void fs_backend_init(struct nfs4_recovery_backend **); -- 2.17.0