From: Trond Myklebust <trond.myklebust@primarydata.com>
To: anna.schumaker@netapp.com
Cc: linux-nfs@vger.kernel.org, Oleg Drokin <green@linuxhacker.ru>
Subject: [PATCH v4 07/20] NFSv4.1: Deal with server reboots during delegation expiration recovery
Date: Thu, 15 Sep 2016 12:45:47 -0400 [thread overview]
Message-ID: <1473957960-10001-8-git-send-email-trond.myklebust@primarydata.com> (raw)
In-Reply-To: <1473957960-10001-7-git-send-email-trond.myklebust@primarydata.com>
Ensure that if the server reboots while we're testing and recovering
from revoked delegations, we exit to allow the state manager to
handle matters.
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
---
fs/nfs/delegation.c | 26 ++++++++++++++++++++++++++
1 file changed, 26 insertions(+)
diff --git a/fs/nfs/delegation.c b/fs/nfs/delegation.c
index ff0c1a0feb9d..b873271c613a 100644
--- a/fs/nfs/delegation.c
+++ b/fs/nfs/delegation.c
@@ -874,6 +874,13 @@ restart:
rcu_read_unlock();
}
+static inline bool nfs4_server_rebooted(const struct nfs_client *clp)
+{
+ return (clp->cl_state & (BIT(NFS4CLNT_CHECK_LEASE) |
+ BIT(NFS4CLNT_LEASE_EXPIRED) |
+ BIT(NFS4CLNT_SESSION_RESET))) != 0;
+}
+
static void nfs_mark_test_expired_delegation(struct nfs_server *server,
struct nfs_delegation *delegation)
{
@@ -882,6 +889,19 @@ static void nfs_mark_test_expired_delegation(struct nfs_server *server,
set_bit(NFS4CLNT_DELEGATION_EXPIRED, &server->nfs_client->cl_state);
}
+static void nfs_inode_mark_test_expired_delegation(struct nfs_server *server,
+ struct inode *inode)
+{
+ struct nfs_delegation *delegation;
+
+ rcu_read_lock();
+ delegation = rcu_dereference(NFS_I(inode)->delegation);
+ if (delegation)
+ nfs_mark_test_expired_delegation(server, delegation);
+ rcu_read_unlock();
+
+}
+
static void nfs_delegation_mark_test_expired_server(struct nfs_server *server)
{
struct nfs_delegation *delegation;
@@ -954,6 +974,12 @@ restart:
nfs_inode_find_state_and_recover(inode, &stateid);
}
put_rpccred(cred);
+ if (nfs4_server_rebooted(clp)) {
+ nfs_inode_mark_test_expired_delegation(server,inode);
+ iput(inode);
+ nfs_sb_deactive(server->super);
+ return;
+ }
iput(inode);
nfs_sb_deactive(server->super);
goto restart;
--
2.7.4
next prev parent reply other threads:[~2016-09-15 16:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-15 16:45 [PATCH v4 00/20] Fix delegation behaviour when server revokes some state Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 01/20] NFSv4.1: Don't deadlock the state manager on the SEQUENCE status flags Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 02/20] NFSv4.1: Don't check delegations that are already marked as revoked Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 03/20] NFSv4.1: Allow test_stateid to handle session errors without waiting Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 04/20] NFSv4.1: Add a helper function to deal with expired stateids Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 05/20] NFSv4.x: Allow callers of nfs_remove_bad_delegation() to specify a stateid Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 06/20] NFSv4.1: Test delegation stateids when server declares "some state revoked" Trond Myklebust
2016-09-15 16:45 ` Trond Myklebust [this message]
2016-09-15 16:45 ` [PATCH v4 08/20] NFSv4.1: Don't recheck delegations that have already been checked Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 09/20] NFSv4.1: Allow revoked stateids to skip the call to TEST_STATEID Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 10/20] NFSv4.1: Ensure we always run TEST/FREE_STATEID on locks Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 11/20] NFSv4.1: FREE_STATEID can be asynchronous Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 12/20] NFSv4.1: Ensure we call FREE_STATEID if needed on close/delegreturn/locku Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 13/20] NFSv4: nfs_inode_find_delegation_state_and_recover() should check all stateids Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 14/20] NFSv4: nfs4_do_handle_exception() handle revoke/expiry of a single stateid Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 15/20] NFSv4: nfs4_handle_delegation_recall_error() handle expiration as revoke case Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 16/20] NFSv4: nfs4_handle_setlk_error() " Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 17/20] NFSv4.1: nfs4_layoutget_handle_exception handle revoked state Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 18/20] NFSv4: Pass the stateid to the exception handler in nfs4_read/write_done_cb Trond Myklebust
2016-09-15 16:45 ` [PATCH v4 19/20] NFSv4: Fix a race in nfs_inode_reclaim_delegation() Trond Myklebust
2016-09-15 16:46 ` [PATCH v4 20/20] NFSv4: Fix a race when updating an open_stateid Trond Myklebust
2016-09-15 22:17 ` kbuild test robot
2016-09-16 4:38 ` [PATCH v4 00/20] Fix delegation behaviour when server revokes some state Oleg Drokin
2016-09-16 15:36 ` Trond Myklebust
2016-09-16 21:15 ` Oleg Drokin
2016-09-16 21:21 ` Oleg Drokin
2016-09-16 21:28 ` Trond Myklebust
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