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Commit 72232a3b authored by Trond Myklebust's avatar Trond Myklebust Committed by Greg Kroah-Hartman
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NFSv4: Fix client recovery when server reboots multiple times 




[ Upstream commit c6180a6237174f481dc856ed6e890d8196b6f0fb ]

If the server reboots multiple times, the client should rely on the
server to tell it that it cannot reclaim state as per section 9.6.3.4
in RFC7530 and section 8.4.2.1 in RFC5661.
Currently, the client is being to conservative, and is assuming that
if the server reboots while state recovery is in progress, then it must
ignore state that was not recovered before the reboot.

Signed-off-by: default avatarTrond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@verizon.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent cda72bbb

fs/nfs/nfs4state.c

+0 −1
Original line number Diff line number Diff line
@@ -1718,7 +1718,6 @@ static int nfs4_recovery_handle_error(struct nfs_client *clp, int error) 
			break;

		case -NFS4ERR_STALE_CLIENTID:

			set_bit(NFS4CLNT_LEASE_EXPIRED, &clp->cl_state);

			nfs4_state_clear_reclaim_reboot(clp);

			nfs4_state_start_reclaim_reboot(clp);

			break;

		case -NFS4ERR_EXPIRED: