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NFSv4.1: RECLAIM_COMPLETE must handle EACCES

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commit e35a5e782f67ed76a65ad0f23a484444a95f000f upstream.

A client should be able to handle getting an EACCES error while doing
a mount operation to reclaim state due to NFS4CLNT_RECLAIM_REBOOT
being set. If the server returns RPC_AUTH_BADCRED because authentication
failed when we execute "exportfs -au", then RECLAIM_COMPLETE will go a
wrong way. After mount succeeds, all OPEN call will fail due to an
NFS4ERR_GRACE error being returned. This patch is to fix it by resending
a RPC request.

Signed-off-by: Zhang Xianwei <zhang.xianwei8@zte.com.cn>
Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Fixes: aa5190d0ed ("NFSv4: Kill nfs4_async_handle_error() abuses by NFSv4.1")
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Zhang Xianwei
2022-07-27 18:01:07 +08:00
committed by Greg Kroah-Hartman
parent cfde64bd31
commit f2bd1cc1fe
1 changed files with 3 additions and 0 deletions
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3
fs/nfs/nfs4proc.c
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@@ -9273,6 +9273,9 @@ static int nfs41_reclaim_complete_handle_errors(struct rpc_task *task, struct nf
rpc_delay(task, NFS4_POLL_RETRY_MAX); rpc_delay(task, NFS4_POLL_RETRY_MAX);
fallthrough; fallthrough;
case -NFS4ERR_RETRY_UNCACHED_REP: case -NFS4ERR_RETRY_UNCACHED_REP:
case -EACCES:
dprintk("%s: failed to reclaim complete error %d for server %s, retrying\n",
__func__, task->tk_status, clp->cl_hostname);
return -EAGAIN; return -EAGAIN;
case -NFS4ERR_BADSESSION: case -NFS4ERR_BADSESSION:
case -NFS4ERR_DEADSESSION: case -NFS4ERR_DEADSESSION: