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NFSv4: Handle more errors when recovering open file and locking state

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It is possible for servers to return NFS4ERR_BAD_STATEID when
the state management code is recovering locks or is reclaiming state when
returning a delegation. Ensure that we handle that case.
While we're at it, add in handlers for NFS4ERR_STALE,
NFS4ERR_ADMIN_REVOKED, NFS4ERR_OPENMODE, NFS4ERR_DENIED and
NFS4ERR_STALE_STATEID, since the protocol appears to allow for them too.

Also handle ENOMEM...

Finally, rather than add new NFSv4.0-specific errors and error handling into
the generic delegation code, move that open file and locking state error
handling into the NFSv4 layer.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Trond Myklebust
2009-06-17 13:22:59 -07:00
parent d5122201a7
commit 965b5d6791
2 changed files with 56 additions and 16 deletions
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28
fs/nfs/nfs4state.c
View File

@@ -854,25 +854,29 @@ static int nfs4_reclaim_locks(struct nfs4_state *state, const struct nfs4_state_
if (nfs_file_open_context(fl->fl_file)->state != state)
continue;
status = ops->recover_lock(state, fl);
if (status >= 0)
continue;
switch (status) {
case 0:
break;
case -ESTALE:
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_EXPIRED:
case -NFS4ERR_NO_GRACE:
case -NFS4ERR_STALE_CLIENTID:
goto out;
default:
printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
__func__, status);
case -NFS4ERR_EXPIRED:
case -NFS4ERR_NO_GRACE:
case -ENOMEM:
case -NFS4ERR_DENIED:
case -NFS4ERR_RECLAIM_BAD:
case -NFS4ERR_RECLAIM_CONFLICT:
/* kill_proc(fl->fl_pid, SIGLOST, 1); */
break;
case -NFS4ERR_STALE_CLIENTID:
goto out_err;
status = 0;
}
}
up_write(&nfsi->rwsem);
return 0;
out_err:
out:
up_write(&nfsi->rwsem);
return status;
}
@@ -918,6 +922,7 @@ restart:
printk(KERN_ERR "%s: unhandled error %d. Zeroing state\n",
__func__, status);
case -ENOENT:
case -ENOMEM:
case -ESTALE:
/*
* Open state on this file cannot be recovered
@@ -928,6 +933,9 @@ restart:
/* Mark the file as being 'closed' */
state->state = 0;
break;
case -NFS4ERR_ADMIN_REVOKED:
case -NFS4ERR_STALE_STATEID:
case -NFS4ERR_BAD_STATEID:
case -NFS4ERR_RECLAIM_BAD:
case -NFS4ERR_RECLAIM_CONFLICT:
nfs4_state_mark_reclaim_nograce(sp->so_client, state);