Commit 00bcbe11 authored Jun 23, 2018 by Trond Myklebust

pNFS: Don't update the stateid when replying NFS4ERR_DELAY to a layout recall



RFC5661 doesn't state directly that the client should update the layout
stateid if it returns NFS4ERR_NOMATCHING_LAYOUT in response to a recall,
however it does state that this error will "cleanly indicate completion"
on par with returning the layout. For this reason, we assume that the
client should update the layout stateid. The Linux pNFS server definitely
does expect this behaviour.

However, if the client replies NFS4ERR_DELAY, then it is stating that
the recall was not processed, so it would be very wrong to update the
layout stateid.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>

parent e0b7d420

fs/nfs/callback_proc.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -273,7 +273,6 @@ static u32 initiate_file_draining(struct nfs_client *clp,
		rv = pnfs_check_callback_stateid(lo, &args->cbl_stateid);
		if (rv != NFS_OK)
		goto unlock;
		pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);

		/*
		* Enforce RFC5661 Section 12.5.5.2.1.5 (Bulk Recall and Return)
		@@ -283,6 +282,7 @@ static u32 initiate_file_draining(struct nfs_client *clp,
		goto unlock;
		}

		pnfs_set_layout_stateid(lo, &args->cbl_stateid, true);
		switch (pnfs_mark_matching_lsegs_return(lo, &free_me_list,
		&args->cbl_range,
		be32_to_cpu(args->cbl_stateid.seqid))) {

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