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authorTigran Mkrtchyan <tigran.mkrtchyan@desy.de>2018-11-21 12:25:41 +0100
committerTrond Myklebust <trond.myklebust@hammerspace.com>2018-11-22 14:04:55 -0500
commitbb21ce0ad227b69ec0f83279297ee44232105d96 (patch)
tree2e90fa3820d7c3e2642fae6f617f131115052fc6 /fs
parent99f2c55591fb5c1b536263970d98c2ebc2089906 (diff)
flexfiles: use per-mirror specified stateid for IO
rfc8435 says: For tight coupling, ffds_stateid provides the stateid to be used by the client to access the file. However current implementation replaces per-mirror provided stateid with by open or lock stateid. Ensure that per-mirror stateid is used by ff_layout_write_prepare_v4 and nfs4_ff_layout_prepare_ds. Signed-off-by: Tigran Mkrtchyan <tigran.mkrtchyan@desy.de> Signed-off-by: Rick Macklem <rmacklem@uoguelph.ca> Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Diffstat (limited to 'fs')
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayout.c21
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayout.h4
-rw-r--r--fs/nfs/flexfilelayout/flexfilelayoutdev.c19
3 files changed, 32 insertions, 12 deletions
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.c b/fs/nfs/flexfilelayout/flexfilelayout.c
index 86bcba40ca61..74b36ed883ca 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.c
+++ b/fs/nfs/flexfilelayout/flexfilelayout.c
@@ -1361,12 +1361,7 @@ static void ff_layout_read_prepare_v4(struct rpc_task *task, void *data)
task))
return;
- if (ff_layout_read_prepare_common(task, hdr))
- return;
-
- if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
- hdr->args.lock_context, FMODE_READ) == -EIO)
- rpc_exit(task, -EIO); /* lost lock, terminate I/O */
+ ff_layout_read_prepare_common(task, hdr);
}
static void ff_layout_read_call_done(struct rpc_task *task, void *data)
@@ -1542,12 +1537,7 @@ static void ff_layout_write_prepare_v4(struct rpc_task *task, void *data)
task))
return;
- if (ff_layout_write_prepare_common(task, hdr))
- return;
-
- if (nfs4_set_rw_stateid(&hdr->args.stateid, hdr->args.context,
- hdr->args.lock_context, FMODE_WRITE) == -EIO)
- rpc_exit(task, -EIO); /* lost lock, terminate I/O */
+ ff_layout_write_prepare_common(task, hdr);
}
static void ff_layout_write_call_done(struct rpc_task *task, void *data)
@@ -1742,6 +1732,10 @@ ff_layout_read_pagelist(struct nfs_pgio_header *hdr)
fh = nfs4_ff_layout_select_ds_fh(lseg, idx);
if (fh)
hdr->args.fh = fh;
+
+ if (!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
+ goto out_failed;
+
/*
* Note that if we ever decide to split across DSes,
* then we may need to handle dense-like offsets.
@@ -1804,6 +1798,9 @@ ff_layout_write_pagelist(struct nfs_pgio_header *hdr, int sync)
if (fh)
hdr->args.fh = fh;
+ if (!nfs4_ff_layout_select_ds_stateid(lseg, idx, &hdr->args.stateid))
+ goto out_failed;
+
/*
* Note that if we ever decide to split across DSes,
* then we may need to handle dense-like offsets.
diff --git a/fs/nfs/flexfilelayout/flexfilelayout.h b/fs/nfs/flexfilelayout/flexfilelayout.h
index 411798346e48..de50a342d5a5 100644
--- a/fs/nfs/flexfilelayout/flexfilelayout.h
+++ b/fs/nfs/flexfilelayout/flexfilelayout.h
@@ -215,6 +215,10 @@ unsigned int ff_layout_fetch_ds_ioerr(struct pnfs_layout_hdr *lo,
unsigned int maxnum);
struct nfs_fh *
nfs4_ff_layout_select_ds_fh(struct pnfs_layout_segment *lseg, u32 mirror_idx);
+int
+nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
+ u32 mirror_idx,
+ nfs4_stateid *stateid);
struct nfs4_pnfs_ds *
nfs4_ff_layout_prepare_ds(struct pnfs_layout_segment *lseg, u32 ds_idx,
diff --git a/fs/nfs/flexfilelayout/flexfilelayoutdev.c b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
index 74d8d5352438..d23347389626 100644
--- a/fs/nfs/flexfilelayout/flexfilelayoutdev.c
+++ b/fs/nfs/flexfilelayout/flexfilelayoutdev.c
@@ -370,6 +370,25 @@ out:
return fh;
}
+int
+nfs4_ff_layout_select_ds_stateid(struct pnfs_layout_segment *lseg,
+ u32 mirror_idx,
+ nfs4_stateid *stateid)
+{
+ struct nfs4_ff_layout_mirror *mirror = FF_LAYOUT_COMP(lseg, mirror_idx);
+
+ if (!ff_layout_mirror_valid(lseg, mirror, false)) {
+ pr_err_ratelimited("NFS: %s: No data server for mirror offset index %d\n",
+ __func__, mirror_idx);
+ goto out;
+ }
+
+ nfs4_stateid_copy(stateid, &mirror->stateid);
+ return 1;
+out:
+ return 0;
+}
+
/**
* nfs4_ff_layout_prepare_ds - prepare a DS connection for an RPC call
* @lseg: the layout segment we're operating on