diff options
| author | Andy Adamson <andros@netapp.com> | 2011-07-30 20:52:35 -0400 |
|---|---|---|
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2011-07-31 12:18:15 -0400 |
| commit | 7f11d8d38d64739e190581e015a2a2730ff54e2a (patch) | |
| tree | 449178cb7ef4e4675cab239400f6b4e43ac83980 /fs/nfs/nfs4proc.c | |
| parent | 3557c6c3be5b2ca0b11365db7f8a813253eb520b (diff) | |
pnfs: GETDEVICELIST
The block driver uses GETDEVICELIST
Signed-off-by: Andy Adamson <andros@netapp.com>
[pass struct nfs_server * to getdevicelist]
[get machince creds for getdevicelist]
[fix getdevicelist decode sizing]
Signed-off-by: Benny Halevy <bhalevy@panasas.com>
Signed-off-by: Benny Halevy <bhalevy@tonian.com>
Signed-off-by: Jim Rees <rees@umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Diffstat (limited to 'fs/nfs/nfs4proc.c')
| -rw-r--r-- | fs/nfs/nfs4proc.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index efa6ae822ca..af32d3df054 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -5834,6 +5834,54 @@ int nfs4_proc_layoutreturn(struct nfs4_layoutreturn *lrp) return status; } +/* + * Retrieve the list of Data Server devices from the MDS. + */ +static int _nfs4_getdevicelist(struct nfs_server *server, + const struct nfs_fh *fh, + struct pnfs_devicelist *devlist) +{ + struct nfs4_getdevicelist_args args = { + .fh = fh, + .layoutclass = server->pnfs_curr_ld->id, + }; + struct nfs4_getdevicelist_res res = { + .devlist = devlist, + }; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_GETDEVICELIST], + .rpc_argp = &args, + .rpc_resp = &res, + }; + int status; + + dprintk("--> %s\n", __func__); + status = nfs4_call_sync(server->client, server, &msg, &args.seq_args, + &res.seq_res, 0); + dprintk("<-- %s status=%d\n", __func__, status); + return status; +} + +int nfs4_proc_getdevicelist(struct nfs_server *server, + const struct nfs_fh *fh, + struct pnfs_devicelist *devlist) +{ + struct nfs4_exception exception = { }; + int err; + + do { + err = nfs4_handle_exception(server, + _nfs4_getdevicelist(server, fh, devlist), + &exception); + } while (exception.retry); + + dprintk("%s: err=%d, num_devs=%u\n", __func__, + err, devlist->num_devs); + + return err; +} +EXPORT_SYMBOL_GPL(nfs4_proc_getdevicelist); + static int _nfs4_proc_getdeviceinfo(struct nfs_server *server, struct pnfs_device *pdev) { |