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author | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-06-09 13:34:22 (GMT) |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2006-06-09 13:34:22 (GMT) |
commit | 683b57b435326eb512c7305892683b6205669448 (patch) | |
tree | ca1e526ab5b27993c0c143c37bb31e18889eeb61 /fs/nfs/nfs4proc.c | |
parent | 8b23ea7bedb8b45a5bb56745fa3ff11018acf04e (diff) | |
download | linux-683b57b435326eb512c7305892683b6205669448.tar.xz |
NFSv4: Implement the fs_locations function call
NFSv4 allows for the fact that filesystems may be replicated across
several servers or that they may be migrated to a backup server in case of
failure of the primary server.
fs_locations is an NFSv4 operation for retrieving information about the
location of migrated and/or replicated filesystems.
Based on an initial implementation by Jiaying Zhang <jiayingz@citi.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 | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c index 3084072..768514d 100644 --- a/fs/nfs/nfs4proc.c +++ b/fs/nfs/nfs4proc.c @@ -3570,6 +3570,35 @@ ssize_t nfs4_listxattr(struct dentry *dentry, char *buf, size_t buflen) return len; } +int nfs4_proc_fs_locations(struct inode *dir, struct dentry *dentry, + struct nfs_fs_locations *fs_locations, struct page *page) +{ + struct nfs_server *server = NFS_SERVER(dir); + u32 bitmask[2] = { + [0] = server->attr_bitmask[0] | FATTR4_WORD0_FS_LOCATIONS, + [1] = server->attr_bitmask[1], + }; + struct nfs4_fs_locations_arg args = { + .dir_fh = NFS_FH(dir), + .name = &dentry->d_name, + .page = page, + .bitmask = bitmask, + }; + struct rpc_message msg = { + .rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_FS_LOCATIONS], + .rpc_argp = &args, + .rpc_resp = &fs_locations, + }; + int status; + + dprintk("%s: start\n", __FUNCTION__); + fs_locations->fattr.valid = 0; + fs_locations->server = server; + status = rpc_call_sync(server->client, &msg, 0); + dprintk("%s: returned status = %d\n", __FUNCTION__, status); + return status; +} + struct nfs4_state_recovery_ops nfs4_reboot_recovery_ops = { .recover_open = nfs4_open_reclaim, .recover_lock = nfs4_lock_reclaim, |