Here's another round of sysfs entries for each nfs_server, this time with a single use-case: a "shutdown" toggle that causes the basic rpc_clnt(s) to immediately fail tasks with -EIO. It works well for the non pNFS cases to allow an unmount of a filesystem when the NFS server has gone away. I'm posting to gain potential NACKing, or to be redirected, or to serve as fodder for discussion at LSF. I'm thinking I'd like to toggle v4.2 things like READ_PLUS in here next, or other module-level options that maybe would be useful per-mount. Benjamin Coddington (9): NFS: rename nfs_client_kset to nfs_kset NFS: rename nfs_client_kobj to nfs_net_kobj NFS: add superblock sysfs entries NFS: Add sysfs links to sunrpc clients for nfs_clients NFS: add a sysfs link to the lockd rpc_client NFS: add a sysfs link to the acl rpc_client NFS: add sysfs shutdown knob NFS: Cleanup unused rpc_clnt variable NFSv4: Clean up some shutdown loops fs/lockd/clntlock.c | 6 ++ fs/nfs/client.c | 21 +++++ fs/nfs/nfs3client.c | 4 + fs/nfs/nfs4client.c | 2 + fs/nfs/nfs4proc.c | 2 +- fs/nfs/nfs4state.c | 5 +- fs/nfs/super.c | 6 +- fs/nfs/sysfs.c | 148 +++++++++++++++++++++++++++++++++--- fs/nfs/sysfs.h | 9 ++- include/linux/lockd/bind.h | 2 + include/linux/nfs_fs_sb.h | 3 + include/linux/sunrpc/clnt.h | 11 ++- net/sunrpc/clnt.c | 5 ++ net/sunrpc/sysfs.h | 7 -- 14 files changed, 204 insertions(+), 27 deletions(-) -- 2.39.2
