On Fri, Feb 01, 2013 at 03:56:05PM +0300, Stanislav Kinsbursky wrote: > This patch set finally enables NFSd in container. > I've tested it in container with it's own root, and also pid, net and mount > namespaces. Thanks, these look fine to me; applying. They should show up in my for-3.9 branch sometime today. --b. > > There are some limitations, which are listed below: > 1) only nfsdclt client tracker supported for container. It's deprecated and > going to be removed soon. UMH tracker requires switching root. Legacy tracker > requires something like RB tree of opened inodes to make sure, that any > recovery directory will be opened only once. > 2) Enabled versions are controlled globally (should be fixed). > 3) Server should be stopped by writing "0" to > /proc/fs/nfsd/threads instead of sending signals to NFSd threads (they are > working in init_pid). Sending signals will either won't work if container wich > its own pid namespace, or will kill all nfsd threads for all containers in > init_pid namesapce. > 4) Currently, if container was stopped without stopping NFS server (i.e. it's > init was killed), NFSd kthreads will remain running. One of possible solutions > is to not hold network by NFSd service sockets, but register oer-net callback > and kill all the threads on network namespace exit. > 5) NFSd filesystem superblock holds network namespace. I.e. if some process > will hold container's NFSd supeblock, then sthe whole container's network > naemspace will stay alive even is container is destroyed already. > > There may be more limitations, which are not clear to me yet. > > v2: > 1) removed root swap - deprecated > 2) rebased on current tree > > The following series implements... > > --- > > Stanislav Kinsbursky (4): > nfsd: containerize NFSd filesystem > nfsd: use proper net while reading "exports" file > nfsd: disable usermode helper client tracker in container > nfsd: enable NFSv4 state in containers > > > fs/nfsd/nfs4recover.c | 6 ++++ > fs/nfsd/nfs4state.c | 10 ------ > fs/nfsd/nfsctl.c | 77 +++++++++++++++++++++++++++++++++++++------------ > fs/nfsd/nfssvc.c | 5 +-- > 4 files changed, 66 insertions(+), 32 deletions(-) > -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
