>From Frank Filz <ffilz...@mindspring.com>: Frank Filz has uploaded a new change for review.
https://review.gerrithub.io/300030 Change subject: Improve atomic create ...................................................................... Improve atomic create A user space NFS server has a unique problem in that a create request (CREATE or OPEN/CREATE) is required to create a file, and set attributes on the file. Even if the source is a POSIX open() call, an EXCLUSIVE or EXCLUSIVE_41 create must set the verifier into atime and mtime. This patch introduces a way for the FSAL to indicate the level of atomic create and setattrs it provides. The basic level is no special support, in which case, the fsal_helper.c function create_helper() will generate a random file name (of the form nfs_ganesha_XXXXXXXX) and then create the file using that name, only when everything is complete is the file linked with the requested name. A second level of support uses O_TMPFILE to create an unnamed file which has the advantage over the random file name in that if Ganesha crashes, the temporary file will disappear. The final level of support is for FSALs that can completely support an atomic create and setattrs. For reasons of avoiding regressions, and due to the special nature of the FSAL, FSAL_RGW claims complete atomic create support. Change-Id: I666771af7193b92e701c50c4346009613bf60692 Signed-off-by: Frank S. Filz <ffilz...@mindspring.com> --- M src/FSAL/FSAL_CEPH/handle.c M src/FSAL/FSAL_GLUSTER/handle.c M src/FSAL/FSAL_GPFS/file.c M src/FSAL/FSAL_RGW/handle.c M src/FSAL/FSAL_RGW/main.c M src/FSAL/FSAL_VFS/file.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_file.c M src/FSAL/Stackable_FSALs/FSAL_MDCACHE/mdcache_handle.c M src/FSAL/commonlib.c M src/FSAL/default_methods.c M src/FSAL/fsal_helper.c M src/MainNFSD/nfs_init.c M src/Protocols/9P/9p_lcreate.c M src/Protocols/NFS/nfs4_op_open.c M src/include/FSAL/fsal_commonlib.h M src/include/fsal.h M src/include/fsal_api.h M src/include/fsal_types.h 18 files changed, 736 insertions(+), 269 deletions(-) git pull ssh://review.gerrithub.io:29418/ffilz/nfs-ganesha refs/changes/30/300030/1 -- To view, visit https://review.gerrithub.io/300030 To unsubscribe, visit https://review.gerrithub.io/settings Gerrit-MessageType: newchange Gerrit-Change-Id: I666771af7193b92e701c50c4346009613bf60692 Gerrit-PatchSet: 1 Gerrit-Project: ffilz/nfs-ganesha Gerrit-Branch: next Gerrit-Owner: Frank Filz <ffilz...@mindspring.com> ------------------------------------------------------------------------------ The Command Line: Reinvented for Modern Developers Did the resurgence of CLI tooling catch you by surprise? Reconnect with the command line and become more productive. Learn the new .NET and ASP.NET CLI. Get your free copy! http://sdm.link/telerik _______________________________________________ Nfs-ganesha-devel mailing list Nfs-ganesha-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nfs-ganesha-devel
