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path: root/fs/orangefs/downcall.h
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2016-08-12orangefs: add features opMartin Brandenburg
This is a new userspace operation, which will be done if the client-core version is greater than or equal to 2.9.6. This will provide a way to implement optional features and to determine which features are supported by the client-core. If the client-core version is older than 2.9.6, no optional features are supported and the op will not be done. The intent is to allow protocol extensions without relying on the client-core's current behavior of ignoring what it doesn't understand. Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-08-08orangefs: turn param response value into unionMartin Brandenburg
This will support a upcoming request where two related values need to be updated atomically. This was done without a union in the OrangeFS server source already. Since that will break the kernel protocol, it has been fixed there and done here in a way that does not break the kernel protocol. Signed-off-by: Martin Brandenburg <martin@omnibond.com>
2016-02-24orangefs: use ORANGEFS_NAME_LEN everywhere; remove ORANGEFS_NAME_MAXMartin Brandenburg
Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-12-03OrangeFS: Change almost all instances of the string PVFS2 to OrangeFS.Yi Liu
OrangeFS was formerly known as PVFS2 and retains the name in many places. I leave the device /dev/pvfs2-req since this affects userspace. I leave the filesystem type pvfs2 since this affects userspace. Further the OrangeFS sysint library reads fstab for an entry of type pvfs2 independently of kernel mounts. I leave extended attribute keys user.pvfs2 and system.pvfs2 as the sysint library understands these. I leave references to userspace binaries still named pvfs2. I leave the filenames. Signed-off-by: Yi Liu <yi9@clemson.edu> [martin@omnibond.com: clairify above constraints and merge] Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-11-13Orangefs: Remove upcall trailers which are not used.Martin Brandenburg
Also removes remnants of iox (readx/writex) which previously used trailers, but no longer exist. Signed-off-by: Martin Brandenburg <martin@omnibond.com> Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-05Orangefs: fix some checkpatch.pl complaints that had creeped in.Mike Marshall
Signed-off-by: Mike Marshall <hubcap@omnibond.com>
2015-10-03Orangefs: kernel client part 1Mike Marshall
OrangeFS (formerly PVFS) is an lgpl licensed userspace networked parallel file system. OrangeFS can be accessed through included system utilities, user integration libraries, MPI-IO and can be used by the Hadoop ecosystem as an alternative to the HDFS filesystem. OrangeFS is used widely for parallel science, data analytics and engineering applications. While applications often don't require Orangefs to be mounted into the VFS, users do like to be able to access their files in the normal way. The Orangefs kernel client allows Orangefs filesystems to be mounted as a VFS. The kernel client communicates with a userspace daemon which in turn communicates with the Orangefs server daemons that implement the filesystem. The server daemons (there's almost always more than one) need not be running on the same host as the kernel client. Orangefs filesystems can also be mounted with FUSE, and we ship code and instructions to facilitate that, but most of our users report preferring to use our kernel module instead. Further, as an example of a problem we can't solve with fuse, we have in the works a not-yet-ready-for-prime-time version of a file_operations lock function that accounts for the server daemons being distributed across more than one running kernel. Many people and organizations, including Clemson University, Argonne National Laboratories and Acxiom Corporation have helped to create what has become Orangefs over more than twenty years. Some of the more recent contributors to the kernel client include: Mike Marshall Christoph Hellwig Randy Martin Becky Ligon Walt Ligon Michael Moore Rob Ross Phil Carnes Signed-off-by: Mike Marshall <hubcap@omnibond.com>