src/sys/nfsserver, branch releng/12.2

sys: general adoption of SPDX licensing ID tags.

2017-11-27T15:23:17Z

Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.

sys: further adoption of SPDX licensing ID tags.

2017-11-20T19:43:44Z

Mainly focus on files that use BSD 3-Clause license. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. Special thanks to Wind River for providing access to "The Duke of Highlander" tool: an older (2014) run over FreeBSD tree was useful as a starting point.

Renumber copyright clause 4

2017-02-28T23:42:47Z

Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann Pull Request: https://github.com/freebsd/freebsd/pull/96

Use M_SIZE() instead of hand-crafted (and mostly correct) NFSMSIZ() macro

2015-01-07T17:22:56Z

in the NFS server; garbage collect now-unused NFSMSIZ() and M_HASCL() macros. Also garbage collect now-unused versions in headers for the removed previous NFS client and server. Reviewed by: rmacklem Sponsored by: EMC / Isilon Storage Division

Remove the old NFS client and server from head,

2014-12-23T00:47:46Z

which means that the NFSCLIENT and NFSSERVER kernel options will no longer work. This commit only removes the kernel components. Removal of unused code in the user utilities will be done later. This commit does not include an addition to UPDATING, but that will be committed in a few minutes. Discussed on: freebsd-fs

The VOP_LOOKUP() implementations for CREATE op do not put the name

2014-12-18T10:01:12Z

into namecache, to avoid cache trashing when doing large operations. E.g., tar archive extraction is not usually followed by access to many of the files created. Right now, each VOP_LOOKUP() implementation explicitely knowns about this quirk and tests for both MAKEENTRY flag presence and op != CREATE to make the call to cache_enter(). Centralize the handling of the quirk into VFS, by deciding to cache only by MAKEENTRY flag in VOP. VFS now sets NOCACHE flag for CREATE namei() calls. Note that the change in semantic is backward-compatible and could be merged to the stable branch, and is compatible with non-changed third-party filesystems which correctly handle MAKEENTRY. Suggested by: Chris Torek Reviewed by: mckusick Tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 2 weeks

Change NFS readdir() to only ignore cookies preceding the given offset for

2014-07-01T20:00:35Z

UFS rather than for all but ZFS. This code was assuming that offsets were monotonically increasing for all file systems except ZFS and that the cookies from a previous call may have been rewound to a block boundary. According to mckusick@ only UFS is known to do this, so only requests against UFS file systems should remove cookies smaller than the given offset. This fixes serving TMPFS over NFS as it too does not have monotonically increasing offsets. The comment around the code also indicated it was specific to UFS. Some of the code using 'not_zfs' is specific to ZFS snapshot handling, so add a 'is_zfs' variable for those cases. It's possible that 'is_zfs' check for VFS_VGET() support may not be specific to ZFS. This needs more research and testing. After this fix TMPFS and other file systems can be served over NFS. To test I compared the results of syncing a /usr/src tree into a tmpfs and serving that over NFS. Before the fix 3589 files were missing on the remote view. After the fix all files were successfully found. Reviewed by: rmacklem Discussed with: mckusick, rmacklem via fs@ Discussed at: http://lists.freebsd.org/pipermail/freebsd-fs/2014-April/019264.html MFC after: 2 weeks Sponsored by: EMC / Isilon Storage Division

The PR reported that the old NFS server did not set uio_td == NULL

2014-04-24T20:47:58Z

for the VOP_READ() call. This patch fixes both the old and new server for this case. PR: 185232 Submitted by: PR had patch for old server Reviewed by: kib MFC after: 2 weeks

Update kernel inclusions of capability.h to use capsicum.h instead; some

2014-03-16T10:55:57Z

further refinement is required as some device drivers intended to be portable over FreeBSD versions rely on __FreeBSD_version to decide whether to include capability.h. MFC after: 3 weeks

Fix RPC server threads file handle affinity to work better with ZFS.

2013-12-23T08:43:16Z

Instead of taking 8 specific bytes of file handle to identify file during RPC thread affitinity handling, use trivial hash of the full file handle. ZFS's struct zfid_short does not have padding field after the length field, as result, originally picked 8 bytes are loosing lower 16 bits of object ID, causing many false matches and unneeded requests affinity to same thread. This fix substantially improves NFS server latency and scalability in SPEC NFS benchmark by more flexible use of multiple NFS threads. Sponsored by: iXsystems, Inc.