File RELNOTES-1.8.0~pre5 of Package openafs

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File RELNOTES-1.8.0~pre5 of Package openafs (Revision 76defbf8384e010636d77305096bdf24)

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User-Visible OpenAFS Changes

OpenAFS 1.8.0pre5

All Platforms

* Substantial code quality improvements, largely spotted by Coverity and
      clang's static analysis.
      - Add new library for platform independent functions (opr).
      - Remove arbitrary path name length limits.
      - Convert to Heimdal's roken library for reliability.
      - Avoid garbage in allocated buffers (calloc).
      - Modernize signal handling in pthreaded server processes (softsig).
      - Improve code comments and additional Doxygen style comments.
      - Reduce compiler warnings, dead code, unused variables, and
        undefined behavior.
      - Fix bugs found by static code analyzer (clang-analyzer).
      - Improved unit test coverage.
      - Make VLDB flag definitions consistent.
      - Improve use of run-time assertions and add static assertions.
      - Add compiler attributes to assist static analyzers.
      - Clean up include headers in the entire tree.
      - Improve command-line handling library (libcmd).
      - Replace hash functions with Jenkin's hash function for faster
        and more evenly distributed lookups.
      - Provide a red-black tree data structure to enable algorithmic speedups.
      - Convert backup and salvage servers to the common logging API (libutil).
      - Improve volume id data type consistency (VolumeId).
      - Import APIs for kerberos-style profile configuration support.
      - Add new APIs to support UserList identities.
      - Add new APIs to support tabular output from command-line utilities.
      - Convert vnode macros to inline-functions.

* Improved support for non-DES encryption types:
      - Convert to Heimdal's hcrypto library to support RFC 3961.
      - Add extended key file format replacing rxkad.keytab, and
        new key management APIs.
      - Add support for extended key types to asetkey.
      - Add akeyconvert to assist in upgrading to OpenAFS 1.8.x by converting an
        existing rxkad.keytab file to an extended key file.
      - Do not install the kaserver and related utilities by default to
        discourage the use of these DES-dependent components.
      - Remove obsolete klogin and klogin.krb programs.
      - Add new token APIs to support new rx security classes.

* Migrate from LWP to POSIX threads (pthreads):
      - Convert the ptserver and vlserver from LWP to pthreads.
      - Remove LWP version of the file server binary.
      - Convert afsd, aklog, asetkey, klog.krb5, pts, udebug, and vos, from LWP
        to pthreads.

* Improvements to Rx:
      - Restructure the Rx API to privatize the implementation.
      - Convert rx events to a red-black tree data structure to improve
        performance.
      - Convert from mutexes to atomic operations for counters to reduce lock
        contention.
      - Provide per-opcode Rx statistics.
      - Add an rx_opaque data type to support non-DES encryption types
        and general code cleanup.
      - Wake up the application thread after 'twind' is updated to avoid 100ms
        transmit delays when the receive window transitions from closed to
        open.
      - Fix for OPENAFS-SA-2017-001: sanity-check peer transport parmeters
        received in ack trailers

* Libraries (both internal and installed) are built using libtool, including
      libuafs. The resulting shared libraries for libafsrpc and libafsauthent
      should be more usable than previously.

* Improvements to the build system:
      - Convert to libtool to build shared libraries.
      - Clean up and improve the build system.
      - Support out of tree builds.
      - Add a makefile target to generate Doxygen source code documentation.
      - Link the Java API for OpenAFS with libuafs.a and remove the
        libjuafs.a library.
      - Always build the rxperf tool.
      - Fix man-page generation by make after ./regen.sh -q
      - Support the SOURCE_DATE_EPOCH environment variable to improve build
        reproducibility.
      - Modernize language specific SWIG typemaps for libuafs Perl bindings.
      - Refactor acinclude.m4 into a set of smaller m4 files (12876, 12877, 12878)

* Improvements to documentation:
      - Document the new KeyFileExt file.
      - Reorganized the README files.
      - Improvements and fixes to documentation generation.
      - Add experimental epub and mobi support
      - Remove obsolete LWP information from the file server documentation.
      - Update and reorganize the Quick Start Guide.
      - Update the Admin Guide.
      - Remove AIX, HP-UX, and IRIX information from the Quick Start Guide.
      - Document the vldb and prdb (ubik) file formats.
      - Add PtLog man page.
      - Corrections and clarifications to man pages.
      - Add ubik threading analysis doc.
      - Normalize the location of text documents in the source tree.

* Improvements for troublshooting, debugging, and testing:
      - Log more details on volume-server-to-fileserver communication errors
        when possible.
      - Set thread names in pthreaded servers on platforms which support
        thread names.
      - Add dynroot lock tracking to cmdebug
      - Fix tracking of an fstrace call site in the cache manager background
        process.
      - Add the afsload tool to simulate multiple cache managers for file server
        load testing.
      - Add run-time checks for refcount imbalances in the cache manager.
      - Fix missing newlines in afsd -debug output.

* Developer tool improvements:
      - Improvements and fixes for rxgen (used to generate Rx RPC bindings).
      - Add tool for man page verification of command options.
      - Add tool to find Unix cache manager lock identification numbers.
      - Add an option for pretty build output.

* RPM packaging updates:
      - Update the spec file to keep up with accumulated changes.
      - Move the klog.krb5 man page to the openafs-krb5 sub-package.
      - Remove stray man pages. (12870, 12871)
      - Prevent double-starting client on RHEL7
      - Convert rpm spec file from deprecated 'make dest' to 'make install'.
      - Fix rpmbuild command line option default handling.
      - Support older versions of rpmbuild which do not support the
        rpmbuild %exclude directive. (12873)
      - Move the legacy kaserver and related programs to separate sub-packages,
        which are only built when rpmbuild is given the '--with kauth' option
        (12600, 12872)

* Add a new protection error code (PRNAMETOOLONG) instead of silently
      truncating names which exceed the maximum name length (PR_MAXNAMELEN).

* Add an implementation limit (50000) on the number of names/ids which can
      be transmitted by unauthenticated clients to the ptserver, avoiding
      excessive resource consumption from unauthenticated requests.

* Add the -config option to vos, pts, and aklog to specify the path to the
      cell configuration files.

* Add more details in vos release -verbose output.

* Add the cacheout -encrypt option to encrypt communication between the
      cacheout client and the fileserver.

* Add the command line options to the afsio program to enable encryption of
      traffic between afsio and the fileserver (-clear, -crypt).

* Add the vos release -force-reclone option to force recloning the volume to
      be released without forcing a full volume dump being transmitted to all
      remote sites.

* Fix vos to avoid writing loopback addresses into the VLDB in
      certain cases.

* Print bos and pts error messages to standard error instead of
      standard out.

* Improve formatting of the -help output of all commands.

* Change -n to -dryrun in all backup subcommands.

* Change the backup deletedump -port command line option to -portoffset.

* Add user and build host in the version string returned by
      rxdebug -version.

* Support recent versions of gcc (7.2.1) (12897)

All Server Platforms

* Ubik servers using pthreads are now available and are used by default

* As part of improving Ubik reliability in certain edge cases, an extra
      election cycle (about 60 seconds) may be needed before writes are
      permitted.  This is a conservative change that may be removed in
      the future.

* Avoid continually retransmitting the ubik database to remote sites when
      a write transaction occurs as remote sites are attempting to rejoin the
      ubik cluster. (12896)

* Ensure the ubik database version number is updated on remote sites at the
      point the database is transferred to remote sites instead of waiting for
      the next ubik beacon. This avoids write transaction failures during the
      window between the database transfer and the next ubik beacon (12885).

* Remove periodic background fsync by the fileserver (ihandle fsync thread).

* Fix potential file handle leak in the file server ihandle caching layer.

* Disable the so-called "hot threads" feature in the file server. The hot
      threads feature was intended as an optimization for dispatching incoming
      calls to the current listener thread, but has been reported to incur a
      performance penalty on modern multi-core systems.

* Do not permit creation of users with id of ANONYMOUSID.

* Do not save/restore host states in the fsstate.dat file for hosts which
      are in the process of retrieving CPS information from the ptserver when
      the fileserver is being shutdown. This fixes a bug in which the fileserver
      will incorrectly block all threads following a restart.

* Add the ptserver -restrict_anonymous option to inhibit exposure of user
      names from the ptserver.

* Do not truncate server log files by default when server processes
      are started.  The -transarc-logs option provides backward compatibility
      with IBM AFS log handling on server startup. Log messages may be lost
      in back-to- back restarts when a server is running in this mode.

* Reopen server logs on SIGUSR1. This may be used by third-party log
      rotation tools, such as logrotate, to reopen the log file handles after
      log files have been renamed.

* Fix various bugs when logging with -mrafslogs enabled.

* Dynamically reload the kerberos realm to AFS cell mapping (krb.conf) and
      exclusions for mapping kerberos principals to AFS identities (krb.excl)
      configuration when the CellServDB cell configuration file is touched.
      Previously, a restart of the file server was required after updating the
      kerberos mapping configuration files.

* Add a command line option (-restricted_query) to the vlserver and
      volserver to restrict information queries about volumes to a specific
      group of users.

* Add a command line option to the server programs to specify an alternate
      fully qualified log file name (-logfile).

* Add a command line option (-config) to the server programs to specify
      an alternate path to the server configuration.

* Add a command line option to the ptserver and vlserver to specify an
      alternate path to the database data files.

* Add a command line option to the volume server to enable encryption of
      volume-server-to-volume-server-traffic (-s2scrypt).

* Increase the maximum number of LWP threads allowed for the ptserver and
      vlserver from 16 to 64 (-lwp).

* Remove an unused file server command line option (-k).

* Fix an incorrect assertion in Demand Attach File Server which could cause
      the file server process to abort in certain rare conditions.

* Deprecate the -bitmap-later configure option for non-Demand-Attach File
      Servers (DAFS).

* Add -vhashsize support to non-Demand-Attach File Servers (DAFS).

* Add support for subnet ranges in the NetInfo and NetRestrict
      configuration files.

* Add the GetXStats RPC to the audit log.

* Fix directory creation by bosserver when built for non-Transarc paths.

* Fix incomplete list of server addresses retreived by vos listaddr when the
      vldb contains unreferenced multi-homed server entries.

* Remove obsolete bos blockscanner and unblockscanner commands that
      were only needed for the removed MR-AFS functionality.

* Remove obsolete bos salvage options that were only used by the
      removed MR-AFS functionality..

* Remove calls to the deprecated sbrk() function.

* Add an experimental feature to database servers to support ubik reads
      while write transactions are in progress, enabled at build time with the
      --enable-ubik-read-while-write configure option. This feature is not
      considered ready for production usage at this time.

* Avoid filling the FileLog with "Volume x offline: not in service" when
      a volume is administratively taken offline with vos offline.

* Print an error message when bosserver is started with an unknown
      command line option.

* Modify the volume updateDate when the volume is changed by a salvage.

* Volume usage statistics are now preserved during reclone and restore
      operations by default, the behavior previously enabled by
      the -preserve-vol-stats flag to the volserver.  The historical behavior
      can be retained via the -clear-vol-stats argument.

All Client Platforms

* Use rxkad_crypt by default for connections to fileservers.  This matches
      the existing behavior of the Windows client and has been applied by
      the distribution packaging on many platforms already.

* Add support for relative ACL changes with fs setacl. If a single plus (+)
      or minus (-) character is appended to the rights' letters argument, the
      new rights are computed relatively to the existing ones.

* Remove afsd -settime and afsd -nosettime support.

* Add the afsd -inumcalc option to specify the method used to calculate
      inode numbers presented by AFS.

* Add the afsd -volume-ttl option to specify set the maximum amount of time
      information retrieved from the vlserver will be cached, regardless of
      callback expiry times.

* Return EIO on internal errors instead of the misleading ENOENT.

* Log ICMP errors received, if any, for unreachable servers.

* Improve performance of clients with multiple PAGs for different cells.

* Fix race condition between changing and using user tokens among cache
      manager threads.

* Fix fs sysname for users with UID 2748 and 2750 when not running
      in -rmtsys mode.

* Add Perl bindings for the user-space cache manager library (libuafs).

* Fixes to the bypasscache feature.

* Fix fs getcacheparms miscounts.

* Remove the obsolete Netscape plugin.

* Fix building gtx when ncurses is linked against libtinfo.

* Update to the GCO CellServDB update from 14 March 2017.

Linux

* Remove Linux 2.2 and 2.4 support.

* Changes to avoid EIO errors with multiple processes doing intensive mmap
      writing. (Drop PageReclaim AOP_WRITEPAGE_ACTIVATE.)

* Prevent fakestat data inconsistencies in certain cases (131855).

* Fix dentry leak which can cause a crash on shutdown.

* Fix improper use of ENOENT and avoid incorrect use of linux negative
      dentry cache.

* Use a more correct (less aggressive) scheme to react to downward
      pressure on cache usage, avoiding d_invalidate(), which can cause
      getcwd() failures on RHEL 7.4.

* Improve error reporting when encountering corrupt directories.

* Improve rx error handling in the Linux cache manager.

* Rename kpasswd to kapasswd when packaging RPMs to avoid colliding with
      Kerberos kpasswd.

* Do not use the obsolete --enable-largefile-fileservers configure option
      when packaging RPMs.

* In Red Hat packaging, use a separate rpm for kmod debuginfo,
      removing a needless tight version dependency on the userspace package.
      (12822, 12875)

* Use the RemainAfterExit systemd feature to avoid premature exit
      when -afsdb is not given, for RPM packages.

* Remove Debian packaging files from the OpenAFS source tree. Debian
      packaging files are currently maintained in the downstream Debian
      infrastructure.

* Add the sparc_linux26 sysname.

* Desupport 32-bit Linux kernels on s390/s390x.

* Fix Debian/Ubuntu build regression on kernel 3.16.39.

* Fix --enable-kernel-debug for linux 4.8+.

* Fix a hang encountered when accessing a previously removed
      directory entry (12811).

* Support linux 4.10, 4.11, 4.12, 4.13, 4.14, 4.15

Solaris

* Remove support for all Solaris and SunOS platforms prior to Solaris 8.

* Build 64-bit binaries for Solaris x86 by default.

* Use one-group PAGs on Solaris 11, which is required for PAG support
      on Solaris 11 since supplemental groups must be sorted starting with
      Solaris 11.1.

* Update search paths for solaris cc for recent versions Solaris Studio.

* Modernize declaration of module dependences by converting from the
      deprecated _depends_on symbol to ELF dependencies.

* Avoid BAD TRAP panic due to invalid opcodes on x86 with Studio 12.5.

* Add ctf debug records to Solaris kernel modules when debug builds
      are enabled and the ctf tools are present (ctfconvert/ctfmerge).

* Save kernel module function arguments on x86 for debugging purposes.

MacOS

* Stop processing upcalls once rx shutdown starts.

* Enable atomics for the darwin kernel.

* Add a syscall to enable/disable bulkstat at run-time, which is
      disabled by default.

* Fix path to binaries in the prefpane.

* Fix builds on MacOS 10.12 by building only the active architecture
      by default.

* Support versions up through 10.13 (High Sierra) and APFS

FreeBSD

* Use the native kernel module build system instead of an ad hoc
      replacement build system.

* Remove FreeBSD packaging files from the OpenAFS source tree. FreeBSD
      packaging files are currently maintained in the downstream FreeBSD Ports
      Collection.

* Stay up to date with new FreeBSD releases (through 10.3).

* Do not claim AFS_VM_RDWR_ENV

* Add sysnames and files for i386 and amd64 10.4, 11.1, and 12.0
     (12-CURRENT, at present). (12887, 12888)

* Remove trailing semicolons to fix the build on FreeBSD (12899)

NetBSD

* Stay up to date with new NetBSD releases (through 7.x)

* Update to use cprng(9) as the randomness source on NetBSD 6.99/7.x.

* Build system updates for NetBDS 6.99.x

* Do not claim AFS_VM_RDWR_ENV

OpenBSD

* Stay up to date with new OpenBSD releases (through 4.7)

* Do not claim AFS_VM_RDWR_ENV

AIX

* Updates for AIX support.

* Fix build system for AIX exports.

* Add the uidpag and localuid runtime options to the aklog LAM plugin.
      (These runtime options override the use of UID-based PAGs, which were
      introduced to appease the CDE screensaver.)

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File RELNOTES-1.8.0~pre5 of Package openafs (Revision 76defbf8384e010636d77305096bdf24)

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