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User-Visible OpenAFS Changes
OpenAFS 1.6.0 (2011-08-15)
All platforms
* Substantial Rx updates to correct erroneous behavior.
* vos now properly deals with matching sites when servers are
multihomed.
* Don't stop Rx keepalives after an ackall is received, avoiding
spurious connection timeouts. (128848)
* Don't retry Rx calls on channels returning busy errors and improve
Rx busy call channel error handling. (128671)
* Properly enable Rx connection hard timeouts.
* Rx NAT pings are not enabled until peer has answered.
* Initialize rx_multi lock before use.
* Avoid spurious crashes when initializing in "backup" client.
* Revert UUID support in vos.
* pt_util fixed to properly create new databases.
* MTU discovery now properly shut down on call reset.
* Avoid leaking references to hosts during callback break multi-Rx
operations. (129376)
* xstat tools now cope with differing timeval structures between
endpoints.
* Numerous fixes to command argument parsing.
* Documentation updates.
All server platforms
* A file descriptor leak which could result in corrupted files in the
fileserver was fixed. An IMMEDIATE upgrade from previous 1.5 release
fileservers is recommended.
* Fix ptserver supergroups support on 64 bit platforms.
* Demand attach salvaging doesn't use freed volume pointers.
* Properly hold host lock during host enumeration in fileserver.
* Attempt to recovery more quickly from timed out volume release
transactions.
* Auditing now properly byte order swaps IP addresses when printing.
* vos split now has improved error handling.
* Many changes to again support Windows fileservers.
* During volume removal, data removal speed improved.
* Improve CPU utilization during volume attaching by DAFS.
* In salvager check-only mode, avoid potentially fixing a vnode.
* Fix support for large (greater than 2gb) volume special files.
* Salvager will not crash if multiple or bad volume link tables are
encountered.
* Avoid erroneous full dump by remembering which sites were out of
date at the start of the release.
* A deleted volume can now be recreated properly.
* Callbacks are again not broken during whole partition salvages.
* Positional vectored IO fixed for largefile (>2GB) capable systems.
* Fileserver per-client thread usage again properly enforced.
* Anonymous dropbox support improved and drawbacks documented.
* Demand attach: ensure vnodes are not reallocated while in use due to
volume bitmap errors.
* Properly support large volume numbers (larger than 2147483647).
* Allow salvager to be run manually again when DAFS is being
used. (129458)
* Avoid leaking references to hosts during callback break multi-Rx
operations. (129376)
* Demand attach: unlink fileserver state file on standalone salvage.
* Salvager tries harder to detect linktable issues.
* Demand attach: don't attach volumes with special status set.
* Avoid crashing on host table exhaustion. Instead, defer clients.
Microsoft Windows
* afs_config will not longer set the Tray Icon State in the registry
if the checkbox is not present in the dialog. (128591)
* AFS Explorer Shell Extension now works from folder backgrounds.
Overlays for mount points and symlinks are present in the dll, but
are not registered at present by the installers.
* Do not use RankServerInterval registry value as the value for
PerformanceTuningInterval.
* When the data version of a mountpoint or symlink changes, the target
string in the cm_scache_t object must be cleared.
* "fs checkservers" now includes vldb servers in the output and only
lists multi-homed servers once. A multi-homed server that has at
least one up interface is no longer considered to be down.
* When asynchronously storing dirty data buffers to the file server
ensure that (a) the cm_scache_t object and the cm_buf_t object are
for the same File ID so that locking and signalling work properly;
and (b) if the FID no longer exists on the file server, do not
panic, just discard the buffer.
* When processing VNOVOL, VMOVED and VOFFLINE errors perform server
comparisons by UUID or address and not simply by cm_server_t
pointer. Otherwise, server failover may not succeed.
* Do not preserve status information for cm_scache_t objects when the
issuing server is multi-homed.
* Giving up all callbacks when shutting down or suspending the machine
is now significantly faster due to the use of an rx_multi
implementation. (This functionality is still off by default and
must be activated by a registry value.)
* Race conditions were possible when updating the state of the
cm_volume_t flags and when moving the volumes within the least
recently used list.
* Ensure that the lanahelper library does not perform a NCBRESET of
each lan adapter when enumerating the current network bindings.
Correcting this permits OpenAFS to work on Windows 7 when the
network adapter settings change.
* Fix creation of mount points and symlinks as \\AFS\xxxx
* Icon tray state now conditionally set. (128591)
* Properly create new cell mount points in freelance mode.
* Avoid recursive offline volume checks.
* Fix caching of non-existent volumes. The test to trigger an
immediate CM_ERROR_NOSUCHVOLUME in cm_UpdateVolumeLocation() was
backwards.
* Prevent the background daemon from checking the status of
non-existent volumes. cm_CheckOfflineVolumes() should skip volume
groups with the CM_VOLUMEFLAG_NOEXIST flag set.
* The afskfw library should return an error immediately if the
krb5_32.dll library cannot be loaded. Affects afslogon.dll and
afscreds.exe.
* No longer depend on leashw32.dll in afskfw library.
* NPLogonNotify must provide the user password in all calls to
KFW_AFS_get_cred(). It cannot count on a credential cache being
preserved between calls. Permits tokens to be acquired for all
cells listed in the TheseCells registry value for a domain.
* Improve the trace logging from NPLogonNotify().
* Avoid a race when writing the cm_scache_t mountPointString
when acquiring mount point or symlink target data via
cm_GetData(). The race could result in bogus target
data being cached.
* Permit the use of des-cbc-md5 and des-cbc-md4 enctypes
as DES keys in asetkey.exe.
* aklog supports dotted Kerberos v5 principal names.
* afskfw library always attempts afs/cell@USER-REALM
* afskfw library must test return code from krb5_cc_start_seq_get() or
will trigger a null pointer exception when using Heimdal.
* Lock protected fields must be 32-bit in order to avoid memory
overwrite races.
* Add support for NTFS symlinks.
* Handle file search requests for virtual syscall ioctl file.
* Process SyncOps properly to enforce ordered operations.
* Avoid recursing during NewServer operations.
* Correct lock acquisition order during SMB locking.
* Add shutdown message to event log.
* Check offline volume status by policy rather than on each daemon
thread run.
* Return error on directory object not found instead of crashing.
* Improve error message output.
* afslogin.dll can start afsd_service if it's not starting or started.
* Optimize away release lock RPCs for deleted files.
* Background Daemon will not perform operations on deleted files.
* Resort recently used directories to the top of the LRU if the
directory is larger than the stat cache.
* Resort deleted objects to the bottom of the LRU.
* Use interlocked operations for state and queue fields to allow safe
bit set and clear on multiprocessor systems.
All UNIX client platforms
* Servers now marked down when GetCapabilities returns error.
* In-use vcache count is now properly tracked.
* Check for /afs existance before starting, unless -nomount is
specified.
* Avoid a potential panic when using /afs/.:mount syntax.
* Avoid a panic in memcache mode due to missing CellItems file.
* FUSE client support fixed for non-/afs mounts.
* Avoid a potential deadlock (which times out) when we need to
allocate more callback returns and must flush some already in use.
* Deal with libcom_err conflicts with other packages using it
(e.g. krb5) (128640)
* Fall back to afs3-vlserver SRV record values when afs3-ptserver SRV
record is not available.
* Avoid holding unneeded locks when probing server capabilties.
* Do not attempt page flushes for directories.
* Rx connection reference counting is enabled.
* An Rx connection reference count leak is fixed in bulkstat.
* Handle unparsable directory objects.
* Handle Kerberos cred cache errors in aklog.
AIX
* Fix PAG usage to track by PAG identifier, not group list.
FreeBSD
* Fix socket termination on shutdown.
* Support for 7.2, 7.3, 7.4 and 8.2 included.
* References to vcaches are no longer leaked during root or reclaim.
* Remove support for "Giant" lock as we no longer need to use it.
* Don't sleep with AFS GLOCK.
* Properly enable 64 bit long long support.
* Restore support for FreeBSD 7 (128612)
* Fix locking issues at shutdown and avoid panic at shutdown due to
vcache flushing.
* Support for virtual network stacks.
* New RC script, updated packaging.
IRIX
* Properly create new vnodes to avoid crashing in the client.
Linux
* Support through kernel 2.6.39. Treat Linux 3.0 as Linux 2.6 for
sysname purposes.
* Use rx_Readv in cache bypass to improve performance.
* Properly handle 0-length replies during cache bypass operations.
* Properly handle non-contiguous readpage cache bypass operations.
* Do proper locking when transitioning to or from cache bypass.
* Avoid extra runs of vcache freeing routine. (128756)
* Perform vcache eviction via a fast path before visiting vcaches
where sleep is needed.
* setpag() errors are now properly reported.
* Avoid attempting to free stat cache entries when we are below
user-specified number of entries in use.
* Properly track user-specified number of stat cache entries to use as
a desired usage target.
* Don't read pages beyond EOF in the cache. (128452)
* Various corrections and improvements to Red Hat packaging, including
modifying the init script to allow deferring for a new binary
restart and properly supporting RHEL6.
* Fix lockup in 2.6.38 due to erroneous kernel feature configure test.
* Improve RPM building tools.
* Attempt to properly handle SELinux in packaging.
* Init script properly returns status as exit code.
* RPM packaging fixes (executable libraries, no postinstall message)
* Kill i386 from RPM packaging.
MacOS
* MacOS 10.7 support.
* Properly handle setpag errors. PAGs are not supported.
* Check for unloaded kernel extensions when decoding AFS panics.
* Disable "get tokens at login" in prefs pane if AD authentication
plugin is configured.
* aklog AuthorizationPlugin now provided.
* Preferences Pane behavior fixed for 1.6 series (version detection is
used to select default behavior).
* A potential kernel panic during bulkstat operations is
fixed. (128511)
* 64-bit MacOS kernel performance is greatly improved. (128934)
* Properly shut down AFS, closing the Rx socket in the upcall handler
to avoid attempting to process data after we can no longer do so.
* Rework logic for bulk status operations to avoid a potential hang.
* Avoid panic when doing FSEvent synthesis.
* Fix bug when using non-dynroot.
* Update Kerberos support in PreferencesPane.
NetBSD
* Updates for platform support.
OpenBSD
* Bug fixes for issues introduced previously in 1.5 series.
* Support through OpenBSD 4.8.
Solaris
* Switch to ioctl() syscall replacement for Solaris 11 since syscall
65 is not safe.
* Fix support for Solaris pre-10.
* Corrected Solaris 11 startup script.
* vcache mappings freed on shutdown to avoid panic.
* Properly report errors for AFS system call callers.
* Don't leave dangling function references if kernel extension fails
to load.
* Try harder to avoid deadlocks on file-larger-than-cache operations.
* Avoid panic on shutdown when mount failed.
OpenAFS 1.5.78 (2010-11-04)
All platforms
* Revisions to Rx to fix performance issues.
* Make fs getfid behave consistently across all platforms. (128372)
* Properly check IDs handed to pts when creating users or groups so
useful error messages can be provided. (128343)
* Correct byte order handling of port in afsconf_LookupServer for SRV
records.
* Force a full dump when releasing to a site which was previously
marked "don't use", in case the previous clone was out of date.
All server platforms
* Demand salvage of attached volumes now correctly track attachment
state.
* Avoid a potential crash due to failure to hold a lock when attaching
a volume fails.
Microsoft Windows
* Track SMB connections by SID rather than username.
* Error write attempts to known-readonly volumes earlier.
* Validate directory buffers to avoid potential crashes.
* Handle VIO errors from bulkstatus.
* Make PMTU discovery configurable and register error handlers for it.
All UNIX client platforms
* Use larger I/O sizes in memcache to improve performance.
* Avoid potential alignment issues doing I/O for pioctl calls.
FreeBSD
* Avoid panicing if the listener process is not findable.
* Avoid deadlock issues while performing lookups.
Linux
* Handle stale file handle errors for some cache partition types.
* Avoid blocking with xvcache lock when attempting to free in-use
vcaches.
* Build fixes for older kernels.
* Properly configure LWP to use ucontext() on platforms where it
should.
* Eliminate spurious errors from AFS system call returns. (126230)
MacOS
* Attempt to honor configured Kerberos defaults in Preferences Pane.
OpenAFS 1.5.77 (2010-09-08)
All platforms
* Rx path MTU detection will terminate detection in cases where the
minimum required packet size cannot be transferred.
* vos dryrun mode now shows effects for syncvldb single volume case.
* vos dryrun mode now shows "status after" for syncvldb and syncserv.
All server platforms
* RXAFS_GetStatistics64 now returns statistics properly.
Microsoft Windows
* Attempt to properly identify the local system SMB connection for
token tracking.
* Remap timeout and offline errors to proper NT RPC errors.
* Properly fail over to other replicas on bulkstat IO errors.
* Properly error delete-mode createfile if a file is set readonly.
* Validate directory entry buffers to avoid crashing the service.
* Log file modes properly.
* Log cell name when logging server information.
All UNIX client platforms
* cacheout program for discarding callbacks is now built.
* bulkstatus kernel locking is corrected to avoid a potential panic.
Dragonfly BSD
* userspace support update
FreeBSD
* Updated vnode locking for children returned via lookup().
* Avoid file open undercount with needed calls to
FakeOpen/FakeClose().
* Use vnode_pager_setsize to properly track file size during kernel
IO.
* Update system call installation.
* Fix shutdown of Rx kernel listener to avoid potential dereference
after it's gone.
* Avoid closing vnodes during vnode recycle.
* Fix bogus call to FlushVS for vnode reclaims.
Linux
* Packaging updated for current configure options and built files.
* Cache bypass now holds reference on pages during readpage.
* s390x setgroups32 patching update.
MacOS
* DNS resolver is reinitialized on IP address change. (126440)
OpenAFS 1.5.76 (2010-08-16)
All platforms
* Updates to build-time configuration.
* Fix XDR support in Rx to match header definition.
* vos status now shows transaction creation, not action creation.
* Rx avoids reporting loopback adapters when listing interfaces.
All server platforms
* Demand-Attach Fileserver always built and installed (dafileserver,
davolserver, dasalvager).
* Return VNOVOL from fileserver when a volume is deleted.
* Ignore duplicate tags during volume restore operation.
* Update inode array after salvage repairs volume.
* Zero a corrupted header in memory during salvage to avoid further
corruption.
* Fix NAMEI backend to allow low-numbered volumes to work properly.
* ptserver does not include cell name as part of length check for
names.
* Updated error messages for unblessed volumes.
* vlserver avoids buffer overflow with regex pattern
* Attach-time failures now note failures as the rest of the fileserver
would.
* Server argument logging will no longer overflow stack.
* Provide fast-restart-like unsafe-nosalvage option for DAFS.
* Deal with host hash collisions in the fileserver.
Microsoft Windows
* Avoid crashing when interpreting a drive letter as potentially
matching a cell name.
* Properly handle volume package errors.
* Allow page recycling from known-readonly content without ensuring
they are not dirty.
* 32 bit tools installer should not override client configuration.
* Ensure root scache item has a valid callback when use is attempted.
* Freelance directory changes now properly invalidate and replace the
old root object.
All UNIX client platforms
* Support disconnected reconnecting with specified UID for PAGless
platforms.
* Proper disconnected vnode reference tracking.
* Update server site blacklisting to not return success if nothing was
blacklisted.
* Avoid a panic during vcache contention due to CVInit vcache
racing. (127645)
FreeBSD
* Update for network stack in 8.1/9.0.
HP-UX
* Bug fixes.
Linux
* 2.6.36 support
* Disable PMTU error packet handling.
* flock() fixes.
* Debian packaging updated.
* freezer interface updates.
MacOS
* Hold references to disconnected mode written vnodes properly.
Solaris
* Handle NFS translator module references for amd64.
* INODE fileserver backend support now exists for amd64.
OpenAFS 1.5.75 (2010-07-07)
All platforms
* Prevent rx_rpc_stats global lock from being a bottleneck.
* Path MTU discovery is now provided to allow traffic to pass networks
with sub-1500 byte MTUs and poor fragment handling.
* Further reduce Rx NAT ping transmission when enabled.
* Update Kerberos 5-based token handling in rxkad from upstream
Heimdal. (127554)
* Update version numbers emitted during build to reflect what is
actually being built.
* Add "-human" switch for human-readable units in fs diskfree and
listquota. (124529)
* vos provides reasons for locked volumes when known.
* Do not count retransmission and ping acks as non-idle for Rx
connections.
* Rx: provide service-specific data getter and setter routines.
* Update build-time Kerberos detection.
* Updated userspace AFS client.
* Beginning of a modernized test suite.
* Additional documentation.
* Updated documentation, notably the Administrators Guide.
* Substantial code cleanup.
All server platforms
* Update handling of vnode allocation failures.
* DAFS: allow salvaging volumes not known to the fileserver, to allow
cleanup of data not attached to a current volume.
* Properly handle volumes slated for destruction.
* Handle volumes with many files properly.
* Force core file generation in bosserver by overriding default
resource limits when possible.
* Update vlclient and vldb_check.
* Avoid potentially corrupting a volume on creation if files are left
from previous failed cleanup.
* Note volume changed during salvage as needed.
* DAFS: do not assume invalid addresses are in fileserver address hash
table.
* Avoid tying up fileserver threads with volumes that are being taken
offline.
* Do not set inUse on volumes for non-DAFS other than in fileserver.
* Break origin's callback on target of rename operation.
* Avoid unneeded parent directory link updates during some rename
operations.
* Do not open /dev/console for writing in the fileserver.
* DAFS: avoid spurious restarts when binary restarts are configured.
* Avoid spurious and unneeded calls to sync(), which can slow down the
fileserver.
Microsoft Windows
* Revised SMB QuerySecurityInfo to address issues caused by MS10-020
(http://support.microsoft.com/kb/980232)
* Prevent use of the AFSCache file contents if mapped to a new
address.
* Make fs newcell include behavior compatible with the non-Windows
version.
* Provide a registry option (FreelanceImportCellServDB) to pre-create
mount points in the AFS root for all cells in CellServDB.
* Fix a memory leak in the cm_FreeServerList() routine.
* Reduce privilege when reading registry CellServDB.
* Add support for RPC Pipe Service NetWkstaGetInfo levels needed for
Windows 7.
* Prevent overflow when computing quota percentage in Explorer Shell.
(126846)
* Generate meaningful errors for ACL operations on freelance AFS root.
* Fix error handling on InlineBulkStatus RPCs.
* Show configuration pages for all types of MSI installations.
* Improve freemount AFS root directory handling and operations.
* Properly validate GetVolumeStatus pioctl responses.
* Commit file length changes and dirty buffers when flushing a file.
All UNIX client platforms
* Update version of files for disk cache.
* Do not call afs_FlushVCBs with xvcache lock held, to improve
parallelization.
* Add mariner log messages for creating and removing files.
* Don't hold xvcache lock while creating symlinks, to improve
parallelization.
* Provide -dynroot-sparse mode to not show all cells in CellServDB in
dynroot mode.
* Avoid a potential crash in aklog in linked cell handling.
* Log MTU-caused packet retransmission.
* Prevent crashes caused be fs checkservers while cache is being set
up.
* fs getserverprefs now has a buffer large enough for the default
CellServDB.
* Report server address when logging warnings.
* Avoid panic in GetCapabilities when cell is not known.
* Lock process name and id for advisory lock warnings when possible.
* Handle need for allocating additional Rx packets.
* Properly handle errors from InlineBulkStatus operations.
* Fix errors returned from fcntl() on readonly files locked for write.
* Flush pending changes to the server on LOCK_EX unlock.
* Reflect length changes as a result of callbacks even when file is
open for write.
* Avoid hanging due to error exit when attempting to store a large
file to a non-largefile fileserver.
* Recover from afs_GetVolSlot errors.
FreeBSD
* Bugfixes for kernel VFS and network routines.
IRIX
* Provide makesname().
Linux
* Avoid syscall probes when keyrings are present, by default. (125215)
* Remove "Big Kernel Lock" from VFS operations.
* Use filehandles for all Linux 2.6 versions to avoid need for matched
afsd. (127530)
* Updated RPM packaging.
* Fix dkms configuration provided with RPMs.
* Hold reference on pages during background I/O for cache bypass.
* Fix cache bypass handling of non-largefile fileservers.
* Protect truncate_inode_pages mappings with mutex or semaphore as
needed.
* Fix pagevec use in cache bypass. (127505)
* Updates for 2.6.35
MacOS
* Improve launchd configuration.
* Avoid hanging on recursive cache file lock acquisition when user
notification is enabled.
* Fix and re-enable bulkstat mode.
OpenBSD
* Build updates.
Solaris
* Precluding unmount while AFS is busy.
* Avoid deadlocking when releasing the VFS object.
* Stop network interface poller in kernel on AFS shutdown.
* Avoid issues with lookups on empty directory names. (127356)
OpenAFS 1.5.74 (2010-04-22)
All platforms
* Add "vos setaddrs" command.
* Rx library lock contention avoidance between rx_NewCall and
rx_EndCall.
* Rx library races due to inconsistent use of rx_connection
conn_data_lock to protect the flags field.
* Rx library inconsistent use of RX_CALL_TQ_WAIT which could result in
deadlocks.
* Rx library must signal transmit queue waiters when flushing.
* afsmonitor shows busy counts now.
* afsmonitor displays xstat callback statistics.
* Provide expandgroups for pts mem on a supergroups server.
* Provide supergroup option to liste nested groups during pts mem.
All server platforms
* Avoid volume lock contention during DAFS startup.
Microsoft Windows
* Avoid a race when updating cell vldb server lists that can result in
a crash.
* Avoid a deadlock when managing CM_SCACHESYNC_STOREDATA state
operations for directory objects.
* Add new Windows Application Event log messages for VBUSY,
VRESTARTING, ALL_BUSY, ALL_OFFLINE, and ALL_DOWN.
* Reduce lock contention by waiting for cm_buf_t I/O operations.
* Split the cm_buf_t flags field to separate the flags that are
protected by the cm_buf_t mutex from those protected by the
buf_globalLock.
* In cm_UpdateVolumeLocation, avoid searching for a ".readonly" volume
on a numeric volume name.
* File buffer allocations whose offsets are beyond server EOF should
be locally allocated and zero filled. The file server should not be
issued a FetchData rpc which is guaranteed to fail.
* Enable integrated logon to work with Windows 7/2008 when user logons
are performed with a non-Domain Kerberos principal.
* Add Protection Error messages to aklog output.
All UNIX client platforms
* Provide a FUSE-interfacing userspace afs client.
* Updates to libuafs userspace cache manager.
* Probe servers using GetCapabilities instead of GetTime, thus
requiring fewer RPCs.
* Fix DNS SRV record handling for cell lookup.
FreeBSD
* Fix sleep/wakeup routines.
* Update for 8.0 release.
Linux
* Handle high memory addresses correctly.
MacOS
* Make 32 bit AFS syscalls work again.
* Work around finder "Duplicate" failure (caused by setting modes on
symlinks).
* Disable bulkstat again (will be re-enabled at or before .75).
* Provide symlink type hints during readdir.
OpenAFS 1.5.73 (2010-03-24)
All platforms
* NAT keepalive support at Rx level.
* Corrected SRV record support for cell name canonicalization.
All server platforms
* Fix volume callback notification to not notify unaffected clients.
(126497)
* Allow root directory recreation by salvager. (94658)
* Numerous DAFS fixes.
* Improvements to callback table overflow handling. (126451)
* bosserver now shuts down cleanly on SIGTERM.
Microsoft Windows
* Prevent the Explorer Shell extension from crashing if symlink
creation failed. (126406)
* A Rx level NAT ping has been implemented. A registry value enables.
* Adds krb5 error message translation to aklog, afscreds,
afslogon.dll, the network identity manager afs provider and
translate_et.
* Default mode bit settings for file and directory creation are now
provided, and can be configured.
* An SMB request trace facility is provided and can be enabled for
debugging.