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Merged robust security code into Orange-Branch.

fix configure

fixed scandir def to compile with both new and old versions
added step in iocommon_readorwrite to generate PVFS_Request

added configure items for acl includes

initial working versionof usrint code
auto configures usrint on an ucache off (not working yet)
new acl repimplemented - old one has #def
some minor format edits

updates to support kernels newer than 2.6.38. Changes include use of DEFINE_SPINLOCK, change file_system_type struct to use mount instead of get_sb, and add a flag to dirty_inode member of super_operations. In all cases, leave previous behavior in place when newer and older options both exist.

merge with Orange-Branch

uuid converstation, PVFS_x_position changes, server/client side first pass done

update configure checks and kernel code for 2.6.38

merge with Orange-Branch

first pass of changes to support kernel changes in 2.6.36 and removal of the BKL. note: no locking has been added to the ioctls so it may not yet be safe

merge with Orange-Branch

additional kernel module changes around xattr_handler and fixing of checks from HANLDER to HANDLER. Also add check for fsync in newer kernels that don't take second dentry parameter

add true/false enum if stddef.h doesn't have it defined as is the case in early 2.6 kernels

merge with Orange-Branch

changes to pvfs2-config.h.in due to kernel.m4 changes to support new kernels

merge with Orange-Branch

Modified configure.in for release 2.8.3, updated pvfs2-config.h.in, and reran
prepare to generage configure.

Modified configure.in with PVFS2_VERSION_SUB=3 and added PVFS2_VERSION_RELEASE
to pvfs2-config.h.in and then regenerated configure

orangefs experimental 20101012 release (distributed directories)

Merged in changes from Orange-Branch. There were a number of bugs fixed there since this branch was created.

Fixed warnings when compiling on 64 bit

orangefs 20100920 release

change configure back to non-release

release 20100920

merging Orange Branch changes in

initial merge with Orange-Branch. much will be broken

removed old enable/disable security options

merge of B2O-Blue-Sync,HEAD,and latest of Orange.

commiting changes from merge of Orange and Blue into test branch.

add 2.8.2 changes to ChangeLog.  Update configure for 2.8.2 version.

merge 2.6.32 kernel updates from trunk to pvfs-2-8-branch

fixes for 2.6.32:
- configure test for backing_dev_info.name field
- configure test for bdi_init()  (first appeared several versions ago)
- trust kernel to handle dirty inode list automatically on unmount

updated kernel.m4 needs new configure.

fixes for 2.6.32.

This includes primarily two build fixes:

* sysctl proc handlers >2.6.31 don't have a file pointer parameter.  Added configure check and proper #ifdefs.

* The writeback bdi changes introduced in 2.6.32 move parameters from the super_block struct to the bdi_writeback struct in backing-dev.h.

damnation! merge from HEAD: http://www.pvfs.org/fisheye/changelog/PVFS/?cs=MAIN:pcarns:20090914183535

merge from HEAD: http://www.pvfs.org/fisheye/changelog/PVFS/?cs=MAIN:pcarns:20090911152912

merge from HEAD: http://www.pvfs.org/fisheye/changelog/PVFS/?cs=MAIN:pcarns:20090721184004

merge from HEAD:

configure test to handle the fact that 2.6.29 no longer has fsuid/fsgid
fields in the task_struct structure

revert earlier commit re: driver class support; seg faults on some kernels

Modified version of patch from Nick Mills; detect different variations on
device class api, but disable class functions entirely for RHEL4 kernels.

Merged NWU's CUDA code.
Modified configure script and Makefile to enable CUDA compilation.

Merge with work from this summer.  Metadata and data storage spaces can now be located on different disks.  Fixed a small bug in string encoding.  Updated test code to reflect new Trove dual-storage space API.  Genconfig updated as well as affected admin apps. In the correct branch this time.

merged in changes from summer at LANL

patch from Bart Taylor; moves permission checking code back to common
directory in order to add safety checks for truncate operation permission

initial support for solaris.  doesn't include /dev/epoll support.  See trac ticket #97.

configure test to handle the fact that 2.6.29 no longer has fsuid/fsgid
fields in the task_struct structure

merge changes from 2.8 branch to HEAD.

fixes for 2.6.28 kernel.

Make pvfs2.h include the version numbers to be exported.  This allows consumers of the sysint calls to determine which parameters to include.

merging hints/events code into trunk.

add tau formatting code from Aroon.

reverse merge from HEAD to directio branch

patch from Sumit Narayan to fix remaining compilation problems with 2.6.27
kernel related to permission function changes

2.6.27 adds a 5th way to lock address_space mappings

New configure test to fix one of the compile problems with 2.6.27
kernels.  The kmem_cache interface change that we detected in 2.6.24 has
changed yet again.

reverse merge of changes to HEAD since branch.  Includes small file changes.

merge trunk updates down to small-file-branch.  Passes basic tests but needs
some double checking of pint-cached-config and sys-create conflicts.

Modified version of patch provided by Sumit Narayan to fix bug reported by
Ryuta Suzuki.  Allows pvfs2 kernel module to build against 2.6.26.

adding threaded odirect impl

Reverse merged and ported to HEAD.

Added fsx-mpi.c - tests PVFS2 file system semantics using MPI.

reverse merge of trunk changes since branch.

reverse merge latest trunk changes to small-file-branch and update msgpair
usage where needed

Merge from HEAD.  Fleshed out credential.  Encode/decode added for credential and cleaned up for capability.  Added capability/credential into request/response structures.  Fleshed out comments in security module.

configure tests for noatime mnt flags (needed for RHEL4 at least)

Patch from Murali to implement file_aio_write_iovec as well as export
operations for NFS export on newer kernels.

Still need to test on older kernels to see if additional configure tests
are needed.

Added --enable-security=[none, rsa, dsa] into configure.in to enable toggling of security features for export/import.

reverse merge of latest changes from HEAD to he branch.

Updated branch with code from HEAD

merge i_sem/i_mutex configure check from trunk to pvfs-2-7-branch

configure test to account for 2.6.15->2.6.16 change from using inode->i_sem
to inode->i_mutex for inode locking

merge a collection of configure test updates from trunk to pvfs-2-7-branch;
this fixes the kmem_cache tests for platforms like rhel4

syncing small-file-branch back up with trunk at small-file-branch-point2 tag
(reverse merge)

merge a bunch of fixes made to HEAD since 2.7.0.

merge kmem cache two param changes to 2.7 branch.

kmod: remove Werror tests

A couple of kernel configure tests that looked at linux/fs.h were
failing due to spurious warnings from elsewhere in the kernel, at
least on a recent rhel5 gcc and 2.6.24-rc1.  Rewrite these to avoid
using -Werror by identifying more easily testable features and
testing for those instead.  Easy means generates an error, not just
a warning, and thus is easier to confirm in the presence of other
unrelated warnings.

merging device class configure test updates from trunk

updated device class configure test to make sure we don't give a positive
result on RHEL4 kernels

kmod: read inode

From Sam.  2.6.25-rc1 removes the .read_inode member in
struct super_operations.  We can continue to use the same
function, just not include it in the structure.  Add a
configure test for this too.

Sam's prelude and scheduler updates

Following a patch by murali, fix the changed signature on kmem_cache_create
constructor functions in the kernel.  Also add missing include for struct
kmem_cache declaration needed on new kernels.  Please test if you have
something old.

Accommodate new rwlock type in struct address_space.  From murali with
fixes.

merge kernel rt checks to HEAD

this too.

from HEAD: cherry-pick the "make it build with 2.6.23" fixes

linux 2.6.23 introduces exportfs.h

fix kmod compile with kernels earlier than 2.6.23

2.6.23 changes the kmem_cache_create() API

dare i dream that this is the last feature test needed for linux-2.6.6 kernels?

somewhere between 2.6.6 and 2.6.20 the 'struct page' changed the 'count' member
to '_count'

add a feature test for the FS_IOC_* flags.  These were turned into generic
versions sometime around 2.6.20 and don't exist on 2.6.6 (where I happen to be
compiling pvfs today...)

remove mistaken add of kzalloc check.

merge of Murali's immutable extended attribute changes and read-caching kmod changes.

generated files

generated files

Generated files (big, sorry)

mx fixes

Merge HEAD changes to TAS-branch.

merge lk v21 fixes to branch

fixes for linux kernel version 2.6.21

fixes to build on darwin

walt3 reverse merge from head includes merges of pw's sm changes (no state declarations), cleanup of state machine code, and other general merging/fixes.

merge recent fixes from HEAD

fixup berkeley db invocations to be backward compatible with older versions of bdb

Upgrade to current CVS version..

merge 2.6: fix f[sg]etxattr checks

fix bad kzalloc check.

get the f[gs]etxattr checks right so that older platforms build (sles8)

Update migration branch to current CVS version

Sync hint-branch to current CVS version

this should get the branch building against the recently released 2.6.20 kernel

kzalloc checks

commit checks for kzalloc that older kernels don't support

merge 2.6 branch changes to head

regenerated build files

Synchronization with HEAD

revert changes that duplicate pete's fixes for 2.6.19

commit Murali's fixes for 2.6.19 and the fs function pointers:

http://www.beowulf-underground.org/pipermail/pvfs2-developers/2006-November/002900.html

generated files

merge pw's fixes to the 2.6 branch.

generated files

Upgrade to current CVS version

fix problems on ppc64:

* make all segment count variables unsigned long
* cleanup warnings caused by config checks failing due to warnings
* cleanup warnings caused by invalid llu macros defined from configure

from HEAD: 2.6.18.1 no longer provides linux/config.h

merge latest changes in 2.6 to head.

commit of new configure

from HEAD: deal with the 2.6.18.1 removal of i_blksize (turns out this approach
is fine after all)

commit generated files

in 2.6.18.1 kernels, linux/config.h now complains whenever included.

Ok, this gets us compiling again, but is almost assuredly not the correct way
to deal with the removal of i_blksize

reverse merge of HEAD to WALT3 branch.

merge from 2.6 branch

changed version to 2.6.0.pre...  Also changed tarball and dir names for packages to pvfs-...

More cleanups of the non contig vfs interfaces.
- Consolidate readx and writex paths similar to the earlier consolidation for regular read and write
- Remove the conditional HAVE_FILE_READX and HAVE_FILE_WRITEX and redefine xtvec structure so that
  we could reuse this for doing large I/O through the page-cache with non-contig file offsets
- Added configure time checks for xtvec structure to determine whether to redefine xtvec or not..

- Support for immutable files
- Cleanups in the pvfs2-bufmap interfaces (replace int with size_t)
- Utility for displaying extended attributes and setting them
- Support for disabling atime updates at the object level, file system level (mount time)
  and directories.

backmerging of HEAD to branch...

Patch addresses the long standing issue of handling 64 bit handles in the kmod
without collissions. This basically involves migration from an iget() interface
to locate inodes to the iget(45)_locked() interface. The basic problem boils down to
not depending on inode->i_ino member field for the handle.

Replace all occurrences of inode->i_ino to the appropriate function for extracting the
actual 64 bit handle.

Patch also fixes a bug in lookup by replacing a return NULL with a return to ERR_PTR(-ENOMEM)

Fairly well tested on 2.6 kernels on x86 and x86_64 machines. Minimal testing on 2.4 kernels.

correct the openssl LIBS issue

fix for configure failures if ssl libs don't exist.

Merge HEAD into Walt's branch.
Rework new state machines to the new cleanups introduced by Walt.

updates to openssl checking.

Merge posix-extensions-branch to HEAD
This branch implemented patches to the 2.6.16 kernel for the proposed POSIX I/O extensions and those patches are under
the patches subdirectory.
It also implements the PVFS2 specific hooks for these system calls.

Tools that may be of immediate use to the pvfs2 general audience is the pvfs2-lsplus utility in src/apps/admin
that should be noticeably faster than the pvfs2-ls utility if there are a lot of objects in a single directory.
Other features are left out by configure and are not even built if the kernels do not support those features
and callbacks.

Merge from HEAD to posix-extensions-branch...
This should facilitate merging the posix branch to HEAD...

Added crypto digests utility functions and configure time checks for openssl libs and includes
so that pvfs2-ping utility can now optionally check whether fs.conf files are the same on
all servers..
i.e. pvfs2-ping -m /pvfs -c will now print whether fs.conf integrity checks fail or pass.
Some of the infrastructure used here will be useful for doing SIGHUP handling at the server
so that fs.conf or server.conf files may be refetched etc..

Alternative Trove implementation branch with Trove transaction support for db >= 4.3.

change pre version back after tagging

Added support for the getdents_plus_lite and getdents64_plus_lite system calls.
and the pvfs2 hooks for it.
Turned out to be fairly simple..
Also added modifications to the getdents program under test/posix.
It now accepts a -l command line parameter to use the new system call when -p is also specified.

Reverse merges from HEAD..

configure check for an openib API change

reverse merge from trunk.  working for now.

Reverse merge changes from HEAD to posix-extensions-branch.

Fixes for the upcoming 2.6.18 kernel. pointed by RobL.
->get_sb() now takes a vfsmount structure and returns an integer instead of the sb encoded
as an error. We can now reference sb by peeking into the vfsmount structure.
->statfs() now takes struct dentry instead of a struct sb*. We can of course deref dentry->d_sb
to get to the sb.
configure changes to support the argument changes.

sigh.. at this rate it might be better to use fuse or merge pvfs2 in kernel :)

more of the same

Patch fixes the atime, mtime and ctime problems that people have
reported with PVFS2.
Patch changes the notion of who sets these times. Earlier behavior was the
clients providing the times to the server. New behavior is to have the
server set these times except in  the implementation of utimes() system
call whereby clients explicitly set the time (atime and mtime).
NOTE: We dont allow the clients to dictate the ctime setting at all since
that is consistent with all file systems.
So what we have is:
read, readdir -> atime update required
write, truncate -> mtime update required
ctime is updated on every setattr implicitly on the server.

Since there is no need for parent_*time fields in the server request for chdirent,
crdirent and rmdirent, the next step is to remove those fields, fix the endecode
macros and bump up the major version of the protocol.

Patch also implements these times lazily by flushing them only at the time
of a close rather than after every read/write which could be pretty
expensive.

Checkin of previous patches

reverse merge of recent bug fixes from trunk

*sigh* the 2.6.17-rc6 kernel changes the return type of invalidatepdage.
Harmless to leave this as-is, but does take care of a warning.

Reverse merge from trunk to lockd-branch...

reverse merge of branch

reverse merge of trunk to branch

merges fixes that went into head for consolidating I/O paths (read, write) and (readv, writev)

Also contains the hooks for implementing readx, writex natively in PVFS2. (the vfs patch is part of the patches
sub directory). This involved adding the following infrastructures
a) Have a way of sending a variable length trailer as part of the upcalling mechanism. Currently the readx, writex
implementation upcalls the file offsets, length pairs as this variable length trailer.
b) Client-core has a new upcall request (called FILE_IOX: very unimaginative name :))
which now does a isys_io with file_req set to req_hindexed as opposed to contiguous for FILE_IO upcalls.
c) Client-core does a read of the upcall from the device, if it finds that trailer is present, it does another read
from the device.
d) kmod which maintains the pvfs2_kernel_op_t structures in the request list needs to keep the
structure around in the list (and not insert in the in-progress hash table) if the op has an upcall trailer.
kmod has hooks for feeding either the op or the trailer depending on the which read call comes into the device.
It also has hooks for delaying adding the op to the hash table until the trailer is picked off the device.
e) Added a bunch of test programs for the new readx/writex system calls.. Seems to pass tests on an x86 laptop!

Also contains fixes and cleanups of the readdir/readdirplus implementattion which required a variable length trailer as
part of the downcall. These cleanups enable a very symmetrical implementation of variable length upcall
and downcalls!

build support for openib

looks like autoconf-2.13 generates broken configure scripts now.

use the formerly unused variable so we pass or fail this test correctly

Reverse fixes from trunk for build fixes with 64 bit compat platforms on 2.4 kernels.

Lee Whatley reported that the compat 32 patches did not build/work correctly on old(er) 2.4 kernels.
Fixes to address that. Basically 2.4 kernels did not have many of the functions that 2.6 has to allocate
user space addresses on the caller stack (perhaps, the ABI itself has changed or something, dunno).
Anyways, work-around is to invoke the handler directly instead of calling sys_ioctl..

Includes reverse merges from trunk
in addition, it includes fixes for readdir and readdirplus to have a variable length
number of directory entries passed in from client-core using a trailer page (currently).
However, there is nothing that prevents us from sharing those pages with the kernel using vmap
and friends which is the next logical step.
So client-core now does a readdir/readdirplus and writev's the trailer page (which is essentially
an encoded version of the readdir/readdirplus response) to the kmod.
The kernel module decodes that and copies it to the user-space app (which issued the getdents/getdents_plus
system call)
Added/edited the getdents.c test program in the test/posix sub directory to issue
getdents/getdents64/getdents_plus/getdents64_plus system calls
Also fixed a critical bug that was somehow never triggered in readdir if the buffer size
provided by glibc/user was not sufficient enough and we advance the f_pos token beyond where we stopped.

generated file; part of strerror_r checkin

First cut of the sys_readdirplus implementation where clients can issue a single
system interface call to get the directory entries as well as the attribute information
of the directory entries.
What this means is that we do not need to call a sys_getattr of the individual directory entries
anymore.
(The kernel version is still untested and won't work until the VFS patch is in place! :))

On the server, there is now a new request/state machine called listattr(poor name, i know!)
which essentially does a vectored getattr for a list of handles as opposed to a getattr
which only does for 1. Perhaps, we need to consolidate them into 1 at a later point of time after
others have given this code a look-see!
On the client, there is a new system interface, and a corresponding statemachine implementation
called readdirplus which does the following algorithm
a) Step 1 - Do a regular readdir
b) Step 2 - Collate all meta handles (obtained from the readdir) and send out 1 listattr
to every server that owns atleast 1 handle from the set.
c) Step 3 - Handles that refer to metafiles (determined by the attributes of the response)
need an additional step to retrieve their file sizes. So we collate all data file handles
of all metafiles, and send out 1 listattr to every server that owns atleast 1 handle from
the set.
d) Step 4 - Copy object attributes obtained for all objects into the sys response structure and
also compute file sizes of regular files since we know the individual dfile handles' file sizes
from Step 3.

Clearly, this is a huge win in terms of performance of listing directories which have large number of directory
entries.
Next step is to hammer out the VFS patches and coreutils patch for ls to get the same benefit.
Also added a new utility called pvfs2-lsplus in src/apps/admin that uses this API.

Added hooks for vfs getattr_lite() callback to implement statlite() and friends of the POSIX
I/O system call extensions in PVFS2
and the necessary VFS infrastructure and system call stubs.

Added a few more missing files and fixes from HEAD to lockd-branch.
lockd-branch should build cleanly now.

Added synch. server files to the branch

PVFS2 specific hooks for implementing openg and openfh.
This includes callbacks for
a) fill_handle as part of the inode operations structure.
b) find_inode_handle as part of the super operations
c) get_fs_key as part of the super operations
and statfs_lite() also as part of the super_operations structure.
Credit to Sam for implementing a secure key per fsid that is used for the crypto
verifications of the handle buffer.

Timing information is also added so that every time critical operation
is logged for openfh/openg.

commit of murali's 64bit fixes.

onekeyval merge

reverse merge from trunk.  see if sio tests pass now as well.

fixes for darwin with latest AIO_THREADED support turned on.  Use union sigval instead of sigval_t.  Check for extra args to fgetxattr.

2.6.16 (and the FC5 2.6.15-1.2054_FC5 kernel) no longer provide update_atime.
Use touch_atime, which appears to be in all 2.6 kernels.  Add a configure-time
test so we can fall back to the older update_atime method.

test for fgetxattr prototype. turns out it could be in <sys/xattr.h> on some
older systems.

fix compile error and merge from trunk

mostly working onekey impl

from HEAD: (minus typo) deal with really old systems that might not have
            fgetxattr(2)

fgetxattr doesn't exist on some really old systems.  Since those old systems
won't have xattributes anyway,  let pvfs2-viewdist fail gracefully

merging changes from HEAD to dbpf branch

work around some kernel api changes

add configure check to detect read_descriptor_t changes

add config test for HAVE_PROC_HANDLER_SIX_ARG missed from previous patch merge.  Add enabled declaration missed in acache.c as well.

Some systems (Debian, Ubuntu) don't have the attr/xattr.h header file, causing
a build failure.  On these systems, the fgetxattr symbol is in libc.  Murali,
if there's a better way to fix this, feel free

Added a sendfile callback to the pvfs2 file_operations structure so that Apache
can work off PVFS2 volumes.
This callback does not make use of the page-cache to avoid any of the associated
consistency problems.

fixed a bug in flow caused by outsize being updated correctly in trove now.  Also, s/transfered/transferred/.

fixes to small io stuff to get test-zero-fill working again.  Also committing updates from HEAD to make things easier for merge.

make changes to 1.3.1 as well

fix LP64 issue with Lu/Ld/Lx that I borked with the darwin patch.

* malloc.h is obsolete in freebsd, check for it
* No error.h in freebsd
* linux allows Lu,Lx, and Ld to be interchangeable with llu,llx, and
lld.  Other platforms (solaris, bsd) don't.  Replaced all the L*
with ll*.
* bsd doesn't have mntent.h.  use fstab.h and our own funcs.
* bsd doesn't know about ssize_t.  Use size_t instead.
* bsd doesn't have asm errnos.  Check for each of those
errno macros and if not defined define to -1
* check for db3/db.h db4/db.h header if db path is specified using
--with-db
* darwin has aio support builtin, doesn't need -lrt
* remove kernel stuff in pvfs2-types.h that sets WORDSIZE.  gcc
defines __LP64__ on archs with 64bit longs so we use that instead.
* darwin's open doesn't accept O_LARGEFILE.  off_t is an int64 by
default.  define O_LARGEFILE if it hasn't been.
* need to run ranlib on darwin after libpvfs2.a gets installed to regenerate
table of contents

Added configure options to feature detect aio support in the kernel headers
We dont enable aio for 2.4 kernels and for 2.6 kernels we disable aio support
for early 2.6.x kernels (where x < 8, I think)
	The configure test checks whether the kiocb structure provides a ki_dtor()
	method to cleanup operations such as aio_cancel and for freeing allocated
	memory. We use this method to determine whether to disable or enable.
Hopefully, this should get us to build on older 2.6 kernels..

[pcarns]: configure time test for prototype of setxattr: sometimes it has a
const argument, sometimes it doesn't.

big portabilty commit:  exteneded attributes and ACLs now extensively
feature-tested and #ifdef protected.  tested against 2.4.19, 2.4.31, 2.6.5,
2.6.11.10, 2.6.12.5 and 2.6.13.3 (yes, they are all different!)

*sigh* ... linux/xattr_acl.h was removed in 2.6.13, so now we have to
AC_CHECK_HEADERS it

added murali's xattr patches.

updates to my event changes to bring them inline with trunk

feature-test for extended attributes. thanks murali

merge changes from trunk since branch point into branch.  Effectively moves the branchpoint to the latest trunk.

[pcarns]: add a new bmi method that can resolve connections from unexpected
requests into hostnames

remove old automake setting, check for a certain kernel structure

Fixing configure so that when with-db is set, we try to actually link
against that version of db in configure tests.

Modified configure.in to test for epoll functionality when it is requested.
This is prep for always checking for epoll.

* added event logging for states
* moved state debug code to state-machine so all state start/end
points get debug messages automatically
* added textlog stuff.  This allows us to write the default event
queue out to a text file that can be converted to slog2 later.

define i_size_read, i_size_write, and parent_ino if we fail a feature test.
some 2.4 kernels (suse 8) backport these routines from 2.6

Added workaround for missing gethostbyname.

Added test for gethostbyname.

Removed use of getprotobyname(); I don't think anyone cares, and it will fix
things on scyld, and eliminates an issue on BG/L.  Also test for netdb.

More little tweaks to the configure/make process to help with BG/L builds.

merging in bugfix-39 branch

best fix for bugzilla #39: user intervention required if building on one of the
redhat distributions that ships a heavily modified 2.4 kernel. if you are
building kernel.org kernels, you can disable the redhat workaround

Additional test to see if third parameter to DB error callback is const.
We expect that it is, but it isn't strictly related to the previous test.

Added detection and fix for new dbenv parameter to DB error callbacks (4.3.xx).

Patch to fix testing for txnid parameter to DB stat operation.

- ib: add configure-time checks for mosal library variations
- ib: flush send queue work requests periodically
- ib: search receive queue for both eager and rts (D. Beilloin)

stub in just a tiny bit of the bmi gm cancel function and fix a few old
comments

revert configure script back to one generated using autoconf 2.13; one of
our macros related to the test directory build doesn't work in 2.5x

Added PVFS_error_details functions and definitions for use in partial success
handling cases.  Not called anywhere yet.

moved pvfs2-client* source from test/kernel/linux-2.6 to
src/apps/kernel/linux-2.6; still need to update some scripts and
documentation to reflect the change

check for DB_DIRTY_READ flag.  the db (version 3.2.9) on Jazz does not have it

can now use MPE or Pablo to profile pvfs2.  still needs more work.

- add configure test for sys/sysinfo.h (should be on all linux machines)
- add memory and uptime information into the (now ill-named) statfs object
- update pvfs2-statfs to display this newly added information

- redefine WORDSIZE definition so as not to need pvfs2-config.h
- remove installation of pvfs2-config.h
- remove configure checks for sizeof(long) [ no longer needed ]
- version bump to pvfs2-0.0.8pre2, because pre1 is old and boring now

added --enable-segv-backtrace option to configure, turns on server side
behavior of dumping a stack trace if a seg fault is received

- configure test for size of long
- assign __WORDSIZE in kernel space based on it

- changelog update
- removed extra berkeley db error reporting since it's not integrated with
  our gossip error reporting system.  can now be explicitly enabled using
  a new configure option --with-berkdb-debug

This is a full merge of my pvfs2-dbpf-attr-cache-branch, so this is
the cumulative changelog (based on existing cvs messages).

- initial dbpf-attr-cache implementation and cleanups
- added all the hooks to grab configurable cacheable metadata keys
  from a config file.  re-arranged the config file by separating out
  fs specific hints into a StorageHints area.  updated genconfig to
  account for these changes.
- initial working implementation of the unified dbpf-attr and
  keyval/data pair cache.  holy cow this thing is fast... much work to
  be done still.
- initial locking added
- replaced debug level with a new DBPF_ATTRCACHE_DEBUG level
- added safe to/from cache data copies
- added write-through caching for keyval data (still need to do generic attrs)
- updated simple.conf
- allow config file to have multiple AttrCacheKeywords lines
- fix some cache parts that allow symlinks to work (i.e. be cached)
- added a verbose warning for a particular kind of configuration error
  for a user to see if it should happen
- some more robust configure checks
- more configure related changes
  disable vis build if sdl is detected, but sdl-ttf isn't
- fix broken ifdef nesting that caused compilation failure on non
  aio-threaded configurations
- safe copy of attributes (to/from, preparing for write-through impl)
- server cleanups (making way for pre-caching of a number of attrs on server
  startup since it reads them from disk during handle iterate anyway)
- update create test program to report human readable creation error
- put some quick human readable error reporting in pvfs2-client-core
- added some quickhash method we've been wanting but never had
- implemented policy to limit previously unbounded size of attr cache
- adjusted simple.conf to have some good defaults
- adjusted pvfs2-genconfig to match those defaults
- fixed some htable cleanups
- started write-through attr updates
- update changelog and version info, preparing for mainline merge
- implement write-through of dbpf-resize operation
- make sys-truncate return -PVFS_EINVAL if truncate is called on an object
  that can't be truncated
- fix error code return value of sys-truncate
- cosmetic changes to truncate test program output
- added some comments
- updated showconfig with copyright info
- updated sample configs for showconfig
- added a default handle purgatory value if a value of zero is specified
  (e.g. not specified in config file at all)
- for now, remove the cached dbpf-attr object on i/o writes
- slightly robustify the glibc aio callback detection

added all the hooks to grab configurable cacheable metadata keys from a config
file.  re-arranged the config file by separating out fs specific hints into
a StorageHints area.  updated genconfig to account for these changes.

new configure test, check for sdl ttf support before enabling perf vis tools

added a proof of concept vis tool (pvfs2-vis-bw-2d), very rough cut at drawing
real time bar graph of server throughput.  backend (pvfs2-vis.c) should
be good, though.  Also added some configure stuff to find SDL if it is present

bump cvs pvfs2 version number;
initial draft of vfs truncate support;
re-enabled intent lookups getattr skips;
temporarily disabled pvfs2-client-core pcache usage

added glibc backtrace to gossip_lerr() call, and configure test to
enable it if execinfo.h is detected on the system

check for getmntent, give helpful message at compile time if it isn't there
(parse_pvfstab() relies on this now)

pushed the decimal values for major,minor, and sub version numbers
into pvfs2-config.h and used as a basis for protocl version number

make sure the new LNKTARGET constants are consistent and properly auto
generated

Corrected the custom strstr implementation; moved the
PINT_config_get_debug_mask function from server-config.c into pvfs2-debug.h as
PVFS_debug_eventlog_to_mask; fixed broken configure check for strstr

Wrote an eventlogging to pvfs2 debug mask conversion function for understanding
config files and hooked it up so that the server uses it.  Since this method
uses strstr, I've also implemented a version in case the system doesn't have
that function (including the appropriate configure test, etc).

Made some config file changes for supporting some new keywords (LogFile,
EventLogging).  Also fixed a slight bug that caused a server to not start
properly unless the RootHandle was in its meta handle range (as opposed to
any server's meta handle range).  Renamed FS_Name in the config file to be
Name instead.  Finally, made sure that anything that can appear in the
<Defaults> block can be overridden by placing an entry of the same Tag in
the server.conf (for server specific overrides).

Showconfig test program is updated to make sure the parsing logic is sane.
The LogFile and EventLogging fields are not being used actively yet by the
server.

some small portability things: implemented a backup strnlen we can use on
platforms that don't have it. test for some headers, too.

modified id-generator to use a configure test to determine pointer size,
rather than some non-portable header define.

this code is still kind of goofy, though; need to clean up...

Added a configure test for byte ordering

one of the makefile includes was listed twice in configure.in

added configure tests and beginnings of some makefile changes to support
building the BMI GM module if GM is found

Started work on a fake flow protocol that doesn't do any I/O but just
dumps debugging information instead.  Not done yet.

marked profiling and coverage options as not yet working.

Moved string functions from src/server/lookup.c into a new
src/common/misc directory file called str_utils.c

Monster checkin:
- removed the trove "fs" files, which are no longer in use.
- added dbpf-collection.c, which keeps up with multiple collections in use
  at one time.
  - hooks in place in dbpf implementation to theoretically handle multiple
    collections; untested (works for one collection).
- added trove-create-stress.c, a stress test for object creation.
- added TROVE_SYNC flag as an option, which is handled in most calls.
- found and removed a number of problems in error handling in dbpf calls.
- created pvfs2codecheck to identify issues in the code to be cleaned up.
- eliminated a number of memory leaks in trove dbpf.
- moved flags into top of the op structure in trove.
- implemented (but did not test) dspace_verify().

Added test for unknown parameter to DB stat.

Updated these.

Enabled use of "malloc trace" via --with-mtrace to configure.  Currently enabled in the trove initialize; we should eventually get the initialize call moved into some higher level initialize call in the library and in the server.

Imported sources

Initial revision