rf_testcode.c

RAIDFrame是个非常好的磁盘阵列RAID仿真工具

/*
 * Copyright (c) 1995 Carnegie-Mellon University.
 * All rights reserved.
 *
 * Author: Mark Holland, Rachad Youssef, Jim Zelenka
 *
 * Permission to use, copy, modify and distribute this software and
 * its documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 *
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
 * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * Carnegie Mellon requests users of this software to return to
 *
 *  Software Distribution Coordinator  or  [e-mail]
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 *
 * any improvements or extensions that they make and grant Carnegie the
 * rights to redistribute these changes.
 */

/*********************************************************************
 *
 * rf_testcode.c -- test code for the user-level version of the driver
 *
 *********************************************************************/

/*
 * $Locker:  $
 * $Log: rf_testcode.c,v $
 * Revision 1.127  1996/08/21  19:46:58  jimz
 * fix constant-fail bug in write array test
 *
 * Revision 1.126  1996/08/21  03:47:38  jimz
 * check Q mapping in layout test
 *
 * Revision 1.125  1996/08/20  21:54:26  jimz
 * improve diagnostics of file write/read test
 * add ability to fail disks to file write/read test
 *
 * Revision 1.124  1996/08/20  20:05:27  jimz
 * add undocumented 'k' switch to script test to specify
 * which disk to constant fail
 *
 * Revision 1.123  1996/08/20  14:44:59  jimz
 * fixed handling of async disk failing in simulator
 *
 * Revision 1.122  1996/08/19  22:26:03  jimz
 * add double-degraded async test to RealLoopTest
 *
 * Revision 1.121  1996/08/02  13:20:14  jimz
 * change default dataSectorsPerStripe
 *
 * Revision 1.120  1996/07/31  15:33:50  jimz
 * add chang's double-failure test
 *
 * Revision 1.119  1996/07/28  20:32:51  jimz
 * true/false cleanup
 *
 * Revision 1.118  1996/07/27  23:35:53  jimz
 * Solaris simulator port
 *
 * Revision 1.117  1996/07/26  22:00:52  jimz
 * fix non-RF_DEMO compilation problem
 *
 * Revision 1.116  1996/07/22  21:11:22  jimz
 * added new write array test
 *
 * Revision 1.115  1996/07/22  19:52:16  jimz
 * switched node params to RF_DagParam_t, a union of
 * a 64-bit int and a void *, for better portability
 * attempted hpux port, but failed partway through for
 * lack of a single C compiler capable of compiling all
 * source files
 *
 * Revision 1.114  1996/07/18  22:57:14  jimz
 * port simulator to AIX
 *
 * Revision 1.113  1996/07/15  05:40:41  jimz
 * some recon datastructure cleanup
 * better handling of multiple failures
 * added undocumented double-recon test
 *
 * Revision 1.112  1996/07/15  02:56:53  jimz
 * enhanced looptest and recon test debugging
 * enhanced recon test
 *
 * Revision 1.111  1996/07/13  00:00:59  jimz
 * sanitized generalized reconstruction architecture
 * cleaned up head sep, rbuf problems
 *
 * Revision 1.110  1996/07/11  17:13:16  jimz
 * added async fail+recon+copyback to looptest
 *
 * Revision 1.109  1996/07/10  22:28:29  jimz
 * allow double-failure in loop test
 *
 * Revision 1.108  1996/06/20  17:41:52  jimz
 * simplify parity verification API
 *
 * Revision 1.107  1996/06/19  22:23:01  jimz
 * parity verification is now a layout-configurable thing
 * not all layouts currently support it (correctly, anyway)
 *
 * Revision 1.106  1996/06/17  14:38:33  jimz
 * properly #if out RF_DEMO code
 * fix bug in MakeConfig that was causing weird behavior
 * in configuration routines (config was not zeroed at start)
 * clean up genplot handling of stacks
 *
 * Revision 1.105  1996/06/17  03:22:15  jimz
 * use macroized thread delay
 *
 * Revision 1.104  1996/06/14  23:15:38  jimz
 * attempt to deal with thread GC problem
 *
 * Revision 1.103  1996/06/13  19:08:47  jimz
 * allow maxTraceRunTimeSec of 0 (unlimited)
 *
 * Revision 1.102  1996/06/12  04:41:26  jimz
 * tweaks to make genplot work with user-level driver
 * (mainly change stat collection)
 *
 * Revision 1.101  1996/06/12  03:31:29  jimz
 * add infrastructure for genplot (stats extraction)
 * cleanup simulator script handling
 *
 * Revision 1.100  1996/06/11  18:12:36  jimz
 * get rid of JOIN operations
 * use ThreadGroup stuff instead
 * fix some allocation/deallocation and sync bugs
 *
 * Revision 1.99  1996/06/11  10:57:57  jimz
 * switch to ReconDoneProc mechanism for reconDone flag for simulator
 * add rf_TestcodeInit
 *
 * Revision 1.98  1996/06/10  16:40:01  jimz
 * break user-level stuff out into lib+apps
 *
 * Revision 1.97  1996/06/09  02:36:46  jimz
 * lots of little crufty cleanup- fixup whitespace
 * issues, comment #ifdefs, improve typing in some
 * places (esp size-related)
 *
 * Revision 1.96  1996/06/07  21:33:04  jimz
 * begin using consistent types for sector numbers,
 * stripe numbers, row+col numbers, recon unit numbers
 *
 * Revision 1.95  1996/06/05  18:06:02  jimz
 * Major code cleanup. The Great Renaming is now done.
 * Better modularity. Better typing. Fixed a bunch of
 * synchronization bugs. Made a lot of global stuff
 * per-desc or per-array. Removed dead code.
 *
 * Revision 1.94  1996/06/03  23:28:26  jimz
 * more bugfixes
 * check in tree to sync for IPDS runs with current bugfixes
 * there still may be a problem with threads in the script test
 * getting I/Os stuck- not trivially reproducible (runs ~50 times
 * in a row without getting stuck)
 *
 * Revision 1.93  1996/06/02  17:31:48  jimz
 * Moved a lot of global stuff into array structure, where it belongs.
 * Fixed up paritylogging, pss modules in this manner. Some general
 * code cleanup. Removed lots of dead code, some dead files.
 *
 * Revision 1.92  1996/05/31  22:26:54  jimz
 * fix a lot of mapping problems, memory allocation problems
 * found some weird lock issues, fixed 'em
 * more code cleanup
 *
 * Revision 1.91  1996/05/30  23:22:16  jimz
 * bugfixes of serialization, timing problems
 * more cleanup
 *
 * Revision 1.90  1996/05/30  12:59:18  jimz
 * make etimer happier, more portable
 *
 * Revision 1.89  1996/05/30  11:29:41  jimz
 * Numerous bug fixes. Stripe lock release code disagreed with the taking code
 * about when stripes should be locked (I made it consistent: no parity, no lock)
 * There was a lot of extra serialization of I/Os which I've removed- a lot of
 * it was to calculate values for the cache code, which is no longer with us.
 * More types, function, macro cleanup. Added code to properly quiesce the array
 * on shutdown. Made a lot of stuff array-specific which was (bogusly) general
 * before. Fixed memory allocation, freeing bugs.
 *
 * Revision 1.88  1996/05/27  18:56:37  jimz
 * more code cleanup
 * better typing
 * compiles in all 3 environments
 *
 * Revision 1.87  1996/05/24  22:17:04  jimz
 * continue code + namespace cleanup
 * typed a bunch of flags
 *
 * Revision 1.86  1996/05/24  04:28:55  jimz
 * release cleanup ckpt
 *
 * Revision 1.85  1996/05/24  01:59:45  jimz
 * another checkpoint in code cleanup for release
 * time to sync kernel tree
 *
 * Revision 1.84  1996/05/23  21:46:35  jimz
 * checkpoint in code cleanup (release prep)
 * lots of types, function names have been fixed
 *
 * Revision 1.83  1996/05/23  00:33:23  jimz
 * code cleanup: move all debug decls to rf_options.c, all extern
 * debug decls to rf_options.h, all debug vars preceded by rf_
 *
 * Revision 1.82  1996/05/21  18:52:40  jimz
 * apparantly, something about RANDOM() doesn't like being invoked in a complex
 * line of code, so declare vars, and always just assign RANDOM() to them
 * and use the local var in the computation
 *
 * Revision 1.81  1996/05/21  07:46:36  jimz
 * add rf_test_running for debug purposes
 *
 * Revision 1.80  1996/05/20  19:31:26  jimz
 * straighten out use of printf_mutex
 * add UnbootRaidframe call
 *
 * Revision 1.79  1996/05/20  16:14:12  jimz
 * switch to rf_{mutex,cond}_{init,destroy}
 *
 * Revision 1.78  1996/05/18  19:51:34  jimz
 * major code cleanup- fix syntax, make some types consistent,
 * add prototypes, clean out dead code, et cetera
 *
 * Revision 1.77  1996/05/15  23:35:14  jimz
 * #ifdef cache stuff appropriately
 *
 * Revision 1.76  1996/05/09  17:17:10  jimz
 * commented potential leak in the looptest (sentinel claims
 * pthreads is leaking core)
 *
 * Revision 1.75  1996/05/06  22:56:58  wvcii
 * fixed memory leak in recon test (added call to ShutdownStripeLocks)
 *
 * Revision 1.74  1996/05/06  21:42:39  jimz
 * assign unique threadid to initial thread
 *
 * Revision 1.73  1996/05/06  19:10:36  jimz
 * get rid of extra argument to MakeLockTable()
 * plug core leaks
 *
 * Revision 1.72  1995/12/12  18:10:06  jimz
 * MIN -> RF_MIN, MAX -> RF_MAX, ASSERT -> RF_ASSERT
 * fix 80-column brain damage in comments
 *
 * Revision 1.71  1995/12/06  15:14:51  root
 * added copyright info
 *
 * Revision 1.70  1995/11/19  16:28:02  wvcii
 * moved disableParityVerify definition to rf_driver.c
 *
 * Revision 1.69  1995/11/17  19:47:53  amiri
 * added if (demoMode) around update_mode in faildisk
 *
 * Revision 1.68  1995/11/17  15:09:17  wvcii
 * added debug var disableParityVerify
 * used in RealLoopTest to disable parity verification
 *
 * Revision 1.67  1995/10/21  17:24:36  amiri
 * changed the point at which the mode is updated to degraded
 * mode, namely after the user hits return to fail the disk (not before)
 *
 * Revision 1.66  1995/10/18  19:29:56  amiri
 * added support for simulator reconstruction demo.
 * In ScripTest, added calls to meter_update_thread
 *
 * Revision 1.65  1995/10/10  23:22:13  amiri
 * added fflushes(stdin/stdout) before requesting
 * input in demo mode.
 *
 * Revision 1.64  1995/10/09  23:36:16  amiri
 * added support for more meters in recon. demo
 *
 * Revision 1.63  1995/10/06  17:31:16  arw
 * fixed numbytes computation which depended on a numsect that was
 * computed later.  (i put the bug in originall)
 *
 * Revision 1.62  1995/10/05  06:18:59  jimz
 * Changed DDEventRequest() to take additional arg, used by simulator
 * to cache diskid so queue length can be decremented on io complete
 * (this is a hack to get around the fact that the event mechanism
 * assumes it can dereference arbitrary handles on enqueued events)
 *
 * Revision 1.61  1995/10/04  18:30:39  wvcii
 * disabled prompt for dmeter position when demoMode == FALSE
 *
 * Revision 1.60  1995/10/04  07:58:17  jimz
 * nuke bogus printfs (mistakenly checked them in earlier)
 *
 * Revision 1.59  1995/10/04  07:24:57  jimz
 * code for bigstacks
 *
 * Revision 1.58  1995/10/04  03:49:59  wvcii
 * single access test does not verify parity for raid level 1
 *
 * Revision 1.57  1995/10/03  19:57:38  amiri
 * demo meter code tune-up.
 *
 * Revision 1.56  1995/10/02  13:08:36  wvcii
 * fixed misspellings in output, cleaned up output format
 *
 * Revision 1.55  1995/09/30  20:32:40  amiri
 * *** empty log message ***
 *
 * Revision 1.54  1995/09/28  16:01:09  amiri
 * added updates to user stats in script test.
 *
 * Revision 1.53  1995/09/27  17:25:52  arw
 * added INIT_RANDOM(1) for random access read/write test
 *
 * Revision 1.52  1995/09/14  15:21:54  amiri
 * Khalil:
 * Fixed Simulation bug that was generating very high
 * response times for more than a couple of threads.
 *
 * Revision 1.51  1995/09/06  19:29:31  wvcii
 * fixed divide by zero bugs in response time calculation (ScriptTest)
 *
 * Revision 1.50  95/08/24  19:25:36  rachad
 * Fixes to LSS GC in the simulater
 * 
 * Revision 1.49  1995/07/26  02:37:28  rachad
 * *** empty log message ***
 *
 * Revision 1.48  1995/07/25  20:15:37  rachad
 * *** empty log message ***
 *
 * Revision 1.47  1995/07/21  15:27:02  rachad
 * *** empty log message ***
 *
 * Revision 1.46  1995/07/20  16:10:24  rachad
 * *** empty log message ***
 *
 * Revision 1.45  1995/07/20  03:36:53  rachad
 * Added suport for cache warming
 *
 * Revision 1.44  1995/07/18  00:00:56  rachad
 * *** empty log message ***
 *
 * Revision 1.43  1995/07/17  23:44:37  rachad
 * *** empty log message ***
 *
 * Revision 1.42  1995/07/14  20:12:37  cfb
 * *** empty log message ***
 *
 * Revision 1.41  1995/07/13  17:53:45  rachad
 * user simulator process will now be enqued as a call back.
 *
 * Revision 1.40  1995/07/10  20:41:13  rachad
 * *** empty log message ***
 *
 * Revision 1.39  1995/07/10  19:06:28  rachad
 * *** empty log message ***
 *
 * Revision 1.38  1995/07/08  21:38:53  rachad
 * Added support for interactive traces
 * in the simulator
 *
 * Revision 1.37  1995/07/06  13:07:22  robby
 * added fflush stderr and stdout
 *
 * Revision 1.36  1995/06/23  13:49:53  robby
 * forgot one spot when updating to prototypes in rf_layout.h
 *
 * Revision 1.35  1995/06/07  16:27:41  wvcii
 * LayoutTest only validates parity map when numParityCol > 0
 *
 * Revision 1.34  95/06/07  01:37:23  rachad
 * Cleanned up simulator user interface
 * 
 * Revision 1.33  1995/06/02  01:36:18  rachad
 * *** empty log message ***
 *
 * Revision 1.32  1995/06/02  01:24:20  rachad
 * Changed script interface,
 * ConvertActionToAccess will now compute seekLoc in sectors
 * and size in bytes -> traces with 1/2 k access can be used
 *
 * Revision 1.31  1995/05/27  21:47:12  wvcii
 * disabled loop test parity verification for parity logging configuration
 *
 * Revision 1.30  95/05/15  12:25:35  holland
 * bug fix in test code: no stripe locks were getting acquired in RAID0 mode
 * 
 * Revision 1.29  1995/05/10  18:54:12  holland
 * bug fixes related to deadlock problem at time of disk failure
 * eliminated read-op-write code
 * beefed up parity checking in loop test
 * various small changes & new ASSERTs
 *
 * Revision 1.28  1995/05/02  22:48:06  holland
 * added copyback code
 *
 * Revision 1.27  1995/05/01  13:28:00  holland
 * parity range locks, locking disk requests, recon+parityscan in kernel, etc.
 *
 * Revision 1.26  1995/04/24  13:25:51  holland