4 Here are three examples of what the LDdriver can do:  E The first one is to create a big disk, consisting of 8 logical disks, J forming 4 shadowsets, combined in 2 stripesets, combined into 1 volumeset.A In the kit is a file BIGDISK.COM which allows one to create this.   D   Volset             STA           DSA           LDA           LabelE --------------------------------------------------------------------- 5                                                  LDA1 B                                    DSA10                       ST05                                                  LDA2                       STA205                                                  LDA3 B                                    DSA11                       ST15                                                  LDA4    VOLSET5                                                  LDA5 B                                    DSA12                       ST25                                                  LDA6                       STA215                                                  LDA7 B                                    DSA13                       ST35                                                  LDA8     G The second example shows how to put a device into mountverification and  to track I/O requests.> In the kit is a file MOUNTVER.COM which allows one to do this.   $ LD CREATE TMP  $ LD CONNECT/LOG TMP LDA1 W %LD-I-CONNECTED, Device THEBUG$LDA1: is connected to $8$DIA0:[USERS.VDBURG.LD]TMP.DSK;1  $ INIT LDA1: TEST  $ MOUNT/SYSTEM LDA1: TEST @ %MOUNT-I-MOUNTED, TEST         mounted on _THEBUG$LDA1: (THEBUG)) $ COPY/ALLOC=10 NL: LDA1:[000000]JUNK.DAT $ $ SET FILE/END LDA1:[000000]JUNK.DAT> $ LD WATCH LDA1 5/FILE=LDA1:[000000]JUNK.DAT/ACTION=ERROR=%X2C9 $ LD WATCH LDA1 5/FILE=LDA1:[000000]JUNK.DAT/ACTION=OPCOM   $ LD WATCH LDA1 1/ACTION=SUSPEND $ LD SHOW/WATCH LDA1: ; Index LBN     Action     Function         Error return code D --------------------------------------------------------------------,              THEBUG$LDA1:[000000]JUNK.DAT;1:  1        5  Opcom     READPBLK ,              THEBUG$LDA1:[000000]JUNK.DAT;1:8  2        5  Error     READPBLK             002C (ABORT)  3        1  Suspend   READPBLK 4 $ DUMP LDA1:[000000]JUNK.DAT/BLOCK=(START=5,COUNT=1)8 %%%%%%%%%%%  OPCOM  28-FEB-1994 14:38:17.90  %%%%%%%%%%%" Message from user VDBURG on THEBUG3 ***** LDdriver detected VBN watchpoint access *****  PID:      2020006A Image:    DUMP Device:   THEBUG$LDA1: Function: 000C VBN:   	  5  File id:  (11,1,0)  6 %DUMP-E-READERR, error reading LDA1:[000000]JUNK.DAT;1 -SYSTEM-F-ABORT, abort; $ SPAWN/NOWAIT/INPUT=NL: DUMP/BLOCK=(START=1,COUNT=1) LDA1: ( %DCL-S-SPAWNED, process VDBURG_1 spawned $ WAIT 0:0:1 $ LD SHOW/WATCH LDA1: ; Index LBN     Action     Function         Error return code D --------------------------------------------------------------------,              THEBUG$LDA1:[000000]JUNK.DAT;1:  1        5  Opcom     READPBLK ,              THEBUG$LDA1:[000000]JUNK.DAT;1:8  2        5  Error     READPBLK             002C (ABORT)  3        1  Suspend   READPBLK (              Suspended process: 202000E7 $ LD WATCH/RESUME LDA1:   / Dump of device LDA1: on 28-FEB-1994 14:38:20.47 4 	Logical block number 1 (00000001), 512 (0200) bytes<  00010201 00000018 00000004 00000001 ................ 000000<  00000080 00000007 00050004 00030002 ................ 000010<  00400040 00000000 00000000 000A0001 ............@.@. 000020 	.    2 The third example shows how to trace I/O requests.   $ LD CREATE TEST $ LD CONNECT TEST LDA1 $ INIT LDA1 TEST $ LD TRACE LDA1  $ MOUNT/SYSTEM LDA1 TEST< %MOUNT-I-MOUNTED, TEST         mounted on _$8$LDA1: (THEBUG)) $ COPY/ALLOC=10 NL: LDA1:[000000]JUNK.DAT  $ DISMOUNT LDA1  $ LD SHOW/TRACE LDA1&          I/O trace for device $8$LDA1:,      1-NOV-1994 11:14:49.62 on node THEBUG::  > Start Time  Elaps   Pid        Lbn     Bytes  Iosb    Function> --------------------------------------------------------------E 11:14:16.54 00.00 6020006A          0      0 NORMAL  PACKACK|INHERLOG = 11:14:16.54 00.03 6020006A          1    512 NORMAL  READPBLK = 11:14:16.58 00.01 6020006A          1    512 NORMAL  READPBLK = 11:14:16.59 00.00 6020006A          8    512 NORMAL  READPBLK = 11:14:16.60 00.02 6020006A          9    512 NORMAL  READPBLK = 11:14:16.62 00.02 6020006A          5    512 NORMAL  READPBLK > 11:14:16.65 00.01 6020006A          5    512 NORMAL  WRITEPBLK= 11:14:16.66 00.01 6020006A          7    512 NORMAL  READPBLK = 11:14:16.67 00.00 6020006A          6    512 NORMAL  READPBLK = 11:14:16.70 00.01 6020006A         11    512 NORMAL  READPBLK = 11:14:16.71 00.01 6020006A          3    512 NORMAL  READPBLK = 11:14:16.74 00.00 6020006A         17    512 NORMAL  READPBLK > 11:14:16.75 00.02 6020006A         30    512 NORMAL  DSE|ERASE> 11:14:16.78 00.02 6020006A         17    512 NORMAL  WRITEPBLK= 11:14:16.82 00.00 6020006A         25    512 NORMAL  READPBLK > 11:14:16.84 00.01 6020006A         17    512 NORMAL  WRITEPBLK> 11:14:16.88 00.02 6020006A         17    512 NORMAL  WRITEPBLK> 11:14:16.90 00.02 6020006A         25    512 NORMAL  WRITEPBLK= 11:14:30.17 00.02 6020006A          7    512 NORMAL  READPBLK = 11:14:30.20 00.00 6020006A          8    512 NORMAL  READPBLK > 11:14:30.22 00.02 6020006A         18   3072 NORMAL  DSE|ERASE> 11:14:30.24 00.02 6020006A          8    512 NORMAL  WRITEPBLK> 11:14:30.26 00.01 6020006A         24    512 NORMAL  WRITEPBLK> 11:14:30.27 00.02 6020006A          7    512 NORMAL  WRITEPBLK= 11:14:30.30 00.02 6020006A         18    512 NORMAL  READPBLK = 11:14:30.33 00.01 6020006A          6    512 NORMAL  READPBLK > 11:14:30.37 00.02 6020006A          6    512 NORMAL  WRITEPBLK> 11:14:30.40 00.01 6020006A          3    512 NORMAL  WRITEPBLK> 11:14:30.41 00.01 6020006A         18    512 NORMAL  WRITEPBLK> 11:14:30.55 00.02 6020006A         18    512 NORMAL  WRITEPBLK> 11:14:47.23 00.03 6020006A          7    512 NORMAL  WRITEPBLK> 11:14:47.26 00.01 6020006A          6    512 NORMAL  WRITEPBLK= 11:14:47.28 00.00 6020006A          5    512 NORMAL  READPBLK > 11:14:47.29 00.02 6020006A          5    512 NORMAL  WRITEPBLK; 11:14:47.32 00.00 6020006A          0      0 NORMAL  UNLOAD 