3 /FDT

	Allows FDT routine access to be traced. This is a form of
	preprocessing which every I/O request goes through. This qualifier
	causes usage of additional entries in the tracebuffer for almost
	every I/O request, hence it is made optional.

	This qualifier will only work on Alpha.

3 /RESET

	When this qualifier is specified the tracebuffer will be reset.
	All data currently in the buffer will be lost.

3 /SIZE

 /SIZE[=number_of_entries]

	Specifies the size of the tracebuffer. The default size
	is 512 entries.

3 /STOP

	This qualifier can be used to stop another process which has
	issued a SHOW/TRACE/CONTINUOUS command. The devicename must
	be specified (unless /ALL was given). If the trace was started
	by a process in the same UIC group, GROUP privilege is needed.
	If the process belongs to another UIC group, WORLD privilege
	is needed.

2 NOTRACE

  LD NOTRACE LDan:

	This command deallocates the tracebuffer. All data currently
	available in the buffer will be lost.

2 PROTECT

  LD PROTECT LDan:

	This command will write-protect the specified device.

3 /PERMANENT

 /PERMANENT

	Save writelock status in the containerfile so that it may be
	used during CONNECT (like emulating a 'hardware write protect'
	button).

2 SWITCH

  LM SWITCH filespec LMan:

	This command allows volume switching for backup. The existing virtual
	tapeunit is re-used with a the new container file. The old file will
	be disconencted.

	This command accepts the same switches as the CONNECT command.

2 UNLOAD

  LM UNLOAD LMan:

	This command will unload the specified file from the LM device. This
	is different from LM DISCONNECT in that the unit will be kept available
	for subsequent reuse with the LM LOAD command.

3 /LOG

 /LOG
 /NOLOG (default)

	Shows the status after the device has been unloaded.

3 /TRUNCATE

	This qualifier will truncate the container file to the highest written
	block. This can be used to trim excess blocks which may be left over
	from an extend operation.

2 WATCH

  LD WATCH LDan: lbn [,lbn...]

	This command will set a watchpoint on a virtual or logical
	blocknumber on the specified device. The lbn is ignored on
	I/O functions which don't need an lbn (IO$_PACKACK for
	example).

	This makes it possible to let the driver take some actions
	dependant of which lbn was accessed with a specified function-
	code.

3 /FUNCTION

  /FUNCTION[=Keyword]

	This qualifier specifies for which I/O function the watchpoint is set.

	An optional keyword may be given:

	FUNCTION=ALL		The watchpoint is set for all I/O functions

	FUNCTION=READ		The watchpoint is set for IO$_READPBLK

	FUNCTION=WRITE		The watchpoint is set for IO$_WRITEPBLK

	FUNCTION=CODE=number	The watchpoint is set for the specified
				I/O function code

	The default is /FUNCTION=READ

3 /ACTION

  /ACTION[=Keyword]

	This qualifier specifies the action to be performed when a valid
	watchpoint is encountered. To be able to set a watchpoint one must
	have either CMKRNL privilege, or be the owner of the device.

	A watchpoint may have one action only: CRASH, ERROR or SUSPEND. An
	exception is OPCOM, which may be specified in addition to any other
	action for a specific watchpoint.

	An optional keyword may be given:

	ACTION=CRASH		This action will crash the system when a
				matching lbn and function are found. Usage
				of this keyword needs CMKRNL privilege.
				The bugcheck type will be RSVD_LP.

	ACTION=ERROR[=code]	This action will return a user-specified
				errorcode when a matching lbn and function
				are found. When the code is not specified
				SS$_BUGCHECK will be returned.

	ACTION=SUSPEND		This action will suspend the thread when a
				matching lbn and function are found. This
				enables one to look at the system with SDA
				for further investigation. LD SHOW/WATCH will
				show all processes waiting for a specific
				watchpoint, while LD WATCH/RESUME will resume
				the thread.

	ACTION=OPCOM		This action will display an OPCOM message when
				a matching lbn and function are found. The
				message includes the process-id and the
				imagename doing the request, the devicename,
				the functioncode and the lbn. If the watchpoint
				was a virtual one (/FILE specified) then it
				will show the vbn as well as the file-id of
				the corresponding file.

	The default is /ACTION=ERROR=676 (SS$_BUGCHECK)

3 /FILE

  /FILE=filespec

	This qualifier will enable a virtual watchpoint on the specified
	file. The parameter(s) will then be virtual blocknumbers of the
	file.

3 /RESUME

  /RESUME

	This qualifier resumes a suspended watchpoint. The parameter is the
	watchpoint to resume. An alternate way to resume a watchpoint is
	by /INDEX. If no parameter is specified then all suspended watchpoints
	will be resumed.

3 /INDEX

  /INDEX=n

	This qualifier enables watchpoint resume by index. The parameter
	is the watchpoint number to resume.

2 VERSION

	This command will show the current version of the LD utility and
	the driver.

2 Examples

	A couple of examples of some of LDdriver's capabilities.

3 Version

	Show the version:

	$ ld version
	%LD-I-VERSION, LD version V9.0, module X-9 built on Oct 28 2006 15:19:29
	-LD-I-DRIVERVERSION, Driver version: 28-OCT-2006 15:19:59.26 (MON version)
	-LD-I-SYSINFO, Node: THEBAT, Hardware: hp AlphaServer DS20L 833 MHz, VMS version: V8.3

3 WatchPoint

	An example of watchpoint usage:

	$ LD CREATE TMP
	$ LD CONNECT/LOG TMP LDA1
	%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=%X2C
	$ 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
	--------------------------------------------------------------------
	             THEBUG$LDA1:[000000]JUNK.DAT;1:
	 1        5  Opcom     READPBLK
	             THEBUG$LDA1:[000000]JUNK.DAT;1:
	 2        5  Error     READPBLK             002C (ABORT)
	 3        1  Suspend   READPBLK
	$ DUMP LDA1:[000000]JUNK.DAT/BLOCK=(START=5,COUNT=1)
	%%%%%%%%%%%  OPCOM  28-FEB-1994 14:38:17.90  %%%%%%%%%%%
	Message from user VDBURG on THEBUG
	***** LDdriver detected VBN watchpoint access *****
	PID:      2020006A
	Image:    DUMP
	Device:   THEBUG$LDA1:
	Function: 000C
	VBN:   	  5
	File id:  (11,1,0)

	%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
	--------------------------------------------------------------------
	             THEBUG$LDA1:[000000]JUNK.DAT;1:
	 1        5  Opcom     READPBLK
	             THEBUG$LDA1:[000000]JUNK.DAT;1:
	 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

	Logical block number 1 (00000001), 512 (0200) bytes

	 00010201 00000018 00000004 00000001 ................ 000000
	 00000080 00000007 00050004 00030002 ................ 000010
	 00400040 00000000 00000000 000A0001 ............@.@. 000020
	.
	.
	.

3 MountVerification

	An example of how to put a disk into Mountverification:

	$ ld create/nobackup tempdisk.dsk
	$ ld connect/log/symbol tempdisk.dsk
	%LD-I-CONNECTED, Connected $7$LDA7: to $7$DKC0:[LD]TEMPDISK.DSK;1
	$ init/nohigh/system lda7: test
	$ mount lda7: test
	%MOUNT-I-MOUNTED, TEST mounted on _$7$LDA7: (UTRI64)
	$ ld trace lda7:
	$ ld watch lda7: 1/action=error=%x84/function=code=%x0808
	$ ld watch lda7: 10/action=error=%x84/function=read
	$ ld watch lda7: 10/action=opcom/function=read
	$ ld show/watch lda7:
	Index LBN     Action     Function         Error return code
	--------------------------------------------------------------------
	 1           Error     PACKACK|INHERLOG     0084 (DEVOFFLINE)
	 2       10  Opcom     READPBLK
	 3       10  Error     READPBLK             0084 (DEVOFFLINE)
	$ reply/enable/temp
	%%%%%%%%%%%  OPCOM  20-DEC-2004 22:24:33.86  %%%%%%%%%%%
	Operator _UTRI64$VTA3: has been enabled, username VDBURG

	%%%%%%%%%%%  OPCOM  20-DEC-2004 22:24:33.86  %%%%%%%%%%%
	Operator status for operator _UTRI64$VTA3:
	CENTRAL, PRINTER, TAPES, DISKS, DEVICES, CARDS, NETWORK, CLUSTER, SECURITY,
	LICENSE, OPER1, OPER2, OPER3, OPER4, OPER5, OPER6, OPER7, OPER8, OPER9, OPER10,
	OPER11, OPER12

	$ spawn/nowait/input=nl: dump lda7:/block=(start=10,count=1)
	%DCL-S-SPAWNED, process VDBURG_121 spawned
	$ inquire dummy "Press return to continue
	Press return to continue:
	%%%%%%%%%%%  OPCOM  20-DEC-2004 22:24:33.90  %%%%%%%%%%%
	Device $7$LDA7: (UTRI64) is offline.
	Mount verification is in progress.

	Press return to continue:
	%%%%%%%%%%%  OPCOM  20-DEC-2004 22:24:33.90  %%%%%%%%%%%
	Message from user VDBURG on UTRI64
	***** LDdriver detected LBN watchpoint access *****
	PID:      5F000428
	Image:    DCL
	Device:   $7$LDA7: (UTRI64)
	Function: 000C
	LBN:      10

	Press return to continue:

	$ ld nowatch lda7:
	$ ld show/trace lda7:
	         I/O trace for device $7$LDA7:
	    20-DEC-2004 22:24:4.66 on node UTRI64::

	Start Time  Elaps   Pid        Lbn     Bytes  Iosb    Function
	-------------------------------------------------------------
	22:24:33.90 00.00 5F000428         10    512 DEVOFFLINE READPBLK
	22:24:33.90 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:34.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:35.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:36.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:37.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:38.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:39.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	22:24:40.29 00.00 00000000          0      0 DEVOFFLINE PACKACK|INHERLOG
	$ reply/disable
	%%%%%%%%%%%  OPCOM  20-DEC-204 22:24:40.68  %%%%%%%%%%%
	Operator _UTRI64$VTA3: has been disabled, username VDBURG

	$ wait 0:0:1

	Dump of device LDA7: on 20-DEC-2004 22:24:33.90

	Logical block number 10 (0000000A), 512 (0200) bytes

	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000000
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000020
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000040
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000060
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000080
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 0000A0
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 0000C0
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 0000E0
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000100
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000120
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000140
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000160
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 000180
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 0001A0
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 0001C0
	 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 ................................ 0001E0
	$ dism lda7:
	$ ld disc lda7:
	$ delete/nolog/noconf tempdisk.dsk;

3 BigDisk

	How to create a big disk:

	$! create a bigggg disk
	$!
	$!  Volset             DPA           DSA           LDA           Label
	$!---------------------------------------------------------------------
	$!                                                 LDA1
	$!                                   DSA10                       ST0000000000
	$!                                                 LDA2
	$!                     DPA20
	$!                                                 LDA3
	$!                                   DSA11                       ST0000000001
	$!                                                 LDA4
	$!  BIGDISK
	$!                                                 LDA5
	$!                                   DSA12                       ST1000000000
	$!                                                 LDA6
	$!                     DPA21
	$!                                                 LDA7
	$!                                   DSA13                       ST1000000001
	$!                                                 LDA8
	$!
	$ size = 1000000
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld1.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD1.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld2.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD2.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld3.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD3.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld4.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD4.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld5.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD5.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld6.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD6.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld7.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD7.DSK;2 created
	$ ld create/log/nobackup/size=1000000 $7$dkc0:[ld]ld8.dsk
	%LD-I-CREATED, File $7$DKC0:[LD]LD8.DSK;2 created
	$ ld conn/log $7$dkc0:[ld]ld1.dsk lda1
	%LD-I-CONNECTED, Connected $7$LDA1: to $7$DKC0:[LD]LD1.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld2.dsk lda2
	%LD-I-CONNECTED, Connected $7$LDA2: to $7$DKC0:[LD]LD2.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld3.dsk lda3
	%LD-I-CONNECTED, Connected $7$LDA3: to $7$DKC0:[LD]LD3.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld4.dsk lda4
	%LD-I-CONNECTED, Connected $7$LDA4: to $7$DKC0:[LD]LD4.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld5.dsk lda5
	%LD-I-CONNECTED, Connected $7$LDA5: to $7$DKC0:[LD]LD5.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld6.dsk lda6
	%LD-I-CONNECTED, Connected $7$LDA6: to $7$DKC0:[LD]LD6.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld7.dsk lda7
	%LD-I-CONNECTED, Connected $7$LDA7: to $7$DKC0:[LD]LD7.DSK;1
	$ ld conn/log $7$dkc0:[ld]ld8.dsk lda8
	%LD-I-CONNECTED, Connected $7$LDA8: to $7$DKC0:[LD]LD8.DSK;1
	$ ld trace lda1
	$ ld trace lda2
	$ ld trace lda3
	$ ld trace lda4
	$ ld trace lda5
	$ ld trace lda6
	$ ld trace lda7
	$ ld trace lda8
	$ ld show/all
	%LD-I-CONNECTED, Connected _$7$LDA1: to $7$DKC0:[LD]LD1.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA2: to $7$DKC0:[LD]LD2.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA3: to $7$DKC0:[LD]LD3.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA4: to $7$DKC0:[LD]LD4.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA5: to $7$DKC0:[LD]LD5.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA6: to $7$DKC0:[LD]LD6.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA7: to $7$DKC0:[LD]LD7.DSK;1
	%LD-I-CONNECTED, Connected _$7$LDA8: to $7$DKC0:[LD]LD8.DSK;1
	$ raid init/noconfirm/raid_level=0 st0 lda1,lda3
	%RAID-I-PRTCREATED, Array partition 1 created: 1995112 blocks
	$ raid init/noconfirm/raid_level=0 st1 lda5,lda7
	%RAID-I-PRTCREATED, Array partition 1 created: 1995112 blocks
	$ raid bind st0 lda1,lda3/shadow/use_shadow=(dsa10,dsa11) dpa20
	%RAID-I-ISBOUND, unit _DSA10: is bound as a member of array ST0
	%RAID-I-INUSE, unit _$7$LDA1: is a shadow set member of _DSA10:
	%RAID-I-ISBOUND, unit _DSA11: is bound as a member of array ST0
	%RAID-I-INUSE, unit _$7$LDA3: is a shadow set member of _DSA11:
	%RAID-I-VUCREATE, virtual unit DPA0020: was created for partition 1 on ST0
	$ raid bind st1 lda5,lda7/shadow/use_shadow=(dsa12,dsa13) dpa21
	%RAID-I-ISBOUND, unit _DSA12: is bound as a member of array ST1
	%RAID-I-INUSE, unit _$7$LDA5: is a shadow set member of _DSA12:
	%RAID-I-ISBOUND, unit _DSA13: is bound as a member of array ST1
	%RAID-I-INUSE, unit _$7$LDA7: is a shadow set member of _DSA13:
	%RAID-I-VUCREATE, virtual unit DPA0021: was created for partition 1 on ST1
	$ mount/system dsa10:/shadow=_$7$LDA2: st0000000000
	%MOUNT-I-MOUNTED, ST0000000000 mounted on _DSA10:
	%MOUNT-I-SHDWMEMCOPY, _$7$LDA2: (UTRA41) added to the shadow set with a copy operation
	%MOUNT-I-ISAMBR, _$7$LDA1: (UTRA41) is a member of the shadow set
	$ mount/system dsa11:/shadow=_$7$LDA4: st0000000001
	%MOUNT-I-MOUNTED, ST0000000001 mounted on _DSA11:
	%MOUNT-I-SHDWMEMCOPY, _$7$LDA4: (UTRA41) added to the shadow set with a copy operation
	%MOUNT-I-ISAMBR, _$7$LDA3: (UTRA41) is a member of the shadow set
	$ mount/system dsa12:/shadow=_$7$LDA6: st1000000000
	%MOUNT-I-MOUNTED, ST1000000000 mounted on _DSA12:
	%MOUNT-I-SHDWMEMCOPY, _$7$LDA6: (UTRA41) added to the shadow set with a copy operation
	%MOUNT-I-ISAMBR, _$7$LDA5: (UTRA41) is a member of the shadow set
	$ mount/system dsa13:/shadow=_$7$LDA8: st1000000001
	%MOUNT-I-MOUNTED, ST1000000001 mounted on _DSA13:
	%MOUNT-I-SHDWMEMCOPY, _$7$LDA8: (UTRA41) added to the shadow set with a copy operation
	%MOUNT-I-ISAMBR, _$7$LDA7: (UTRA41) is a member of the shadow set
	$ init/nohig dpa20: vset0
	$ init/nohig dpa21: vset1
	$ mount/system/bind=bigdisk dpa20,dpa21: vset0,vset1 bigdisk
	%MOUNT-I-MOUNTED, VSET0 mounted on _DPA20: (UTRA41)
	%MOUNT-I-MOUNTED, VSET1 mounted on _DPA21: (UTRA41)
	$ ld show/trace/status lda1
	%LD-I-STATUS, Device $7$LDA1: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda2
	%LD-I-STATUS, Device $7$LDA2: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda3
	%LD-I-STATUS, Device $7$LDA3: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda4
	%LD-I-STATUS, Device $7$LDA4: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda5
	%LD-I-STATUS, Device $7$LDA5: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda6
	%LD-I-STATUS, Device $7$LDA6: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda7
	%LD-I-STATUS, Device $7$LDA7: has a tracebuffer of 512 entries (512 valid records)
	$ ld show/trace/status lda8
	%LD-I-STATUS, Device $7$LDA8: has a tracebuffer of 512 entries (512 valid records)
	$ sh dev ld

	Device                  Device           Error    Volume         Free  Trans Mnt
	 Name                   Status           Count     Label        Blocks Count Cnt
	$7$LDA0:      (UTRA41)  Online               0
	$7$LDA1:      (UTRA41)  ShadowSetMember      0  (member of DSA10:)
	$7$LDA2:      (UTRA41)  ShadowCopying        0  (copy trgt DSA10:   6% copied)
	$7$LDA3:      (UTRA41)  ShadowSetMember      0  (member of DSA11:)
	$7$LDA4:      (UTRA41)  ShadowCopying        0  (copy trgt DSA11:   4% copied)
	$7$LDA5:      (UTRA41)  ShadowSetMember      0  (member of DSA12:)
	$7$LDA6:      (UTRA41)  ShadowCopying        0  (copy trgt DSA12:   3% copied)
	$7$LDA7:      (UTRA41)  ShadowSetMember      0  (member of DSA13:)
	$7$LDA8:      (UTRA41)  ShadowCopying        0  (copy trgt DSA13:   1% copied)
	$ sh dev dsa10

	Device                  Device           Error    Volume         Free  Trans Mnt
	 Name                   Status           Count     Label        Blocks Count Cnt
	DSA10:                  Mounted              0  ST0000000000         0     2   1
	$7$LDA1:      (UTRA41)  ShadowSetMember      0  (member of DSA10:)
	$7$LDA2:      (UTRA41)  ShadowCopying        0  (copy trgt DSA10:   6% copied)
	$ sh dev dsa11

	Device                  Device           Error    Volume         Free  Trans Mnt
	 Name                   Status           Count     Label        Blocks Count Cnt
	DSA11:                  Mounted              0  ST0000000001         0     2   1
	$7$LDA3:      (UTRA41)  ShadowSetMember      0  (member of DSA11:)
	$7$LDA4:      (UTRA41)  ShadowCopying        0  (copy trgt DSA11:   4% copied)
	$ sh dev dsa12

	Device                  Device           Error    Volume         Free  Trans Mnt
	 Name                   Status           Count     Label        Blocks Count Cnt
	DSA12:                  Mounted              0  ST1000000000         0     2   1
	$7$LDA5:      (UTRA41)  ShadowSetMember      0  (member of DSA12:)
	$7$LDA6:      (UTRA41)  ShadowCopying        0  (copy trgt DSA12:   3% copied)
	$ sh dev dsa13

	Device                  Device           Error    Volume         Free  Trans Mnt
	 Name                   Status           Count     Label        Blocks Count Cnt
	DSA13:                  Mounted              0  ST1000000001         0     2   1
	$7$LDA7:      (UTRA41)  ShadowSetMember      0  (member of DSA13:)
	$7$LDA8:      (UTRA41)  ShadowCopying        0  (copy trgt DSA13:   1% copied)
	$ sh dev bigdisk

	Device                  Device           Error    Volume         Free  Trans Mnt
	 Name                   Status           Count     Label        Blocks Count Cnt
	DPA20:        (UTRA41)  Mounted              0  VSET0          1994928     1   1
	DPA21:        (UTRA41)  Mounted              0  VSET1          1994944     1   1

3 IoTrace

	$ ld create trace.dsk
	$ ld connect trace lda1
	$ ld trace lda1
	$ init/nohigh/sys lda1 trace
	$ mount/sys lda1 trace
	%MOUNT-I-MOUNTED, TRACE mounted on _$3$LDA1: (THEBAT)
	$ ld show/trace lda1
	         I/O trace for device $3$LDA1:
	    28-OCT-2006 16:05:18.59 on node THEBAT

	End Time           Elaps    Pid       Lbn     Bytes  Iosb    Function
	---------------------------------------------------------------------
	16:05:10.771403 00.007325 20C00430          5    512 NORMAL  READPBLK|EXFUNC
	16:05:10.779412 00.007851 20C00430          5    512 NORMAL  WRITEPBLK|EXFUNC|DATACHECK
	16:05:10.779547 00.000000 20C00430          0      0 NORMAL  UNLOAD
	16:05:12.603531 00.000000 20C00430          0      0 NORMAL  PACKACK
	16:05:12.603611 00.000000 20C00430          0      0 NORMAL  PACKACK
	16:05:12.603677 00.000000 20C00430          0      0 NORMAL  PACKACK|INHERLOG
	16:05:12.603738 00.000000 20C00430          0      0 NORMAL  PACKACK
	16:05:12.609520 00.005659 20C00430          1    512 NORMAL  READPBLK
	16:05:12.613568 00.003897 20C00430          2    512 NORMAL  WRITEPBLK
	16:05:12.617556 00.003860 20C00430          2    512 NORMAL  WRITEPBLK
	16:05:12.625511 00.007764 20C00430          0    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.634013 00.008312 20C00430        511    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.641501 00.007352 20C00430          1    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.649989 00.008359 20C00430        510    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.657492 00.007372 20C00430          2    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.665966 00.008345 20C00430        509    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.673485 00.007391 20C00430          3    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.681940 00.008326 20C00430        508    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.689473 00.007403 20C00430          4    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.697914 00.008315 20C00430        507    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.705465 00.007424 20C00430          5    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.713893 00.008302 20C00430        506    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.721462 00.007438 20C00430          6    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.729867 00.008270 20C00430        505    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.737453 00.007457 20C00430          7    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.745845 00.008263 20C00430        504    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.753440 00.007465 20C00430          8    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.761821 00.008252 20C00430        503    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.769434 00.007482 20C00430          9    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.777799 00.008237 20C00430        502    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.785427 00.007485 20C00430         10    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.793771 00.008216 20C00430        501    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.801411 00.007511 20C00430         11    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.809750 00.008207 20C00430        500    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.817404 00.007528 20C00430         12    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.825724 00.008193 20C00430        499    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.833398 00.007527 20C00430         13    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.841704 00.008176 20C00430        498    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.849387 00.007553 20C00430         14    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.857677 00.008156 20C00430        497    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.865378 00.007571 20C00430         15    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.873652 00.008138 20C00430        496    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.881372 00.007589 20C00430         16    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.889629 00.008123 20C00430        495    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.897363 00.007602 20C00430         17    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.905603 00.008111 20C00430        494    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.913356 00.007621 20C00430         18    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.921583 00.008098 20C00430        493    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.929345 00.007629 20C00430         19    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.937557 00.008076 20C00430        492    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.945340 00.007658 20C00430         20    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.953533 00.008058 20C00430        491    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.961331 00.007649 20C00430         21    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.969520 00.008054 20C00430        490    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.977322 00.007668 20C00430         22    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.985489 00.008034 20C00430        489    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:12.993314 00.007691 20C00430         23    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.001465 00.008018 20C00430        488    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.009310 00.007702 20C00430         24    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.017442 00.007997 20C00430        487    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.025297 00.007725 20C00430         25    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.033419 00.007989 20C00430        486    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.041288 00.007729 20C00430         26    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.049392 00.007973 20C00430        485    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.057280 00.007761 20C00430         27    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.065370 00.007962 20C00430        484    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.073270 00.007772 20C00430         28    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.081344 00.007941 20C00430        483    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.089262 00.007791 20C00430         29    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.097321 00.007929 20C00430        482    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.105255 00.007806 20C00430         30    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.113300 00.007917 20C00430        481    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.121246 00.007817 20C00430         31    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.129274 00.007901 20C00430        480    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.137238 00.007836 20C00430         32    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.145248 00.007881 20C00430        479    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.153014 00.007614 20C00430          5    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.161014 00.007576 20C00430          6    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.168961 00.007797 20C00430          0    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.176953 00.007862 20C00430          0    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.184949 00.007855 20C00430          1    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.192948 00.007863 20C00430          2    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.200981 00.007891 20C00430          7    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.209010 00.007896 20C00430         12    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.217019 00.007880 20C00430         14    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.225002 00.007853 20C00430         13    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.233011 00.007870 20C00430         15    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.241008 00.007863 20C00430         16    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.248941 00.007803 20C00430          8    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.257053 00.007980 20C00430         24    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.264940 00.007757 20C00430         10    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.272923 00.007847 20C00430          9    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.280976 00.007895 20C00430         17    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.288922 00.007812 20C00430         11    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.296852 00.007781 20C00430          3    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.305016 00.008038 20C00430         25    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.308936 00.003785 20C00430         17    512 NORMAL  READPBLK
	16:05:13.316945 00.007880 20C00430         17    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.320823 00.003731 20C00430          5    512 NORMAL  READPBLK
	16:05:13.328840 00.007895 20C00430          5    512 NORMAL  WRITEPBLK|DATACHECK
	16:05:13.328957 00.000000 20C00430          0      0 NORMAL  AVAILABLE
	16:05:14.897422 00.000000 20C00430          0      0 NORMAL  PACKACK|INHERLOG
	16:05:14.903213 00.005642 20C00430          1    512 NORMAL  READPBLK
	16:05:14.903494 00.000094 20C00430          2    512 NORMAL  READPBLK
	16:05:14.903801 00.000182 20C00430          8    512 NORMAL  READPBLK
	16:05:14.904091 00.000155 20C00430          9    512 NORMAL  READPBLK
	16:05:14.904387 00.000175 20C00430          5    512 NORMAL  READPBLK
	16:05:14.907277 00.002771 20C00430          5    512 NORMAL  WRITEPBLK
	16:05:14.911272 00.003508 20C00430          5    512 NORMAL  WRITEPBLK
	16:05:14.911554 00.000164 20C00430          6    512 NORMAL  READPBLK
	16:05:14.911847 00.000162 20C00430          7    512 NORMAL  READPBLK
	16:05:14.912981 00.000164 20C00430         11    512 NORMAL  READPBLK|EXFUNC
	16:05:14.915202 00.002046 20C00430          3    512 NORMAL  READPBLK|EXFUNC
	16:05:14.915481 00.000000 20C00430          0      0 NORMAL  PACKACK|BYPASS_VALID_CHK
	16:05:14.915772 00.000168 20C00430          5    512 NORMAL  READPBLK|EXFUNC
	16:05:14.916130 00.000156 20C00430         17    512 NORMAL  READPBLK|EXFUNC
	16:05:14.923226 00.006746 20C00430          3    512 NORMAL  WRITEPBLK|EXFUNC|DATACHECK
	16:05:14.931319 00.007929 20C00430         17    512 NORMAL  WRITEPBLK|EXFUNC|DATACHECK
	16:05:14.931806 00.000173 20C00430         25   1024 NORMAL  READPBLK
	16:05:14.939314 00.007223 20C00430         17    512 NORMAL  WRITEPBLK|EXFUNC|DATACHECK