LVM.DLL

This component is used by the Logical Volume Manager.

This library contains the Logical Volume Manager functions.

Newer LVM.DLL Forwarder

eComStation 2.x included a new LVM.DLL that forwards some of it's functions to IVM.DLL. It was reported that the newer "LVM.DLL forwarder" bypasses a couple of checks so that Bootable JFS and Air-BOOT can work seamlessly.

The newer "LVM.DLL forwarder" intercepts some functions like:

• The Start_Logging and Stop_Logging functions to enable merging its own log data with the LVM log (when LVM logging is turned on).
• It also wraps Open_LVM_Engine to save copies of any Windows NT disk signatures from the MBR, and wraps Commit_Changes to restore them back (except when an explicit newmbr operation was performed).
• It wraps Get_Volume_Information to always report compatibility volumes as Bootable if Air-Boot is installed.
• And similarly wraps Get_Valid_Options to report than a compatibility volume can be set as Installable if Air-Boot is installed.

Tip: Set the environment variable LVM_LOGWRAPPER=1, then run LVM with the /startlog parameter, the wrapper's own log will get added to the log generated by LVM.

Version

Date	Version	Size	Comments
9-10-2004 8:51a	1.01	73,551 bytes	Rev: 1.01 Date/Time: 20110111. Forwarder for Logical Volume Manager by eComStation Development Group. This version seems to be a forwarder to ¨IVM.DLL which looks like the original LVM.DLL renamed.

DLL Entry Points

1	Get_Partition_Handle	2	Remove_Boot_Manager
3	Get_Boot_Manager_Menu	4	Assign_Drive_Letter
5	ADD_TO_BOOT_MANAGER16	6	REMOVE_BOOT_MANAGER16
7	Set_Min_Install_Size	8	INSTALL_BOOT_MANAGER16
9	Export_Configuration	10	ASSIGN_DRIVE_LETTER16
11	GET_PARTITION_HANDLE16	12	SET_MIN_INSTALL_SIZE16
13	EXPORT_CONFIGURATION16	14	Get_Installable_Volume
15	Hide_Volume	16	Get_Drive_Control_Data
17	GET_BOOT_MANAGER_MENU16	18	Read_Sectors
19	HIDE_VOLUME16	20	Get_Volume_Information
21	Set_OS_Flag	22	Get_LVM_View
23	Stop_Logging	24	Set_Startable
25	Start_Logging	26	SET_OS_FLAG16
27	GET_INSTALLABLE_VOLUME16	28	READ_SECTORS16
29	GET_DRIVE_CONTROL_DATA16	30	Create_Volume
31	Delete_Volume	32	GET_LVM_VIEW16
33	Write_Sectors	34	STOP_LOGGING16
35	Get_Boot_Manager_Handle	36	Expand_Volume
37	GET_VOLUME_INFORMATION16	38	GET_BOOT_MANAGER_HANDLE16
39	Get_Partitions	40	SET_STARTABLE16
41	Commit_Changes	42	Get_Boot_Manager_Options
43	START_LOGGING16	44	Remove_From_Boot_Manager
45	Set_Boot_Manager_Options	46	Set_Free_Space_Threshold
47	CREATE_VOLUME16	48	Boot_Manager_Is_Installed
49	DELETE_VOLUME16	50	Get_Volume_Control_Data
51	WRITE_SECTORS16	52	EXPAND_VOLUME16
53	GET_BOOT_MANAGER_OPTIONS16	54	Get_Partition_Information
55	REMOVE_FROM_BOOT_MANAGER16	56	SET_BOOT_MANAGER_OPTIONS16
57	GET_VOLUME_CONTROL_DATA16	58	GET_PARTITIONS16
59	COMMIT_CHANGES16	60	SET_FREE_SPACE_THRESHOLD16
61	Changes_Pending	62	CHANGES_PENDING16
63	Set_Installable	64	Get_Reboot_Flag
65	Open_LVM_Engine	66	Set_Reboot_Flag
67	Reboot_Required	68	BOOT_MANAGER_IS_INSTALLED16
69	Set_Active_Flag	70	Rediscover_PRMs
71	SET_INSTALLABLE16	72	Close_LVM_Engine
73	GET_REBOOT_FLAG16	74	OPEN_LVM_ENGINE16
75	SET_REBOOT_FLAG16	76	REBOOT_REQUIRED16
77	GET_PARTITION_INFORMATION16	78	SET_ACTIVE_FLAG16
79	Create_Partition	80	Get_Reserved_Drive_Letters
81	Delete_Partition	82	REDISCOVER_PRMS16
83	Get_Install_Flags	84	Get_Drive_Status
85	Set_Install_Flags	86	Get_Valid_Options
87	CLOSE_LVM_ENGINE16	88	CREATE_PARTITION16
89	DELETE_PARTITION16	90	GET_DRIVE_STATUS16
91	Refresh_LVM_Engine	92	GET_RESERVED_DRIVE_LETTERS16
93	Get_Available_Drive_Letters	94	Free_Engine_Memory
95	GET_AVAILABLE_DRIVE_LETTERS16	96	New_MBR
97	GET_INSTALL_FLAGS16	98	Set_Name
99	SET_INSTALL_FLAGS16	100	NEW_MBR16
101	GET_VALID_OPTIONS16	102	REFRESH_LVM_ENGINE16
103	FREE_ENGINE_MEMORY16	104	SET_NAME16
105	Install_Boot_Manager	106	Add_To_Boot_Manager

DLLs Loaded

• DOSCALL1.DLL
• NLS.DLL
• MSG.DLL