公开(公告)号：EP0367702A2

公开(公告)日：1990-05-09

申请号：EP89480141.4

申请日：1989-09-12

申请人： International Business Machines Corporation

发明人： Corrigan, Michael Joseph ,  Freeman, Harrison L. ,  Gorbatenko, George

IPC分类号： G06F9/46 ,  G06F3/06 ,  G06F15/16

CPC分类号： G06F3/0601 ,  G06F15/161 ,  G06F15/167 ,  G06F2003/0697

摘要： One processor (20) of a multiprocessor or distributed system is designated as the owner of the shared storage. The remaining processors of the multiprocessor system are designated as requestor processors (10,30). The shared storage (60,70), typically several disk drive units, are connected to a storage controller (40). The storage controller is connected to all of the processors via a communications bus (80).
The shared storage is dynamically segmented into containers of storage space (A1,...,A3M). A container can vary in size and even can be split up among more than one disk drive unit. A container located on one disk drive unit can also be duplicated, or mirrored, on a different disk drive unit. The owner processor maintains a container map (50) in its dedicated non-volatile storage. The container map contains fields that keep track of the physical location of a container, a use count, a key, and container attributes.

摘要翻译： 多处理器或分布式系统的一个处理器（20）被指定为共享存储器的所有者。 多处理器系统的其余处理器被指定为请求者处理器（10,30）。 共享存储器（60,70）通常是几个磁盘驱动器单元连接到存储控制器（40）。 存储控制器经由通信总线（80）连接到所有处理器。 共享存储被动态分段到存储空间（A1，...，A3M）的容器中。 容器的大小可以变化，甚至可以在多个磁盘驱动器单元之间分开。 位于一个磁盘驱动器单元上的容器也可以复制或镜像在不同的磁盘驱动器单元上。 所有者处理器在其专用非易失性存储器中维护容器图（50）。 容器映射包含跟踪容器的物理位置，使用计数，密钥和容器属性的字段。

公开(公告)号：EP0389396A3

公开(公告)日：1994-03-23

申请号：EP90480018.2

申请日：1990-02-02

申请人： International Business Machines Corporation

发明人： Freeman, Harrison L. ,  Jaaskelainen, William ,  Mustain, Richard Glen ,  Shumway, Larry Donald

IPC分类号： G06F3/06

CPC分类号： G06F3/0601 ,  G06F2003/0697 ,  G06F2212/2022 ,  G11B27/002 ,  G11B27/031 ,  Y10S707/99953 ,  Y10S707/99956

摘要： A technique of efficiently managing Write Once Read Mostly (WORM) volumes on mass optical storage devices is disclosed. A configuration menu asks the user to enter a threshold percentage from 1-100%. The threshold percent­age is multiplied by the volume size to determine a threshold block address. New files are written sequen­tially to the WORM volume up to but not exceeding the threshold block address (57), unless a threshold override indicator is enabled (59). Space on the WORM volume be­tween the threshold block address and the end of the WORM volume is reserved for updated files (60, 61, 62). Updat­ed files can be stored anywhere on the WORM volume, in­cluding above the threshold block address (63). Reserving space for updated files on a WORM volume allows more updated files to be stored on the same WORM volume as original files, and reduces the number of optical disks required to be read. The threshold percentage can be modified by the user at any time desired.

摘要翻译： 公开了一种有效管理大容量光存储设备上的一次读取一次写入（WORM）卷的技术。 配置菜单要求用户从1-100％输入阈值百分比。 阈值百分比乘以卷大小以确定阈值块地址。 除非启用阈值覆盖指示符（59），否则将新文件顺序写入WORM卷，但最多不超过阈值块地址（57）。 阈值块地址和WORM卷末尾之间的WORM卷上的空间被保留用于更新的文件（60,61,62）。 更新后的文件可以存储在WORM卷的任何位置，包括阈值块地址（63）之上。 为WORM卷上的更新文件保留空间允许将更新的文件存储在与原始文件相同的WORM卷上，并减少需要读取的光盘数量。 阈值百分比可以由用户随时修改。

公开(公告)号：EP0389399A3

公开(公告)日：1993-01-20

申请号：EP90480027.3

申请日：1990-02-20

申请人： International Business Machines Corporation

发明人： Freeman, Harrison L. ,  Hoag, Thomas Marshall ,  Mustain, Richard Glen

IPC分类号： G06F15/413

CPC分类号： G06F17/30955 ,  G06F17/30067

摘要： A directory structure for WORM optical media which supports a multi-level tree structure containing several paths is disclosed. When a user defines the first path on the WORM volume, a first file directory group (140) is created for that path. A path directory entry pointing to this file directory group is written to the path directory group (130). Files having this path name are initially written into the first data file area (150) next to this file directory group. The first data file area grows as data is written into it. When a second path is defined, the first data file area is closed and a second file directory group (160) is created on the WORM volume next to the first data file area, thereby wasting little if any space. The path directory group is updated with a new path directory entry that points to this new file directo­ry group. Files having this second path name are written into a growing second data area. If the user now wants a file having the first path name to be written to the disk, a file directory entry is placed in the first file direc­tory group, but the file itself is written into the grow­ing second data file area. In this manner, files are associated with directory entries by a common path name, not necessarily physical location on the disk, although files tend to be relatively close to their associated directory entry.

公开(公告)号：EP0367702B1

公开(公告)日：1995-11-08

申请号：EP89480141.4

申请日：1989-09-12

申请人： International Business Machines Corporation

发明人： Corrigan, Michael Joseph ,  Freeman, Harrison L. ,  Gorbatenko, George

IPC分类号： G06F9/46 ,  G06F3/06 ,  G06F15/16

CPC分类号： G06F3/0601 ,  G06F15/161 ,  G06F15/167 ,  G06F2003/0697

公开(公告)号：EP0389399A2

公开(公告)日：1990-09-26

申请号：EP90480027.3

申请日：1990-02-20

申请人： International Business Machines Corporation

发明人： Freeman, Harrison L. ,  Hoag, Thomas Marshall ,  Mustain, Richard Glen

IPC分类号： G06F15/413

CPC分类号： G06F17/30955 ,  G06F17/30067

摘要： A directory structure for WORM optical media which supports a multi-level tree structure containing several paths is disclosed. When a user defines the first path on the WORM volume, a first file directory group (140) is created for that path. A path directory entry pointing to this file directory group is written to the path directory group (130). Files having this path name are initially written into the first data file area (150) next to this file directory group. The first data file area grows as data is written into it. When a second path is defined, the first data file area is closed and a second file directory group (160) is created on the WORM volume next to the first data file area, thereby wasting little if any space. The path directory group is updated with a new path directory entry that points to this new file directo­ry group. Files having this second path name are written into a growing second data area. If the user now wants a file having the first path name to be written to the disk, a file directory entry is placed in the first file direc­tory group, but the file itself is written into the grow­ing second data file area. In this manner, files are associated with directory entries by a common path name, not necessarily physical location on the disk, although files tend to be relatively close to their associated directory entry.

摘要翻译： 公开了一种支持包含多个路径的多层树结构的WORM光学介质的目录结构。 当用户定义WORM卷上的第一个路径时，将为该路径创建第一个文件目录组（140）。 指向该文件目录组的路径目录条目将被写入路径目录组（130）。 具有该路径名的文件最初被写入该文件目录组旁边的第一数据文件区域（150）。 随着数据被写入，第一个数据文件区域增长。 当定义第二路径时，第一数据文件区域被关闭，并且在第一数据文件区域旁边的WORM卷上创建第二文件目录组（160），从而浪费很少的空间。 路径目录组使用指向此新文件目录组的新路径目录条目进行更新。 具有该第二路径名的文件被写入不断增长的第二数据区。 如果用户现在想要将具有第一路径名称的文件写入磁盘，则文件目录条目被放置在第一文件目录组中，但是文件本身被写入不断增长的第二数据文件区域中。 以这种方式，文件通过公用路径名称与目录条目相关联，但不一定是磁盘上的物理位置，尽管文件往往相对靠近其相关联的目录条目。

公开(公告)号：EP0367702A3

公开(公告)日：1992-03-18

申请号：EP89480141.4

申请日：1989-09-12

申请人： International Business Machines Corporation

发明人： Corrigan, Michael Joseph ,  Freeman, Harrison L. ,  Gorbatenko, George

IPC分类号： G06F9/46 ,  G06F3/06 ,  G06F15/16

CPC分类号： G06F3/0601 ,  G06F15/161 ,  G06F15/167 ,  G06F2003/0697

摘要： One processor (20) of a multiprocessor or distributed system is designated as the owner of the shared storage. The remaining processors of the multiprocessor system are designated as requestor processors (10,30). The shared storage (60,70), typically several disk drive units, are connected to a storage controller (40). The storage controller is connected to all of the processors via a communications bus (80).
The shared storage is dynamically segmented into containers of storage space (A1,...,A3M). A container can vary in size and even can be split up among more than one disk drive unit. A container located on one disk drive unit can also be duplicated, or mirrored, on a different disk drive unit. The owner processor maintains a container map (50) in its dedicated non-volatile storage. The container map contains fields that keep track of the physical location of a container, a use count, a key, and container attributes.

公开(公告)号：EP0389396A2

公开(公告)日：1990-09-26

申请号：EP90480018.2

申请日：1990-02-02

申请人： International Business Machines Corporation

发明人： Freeman, Harrison L. ,  Jaaskelainen, William ,  Mustain, Richard Glen ,  Shumway, Larry Donald

IPC分类号： G06F3/06

CPC分类号： G06F3/0601 ,  G06F2003/0697 ,  G06F2212/2022 ,  G11B27/002 ,  G11B27/031 ,  Y10S707/99953 ,  Y10S707/99956

摘要： A technique of efficiently managing Write Once Read Mostly (WORM) volumes on mass optical storage devices is disclosed. A configuration menu asks the user to enter a threshold percentage from 1-100%. The threshold percent­age is multiplied by the volume size to determine a threshold block address. New files are written sequen­tially to the WORM volume up to but not exceeding the threshold block address (57), unless a threshold override indicator is enabled (59). Space on the WORM volume be­tween the threshold block address and the end of the WORM volume is reserved for updated files (60, 61, 62). Updat­ed files can be stored anywhere on the WORM volume, in­cluding above the threshold block address (63). Reserving space for updated files on a WORM volume allows more updated files to be stored on the same WORM volume as original files, and reduces the number of optical disks required to be read. The threshold percentage can be modified by the user at any time desired.

摘要翻译： 公开了一种在大容量光存储设备上有效管理一次写入读取（WORM）卷的技术。 配置菜单要求用户从1-100％输入阈值百分比。 阈值百分比乘以卷大小以确定阈值块地址。 除非启用阈值覆盖指示符，否则新文件按顺序写入WORM音量，但不超过阈值块地址（57）。 阈值块地址和WORM卷结束之间WORM卷上的空格保留用于更新文件（60,61,62）。 更新的文件可以存储在WORM卷的任何位置，包括阈值块地址（63）以上。 在WORM卷上预留更新文件的空间允许将更多的更新文件存储在与原始文件相同的WORM卷上，并减少需要读取的光盘数量。 阈值百分比可以由用户随时修改。