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Securing exclusive access to a copy of a metadata track via a process while the metadata track is held in a shared mode by another process
Securing exclusive access to a copy of a metadata track via a process while the metadata track is held in a shared mode by another process
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机译:当元数据轨道由另一个进程保持在共享模式下时,通过一个进程确保对元数据轨道的副本的独占访问
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摘要
In response to determining, by a storage controller, that a first process is to perform a write operation, a customer data track in a cache is configured for exclusive access while waiting for the write operation on the customer data track to be performed by the first process. In response to configuring the customer data track for the exclusive access, a copy of a metadata track is generated, wherein the metadata track stores metadata information of the customer data track and is configured for shared access. The copy of the metadata track is configured to provide exclusive access to a second process to perform operations on the copy of the metadata track, wherein the first process is able to perform the write operation on the customer data track that causes the metadata track to be updated while the second process performs the operations on the copy of the metadata track.
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