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    • 1. 发明授权
    • Adaptive replacement cache
    • 自适应替换缓存
    • US07469320B2
    • 2008-12-23
    • US11417078
    • 2006-05-03
    • Jeffrey S. BonwickWilliam H. MooreMark J. MaybeeMatthew A. Ahrens
    • Jeffrey S. BonwickWilliam H. MooreMark J. MaybeeMatthew A. Ahrens
    • G06F12/00
    • G06F12/122G06F12/0802G06F12/123
    • A method for caching a block, which includes receiving a request to store the block in a cache and determining whether the cache is able to expand. If the cache is not able to expand, then determining whether evictable blocks are present in the cache and, if evictable blocks are present in the cache determining whether a total size of the evictable blocks is greater than or equal to a size of the block, evicting a sufficient number of the evictable blocks from the cache and storing the block in the cache, if the total size of the evictable blocks is greater than or equal to the size of the block, and activating a cache throttle, if the total size of the evictable blocks is less than the size of the block.
    • 一种用于缓存块的方法,其包括接收将所述块存储在高速缓存中并且确定所述高速缓存是否能够扩展的请求。 如果高速缓存不能扩展,则确定可缓存块是否存在于高速缓存中,并且如果可缓存的块存在于高速缓存中,确定可驱动块的总大小是否大于或等于块的大小, 如果所述可驱动块的总大小大于或等于所述块的大小,并将所述块存储在所述高速缓存中,则将所述可驱动块的足够数量从所述高速缓存中驱出并将所述块存储在所述高速缓存中,并且如果所述块的总大小 可驱动的块小于块的大小。
    • 2. 发明授权
    • Unlimited file system snapshots and clones
    • 无限文件系统快照和克隆
    • US08549051B2
    • 2013-10-01
    • US11513800
    • 2006-08-31
    • Matthew A. AhrensMark J. MaybeeJeffrey S. Bonwick
    • Matthew A. AhrensMark J. MaybeeJeffrey S. Bonwick
    • G06F12/00G06F17/30
    • G06F17/30088
    • The invention relates to a system that includes a file system configured to create a snapshot of a hierarchical block tree (HBT) and a storage pool. After the snapshot has been created, the storage pool includes a snapshot, where the snapshot includes a copy of a first version of a root block and the HBT, where the HBT includes a second version of the root block. Further, the copy of the first version of the root block is created prior to overwriting the first version of the root block with the second version of the root block, the second version of the root block comprises references to a first block and a second block, and the copy of the first version of the root block comprises a reference to the first block and no reference to the second block.
    • 本发明涉及一种系统,其包括被配置为创建分层块树(HBT)和存储池的快照的文件系统。 创建快照后,存储池将包含一个快照,其中快照包含根块和HBT的第一个版本的副本,其中HBT包括根块的第二个版本。 此外,在用根块的第二版本覆盖根块的第一版本之前创建根块的第一版本的副本,根块的第二版本包括对第一块和第二块的引用 ,并且根块的第一版本的副本包括对第一块的引用,并且不引用第二块。