Extent - based addressing structures rooted in the inode are used for mapping file data to disk 根植于inode基于盤區(qū)的尋址結(jié)構(gòu)用來將文件數(shù)據(jù)映射到磁盤。
The addressing structure is a b tree populated with extent descriptors the triples above , rooted in the inode and keyed by logical offset within the file 尋址結(jié)構(gòu)是一棵b +樹,該樹由盤區(qū)描述符(上面提到的三元組)填充,根在inode中,鍵為文件中的邏輯偏移量。
Together , the aggregate superblock and disk allocation map , file descriptor and inode map , inodes , directories , and addressing structures represent jfs control structures or meta - data 聚集超級塊和磁盤分配映射表、文件描述符和inode映射表、 inode 、目錄以及尋址結(jié)構(gòu)一起表示了jfs控制結(jié)構(gòu)或元數(shù)據(jù)。
Jfs uses extent - based addressing structures , along with aggressive block allocation policies , to produce compact , efficient , and scalable structures for mapping logical offsets within files to physical addresses on disk Jfs使用基于盤區(qū)的尋址結(jié)構(gòu),連同主動的塊分配策略,產(chǎn)生緊湊、高效、可伸縮的結(jié)構(gòu),以將文件中的邏輯偏移量映射成磁盤上的物理地址。
These file systems rely on restart - time utilities that is , fsck , which examine all of the file system s meta - data such as directories and disk addressing structures to detect and repair structural integrity problems 這些文件系統(tǒng)依靠重啟實用程序(也就是fsck ) , fsck檢查文件系統(tǒng)的所有元數(shù)據(jù)(例如:目錄和磁盤尋址結(jié)構(gòu))以檢測和修復(fù)結(jié)構(gòu)完整性問題。
The ipv4 based dhcp ( i . e . dhcpv4 ) has been playing an important role in existing ipv4 based internet and will play an even more important role in future ipv6 based internet , considering its greater address space and more flexible address structure . it is therefore worthwhile to study techniques pertinent dhcpv6 and to attempt an experimental implementation for further understanding and refinement of dhcpv6 新一代ip協(xié)議( ipv6 )地址空間的擴(kuò)大和地址結(jié)構(gòu)的靈活性,給從ipv4向ipv6過渡帶來許多新的問題,研究基于ipv6的dhcpv6協(xié)議,并通過實踐進(jìn)一步完善dhcpv6 ,就具有十分重要的研究意義和實驗價值。