Lecture 20: Filesystems 4
Filesystems 4 (10:32)
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Filesystem reliability / Hard drive atomicity (01:32)
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Reliability issues (00:51)
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Recall: FAT file creation / exercise in fat ordering (17:10)
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Exercise 2: xv6 FS ordering (03:40)
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Recovery with careful ordering (03:19)
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Exercise: Unlink (06:15)
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fsck / Ordering and disk performance (01:33)
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Beyond ordering: transactions / redo logging (12:44)
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The xv6 journal (03:51)
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What is a transaction? / Redo logging performance (02:39)
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Degrees of consistency (01:57)
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Multiple copies: Mirroring disks (04:38)
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Snapshots (97:49:19)
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