In-class notes for 11/11/2019 (CS 273 (OS), Fall 2019)

In-class notes for 11/11/2019

CS 273 (OS), Fall 2019

Web server project - extension form?
Quiz Wednesday Friday - topics below
HW12 (project 3 deliverable) - postponed to Friday due Wednesday

Upcoming homework:
- HW13 - I/O, due Monday 11/18
- HW14 (project 3 deliverable), due Wednesday 11/20

I/O (Input/Output)

Exercise

File systems
- Typical system calls - open(), close(), read(), write(), mkdir(), dup(), lseek(), mount(), etc.
  - Awareness of what these do and that they are FS calls
- Features apparent to the user, with emphasis on those discussed in class
- File storage strategies
  - FAT-32
  - Linux i-node. pseudocode fsck algorithm.
- Block cache: concept, block replacement algorithms, special cases (e.g., doubly indirect blocks, cached i-nodes/directories), sync
- Issues in log-structured file systems and journalling
Questions related to web-server project design and implementation:
- Describe design/behavior of web server (provided list of recommended steps)
- For pthreads, sockets, and FILE operations: be capable of modifying given code examples and identifying what portions of given code accomplish
  - Code examples: pthreads.c, sender.c, receiver.c, FILE.c

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