log-structured-file-system

CS350 Program 2 (Lab 7)

Log-structured file system simulation implemented in C++.

See PDF for more details on the project description.

Group members:

• Annika Wiesinger
• Charlie DiGiovanna

How to run lab 7:

1. make drive (if first time)
2. make
3. ./Lab7

OR

1. make again (to start with a fresh drive)
2. ./Lab7

Commands:

• import <filename> <lfs_filename>
  • Import textfile <filename> and save under the new name <lfs_filename>
• remove <lfs_filename>.
  • Remove the file with name <lfs_filename>.
• cat <lfs_filename>
  • Display the contens of <lfs_filename>.
• display <lfs_filename> <howmany> <start>
  • Display <howmany> bytes of <lfs_filename> starting from byte <start>.
• overwrite <lfs_filename> <howmany> <start> <char>
  • Write <howmany> copies of the character <char> into file <lfs_filename> beginning at byte <start>. If this exceeds the original size of the file, the overwrite will grow the file.
• list or ls
  • List all the names and sizes of the files.
• clean <how-many>
  • Take <how-many> dirty segments and clean them.
• exit
  • Write out cached memory to disk and exit.
• segmentno
  • Print current active segment number.
• summary <how-many> <start>
  • Print <how-many> unsigned int's of the segment summary of the active segment starting from <start>.
• mimport <filename> <lfs_filename> <how-many>
  • Call "import <filename> <lfs_filename>" <how-many> times.
• imap <how-many> <start>
  • Print <how-many unsigned int's from the imap of the active segment starting from <start>.
• cpr
  • Print the contents of the checkpoint region.
• cleans
  • Print the clean segments remaining.
• nextblock
  • Print the next available block on the active segment (local index).
• clear
  • Clear the LFS shell.

Thanks!