Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Transcribed Image Text:aata
01
02
03
04
LC.,0) (...
[Choose ]
mkdir ("/s")
link("/s")
unlink("/s")
✓ creat("/s")
creat("/x/z")
creat("/x/z/e")
mkdir ("/x/z/e")
mkdir("/x/z")
creat("/e")
mkdir("/z")
creat("/e")
;
=
(2, 3).
Transcribed Image Text:We study the simulator vsfy.py and generate the following instance. Please select the correct operation
that took place at each step.
Initial state
inode bitmap
inodes
data bitmap
data
01: Which operation took place?
inode bitmap
inodes
data bitmap
data
inode bitmap
inodes
02: Which operation took place?
data bitmap
data
11000000
[d a:0 r:3] [d a:1 r:2] [] [] [] [] []
11000000
[(,0) (..,0) (x,1)] [(.,1) (..,0)]
inode bitmap
inodes
data bitmap
data
11100000
[d a:0 r:3] [d a:1 r:3] [d a:2 r:2] [] [] [] [] []
11100000
[(,0) (..,0) (x,1)] [(.,1) (..,0) (z,2)] [(.,2) (..,1)] [] [] [] [] []
03: Which operation took place?
11110000
[d a:0 r:3] [d a:1 r:3] [d a:2 r:2] [f a:-1 r:1] [] [] [] []
11100000
[(,0) (..,0) (x,1) (s,3)] [(.,1) (..,0) (z,2)] [(.,2) (..,1)] []
data bitmap
data
11100000
[d a:0 r:3] [d a:1 r:3] [d a:2 r:2] [] [] [] [] []
11100000
[(,0) (..,0) (x,1)] [(.,1) (..,0) (z,2)] [(.,2) (..,1)] [] []
04: Which operation took place?
inode bitmap 11110000
inodes
[d a:0 r:3] [d a:1 r:3] [d a:2 r:2] [f a:-1 r:1] [] [] [] []
11100000
[(,0) (..,0) (x,1)] [(.,1) (..,0) (z,2)] [(.,2) (..,1) (e,3)] []
П
[]
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