correctness challenges for ordered:

Question

0.00/5 (No votes)

See more:

Hi...

I'm studding subject call (Advance OS)

but I don't understand this two case

could any one help my ;(

A. rmdir, re-use block for file, ordered write of file,crash before rmdir or write committed
now scribbled over the directory block
fix: defer free of block until freeing operation forced to log on disk

B. rmdir, commit, re-use block in file, ordered file write, log force,crash, replay rmdir
file is left w/ directory content e.g. . and ..
fix: revoke records, prevent log replay of a given block

I'm waiting....

Posted 25-Jul-13 23:47pm

qamoora

Add a Solution

Comments

Mehdi Gholam 26-Jul-13 5:49am

Your question makes little sense, please edit it and add more information.

qamoora 26-Jul-13 6:12am

You can check out the chapter which I took from those issues through this link
http://zoo.cs.yale.edu/classes/cs422/2013/lec/l-sync

qamoora 26-Jul-13 6:04am

I just want someone to explain those issues to me

[no name] 26-Jul-13 7:29am

What issues? These are just random bits of text taken out of context and put into a vague request for help.

qamoora 26-Jul-13 8:26am

come on,,,
it's a slide from my lecture and i want to understand it

if you know what it mean <<tell me

[no name] 26-Jul-13 9:04am

Come on yourself.
No one can tell you what it means because it is just random bits of text taken out of context where you have put into a vague request for help.

qamoora 26-Jul-13 9:30am

ok thank you

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)