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graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,601

Website

BTRFS uses COW... what is the resolution of COW? [SOLVED]

Perhaps my google-fu is poor since I found nothing relevant while searching.  What is the true resolution of BTRFS's COW?  In other words, does a log file being written to to a BTRFS filesystem have growing copies of itself on the character level or the blocksize level?

Character level = a copy of the file is saved after each character is written to it.
Blocksize level = a copy of the file is saved after it grows to the size of the BTRFS block size (which I believe is called a leafsize in BTRFS terms).

I hope my question makes sense.

Last edited by graysky (2013-08-02 21:26:42)

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WorMzy

Forum Moderator

From: Scotland

Registered: 2010-06-16

Posts: 11,911

Website

Re: BTRFS uses COW... what is the resolution of COW? [SOLVED]

https://btrfs.wiki.kernel.org/index.php/Glossary

See: transaction

and this: https://btrfs.wiki.kernel.org/index.php … te_Logging

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graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,601

Website

Re: BTRFS uses COW... what is the resolution of COW? [SOLVED]

Nice thank you for the links.  Solved.

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