Re: XFS vs. JFS

[Seth Mos <knuffie@xxxxxxxxx>]

At 12:04 1-7-2001 +0200, Bernhard R. Erdmann wrote:
> Hi,
>
> how do you think about IBM's JFS for Linux version 1.0 released last
> friday?
> http://oss.software.ibm.com/jfs/

It's great because now we really _do_ have 3 journaling fs.
It gives people choice which is very important.

Each has it's own merits but here are some:

IBM has it's own userbase that has AIX with JFS. Don't know if the layout 
is compatible.
SGI has a large userbase around Irix and XFS. This means that people don't 
have to reformat their 5TB disk storage just be using linux instead of irix.
ext3 is backwardscompatible which means you don't have to reformat any 
existing ext2 systems for getting journaling to work.

> Is it or can it be a competitor for XFS?

No, it is not about competition. It's about choice.

> The papers mention JFS only journaling metadata, not the data itself.
> Does XFS also journal the data?

No, only ext3 journals the full data when you ask it to function in 
version1 mode.

Cheers

--
Seth
Every program has two purposes one for which
it was written and another for which it wasn't
I use the last kind.