Mailinglist Archive: opensuse (729 mails)

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Re: [opensuse] SD card error
On 06/01/2015 12:44 PM, jdd wrote:

you may be right, extfat can be possible, as my deivces also read 64Gb
SDXC cards with extfat, but is this a good thing, is extfat better then
Fat 32, I have no idea

My opinion:

FAT was not a good thing
vFAT was not a good thing
FAST32 was not a good thing
exFAT is not a good thing.

Basic reasons.

* Single "superblock" and file allocation table is vulnerable.

* No journalling.


The development community[1], mostly using Linux as a platform, have
done a lot of work on how file systems affect performance of SSD/Flash
and developed different file systems to expereiment with this and better
address strengths and weaknesses. Some of these do better than BtrFS.
It's all out there for a quick google. Actually its overwhelming the
amount of work that has been done.

<quote
src="http://www.tomshardware.com/news/NAND-Flash-Flash-Friendly-File-System-F2FS-Jaegeuk-Kim,18229.html";>
Last week Kim said the company chose a log-structured file system (LFS)
approach, which it adapted for new form factors like SSDs, SD cards and
more. ...

"Because a NAND-based storage device shows different characteristics
according to its internal geometry or flash memory management scheme aka
FTL, we add various parameters not only for configuring on-disk layout,
but also for selecting allocation and cleaning algorithms," Kim added.
</quote>

More at
http://www.tomshardware.com/reviews/ssd-file-system-ntfs,3166.html

http://en.wikipedia.org/wiki/F2FS
https://lwn.net/Articles/520003/

And the big YES-BUT

My phone and camera won't handle F2FS.
Well _M_A_Y_B_E_ there will be ROM for my phone, if I want to buqqer up
some other functionality.

http://nexus5.wonderhowto.com/how-to/convert-any-kitkat-rom-your-nexus-4-5-faster-flash-friendly-file-system-0156428/
Great. What about my S2 and S3?
Perhaps someone could comment, my French isn't up to this:
http://www.galaxys-team.fr/viewtopic.php?f=91&t=43494




[1] That includes researchers at Intel and other semiconductor firms as
well as at universities
--
A: Yes.
> Q: Are you sure?
>> A: Because it reverses the logical flow of conversation.
>>> Q: Why is top posting frowned upon?

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