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.

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.

More at,3166.html

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.
Great. What about my S2 and S3?
Perhaps someone could comment, my French isn't up to this:

[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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