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> 2gb And Up Sd Cards Supported, driver available for cxxxx
jochen-02
post Jan 18 2007, 10:42 AM
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QUOTE(speculatrix @ Jan 18 2007, 03:21 PM)
I don't know if the flash controllers on the cards understand the fat filesystem enough to do any special wear levelling, but that might be the case and explain why cards seem to wear out quicker using ext3.

No, I think the reason is journal updates.
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Antikx
post Jan 18 2007, 11:10 AM
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QUOTE(HoloVector @ Jan 17 2007, 09:55 PM)
With my soldering skills, I'd be more likely to neuter him!  ohmy.gif
*

laugh.gif
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Antikx
post Jan 18 2007, 11:14 AM
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QUOTE(jochen-02 @ Jan 18 2007, 12:39 PM)
Yes. The main difference between ext2 and ext3 is journalling. ext3 is ext2 with added journalling feature. Which advantages do you expect from journalling on a PDA?
Since journal updates accures quite frequent it in fact may add much wear to a flash memory card.
*

Perhaps I'm ignorant but I thought journaling might be good on flash memory so that it lowers the chance of something getting corrupt if you have it open when you need to cold boot your Zaurus because of a crash. *shrug* Maybe I'm mistaken.
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InSearchOf
post Jan 18 2007, 11:32 AM
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QUOTE(Antikx @ Jan 18 2007, 02:14 PM)
QUOTE(jochen-02 @ Jan 18 2007, 12:39 PM)
Yes. The main difference between ext2 and ext3 is journalling. ext3 is ext2 with added journalling feature. Which advantages do you expect from journalling on a PDA?
Since journal updates accures quite frequent it in fact may add much wear to a flash memory card.
*

Perhaps I'm ignorant but I thought journaling might be good on flash memory so that it lowers the chance of something getting corrupt if you have it open when you need to cold boot your Zaurus because of a crash. *shrug* Maybe I'm mistaken.
*



Journaling is GOOD! very good... but for a device (SD and CF) with a "write life" you dont want to waste its life span on journal writes...

Late
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speculatrix
post Jan 18 2007, 01:27 PM
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QUOTE(jochen-02 @ Jan 18 2007, 07:39 PM)
Yes. The main difference between ext2 and ext3 is journalling. ext3 is ext2 with added journalling feature. Which advantages do you expect from journalling on a PDA?
Since journal updates accures quite frequent it in fact may add much wear to a flash memory card.
*


it's also vital to check that your flash card is mounted "noatime" too so that every file or directory access doesn't result in updating the timestamps.
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speculatrix
post Jan 18 2007, 01:31 PM
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QUOTE(Antikx @ Jan 18 2007, 08:14 PM)
QUOTE(jochen-02 @ Jan 18 2007, 12:39 PM)
Yes. The main difference between ext2 and ext3 is journalling. ext3 is ext2 with added journalling feature. Which advantages do you expect from journalling on a PDA?
Since journal updates accures quite frequent it in fact may add much wear to a flash memory card.
*

Perhaps I'm ignorant but I thought journaling might be good on flash memory so that it lowers the chance of something getting corrupt if you have it open when you need to cold boot your Zaurus because of a crash. *shrug* Maybe I'm mistaken.
*



it's a balance. I'd hope that you don't lock up your Z too often, but if you are, then journalling would probably be a good thing - however, if you are really thrashing your memory cards with writes, you probably ought to get a microdrive. I'd rather get a corrupted memory card and reformat and replace its contents than have the card go bad.

Anyway, I would never keep the master and only copy of data on a memory card in case it goes bad or the device its in gets lost or stolen. I had a nice Viking ultra-hi-speed card stolen in a TomTom GO just before xmas sad.gif
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