Do I have to umount JFFS2?
pm-mtd at mw-itcon.de
Fri Dec 16 11:54:50 EST 2005
alfred hitch wrote:
> Hi Peter,
> We happened to have our system in rw mode (dont ask me why,I will be
> Now, we have made it ro.
> Files in question happened to be "sh" or libc.so. etc.. basically one
> which appeared to be in memory at that time before kernel oops or
> sudden resets etc. So, to answer your question, yes they were from
> start there. After making ro as ofnow we havent seen any corruptions.
> But, my head has been looking for a reason as to why would it be
> executables be ever written back to flash ??
I do not know exactly. But a question to the others: Does the wear
leveling affect only free blocks, or does it reorganize seldom written
used blocks too?
> Well jffs2 version we are using happened to be from snapgear 3.0 from
> net. so I am kinda biased and hoping we arent with a such a broken
> (How to update to latest btw ? 2.4 backwards compatible ?)
> Didnt get this comment of ur's :
> 1. Single files can be still corrupted, when you write them and press reset.
When you press reset, when a file is written, you get a partly written
block. So you get a file, which is not written completely. This
corruption is detected by jffs2 and issues warnings. The filesystem as
whole stays intact, but the file as such doesn't have the contents you
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