Peter Arremann wrote:
On Thursday 30 June 2005 23:08, Jim Cornette wrote:
References to ext3 filesystem on CF
Flash memory has a limited number of cycles before it goes bad... Somewhere
between ten thousand and 10 million, depending on the manufacturing process
and design. Check with your manufacturers specs for that.
All traditional filesystem layouts are known to re-write the same sectors over
and over again - super blocks, inodes and so on. They are less than ideal for
flash memory because of that - they'll wear out some memory blocks real fast
while most of the rest is still fine.
Because of that, special filesystems like JFFS(2) have been developed that
take the rewrite cycles into account and make your CF card last much much
longer. For more info, this page
http://linuxdevices.com/news/NS7386103729.html has some pretty good
information.
Peter.
Thanks Peter for the alternative FS. We had a CF fail (Sandisk 128MB)
where it was recognized by BIOS, but locked up during startup. The
device does a lot of file updating where the CF was used.
This should help out a lot for this appliance.
Jim
