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Ext4 filesystem hits Android, no need to fear data loss (ars technica)Ext4 filesystem hits Android, no need to fear data loss (ars technica)Posted Dec 29, 2010 4:15 UTC (Wed) by jzbiciak (✭ supporter ✭, #5246)In reply to: Ext4 filesystem hits Android, no need to fear data loss (ars technica) by mikov Parent article: Ext4 filesystem hits Android, no need to fear data loss (ars technica)
I think few people realize how truly difficult it is to do good wear leveling. Even reads cause wear! Really? I've never never heard that reads cause any appreciable wear. Can you share a reference?
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Ext4 filesystem hits Android, no need to fear data loss (ars technica) Posted Dec 29, 2010 15:14 UTC (Wed) by busterb (subscriber, #560) [Link]
Just use the 'noatime' mount option.
Ext4 filesystem hits Android, no need to fear data loss (ars technica) Posted Dec 29, 2010 20:16 UTC (Wed) by jzbiciak (✭ supporter ✭, #5246) [Link] atime updates are writes (even though the app only does a read). The comment I was replying to seemed to suggest that pure reads wear out flash. ie. if I mounted a volume read-only, that I could shorten its life dramatically by reading it regularly. While I'm sure there's some impact to reading a flash cell, I've got to believe it's a few orders of magnitude smaller than the effect due to writes, and therefore generally ignorable.
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