Pawel Jakub Dawidek wrote:
- todays desktop drives can lie about writing data. SoftUpdates relies
on some assumptions about when the data is physically written to
media, and those are not always valid today
I think journaling relies on the same assumptions.
Not gjournal, because it uses BIO_FLUSH I/O requests which flushes disk
write cache when needed
so when the crash occur exactly when BIO_FLUSH is sent or while the
cache is flushing, there is still no corruption possbile? If so, this
would be an advantage over SU, as it does surely not use the new
introduced BIO_FLUSH. In the other hand i've seen couple of other JFS
that went corrupt for "no reason". I don't want to be paranoid, but i
really want to be "sure" that the design is trustable.
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