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Improving ext4: bigalloc, inline data, and metadata checksumsImproving ext4: bigalloc, inline data, and metadata checksumsPosted Dec 11, 2011 10:18 UTC (Sun) by vsrinivas (subscriber, #56913)In reply to: Improving ext4: bigalloc, inline data, and metadata checksums by tytso Parent article: Improving ext4: bigalloc, inline data, and metadata checksums
FFS w/ soft updates assumes that drives honor write requests in the order they were dispatched. This is not necessarily the case, weakening the guarantees it means to provide. Also FFS doesn't ever issue what linux calls 'barriers' (on BSD known as device cache flushes or BUF_CMD_FLUSH).
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