Comment 129 for bug 453579

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Brian Rogers (brian-rogers) wrote : Re: corruption of large files reported with linux 2.6.31-14.46 on ext4

The BitTorrent crash scenario doesn't indicate a bug. The only way for an application to know about uncommitted writes is to scan the file (for example by rehashing in this instance). To avoid doing this every time it's started, it saves a record of what parts have been downloaded. In a crash, this record may be more up to date than what's actually saved to the disk.