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ext4 and data loss

ext4 and data loss

Posted Mar 12, 2009 11:11 UTC (Thu) by michaeljt (subscriber, #39183)
In reply to: ext4 and data loss by eru
Parent article: ext4 and data loss

Indeed. Except of course that I was thinking more of a very short-lived log for data which would not otherwise be written back, rather than a full-blown log-structured file system.

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ext4 and data loss

Posted Mar 13, 2009 8:54 UTC (Fri) by michaeljt (subscriber, #39183) [Link]

In fact, one could sum up the idea as a mini-log filesystem on top of the normal filesystem, acting as a cache for things that can't immediately be written out to the real filesystem. Actually, I could imagine something like that existing outside of the actual filesystem code, but handled separately by the kernel, with the log either a pre-allocated file on the filesystem or a set of pre-allocated blocks on a swap device.

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