Posted Jul 20, 2006 23:43 UTC (Thu) by ncm
In reply to: Three comments
Parent article: Crash-only software: More than meets the eye
...even journaling 'data+metadata' can work correctly only if the disk obey some order of writing the data.
Precisely the point. However, data+metadata journaling may be kind of pointless if you don't have any way of telling how much of the data you had meant to have written was, in fact, written. For example, if you have an outage while compiling a kernel, no amount of journaling can make it safe to skip "make clean" before running "make" again. That makes the cheapest, fastest journaling regime also best, for such an environment.
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