What about other filesystems?

Posted Jan 18, 2021 13:05 UTC (Mon) by pbonzini (subscriber, #60935)
In reply to: What about other filesystems? by Wol
Parent article: Fast commits for ext4

> AND YOU CAN'T EVEN RELY ON JOURNALLING because you don't know whether the file system has written the journal before, after, or in the middle of writing the data.

The filesystem is going to write data before metadata, so that you won't have a file that's full of zeros (or worse, full of stale data including another user's cleartext password). With "old Unix" you could get a file that's full of trash after a power failure; I sure did. So if anything journalling makes things better.

What about other filesystems?

Posted Jan 21, 2021 19:42 UTC (Thu) by mstone_ (subscriber, #66309) [Link]

Yeah, the confusion here comes from comparing the current state of affairs to a past state that didn't exist.