I would expect that it must: the OS cannot assume that the newly connected drive wasn't altered by another system in the meantime. (Or that it's the same FS, ev

I would expect that it must: the OS cannot assume that the newly connected drive wasn't altered by another system in the meantime. (Or that it's the same FS, even.) (although I grant that, a.) the FS probably has a UUID that idents it, and b.) it's only gone for a few ms — but those aren't things that, reasonably, the OS is going to look at to go "eh, we don't need to recover this newly attached disk".) (I'm not sure I'm still grokking the differences between a WAL & a journal, to you.)