Hello Amir, thanks a lot for your reply! > Are you asking the question without being aware of all the discussions > that led to this patch https://lkml.org/lkml/2018/4/23/994 Yes, I was not aware of those. Am I right assuming that what you mention is what Posgres is now referring to as "fsyncgate" (https://wiki.postgresql.org/wiki/Fsync_Errors)? > The short answer is no, the latter provides a better guaranty. > The longer answer is that durability guarantees depends on kernel version, > because situation has been changing in v4.13, v4.14 and now again in > v4.17-rc and stable kernels. Thanks for this summary. >> Being able to link to an authorative answer would be very appreciated. > > Sadly, there is no documentation at the level that you desire. Ah, I was calling the the answer I might get on this list the authoritative answer that I would link to :) Niklas
