[illumos-gate] 16087 lseek(SEEK_DATA) on ZFS races with writes and can briefly miss data before it is flushed in a txg -- Rob Norris <rob.norris⊙kc>

nice.

so was this just much harder to trigger in the past, so we never noticed?

yes. well, harder in a sense that you need consumer for that API

I thought gnu coreutils didn't support SEEK_HOLE/SEEK_DATA because it was 'nonstandard'.. guess they changed their minds

if I remember, linux added it

(and maybe austin group?)

sjorge: it is not easy to trigger even now