On Mon, Aug 27, 2018 at 10:05:31AM -0700, Jeremy Allison wrote: > I can't think of a *single* case where a stream adds more > utility than an EA used in the same case. > > I don't want theoretical "well it would be nice if..", > I want clear "we couldn't have done it any other way" > kinds of things. I started this thread with such an example. The fs-verity patch proposed wants to store hundreds of megabytes of data associated with a particular file. The current solution is to append it to the end of the data then magic to set i_size lower but not remove the data from the file like a truncate would. Then more magic to read that data. It can't be stored in an xattr; xattrs are limited to 64k in size. And you have to read them / write them all-in-one-go; you can't read a little bit of them. How would you solve the fs-verity problem with less magic?
