On 31/10/18 19:29, Bart Van Assche wrote: > On Wed, 2018-10-31 at 18:34 +0200, Boaz Harrosh wrote: >> On 27/10/18 11:20, Christoph Hellwig wrote: >>> The only real user of the T10 OSD protocol, the pNFS object layout >>> driver never went to the point of having shipping products, and we >>> removed it 1.5 years ago. Exofs is just a simple example without >>> real life users. >>> >>> The code has been mostly unmaintained for years and is getting in the >>> way of block / SCSI changes, so I think it's finally time to drop it. >>> >>> Quote from Boaz: >>> >>> "As I said then. It is used in Universities for studies and experiments. >>> Every once in a while. I get an email with questions and reports. >>> >>> But yes feel free to remove the all thing!! >> >> I think I'm changing my mind about this. >> [ ... ] > > The osd driver was accepted in the upstream kernel in 2009. I have checked all > commits in Linus' tree for the osd driver that went in since 2009. All changes > made by other kernel developers than you are the result of tree-wide refactoring, > compiler warning fixes, fixes for issues detected by static source code > analyzers or spelling fixes. Hence my question: how big is the user base of the > exofs and osd kernel drivers? > Not big at all. And none of them production setups. As I said mainly used by academia. Thanks Boaz > Thanks, > Bart.