On Fri, Apr 16, 2021 at 06:17:21PM +0200, David Sterba wrote: > On Fri, Apr 16, 2021 at 12:05:27PM +0900, Damien Le Moal wrote: > > From: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> > > > > For zoned btrfs, zone append is mandatory to write to a sequential write > > only zone, otherwise parallel writes to the same zone could result in > > unaligned write errors. > > > > If a zoned block device does not support zone append (e.g. a dm-crypt > > zoned device using a non-NULL IV cypher), fail to mount. > > > > Signed-off-by: Johannes Thumshirn <johannes.thumshirn@xxxxxxx> > > Signed-off-by: Damien Le Moal <damien.lemoal@xxxxxxx> > > Added to misc-next, thanks. I'll queue it for 5.13, it's not an urgent > fix for 5.12 release but i'll tag it as stable so it'll apear in 5.12.x > later. Please don't. Zone append is a strict requirement for zoned devices, no need to add cargo cult code like this everywhere.