On Sat, Apr 17, 2021 at 11:33:23AM +0900, Damien Le Moal wrote: > Synchronous writes to sequential zone files cannot use zone append > operations if the underlying zoned device queue limit > max_zone_append_sectors is 0, indicating that the device does not > support this operation. In this case, fall back to using regular write > operations. Zone append is a mandatory feature of the zoned device API.