On Sun, Sep 24, 2017 at 04:02:42PM +0900, Damien Le Moal wrote: > Zone write locking is mandatory for host managed zoned block devices so > that sequential write order can be maintained. This is however optional > for host aware devices as the device firmware can handle random writes. > > The default initialization always enable zones write locking for any > zoned block device. Introduce the zones_wlock sysfs attribute to allow > users to change this default setting for host aware disks. Changes to > zones write locking state are not allowed for host managed disks (zones > write locking is always enabled) and for regular disks (zones write > locking is always disabled). Is it really worth the effort? Until someone who really ares about HA drives and shows a benefit for a workload that matters I'd just leave to code off for HA.
