• Javier González's avatar
    lightnvm: eliminate nvm_lun abstraction in mm · 8e53624d
    Javier González authored
    In order to naturally support multi-target instances on an Open-Channel
    SSD, targets should own the LUNs they get blocks from and manage
    provisioning internally. This is done in several steps.
    
    Since targets own the LUNs the are instantiated on top of and manage the
    free block list internally, there is no need for a LUN abstraction in
    the media manager. LUNs are intrinsically managed as in the physical
    layout (ch:0,lun:0, ..., ch:0,lun:n, ch:1,lun:0, ch:1,lun:n, ...,
    ch:m,lun:0, ch:m,lun:n) and given to the targets based on the target
    creation ioctl. This simplifies LUN management and clears the path for a
    partition manager to sit directly underneath LightNVM targets.
    Signed-off-by: default avatarJavier González <javier@cnexlabs.com>
    Signed-off-by: default avatarMatias Bjørling <m@bjorling.me>
    Signed-off-by: default avatarJens Axboe <axboe@fb.com>
    8e53624d
lightnvm.c 20.4 KB