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gluster-block/docs
Xiubo Li 698dbaced0 blksize: add hw block size setting support
This will still need to depend the taregetcli's saveconfig support,
the rtslib PR is open-iscsi/rtslib-fb#150.

When creating the BV with the 'block-size <SIZE>' option:

In case all the ha nodes have supported the rtslib-fb#150:
1) if local node support the block-size, but if there is any of
   the remote nodes is not, it will fail with the cap not match error.
2) if local node does not support the block-size, no matter whether
   the remote nodes support it or not, it will always ignore the
   block-size option due to the exist bug.

In case if there is any of the ha nodes does not support rtslib-fb#150:
3) if local node support the block-size, it will always fails with the
   cap not match error.
4) if local mode does not support the block-size, no matter whether
   the remote nodes support it or not, it will ignore the block-size
   option due to the exist bug.

Signed-off-by: Xiubo Li <xiubli@redhat.com>
Reviewed-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
2019-07-05 12:51:02 +05:30
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