Messages in this thread | | | Date | Mon, 19 Mar 2018 21:00:33 +0900 | From | KAMEI Hitoshi <> | Subject | [PATCH 0/2] rbd: thick-provision image support |
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This patch series adds the thick-provision image support to /drivers/block/rbd.c relating to https://github.com/ceph/ceph/pull/18317. The rbd will not issue the discard operation to thick-provision images, if applied.
The rbd should not discard any allocated blocks of thick-provision image to ensure writing data to rbd images. So this patch prevents from discarding allocated blocks on thick-provision image.
This patch series creates sysfs file to manipulate thick-provision status. If users write "1" to /sys/bus/rbd/devices/<dev-id>/thick, then the image is changed to thick-provision image. And if users write "0" to it, then the image is changed to thin-provision image. I will add the code changing status for the rbd map command.
Hitoshi Kamei (2): rbd: RBD_DEV_FLAG_THICK rbd_dev_flags bit rbd: add 'thick' sysfs rbd device attribute
Documentation/ABI/testing/sysfs-bus-rbd | 6 ++++++ drivers/block/rbd.c | 37 +++++++++++++++++++++++++++++++++ 2 files changed, 43 insertions(+)
-- 2.15.1
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