Commit 3ec532e1 authored by Vitaliy Mysak's avatar Vitaliy Mysak Committed by Jim Harris
Browse files

OCF: hotremove support 



Add basic handling of base devices hotremove
When either core or caching device gets unregistered,
  the vbdev_ocf does so as well

Change-Id: I05769f714bf22cb320558fed86adc8c3d8a0a185
Signed-off-by: default avatarVitaliy Mysak <vitaliy.mysak@intel.com>
Reviewed-on: https://review.gerrithub.io/c/435729


Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Tested-by: default avatarSPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: default avatarChangpeng Liu <changpeng.liu@intel.com>
Reviewed-by: default avatarDarek Stojaczyk <dariusz.stojaczyk@intel.com>
Reviewed-by: default avatarTomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: default avatarPawel Wodkowski <pawelx.wodkowski@intel.com>
parent 0487d3a4

lib/bdev/ocf/vbdev_ocf.c

+19 −1
Original line number Diff line number Diff line
@@ -780,6 +780,24 @@ vbdev_ocf_module_fini(void) 
	vbdev_ocf_ctx_cleanup();

}



/* When base device gets unpluged this is called

 * We will unregister cache vbdev here */

static void

hotremove_cb(void *ctx)

{

	struct vbdev_ocf_base *base = ctx;

	struct spdk_bdev *bdev = base->bdev;



	if (base->parent->state.doing_finish) {

		return;

	}



	SPDK_NOTICELOG("Deinitializing '%s' because its %s device '%s' was removed\n",

		       base->parent->name, base->is_cache ? "cache" : "core", bdev->name);



	vbdev_ocf_delete(base->parent);

}



/* Open base SPDK bdev and claim it */

static int

attach_base(struct vbdev_ocf_base *base)
@@ -790,7 +808,7 @@ attach_base(struct vbdev_ocf_base *base) 
		return -EALREADY;

	}



	status = spdk_bdev_open(base->bdev, true, NULL, NULL, &base->desc);

	status = spdk_bdev_open(base->bdev, true, hotremove_cb, base, &base->desc);

	if (status) {

		SPDK_ERRLOG("Unable to open device '%s' for writing\n", base->name);

		return status;