Konrad Sztyber 943088499b sma: add volume cleanup thread ... Since SMA keeps track of attached volumes and a volume might get disconnected at any time (in which case they're also removed from the host side), a mechanism is needed to monitor if any of the volumes are no longer accessible. This patch implements that mechanism by adding a new thread running in the background that will periodically (60s by default) send a bdev_get_bdevs RPC and check that all previously attached volumes are available. If any of them are not, it'll remove it and stop the associated discovery services (if their refcount goes down to zero). The period can be changed through the `volume_cleanup_period` variable in the config file. One important thing to note is that we assume that any intermittent connection issues are handled internally by the SPDK application and a bdev is only removed after all reconnection attempts are performed. Signed-off-by: Konrad Sztyber <konrad.sztyber@intel.com> Change-Id: I5b9e63698879527d9f79156a0eda1c8bc5e66def Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12699 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>		2022-05-20 09:16:54 +00:00
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__init__.py	sma: initial support for volume connection via discovery	2022-05-20 09:16:54 +00:00
volume.py	sma: add volume cleanup thread	2022-05-20 09:16:54 +00:00