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When reset_controller that is invoked by sysfs fails, it enters an error flow which practically removes the nvme ctrl entirely (similar to delete_ctrl flow). It causes the system to hang, since a sysfs attribute cannot be unregistered by one of its own methods. This can be fixed by calling delete_ctrl as a work rather than sequential code. In addition, it should give the ctrl a chance to recover using reconnection mechanism (consistant with FC reset_ctrl error flow). Also, while we're here, return suitable errno in case the reset ended with non live ctrl. Signed-off-by: Nitzan Carmi <nitzanc@mellanox.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> |
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