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It is not recommended to issue back-to-back host reset without any delay. However, if someone issues back-to-back host reset then we observe that target devices get unregistered and re-register with SML. And if OS drive is behind the HBA when it gets unregistered, then file-system goes into read-only mode. Normally during host reset, driver marks accessible target devices as responding and triggers the event MPT3SAS_REMOVE_UNRESPONDING_DEVICES to remove any non-responding devices through FW worker thread. While processing this event, driver unregisters the non-responding devices and clears the responding flag for all the devices. Currently, during host reset, driver is cancelling only those Firmware event works which are pending in Firmware event workqueue. It is not cancelling work which is currently running. Change the driver to cancel all events. Link: https://lore.kernel.org/r/1596096229-3341-4-git-send-email-suganath-prabu.subramani@broadcom.com Signed-off-by: Suganath Prabu S <suganath-prabu.subramani@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.