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94a39d61f8
This patch adds a new target subsys attribute which allows user to optionally specify target controller IDs which then used in the nvmet_execute_identify_ctrl() to fill up the nvme_id_ctrl structure. For example, when using a cluster setup with two nodes, with a dual ported NVMe drive and exporting the drive from both the nodes, The connection to the host fails due to the same controller ID and results in the following error message:- "nvme nvmeX: Duplicate cntlid XXX with nvmeX, rejecting" With this patch now user can partition the controller IDs for each subsystem by setting up the cntlid_min and cntlid_max. These values will be used at the time of the controller ID creation. By partitioning the ctrl-ids for each subsystem results in the unique ctrl-id space which avoids the collision. When new attribute is not specified target will fall back to original cntlid calculation method. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Keith Busch <kbusch@kernel.org> |
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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.