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Whenever we encounter a sense code of ALUA transitioning in scsi_io_completion() it means that the SCSI midlayer ran out of retries trying to wait for ALUA transitioning. In these cases we should be passing up the error, but signalling that the I/O might be retried, preferably on another path. So return BLK_STS_AGAIN in these cases. [mkp: typo + fallthrough] Link: https://lore.kernel.org/r/20200930080256.90964-5-hare@suse.de Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Hannes Reinecke <hare@suse.de> 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.