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d76c769c8db4c321aa4d697e810e0ed0b30bcc91
We noticed a SCSI device that refused to allow READ CAPACITY when the device had a PR with exclusive access, registrants only. The result of this situation is that the blocklayout driver adds a pnfs_block_dev of zero length which always fails the offset_in_map tests. Instead of continuously trying to do pNFS for this case, just mark the device as unavailable which will allow the client to fallback to the MDS for the duration of PNFS_DEVICE_RETRY_TIMEOUT. Signed-off-by: Benjamin Coddington <bcodding@redhat.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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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.
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