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d176fadb9e
Adding stripes to an existing raid4/5/6/10 mapped device grows its capacity though it'll be only made available _after_ the respective reshape finished as of MD kernel reshape semantics. Such reshaping involves moving a window forward starting at BOD reading content from previous lesser stripes and writing them back in the new layout with more stripes. Once that process finishes at end of previous data, the grown size may be announced and used. In order to avoid writing over any existing data in place, out-of-place space is added to the beginning of each data device by lvm2 before starting the reshape process. That reshape space wasn't taken into acount for data device size calculation. Fixes resulting from above: - correct event handling conditions in do_table_event() to set the device's capacity after the stripe adding reshape ended - subtract mentioned out-of-place space doing data device and array size calculations - conditionally set capacity as of superblock in preresume Testing: - passes all LVM2 RAID tests including new lvconvert-raid-reshape-size.sh one Tested-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.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 reStructuredText 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.