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c725328c55
Now that scrub can fix data errors with the help of parity for raid56 profile, repair during read is able to as well. Although the mirror num in raid56 scenario has different meanings, i.e. 0 or 1: read data directly > 1: do recover with parity, it could be fit into how we repair bad block during read. The trick is to use BTRFS_MAP_READ instead of BTRFS_MAP_WRITE to get the device and position on it. Cc: David Sterba <dsterba@suse.cz> Tested-by: Qu Wenruo <quwenruo@cn.fujitsu.com> Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Signed-off-by: David Sterba <dsterba@suse.com> |
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| README | ||
Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.