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Enospc_debug makes extent allocator print more debug messages, however for chunk allocation, there is no debug message for enospc_debug at all. This patch will add message for the following parts of chunk allocator: 1) No rw device at all Quite rare, but at least output one message for this case. 2) Not enough space for some device This debug message is quite handy for unbalanced disks with stripe based profiles (RAID0/10/5/6). 3) Not enough free devices This debug message should tell us if current chunk allocator is working correctly under minimal device requirements. Although in most cases, we will hit other ENOSPC before we even hit a chunk allocator ENOSPC, but such debug info won't help. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: Nikolay Borisov <nborisov@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
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.