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When stripe alignments are invalid, data alignment algorithms in the allocator may not work correctly. Ensure we catch superblocks with invalid stripe alignment setups at mount time. These data alignment mismatches are now detected at mount time like this: XFS (loop0): SB stripe unit sanity check failed XFS (loop0): Metadata corruption detected at xfs_sb_read_verify+0xab/0x110, xfs_sb block 0xffffffffffffffff XFS (loop0): Unmount and run xfs_repair XFS (loop0): First 128 bytes of corrupted metadata buffer: 0000000091c2de02: 58 46 53 42 00 00 10 00 00 00 00 00 00 00 10 00 XFSB............ 0000000023bff869: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00000000cdd8c893: 17 32 37 15 ff ca 46 3d 9a 17 d3 33 04 b5 f1 a2 .27...F=...3.... 000000009fd2844f: 00 00 00 00 00 00 00 04 00 00 00 00 00 00 06 d0 ................ 0000000088e9b0bb: 00 00 00 00 00 00 06 d1 00 00 00 00 00 00 06 d2 ................ 00000000ff233a20: 00 00 00 01 00 00 10 00 00 00 00 01 00 00 00 00 ................ 000000009db0ac8b: 00 00 03 60 e1 34 02 00 08 00 00 02 00 00 00 00 ...`.4.......... 00000000f7022460: 00 00 00 00 00 00 00 00 0c 09 0b 01 0c 00 00 19 ................ XFS (loop0): SB validate failed with error -117. And the mount fails. Signed-off-by: Dave Chinner <dchinner@redhat.com> Reviewed-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.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.
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.