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2753e49176
Currently debugging log replay failures can be harder than needed, since all we do now is abort a transaction, which gives us a line number, a stack trace and an error code. But that is most of the times not enough to give some clue about what went wrong. So add a new helper to abort log replay and provide contextual information: 1) Dump the current leaf of the log tree being processed and print the slot we are currently at and the key at that slot; 2) Dump the current subvolume tree leaf if we have any; 3) Print the current stage of log replay; 4) Print the id of the subvolume root associated with the log tree we are currently processing (as we can have multiple); 5) Print some error message to mention what we were trying to do when we got an error. Replace all transaction abort calls (btrfs_abort_transaction()) with the new helper btrfs_abort_log_replay(), which besides dumping all that extra information, it also aborts the current transaction. Signed-off-by: Filipe Manana <fdmanana@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.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.