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This replaces the call to /sbin/btrfs with a method to find a btrfs
program, which raises ENOENT if one cannot be found.
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This prevents ALL TEH BACKUPS being copied back to the host.
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Also updated the signatures of list_files and restore_files to match.
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* Reinstated --list (although this is a no-op really)
* Changed --list-all to -all
* Checks to made to make sure only --restore or --list is given
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Including checking that only one of --complete, --ping, or --list are
called.
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Otheriwse you end up with your current directory owned by
byteback:byteback (or whoever owns the byteback_root).
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* Verbose is now caught properly
* --all is caught and removed
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This allows the user to specify --xattrs --acl --hard-links etc.
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This is for consistency and understanding. We use btrfs snapshots, so
this makes sense. To me at least.
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Hopefully this will prompt people to update.
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The byteback-restore command now uses the rsync xattrs to display
information about the files due to be restored. It can handle filenames
with spaces (!) and other characters.
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/etc/byteback/excludes file between runs can stop your next backup
completing.
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We've switched the default from --delete-after to --delete-during.
The intention being that we'll free up space during the rsync run,
rather than having to wait until all data has transferred, hoping
it will fit before deletion.
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If the /etc/byteback/pre-backup.d/ directory is present then
execute the contents.
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This is required as we're essentially passing the value to the
command-line, via fork()+exec().
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If the directory /etc/byteback/post-backup.d/ exists then run
all scripts in it, once we've completed our run.
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Moved the functions to the top of the script, wrap the body
of the program in a test to ensure we're being invoked.
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At the moment we kill the rsync if there is no I/O for the given
period (6 hours previously, 3 after this commit lands) and then
retry the rsync connection up to three times.
This meant that a backup could take no more than 3x6 = 18 hours
but that was too long. Now we'll be 3x2 = 6 hours and that should
be sufficient that transient failures are handled, but
never-gonna-complete cases fail in a timely fashion.
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This is useful to speed up backups, because otherwise they will
be I/O-bound and the CPU-overhead is a net-win.
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Rather than having a hard-wired value we now allow this to be
specified on the command-line:
--io-timeout=7200
Or in a file:
/etc/byteback/io_timeout
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Now we use the utility classes we have to log errors to syslog.
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