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iotests/257: test traditional sync modes
Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Message-id: 20190716000117.25219-12-jsnow@redhat.com [Edit 'Bitmap' --> 'bitmap' in 257.out --js] Signed-off-by: John Snow <jsnow@redhat.com>
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@ -283,6 +283,12 @@ def test_bitmap_sync(bsync_mode, msync_mode='bitmap', failure=None):
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Bitmaps are always synchronized, regardless of failure.
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(Partial images must be kept.)
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:param msync_mode: The mirror sync mode to use for the first backup.
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Can be any one of:
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- bitmap: Backups based on bitmap manifest.
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- full: Full backups.
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- top: Full backups of the top layer only.
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:param failure: Is the (optional) failure mode, and can be any of:
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- None: No failure. Test the normative path. Default.
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- simulated: Cancel the job right before it completes.
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@ -393,7 +399,7 @@ def test_bitmap_sync(bsync_mode, msync_mode='bitmap', failure=None):
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# group 1 gets cleared first, then group two gets written.
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if ((bsync_mode == 'on-success' and not failure) or
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(bsync_mode == 'always')):
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ebitmap.clear_group(1)
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ebitmap.clear()
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ebitmap.dirty_group(2)
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vm.run_job(job, auto_dismiss=True, auto_finalize=False,
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@ -404,8 +410,19 @@ def test_bitmap_sync(bsync_mode, msync_mode='bitmap', failure=None):
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log('')
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if bsync_mode == 'always' and failure == 'intermediate':
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# TOP treats anything allocated as dirty, expect to see:
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if msync_mode == 'top':
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ebitmap.dirty_group(0)
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# We manage to copy one sector (one bit) before the error.
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ebitmap.clear_bit(ebitmap.first_bit)
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# Full returns all bits set except what was copied/skipped
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if msync_mode == 'full':
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fail_bit = ebitmap.first_bit
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ebitmap.clear()
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ebitmap.dirty_bits(range(fail_bit, SIZE // GRANULARITY))
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ebitmap.compare(get_bitmap(bitmaps, drive0.device, 'bitmap0'))
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# 2 - Writes and Reference Backup
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@ -499,10 +516,25 @@ def test_backup_api():
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'bitmap404': ['on-success', 'always', 'never', None],
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'bitmap0': [None],
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},
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'full': {
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None: ['on-success', 'always', 'never'],
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'bitmap404': ['on-success', 'always', 'never', None],
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'bitmap0': ['never', None],
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},
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'top': {
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None: ['on-success', 'always', 'never'],
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'bitmap404': ['on-success', 'always', 'never', None],
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'bitmap0': ['never', None],
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},
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'none': {
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None: ['on-success', 'always', 'never'],
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'bitmap404': ['on-success', 'always', 'never', None],
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'bitmap0': ['on-success', 'always', 'never', None],
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}
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}
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# Dicts, as always, are not stably-ordered prior to 3.7, so use tuples:
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for sync_mode in ('incremental', 'bitmap'):
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for sync_mode in ('incremental', 'bitmap', 'full', 'top', 'none'):
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log("-- Sync mode {:s} tests --\n".format(sync_mode))
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for bitmap in (None, 'bitmap404', 'bitmap0'):
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for policy in error_cases[sync_mode][bitmap]:
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@ -517,6 +549,11 @@ def main():
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for failure in ("simulated", "intermediate", None):
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test_bitmap_sync(bsync_mode, "bitmap", failure)
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for sync_mode in ('full', 'top'):
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for bsync_mode in ('on-success', 'always'):
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for failure in ('simulated', 'intermediate', None):
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test_bitmap_sync(bsync_mode, sync_mode, failure)
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test_backup_api()
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if __name__ == '__main__':
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