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ZTS: Test for clone, mmap and write for block cloning

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For block cloning, if we mmap the cloned file and write from the
map into the file, it triggers a panic in dbuf_redirty() on Linux.

The same scenario causes data corruption on FreeBSD. Both these
issues are fixed under PR#15656 and PR#15665.

It would be good to add a test for this scenario in ZTS. The test
program and issue was produced by @robn.

Reviewed-by: Pawel Jakub Dawidek <pawel@dawidek.net>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Ameer Hamza <ahamza@ixsystems.com>
Signed-off-by: Umer Saleem <usaleem@ixsystems.com>
Closes #15717
This commit is contained in:
Umer Saleem
2024-01-17 02:15:10 +05:00
committed by Brian Behlendorf
parent 83c0ccc7cf
commit d2f7b2e557
8 changed files with 209 additions and 1 deletions
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tests/runfiles/common.run
+1 -1
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@@ -79,7 +79,7 @@ tests = ['block_cloning_copyfilerange', 'block_cloning_copyfilerange_partial',
'block_cloning_cross_enc_dataset',
'block_cloning_copyfilerange_fallback_same_txg',
'block_cloning_replay', 'block_cloning_replay_encrypted',
'block_cloning_lwb_buffer_overflow']
'block_cloning_lwb_buffer_overflow', 'block_cloning_clone_mmap_write']
tags = ['functional', 'block_cloning']
[tests/functional/bootfs]