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| author | Jakob Unterwurzacher | 2023-06-09 07:50:11 +0200 |
|---|---|---|
| committer | Jakob Unterwurzacher | 2024-12-04 19:53:15 +0100 |
| commit | d60b851b4632b50ccd811c45626363d0ed2d1d15 (patch) | |
| tree | 6d20c1cd5728887aa92dec41c457c0df2d31969c | |
| parent | 655d9a81c211f8fa151d42fe87ebf91c7fc8cc10 (diff) | |
tests/cluster: note that ext4 provides no atomicity
| -rw-r--r-- | tests/cluster/cluster_test.go | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/tests/cluster/cluster_test.go b/tests/cluster/cluster_test.go index 0a24d2d..4e3099a 100644 --- a/tests/cluster/cluster_test.go +++ b/tests/cluster/cluster_test.go @@ -30,6 +30,13 @@ import ( // > Other Linux filesystems only guaranty page level atomicity for // > buffered read/write. // +// Note that ext4 actually provides NO ATOMICITY AT ALL. +// Quoting https://stackoverflow.com/a/35256626 : +// +// > Linux 4.2.6 with ext4: update atomicity = 1 byte +// +// TestPoCTornWrite in this package confirms this. +// // See also: // - https://lore.kernel.org/linux-xfs/20190325001044.GA23020@dastard/ // Dave Chinner: XFS is the only linux filesystem that provides this behaviour. |