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| author | Jakob Unterwurzacher | 2023-06-09 07:50:11 +0200 |
|---|---|---|
| committer | Jakob Unterwurzacher | 2026-07-16 20:10:19 +0200 |
| commit | 69cb943fa6b313b0d19668c92a4bcceed62fa561 (patch) | |
| tree | f48f370d5672533d33e342864f45c48c4006fe32 | |
| parent | 11cae523c9758fabe7ed1a24aaccf82d461dafb0 (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 4f39410..d154100 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. |