md/raid5: Fix parity corruption on journal failure #227
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A journal device failure can lead to parity corruption and silent data loss in degraded arrays. This occurs because the current implementation continues to update the parity even when journal writes fail. Fixed this by: 1. In ops_run_io(), check if journal writes failed before proceeding with disk writes. Abort write operations when journal is faulty. 2. In handle_failed_stripe(), clear all R5_Want* flags to ensure clean state for stripe retry after journal failure. 3. In handle_stripe(), correctly identify write operations that must be failed when journal is unavailable. Signed-off-by: Meir Elisha <meir.elisha@volumez.com>
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Upstream branch: c17fb54 |
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Pull request for series with
subject: md/raid5: Fix parity corruption on journal failure
version: 1
url: https://patchwork.kernel.org/project/linux-raid/list/?series=990562