[Bug 203943] ext4 corruption after RAID6 degraded; e2fsck skips block checks and fails

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https://bugzilla.kernel.org/show_bug.cgi?id=203943

Andreas Dilger (adilger.kernelbugzilla@xxxxxxxxx) changed:

           What    |Removed                     |Added
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                 CC|                            |adilger.kernelbugzilla@dilg
                   |                            |er.ca

--- Comment #1 from Andreas Dilger (adilger.kernelbugzilla@xxxxxxxxx) ---
This seems like a RAID problem and not an ext4 problem. The RAID array
shouldn't be returning random garbage if one of the drives is unavailable.
Maybe it is not doing data parity verification on reads, so that it is blindly
returning bad blocks from the failed drive rather than reconstructing valid
data from parity if the drive does not fail completely?

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