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btrfs: raid56: backporst to reduce corruption

Qu Wenruo linux-btrfs stable 1 version In review

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  1. v1 Latest2 patches 1 replyIn review

Patches in v1 No applies recorded yet

#Subject and filesSizeRepliesApplied
1/2btrfs: only write the sectors in the vertical stripe which has data stripesfs/btrfs/raid56.c+51 -40 replies
2/2btrfs: raid56: don't trust any cached sector in __raid56_parity_recover()fs/btrfs/raid56.c+6 -130 replies

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All 2 patches have a Reviewed-by or Acked-by.

PatchDavid Sterba
1/2A-b
2/2A-b

Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.

Read the v1 thread

Cover letter [PATCH STABLE 4.14 0/2] btrfs: raid56: backporst to reduce corruption

This is the backport for v4.19.x stable branch.

The full explananation can be found here:
https://lore.kernel.org/linux-btrfs/[email protected]/

No code change between v4.14.x and v4.19.x, at least nothing git can not auto-resolve.

Testing wise, this is beyond my testing environment. Although latest GCC compiles without problem, the result kernel can not be properly boot at all, not even any kernel early boot message.

I'm not sure if this is something related to latest edk2 UEFI or something else, I can no longer do proper testing for any older branch, including this 4.19 one.

Thus I can not do any guarantee on these backports, unfortunately the backports can only go to v5.x branches for now.

Unless anyone has better ideas how to build and run older kernels with latest edk2 UEFI environment.

Qu Wenruo (2):
btrfs: only write the sectors in the vertical stripe which has data
stripes
btrfs: raid56: don't trust any cached sector in

    __raid56_parity_recover()
 fs/btrfs/raid56.c | 74 ++++++++++++++++++++++++++++++++++++-----------
 1 file changed, 57 insertions(+), 17 deletions(-)
Signature · 1 line
2.37.1