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[stable/dragonfish] ZIL block cloning fix & re-enable block cloning #197

Merged
merged 2 commits into from
Dec 6, 2023
Merged

[stable/dragonfish] ZIL block cloning fix & re-enable block cloning #197

merged 2 commits into from
Dec 6, 2023

Commits on Dec 6, 2023

  1. ZIL: Remove 128K into 2x68K LWB split optimization 

    To improve 128KB block write performance in case of multiple VDEVs
ZIL used to spit those writes into two 64KB ones.  Unfortunately it
was found to cause LWB buffer overflow, trying to write maximum-
sizes 128KB TX_CLONE_RANGE record with 1022 block pointers into
68KB buffer, since unlike TX_WRITE ZIL code can't split it.

This is a minimally-invasive temporary block cloning fix until the
following more invasive prediction code refactoring.

Signed-off-by:	Alexander Motin <[email protected]>
Sponsored by:	iXsystems, Inc.
    @amotin @ixhamza
    amotin authored and ixhamza committed Dec 6, 2023
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  2. Revert "zfs-2.2.1: Disable block cloning by default" 

    This reverts commit 479dca5.

Signed-off-by: Ameer Hamza <[email protected]>
    @ixhamza
    ixhamza committed Dec 6, 2023
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