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Bug #9485

Optimize possible split block search space

Added by Matthew Ahrens over 1 year ago. Updated 7 months ago.

Status:
Closed
Priority:
Normal
Category:
zfs - Zettabyte File System
Start date:
2018-04-16
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage

Description

Port this commit from ZoL: https://github.com/zfsonlinux/zfs/commit/4589f3ae4c1bb435777da8640eb915f3c713b14d

commit f20d6e0f81f5e163d088fce868c95bfeda88f37f
Author: Brian Behlendorf <>
Date: Thu Mar 29 14:50:40 2018 -0700

Optimize possible split block search space
Remove duplicate segment copies to minimize the possible search
space for reconstruction. Once reduced an accurate assessment can
be made regarding the difficulty in reconstructing the block.
Also, ztest will now run zdb with
zfs_reconstruct_indirect_combinations_max set to 1000000 in an attempt
to avoid checksum errors.
Reviewed-by: Matthew Ahrens &lt;&gt;
Reviewed-by: Tim Chase &lt;&gt;
Signed-off-by: Brian Behlendorf &lt;&gt;
Closes #6900

History

#1

Updated by Electric Monk 7 months ago

  • % Done changed from 0 to 100
  • Status changed from New to Closed

git commit a21fe349793c3805ec504bbe5e9acf06c2d63d7a

commit  a21fe349793c3805ec504bbe5e9acf06c2d63d7a
Author: Brian Behlendorf <behlendorf1@llnl.gov>
Date:   2019-02-18T15:54:05.000Z

    9485 Optimize possible split block search space
    Reviewed-by: Matthew Ahrens <mahrens@delphix.com>
    Reviewed-by: Tim Chase <tim@chase2k.com>
    Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
    Reviewed by: Serapheim Dimitropoulos <serapheim.dimitro@delphix.com>

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