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tonyhutter/reproducer.sh

Created November 22, 2023 22:12
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  1. tonyhutter created this gist Nov 22, 2023.
    30 changes: 30 additions & 0 deletions reproducer.sh
    View file
    Original file line number Diff line number Diff line change
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    #!/bin/bash
    #
    # Run this script multiple times in parallel inside your pool's mount
    # to reproduce https://github.com/openzfs/zfs/issues/15526. Like:
    #
    # ./reproducer.sh & ./reproducer.sh & ./reproducer.sh & /reproducer.sh & wait
    #

    if [ $(cat /sys/module/zfs/parameters/zfs_bclone_enabled) != "1" ] ; then
    echo "please set /sys/module/zfs/parameters/zfs_bclone_enabled = 1"
    exit
    fi

    prefix="reproducer_${BASHPID}_"
    dd if=/dev/urandom of=${prefix}0 bs=1M count=1 status=none

    echo "writing files"
    end=1000
    h=0
    for i in `seq 1 2 $end` ; do
    let "j=$i+1"
    cp ${prefix}$h ${prefix}$i
    cp --reflink=never ${prefix}$i ${prefix}$j
    let "h++"
    done

    echo "checking files"
    for i in `seq 1 $end` ; do
    diff ${prefix}0 ${prefix}$i
    done