Fix hg clone race with writer Most read operations in hg don't need locks because we order reads and writes for consistency. Clone is an exception to this as we're copying entire file histories and could end up with more file history copied than we have commits. For now, make clone take a lock on the source repo. Non-hardlinked clone should eventually be changed to use lockless pull.

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#!/bin/sh

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mkdir a

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cd a

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hg init

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echo foo > t1

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hg add t1

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hg commit -m "1" -d "0 0"

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cd ..

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hg clone a b

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cd a

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echo foo > t2

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hg add t2

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hg commit -m "2" -d "0 0"

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cd ../b

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echo foo > t3

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hg add t3

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hg commit -m "3" -d "0 0"

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hg push ../a

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hg pull ../a

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hg push ../a

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hg up -m

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hg commit -m "4" -d "0 0"

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hg push ../a