annotate tests/test-pull-pull-corruption.t @ 25591:f1d46075b13a

verify: check the subrepository references in .hgsubstate While hopefully atypical, there are reasons that a subrepository revision can be lost that aren't covered by corruption of the .hgsubstate revlog. Such things can happen when a subrepo is amended, stripped or simply isn't pulled from upstream because the parent repo revision wasn't updated yet. There's no way to know if it is an error, but this will find potential problems sooner than when some random revision is updated. Until recently, convert made no attempt at rewriting the .hgsubstate file. The impetuous for this is to verify the conversion of some repositories, and this is orders of magnitude faster than a bash script from 0..tip that does an 'hg update -C $rev'. But it is equally useful to determine if everything has been pulled down before taking a thumb drive on the go. It feels somewhat wrong to leave this out of verifymod (mostly because the file is already read in there, and the final summary is printed before the subrepos are checked). But verifymod looks very low level, so importing subrepo stuff there seems more wrong.
author Matt Harbison <matt_harbison@yahoo.com>
date Tue, 16 Jun 2015 16:15:15 -0400
parents f2719b387380
children eb586ed5d8ce
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 Corrupt an hg repo with two pulls.
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2 create one repo with a long history
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3
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4 $ hg init source1
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5 $ cd source1
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6 $ touch foo
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7 $ hg add foo
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8 $ for i in 1 2 3 4 5 6 7 8 9 10; do
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9 > echo $i >> foo
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10 > hg ci -m $i
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11 > done
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12 $ cd ..
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13
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14 create one repo with a shorter history
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15
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16 $ hg clone -r 0 source1 source2
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17 adding changesets
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18 adding manifests
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19 adding file changes
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20 added 1 changesets with 1 changes to 1 files
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21 updating to branch default
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22 1 files updated, 0 files merged, 0 files removed, 0 files unresolved
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23 $ cd source2
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24 $ echo a >> foo
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25 $ hg ci -m a
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26 $ cd ..
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27
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28 create a third repo to pull both other repos into it
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29
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30 $ hg init corrupted
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31 $ cd corrupted
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32
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33 use a hook to make the second pull start while the first one is still running
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34
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35 $ echo '[hooks]' >> .hg/hgrc
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36 $ echo 'prechangegroup = sleep 5' >> .hg/hgrc
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37
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38 start a pull...
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39
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40 $ hg pull ../source1 > pull.out 2>&1 &
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41
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42 ... and start another pull before the first one has finished
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43
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44 $ sleep 1
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45 $ hg pull ../source2 2>/dev/null
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46 pulling from ../source2
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47 searching for changes
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48 adding changesets
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49 adding manifests
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50 adding file changes
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51 added 1 changesets with 1 changes to 1 files (+1 heads)
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52 (run 'hg heads' to see heads, 'hg merge' to merge)
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53 $ cat pull.out
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54 pulling from ../source1
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55 requesting all changes
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56 adding changesets
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57 adding manifests
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58 adding file changes
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59 added 10 changesets with 10 changes to 1 files
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60 (run 'hg update' to get a working copy)
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61
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62 see the result
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63
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64 $ wait
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65 $ hg verify
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66 checking changesets
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67 checking manifests
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68 crosschecking files in changesets and manifests
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69 checking files
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70 1 files, 11 changesets, 11 total revisions
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72 $ cd ..