Mercurial > hg
annotate tests/test-largefiles-small-disk.t @ 21758:c27a37678508 stable
p4: accept changesets with no description (issue4282)
author | Matt Mackall <mpm@selenic.com> |
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date | Mon, 16 Jun 2014 12:04:48 -0500 |
parents | 8a021cd38719 |
children | 7356e6b1f5b8 |
rev | line source |
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largefiles: write .hg/largefiles/ files atomically
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1 Test how largefiles abort in case the disk runs full |
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2 |
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3 $ cat > criple.py <<EOF |
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4 > import os, errno, shutil |
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5 > from mercurial import util |
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6 > # |
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7 > # this makes the original largefiles code abort: |
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8 > def copyfileobj(fsrc, fdst, length=16*1024): |
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9 > fdst.write(fsrc.read(4)) |
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10 > raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC)) |
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11 > shutil.copyfileobj = copyfileobj |
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12 > # |
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13 > # this makes the rewritten code abort: |
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14 > def filechunkiter(f, size=65536, limit=None): |
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15 > yield f.read(4) |
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16 > raise IOError(errno.ENOSPC, os.strerror(errno.ENOSPC)) |
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17 > util.filechunkiter = filechunkiter |
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18 > # |
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19 > def oslink(src, dest): |
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20 > raise OSError("no hardlinks, try copying instead") |
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21 > util.oslink = oslink |
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22 > EOF |
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23 |
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24 $ echo "[extensions]" >> $HGRCPATH |
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25 $ echo "largefiles =" >> $HGRCPATH |
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26 |
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27 $ hg init alice |
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28 $ cd alice |
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29 $ echo "this is a very big file" > big |
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30 $ hg add --large big |
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31 $ hg commit --config extensions.criple=$TESTTMP/criple.py -m big |
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32 abort: No space left on device |
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33 [255] |
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34 |
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35 The largefile is not created in .hg/largefiles: |
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36 |
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37 $ ls .hg/largefiles |
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38 dirstate |
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39 |
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40 The user cache is not even created: |
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41 |
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42 >>> import os; os.path.exists("$HOME/.cache/largefiles/") |
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43 False |
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44 |
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45 Make the commit with space on the device: |
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46 |
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47 $ hg commit -m big |
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48 |
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49 Now make a clone with a full disk, and make sure lfutil.link function |
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50 makes copies instead of hardlinks: |
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51 |
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52 $ cd .. |
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53 $ hg --config extensions.criple=$TESTTMP/criple.py clone --pull alice bob |
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54 requesting all changes |
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55 adding changesets |
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56 adding manifests |
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57 adding file changes |
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58 added 1 changesets with 1 changes to 1 files |
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59 updating to branch default |
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60 getting changed largefiles |
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61 abort: No space left on device |
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62 [255] |
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63 |
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64 The largefile is not created in .hg/largefiles: |
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65 |
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66 $ ls bob/.hg/largefiles |
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67 dirstate |