Mercurial > hg
annotate tests/test-largefiles-small-disk.t @ 30632:1d0e4832e616
convert: parse perforce data on-demand
We are using read-only attributes that parse the perforce data on
demand. We are reading the data only once whenever an attribute is
requested and use it throughout the import process. This is equivalent
to the previous behavior, but we are avoiding reading from perforce when
we initialize the object, but instead run it during the actual import
process, when the first attribute is requested (usually getheads(), see
`convertcmd.convert`).
author | David Soria Parra <davidsp@fb.com> |
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date | Tue, 20 Dec 2016 09:23:50 -0800 |
parents | 7356e6b1f5b8 |
children | 1ef37b16b8e8 |
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=131072, 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 |