Migration from CVS to SVN: Difference between revisions

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* [http://cvs2svn.tigris.org/cvs2svn.html cvs2svn tool page]  
* [http://cvs2svn.tigris.org/cvs2svn.html cvs2svn tool page]  
* [http://www.neogia.org/Cvs_To_Subversion_Migration_Plan Migration plan example]
* [http://www.neogia.org/Cvs_To_Subversion_Migration_Plan Migration plan example]
* [http://www.xs4all.nl/~carlo17/svn/cvs2svn.html Converting CVS to subversion]


* Online book: [http://svnbook.red-bean.com/nightly/en/index.html Version Control with Subversion]
* Online book: [http://svnbook.red-bean.com/nightly/en/index.html Version Control with Subversion]

Revision as of 16:57, 4 November 2007

This page contains notes related to GRASS code migration (planned) from CVS to SVN.

Basic

  • The SVN command line interface is just like CVS, many tasks are identical- just change the program name from cvs to svn.

Gotchas

  • cvs2svn is known to break binary files (images) which were not imported into the CVS with the -kb flag. Luckily Glynn fixed most of these some months ago.
  • Files using keyword substitution, such as $Date$ in the description.html files, will have to have support for that enabled manually, once per file (or write a find routine with | xargs svn ...).
$ svn propset svn:keywords "Date" filename.txt
$ svn commit

or 

$ find . -name '*.c' | xargs svn propset svn:keywords "Date" 
$ find . -name '*.html' | xargs svn propset svn:keywords "Date" 
$ svn commit
  • how to maintain timestamps of files? We want to keep the last modification date, not the date of local download

GRASS CVS repository structure

/grass-cvs
|
+---/CVSROOT
|
+---/grass
|
+---/grass51
|
+---/grass6
|
+---/grass_doc
|
+---/libgrass
|
+---/newsletter
|
+---/programgrass50
|
+---/web

Testing SVN repository

  • grass/grass should be renamed to grass/grass5

Question:

  • Migrate all directories or only actively used (grass, grass6, newsletter, web)?
  • Create separate repositories (grass5, grass6, grassweb, grassnewsletter, grass7) or one repository (grass-svn)?

Proposed structure

Scenario 1

/grass-svn
|
+---/grass5
    |
    +---/branches
    |
    +---/tags
    |
    +---/trunk
+---/grass6
    |
    +---/branches
    |
    +---/tags
    |
    +---/trunk
+---/grass7
    |
    +---/branches
    |
    +---/tags
    |
    +---/trunk
+---/newsletter
    |
    +---/branches (???)
    |
    +---/tags (???)
    |
    +---/trunk
+---/web
    |
    +---/trunk

Scenario 2

/grass-svn
|
+---/trunk
|
+---/branches
    |
    +---/grass5
    |
    +---/grass6
    |
    +---/grass7
+---/tags

Copy of GRASS CVS repository

rsync -r --times --links --bwlimit=200 --delete rsync://rsync.intevation.de/grass grass-cvs

→ cca 600 MB!

Creating GRASS SVN repository

grass5

cvs2svn --use-cvs --no-default-eol \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grass5svn-orig grass-cvs/grass

→ grass5svn-orig

Question: exclude selected branches/tags (which one?)

According to undocumented these branches/tags are suggested to be excluded: 

--exclude="Mike" \
--exclude="grass" \
--exclude="unlabeled-.*" \
--exclude=devices_cleanup_20000420 \
--exclude=post_compare_glynn_head_2002_11_27 \
--exclude=post_compare_glynn_release_2002_11_27 \
--exclude=post_merge_head_2002_01_22 \
--exclude=post_sync_2002_01_22 \
--exclude=pre-curses-fix \
--exclude=pre_merge_head_2002_01_22 \
--exclude=pre_merge_release_2002_01_22 \
--exclude=pre_sync_2001_10_31 \
--exclude=pre_sync_2002_01_17 \
--exclude=release_15_05_2004_grass5_3_0 \
--exclude=releasebranch_11_april_2001_5_0_0 \
--exclude=releasebranch_11_april_2001_5_0_0_DEAD \
--exclude=releasebranch_500 \
--exclude=releasebranch_5_0_0 \
--exclude=release_grass5beta11pre1_21_january_2001 \
--exclude=release_grass5beta11pre2_28_january_2001 \
--exclude=start \
--exclude=testbranch_5_0_0stable \
--exclude=grassreleasebranch_5_0_0 \

A lot of dependency problems: 

ERROR: The branch 'unlabeled-1.7.4' cannot be excluded because the following symbols depend on it:
   'release_grass500pre1_20_may_2001'
   'release_13_september_2001_grass5_0_0_pre2'
   'release_16_january_2002_grass5_0_0_pre3'
   'releasebranch_14_august_2001_5_0_0'
ERROR: The branch 'unlabeled-1.6.4' cannot be excluded because the following symbols depend on it:
   'release_grass500pre1_20_may_2001'
   'color_changes_20010502'
   'release_13_september_2001_grass5_0_0_pre2'
   'release_16_january_2002_grass5_0_0_pre3'
   'releasebranch_14_august_2001_5_0_0'
...

cvs2svn --use-cvs --no-default-eol \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--exclude="Mike" \
--exclude="grass" \
--exclude="unlabeled-.*" \
--exclude=devices_cleanup_20000420 \
--exclude=post_compare_glynn_head_2002_11_27 \
--exclude=post_compare_glynn_release_2002_11_27 \
--exclude=post_merge_head_2002_01_22 \
--exclude=post_sync_2002_01_22 \
--exclude=pre-curses-fix \
--exclude=pre_merge_head_2002_01_22 \
--exclude=pre_merge_release_2002_01_22 \
--exclude=pre_sync_2001_10_31 \
--exclude=pre_sync_2002_01_17 \
--exclude=release_03_11_2003_grass5_0_3 \
--exclude=release_05_11_2004_grass5_4_0 \
--exclude=release_10_04_2003_grass5_0_2 \
--exclude=release_13_may_2002_grass5_0_0_pre4 \
--exclude=release_13_september_2001_grass5_0_0_pre2 \
--exclude=release_15_05_2004_grass5_3_0 \
--exclude=release_16_january_2002_grass5_0_0_pre3 \
--exclude=release_17_06_2004_grass5_7_0 \
--exclude=release_25_06_2002_grass5_0_0_pre5 \
--exclude=release_28_01_2003_grass5_0_1 \
--exclude=release_30_08_2002_grass5_0_0 \
--exclude=releasebranch_11_april_2001_5_0_0 \
--exclude=releasebranch_11_april_2001_5_0_0_DEAD \
--exclude=releasebranch_500 \
--exclude=releasebranch_5_0_0 \
--exclude=release_grass500pre1_20_may_2001 \
--exclude=release_grass5beta10_7_december_2000 \
--exclude=release_grass5beta11_4_february_2001 \
--exclude=release_grass5beta11pre1_21_january_2001 \
--exclude=release_grass5beta11pre2_28_january_2001 \
--exclude=release_grass5beta6_16_feb_2000 \
--exclude=release_grass5beta7_20_april_2000 \
--exclude=release_grass5beta8_26_july_2000 \
--exclude=release_grass5beta9_6_december_2000 \
--exclude=start \
--exclude=testbranch_5_0_0stable \
--exclude=releasebranch_5_4 \
--exclude=grassreleasebranch_5_0_0 \
--exclude=releasebranch_26_april_2002_5_0_0 \
-s grass5svn grass-cvs/grass

→ grass5svn

grass6

cvs2svn --use-cvs --no-default-eol \
-s grass6svn grass-cvs/grass6
...
Error summary:
ERROR: A CVS repository cannot contain both grass-cvs/grass6/display/d.erase/main.c,v and grass-cvs/grass6/display/d.erase/Attic/main.c,v
ERROR: A CVS repository cannot contain both grass-cvs/grass6/general/g.mapsets/main_inter.c,v and grass-cvs/grass6/general/g.mapsets/Attic/main_inter.c,v
ERROR: A CVS repository cannot contain both grass-cvs/grass6/include/gproj_api.h,v and grass-cvs/grass6/include/Attic/gproj_api.h,v
ERROR: A CVS repository cannot contain both grass-cvs/grass6/visualization/nviz/src/getCat.c,v and grass-cvs/grass6/visualization/nviz/src/Attic/getCat.c,v
Exited due to fatal error(s).

Question: Remove Attic files? 

rm -f grass-cvs/grass6/display/d.erase/Attic/main.c,v
rm -f grass-cvs/grass6/general/g.mapsets/Attic/main_inter.c,v
rm -f grass-cvs/grass6/include/Attic/gproj_api.h,v
rm -f grass-cvs/grass6/visualization/nviz/src/Attic/getCat.c,v

Restart 

cvs2svn --use-cvs --no-default-eol \
-s grass6svn grass-cvs/grass6
...
----- pass 2 (CollateSymbolsPass) -----
ERROR: It is not clear how the following symbols should be converted.
Use --force-tag, --force-branch and/or --exclude to resolve the ambiguity.
   'releasebranch_6_2' is a tag in 2 files, a branch in 5259 files and has commits in 1513 files

Restart 

cvs2svn --use-cvs --no-default-eol \
--force-branch=releasebranch_6_2 \
-s grass6svn-orig grass-cvs/grass6

→ grass6svn-orig

Exclude all undocumented braches 

cvs2svn --use-cvs --no-default-eol 
--force-branch=releasebranch_6_2 \
--exclude="grass" \
--exclude="grassreleasebranch_5_0_0" \
--exclude="markus" \
--exclude="releasebranch_14_august_2001_5_0_0" \
--exclude="releasebranch_26_april_2002_5_0_0" \
--exclude="releasebranch_5_4" \
--exclude="unlabeled.*" \
-s grass6svn1 grass-cvs/grass6
...
----- pass 2 (CollateSymbolsPass) -----
Checking for blocked exclusions...
ERROR: The branch 'markus' cannot be excluded because the following symbols depend on it:
    'start'
    'releasebranch_11_april_2001_5_0_0'
ERROR: The branch 'grass' cannot be excluded because the following symbols depend on it:
...

cvs2svn --use-cvs --no-default-eol \
--force-branch=releasebranch_6_2  \
--exclude="grass" \
--exclude="grassreleasebranch_5_0_0" \
--exclude="markus" \
--exclude="releasebranch_14_august_2001_5_0_0" \
--exclude="releasebranch_26_april_2002_5_0_0" \
--exclude="releasebranch_5_4" \
--exclude="unlabeled.*" \
--exclude="devices_cleanup_20000420" \
--exclude="post_compare_glynn_head_2002_11_27" \
--exclude="post_compare_glynn_release_2002_11_27" \
--exclude="post_merge_head_2002_01_22" \
--exclude="post_sync_2002_01_22" \
--exclude="pre-curses-fix" \
--exclude="pre_merge_head_2002_01_22" \
--exclude="pre_merge_release_2002_01_22" \
--exclude="pre_sync_2001_10_31" \
--exclude="pre_sync_2002_01_17" \
--exclude="release_03_11_2003_grass5_0_3" \
--exclude="release_05_11_2004_grass5_4_0" \
--exclude="release_10_04_2003_grass5_0_2" \
--exclude="release_13_may_2002_grass5_0_0_pre4" \
--exclude="release_13_september_2001_grass5_0_0_pre2" \
--exclude="release_15_05_2004_grass5_3_0" \
--exclude="release_16_january_2002_grass5_0_0_pre3" \
--exclude="release_17_06_2004_grass5_7_0" \
--exclude="release_25_06_2002_grass5_0_0_pre5" \
--exclude="release_28_01_2003_grass5_0_1" \
--exclude="release_30_08_2002_grass5_0_0" \
--exclude="releasebranch_11_april_2001_5_0_0" \
--exclude="releasebranch_11_april_2001_5_0_0_DEAD" \
--exclude="releasebranch_500" \
--exclude="releasebranch_5_0_0" \
--exclude="release_grass500pre1_20_may_2001" \
--exclude="release_grass5beta10_7_december_2000" \
--exclude="release_grass5beta11_4_february_2001" \
--exclude="release_grass5beta11pre1_21_january_2001" \
--exclude="release_grass5beta11pre2_28_january_2001" \
--exclude="release_grass5beta6_16_feb_2000" \
--exclude="release_grass5beta7_20_april_2000" \
--exclude="release_grass5beta8_26_july_2000" \
--exclude="release_grass5beta9_6_december_2000" \
--exclude="start" \
--exclude="testbranch_5_0_0stable" \
--exclude="unlabeled-1.1.1.1.4" \
--exclude="unlabeled-1.1.1.1.6" \
--exclude="color_changes_20010502" \
-s grass6svn grass-cvs/grass6

Question: Exclude more tags (which)?

  • I guess tags "freetypecap", "lastworking", "pre_fileinfo_change" and maybe also "pre_vdigit_changes_.*" could be also excluded... --ML

Add other switches (e.g. --encoding) ?? 

cvs2svn --use-cvs --no-default-eol \
--force-branch=releasebranch_6_2  \
--exclude="grass" \
--exclude="grassreleasebranch_5_0_0" \
--exclude="markus" \
--exclude="releasebranch_14_august_2001_5_0_0" \
--exclude="releasebranch_26_april_2002_5_0_0" \
--exclude="releasebranch_5_4" \
--exclude="unlabeled.*" \
--exclude="devices_cleanup_20000420" \
--exclude="post_compare_glynn_head_2002_11_27" \
--exclude="post_compare_glynn_release_2002_11_27" \
--exclude="post_merge_head_2002_01_22" \
--exclude="post_sync_2002_01_22" \
--exclude="pre-curses-fix" \
--exclude="pre_merge_head_2002_01_22" \
--exclude="pre_merge_release_2002_01_22" \
--exclude="pre_sync_2001_10_31" \
--exclude="pre_sync_2002_01_17" \
--exclude="release_03_11_2003_grass5_0_3" \
--exclude="release_05_11_2004_grass5_4_0" \
--exclude="release_10_04_2003_grass5_0_2" \
--exclude="release_13_may_2002_grass5_0_0_pre4" \
--exclude="release_13_september_2001_grass5_0_0_pre2" \
--exclude="release_15_05_2004_grass5_3_0" \
--exclude="release_16_january_2002_grass5_0_0_pre3" \
--exclude="release_17_06_2004_grass5_7_0" \
--exclude="release_25_06_2002_grass5_0_0_pre5" \
--exclude="release_28_01_2003_grass5_0_1" \
--exclude="release_30_08_2002_grass5_0_0" \
--exclude="releasebranch_11_april_2001_5_0_0" \
--exclude="releasebranch_11_april_2001_5_0_0_DEAD" \
--exclude="releasebranch_500" \
--exclude="releasebranch_5_0_0" \
--exclude="release_grass500pre1_20_may_2001" \
--exclude="release_grass5beta10_7_december_2000" \
--exclude="release_grass5beta11_4_february_2001" \
--exclude="release_grass5beta11pre1_21_january_2001" \
--exclude="release_grass5beta11pre2_28_january_2001" \
--exclude="release_grass5beta6_16_feb_2000" \
--exclude="release_grass5beta7_20_april_2000" \
--exclude="release_grass5beta8_26_july_2000" \
--exclude="release_grass5beta9_6_december_2000" \
--exclude="start" \
--exclude="testbranch_5_0_0stable" \
--exclude="unlabeled-1.1.1.1.4" \
--exclude="unlabeled-1.1.1.1.6" \
--exclude="color_changes_20010502" \
--exclude="freetypecap" \
--exclude="lastworking" \
--exclude="pre_fileinfo_change" \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grass6svn grass-cvs/grass6

All documented braches/tags were migrated. Repository contains also some undocumented tags: grass_6_0_0, grass_6_0_0beta1, post_vdigit_changes_2007023, pre_vdigit_changes_20070221, pre_vdigit_changes_2007023, release_20071021_grass_6_2_3RC1. In contrast releasebranch_6_0 is missing.

→ grass6svn

newsletter

SUGGESTION: merge newsletter into the OSGeo journal SVN 

cvs2svn --use-cvs --no-default-eol \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grassnlsvn grass-cvs/newsletter

Question: exclude branch "markus" and tags "Final_version", "ready_for_grammar_spelling_correction" and "start"?

  • I guess maybe only trunk can be migrate, we don't need any branches and tags in this case... --ML
cvs2svn --use-cvs --no-default-eol \
--exclude="markus" \
--exclude="Final_version" \
--exclude="ready_for_grammar_spelling_correction" \
--exclude="start" \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grassnlsvn grass-cvs/newsletter
...
Checking for blocked exclusions...
ERROR: The branch 'markus' cannot be excluded because the following symbols depend on it:
    'volume1_final'
...

Cannot exclude branch "markus" 

cvs2svn --use-cvs --no-default-eol \
--exclude="Final_version" \
--exclude="ready_for_grammar_spelling_correction" \
--exclude="start" \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grassnlsvn grass-cvs/newsletter

Questions:

  • Rename brach "markus"?
  • Rename tags "volume[1|2]_final" to "release_vol[1|2]"?

I guess only trunk is enough -- ML 

cvs2svn --use-cvs --no-default-eol \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--trunk-only \
-s grassnlsvn grass-cvs/newsletter

→ grassnlsvn

web

cvs2svn --use-cvs --no-default-eol \ 

--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grasswebsvn grass-cvs/web
...
ERROR: A CVS repository cannot contain both grass-cvs/web/bugtracking/index.html,v and grass-cvs/web/bugtracking/Attic/index.html,v
...

Question: Remove Attic file? 

rm -f grass-cvs/web/bugtracking/Attic/index.html,v

Question: Ignore branches ("markus") and tags ("start")? 

cvs2svn --use-cvs --no-default-eol \
--trunk-only \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grasswebsvn grass-cvs/web

→ grasswebsvn

grass7

Based on grass6 HEAD. 

cvs2svn --use-cvs --no-default-eol \
--force-branch=releasebranch_6_2 \
--trunk-only \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
-s grass7svn grass-cvs/grass6

→ grass7svn

Scenario 1

svnadmin create grass-svn

cvs2svn --use-cvs --no-default-eol \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--branches=grass5/branches \
--tags=grass5/tags \
--trunk=grass5/trunk \
--existing-svnrepos \
-s grass-svn grass-cvs/grass

cvs2svn --use-cvs --no-default-eol \
--force-branch=releasebranch_6_2  \
--exclude="grass" \
--exclude="grassreleasebranch_5_0_0" \
--exclude="markus" \
--exclude="releasebranch_14_august_2001_5_0_0" \
--exclude="releasebranch_26_april_2002_5_0_0" \
--exclude="releasebranch_5_4" \
--exclude="unlabeled.*" \
--exclude="devices_cleanup_20000420" \
--exclude="post_compare_glynn_head_2002_11_27" \
--exclude="post_compare_glynn_release_2002_11_27" \
--exclude="post_merge_head_2002_01_22" \
--exclude="post_sync_2002_01_22" \
--exclude="pre-curses-fix" \
--exclude="pre_merge_head_2002_01_22" \
--exclude="pre_merge_release_2002_01_22" \
--exclude="pre_sync_2001_10_31" \
--exclude="pre_sync_2002_01_17" \
--exclude="release_03_11_2003_grass5_0_3" \
--exclude="release_05_11_2004_grass5_4_0" \
--exclude="release_10_04_2003_grass5_0_2" \
--exclude="release_13_may_2002_grass5_0_0_pre4" \
--exclude="release_13_september_2001_grass5_0_0_pre2" \
--exclude="release_15_05_2004_grass5_3_0" \
--exclude="release_16_january_2002_grass5_0_0_pre3" \
--exclude="release_17_06_2004_grass5_7_0" \
--exclude="release_25_06_2002_grass5_0_0_pre5" \
--exclude="release_28_01_2003_grass5_0_1" \
--exclude="release_30_08_2002_grass5_0_0" \
--exclude="releasebranch_11_april_2001_5_0_0" \
--exclude="releasebranch_11_april_2001_5_0_0_DEAD" \
--exclude="releasebranch_500" \
--exclude="releasebranch_5_0_0" \
--exclude="release_grass500pre1_20_may_2001" \
--exclude="release_grass5beta10_7_december_2000" \
--exclude="release_grass5beta11_4_february_2001" \
--exclude="release_grass5beta11pre1_21_january_2001" \
--exclude="release_grass5beta11pre2_28_january_2001" \
--exclude="release_grass5beta6_16_feb_2000" \
--exclude="release_grass5beta7_20_april_2000" \
--exclude="release_grass5beta8_26_july_2000" \
--exclude="release_grass5beta9_6_december_2000" \
--exclude="start" \
--exclude="testbranch_5_0_0stable" \
--exclude="unlabeled-1.1.1.1.4" \
--exclude="unlabeled-1.1.1.1.6" \
--exclude="color_changes_20010502" \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--branches=grass6/branches \
--tags=grass6/tags \
--trunk=grass6/trunk \
--existing-svnrepos \
-s grass-svn grass-cvs/grass6

cvs2svn --use-cvs --no-default-eol \
--exclude="Final_version" \
--exclude="ready_for_grammar_spelling_correction" \
--exclude="start" \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--branches=newsletter/branches \
--tags=newsletter/tags \
--trunk=newsletter/trunk \
--existing-svnrepos \
-s grass-svn grass-cvs/newsletter

cvs2svn --use-cvs --no-default-eol \
--trunk-only \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--trunk=web/trunk \
--existing-svnrepos \
-s grass-svn grass-cvs/web

cvs2svn --use-cvs --no-default-eol \
--force-branch=releasebranch_6_2 \
--trunk-only \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--trunk=grass7/trunk \
--existing-svnrepos \
-s grass-svn grass-cvs/grass6

→ grass-svn

Scenario 2

Notes:

  • newsletter repository can be merged with OSGeo newsletter repository
  • web in separate repository outside of trac
svnadmin create grass-svn2 # cp -r grass6svn grass-svn2 

svnadmin dump grass6svn > grass6svn.dump

# need to be fixed
cvs2svn --use-cvs --no-default-eol \
--encoding="ASCII" \
--encoding="UTF-8" \
--encoding="ISO-8859-1" \
--trunk-only \
--trunk=branches/releasebranch_5_4 \
--branches=dummy \
-s grass5svn-trunk grass-cvs/grass
svnadmin dump grass5svn-trunk > grass5svn-trunk.dump

svnadmin load grass-svn2 < grass5svn-trunk.dump

→ grass-svn2

External links

SVN hosting

There are two main options to host the new SVN repository.

Retrieved from "https://grasswiki.osgeo.org/w/index.php?title=Migration_from_CVS_to_SVN&oldid=5140"