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Bugzilla:Migrating to git: Difference between revisions
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=== Initial Migration === | === Initial Migration === | ||
When the git repos are created, we can do a full migration to look for errors. The migration script (migrate.sh) calculates the md5sum for all files in the head of each branch in both bzr and the resulting git repository and compares them. After the trial migration we can examine the log for differences. Limitations: this only checks heads of branches and | When the git repos are created, we can do a full migration to look for errors. The migration script (migrate.sh) calculates the md5sum for all files in the head of each branch in both bzr and the resulting git repository and compares them along with file metadata (as reported by 'ls -l'). After the trial migration we can examine the log for differences. Limitations: this only checks heads of branches and does not verify any commit metadata. | ||
The first trial migration was completed on 2014/02/12. It was successful aside from a few files that were removed in bzr commits but present in the final git repository. It appears that at least some of these are a result of a directory being renamed and files in that directory being removed in the same commit; bzr records this (given old name "A" and new name "B") as "R A B" followed by "D A", meaning that the delete is recorded on the original name, not the new name. This results in the rename being successful but the delete being ignored. This is not critical, since they can be removed after the fact, but it might be worth adjusting the fastexport translation script to account for this. | The first trial migration was completed on 2014/02/12. It was successful aside from a few files that were removed in bzr commits but present in the final git repository. It appears that at least some of these are a result of a directory being renamed and files in that directory being removed in the same commit; bzr records this (given old name "A" and new name "B") as "R A B" followed by "D A", meaning that the delete is recorded on the original name, not the new name. This results in the rename being successful but the delete being ignored. This is not critical, since they can be removed after the fact, but it might be worth adjusting the fastexport translation script to account for this. | ||