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| author | Lars Wirzenius <liw@liw.fi> | 2021-01-04 13:30:21 +0200 |
|---|---|---|
| committer | Lars Wirzenius <liw@liw.fi> | 2021-01-04 15:02:33 +0200 |
| commit | c11b8bb76c50cff6aa481f17907ae7200ac55c01 (patch) | |
| tree | f275d30b15891a71f11d8012f0573268310567bf /obnam.md | |
| parent | f73b2a919dc2fe2d92eef6df9b7cab25af083fb3 (diff) | |
| download | obnam2-c11b8bb76c50cff6aa481f17907ae7200ac55c01.tar.gz | |
feat! record whether file was backed up and why, in a generation
This changes SQL schema.
Diffstat (limited to 'obnam.md')
| -rw-r--r-- | obnam.md | 57 |
1 files changed, 57 insertions, 0 deletions
@@ -919,6 +919,63 @@ given a manifest of the directory live restored in rest in rest.yaml then files live.yaml and rest.yaml match ~~~ +## Backup or not for the right reason + +The decision of whether to back up a file or keep the version in the +previous backup is crucial. This scenario verifies that Obnam makes +the right decisions. + +### First backup backs up all files because they're new + +This scenario verifies that in the first backup all files are backed +up because they were new. + +~~~scenario +given an installed obnam +and a running chunk server +and a client config based on smoke.yaml +and a file live/data.dat containing some random data +and a manifest of the directory live in live.yaml +when I run obnam --config smoke.yaml backup +when I run obnam --config smoke.yaml list-files +then file live/data.dat was backed up because it was new +~~~ + +### All files in second backup are unchanged + +This scenario verifies that if a file hasn't been changed, it's not +backed up. + +~~~scenario +given an installed obnam +and a running chunk server +and a client config based on smoke.yaml +and a file live/data.dat containing some random data +and a manifest of the directory live in live.yaml +when I run obnam --config smoke.yaml backup +when I run obnam --config smoke.yaml backup +when I run obnam --config smoke.yaml list-files +then file live/data.dat was not backed up because it was unchanged +~~~ + +### Second backup back up changed file + +This scenario verifies that if a file has indeed been changed, it's +backed up. + +~~~scenario +given an installed obnam +and a running chunk server +and a client config based on smoke.yaml +and a file live/data.dat containing some random data +and a manifest of the directory live in live.yaml +when I run obnam --config smoke.yaml backup +given a file live/data.dat containing some random data +when I run obnam --config smoke.yaml backup +when I run obnam --config smoke.yaml list-files +then file live/data.dat was backed up because it was changed +~~~ + ## Tricky filenames Obnam needs to handle all filenames the underlying operating and file |